CN114928797A - Double-sided sound production device and electronic equipment - Google Patents
Double-sided sound production device and electronic equipment Download PDFInfo
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- CN114928797A CN114928797A CN202210335414.4A CN202210335414A CN114928797A CN 114928797 A CN114928797 A CN 114928797A CN 202210335414 A CN202210335414 A CN 202210335414A CN 114928797 A CN114928797 A CN 114928797A
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- 238000005096 rolling process Methods 0.000 claims 5
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- 238000001746 injection moulding Methods 0.000 description 1
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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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Abstract
The invention provides a double-sided sound production device and electronic equipment, wherein the device comprises a shell, two groups of vibration assemblies and two groups of magnetic circuit assemblies, wherein the two groups of vibration assemblies and the two groups of magnetic circuit assemblies are fixed with the shell; the magnetic circuit assembly comprises a central magnetic circuit and a side magnetic circuit, and a magnetic gap is formed between the central magnetic circuit and the side magnetic circuit; two sets of magnetic circuit component levels set up, and two sets of vibration subassemblies set up along vibration subassembly's vibration direction symmetry, and two sets of magnetic circuit components drive two voice coils of every group vibration subassembly simultaneously and with two fixed diplopore domes of voice coil loudspeaker voice coil mutually. The invention can solve the problems of larger thickness, elimination of vibration sense and the like when the existing 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 effect of reducing vibration sense can be realized when the device acts.
At present, a double-sided sounding device is designed by simply overlapping two single-sided sounding products, so that the thickness of the double-sided sounding device is larger in the practical application process; especially when the double-sided sound production device is applied to the whole machine, at least one side of the double-sided sound production device generally adopts a side sound production mode, so that the double-sided sound production device occupies great thickness when being applied, and difficulty is brought to the design of the whole machine product.
Disclosure of Invention
In view of the above problems, an object of the present invention is to provide a dual-sided sound generating device and an electronic apparatus, so as to solve the problems of the prior art, such as large thickness and vibration-canceling effect when the dual-sided sound generating device is applied to a whole machine.
The double-sided sound production 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 assembly comprises a double-hole vibrating diaphragm, a double-hole ball top arranged in a plane area of the double-hole vibrating diaphragm, two connecting frameworks and two voice coils, wherein the two voice coils are fixed with the double-hole ball top through the connecting frameworks;
the magnetic circuit component comprises a central magnetic circuit and a side magnetic circuit, and a magnetic gap is formed between the central magnetic circuit and the side magnetic circuit;
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, and two voice coils of each group of vibration assemblies are respectively arranged in magnetic gaps of the corresponding magnetic circuit assemblies; and the two groups of magnetic circuit assemblies simultaneously drive the two voice coils of each group of vibration assemblies and the double-hole ball tops fixed with the two voice coils.
In addition, it is preferable that the central magnetic circuit includes three central magnets and two central magnetic conductive plates, and the three central magnets are disposed at intervals by the two central magnetic conductive plates.
In addition, it is preferable that the polarities of the adjacent end portions of any two adjacent central magnets among the three central magnets are the same.
In addition, it is preferable that the side magnetic circuit includes three side magnets and two side magnetic plates, and the three side magnets are disposed at intervals by the two side magnetic plates, wherein the side magnetic plates are disposed on the housing.
In addition, the preferable structure is that each vibration component further comprises two magnetic conductive front covers, the magnetic conductive front covers are fixed on the double-hole vibrating diaphragm, and the magnetic conductive front covers are matched with the central hollow-out area of the double-hole vibrating diaphragm, wherein,
the magnetic conductive front covers corresponding to the vibration assemblies are symmetrically arranged on the upper side and the lower side of the corresponding magnetic circuit assemblies respectively and are attached to the central magnets at the two ends of the three central magnets respectively.
In addition, the preferable structure is that the number of the shells is two, and each shell is mutually fixed with the corresponding vibration component and the magnetic circuit component.
In addition, the preferable structure is that the double-hole diaphragm comprises an outer fixing portion, an inner fixing portion, three folding ring portions and an intermediate portion, wherein the outer fixing portion is fixed with the casing, the inner fixing portion is fixed with the magnetic conductive front cover, the three folding ring portions are all inward recessed structures, namely a first folding ring portion, a second folding ring portion and a third folding ring portion,
the first folding ring part is connected with the shell through the outer side fixing part, and the second folding ring part and the third folding ring part are respectively connected with the corresponding inner side fixing part and the corresponding magnetic conductive front cover;
the intermediate portion is arranged between the first flange portion and the second flange portion and between the second flange portion and the third flange portion, and between the second flange portion and the third flange portion.
In addition, the preferred structure is that the connection framework comprises a main body part and a fixing part, and the two voice coils are respectively fixed on the corresponding main body parts of the connection framework and are connected with the double-hole ball top through the fixing part.
In addition, the preferred structure is that the vibration subassembly still includes the centering piece, the centering piece is used for connecting connect the skeleton with the casing, wherein, the voice coil loudspeaker voice coil through corresponding connect the skeleton, the centering piece with the casing is connected.
The invention also provides electronic equipment, which comprises a shell and a double-sided sound generating device arranged in the shell, wherein the double-sided sound generating device adopts the double-sided sound generating device,
the shell comprises a top wall, a bottom wall and a side wall, the side wall is provided with a side sound outlet, two groups of vibration components of the double-sided sound production device are respectively a first vibration component and a second vibration component, the first vibration component is connected with the top wall, the second vibration component is connected with the bottom wall, wherein,
the first vibration assembly comprises a first double-hole diaphragm, wherein a first side sound outlet channel is formed among the first double-hole diaphragm, the top wall and the side wall, or a positive sound outlet channel is formed among the first double-hole diaphragm and the top wall;
the second vibration assembly comprises a second dual-hole diaphragm, wherein a second side sound outlet channel is formed among the second dual-hole diaphragm, the bottom wall and the side wall, and the second side sound outlet channel is communicated with the side sound outlet hole.
In addition, it is preferable that, when a first side sound outlet channel is formed among the first double-hole diaphragm, the top wall, and the side wall, the first side sound outlet channel is communicated with the side sound outlet hole;
the second side sound outlet channel is communicated with the first side sound outlet channel through the side sound outlet hole.
In addition, preferably, when a front sound emitting channel is formed between the first dual-hole diaphragm and the top wall, a front sound emitting hole is provided in a position of the top wall corresponding to the first dual-hole diaphragm, and the front sound emitting hole is communicated with the front sound emitting channel. In addition, the preferable structure is that the first vibration component comprises a first magnetic conductive front cover and a second magnetic conductive front cover, the second vibration component comprises a third magnetic conductive front cover and a fourth magnetic conductive front cover, wherein,
the first magnetic conductive front cover and the second magnetic conductive front cover are respectively attached to the top wall;
the third magnetic conductive front cover and the fourth magnetic conductive front cover are respectively attached to the bottom wall, or a cavity for accommodating other components is arranged between the third magnetic conductive front cover and the bottom wall and between the fourth magnetic conductive front cover and the bottom wall.
According to the technical scheme, 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, and each group of magnetic circuit assemblies simultaneously drives the voice coils on the upper side and the lower side so that the two groups of vibration assemblies simultaneously reversely vibrate to eliminate vibration inductance; moreover, the double-hole diaphragm can finish sound production action through the front side or the side surface of the double-sided sound production device, and the thickness of the double-sided sound production device applied to the electronic equipment can be reduced.
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. Further, the present invention is intended to include all such aspects and their equivalents.
Drawings
Other objects and results of the present invention will become more apparent and more readily appreciated by reference to the following description taken in conjunction with the accompanying drawings, and as the invention is more fully understood. In the drawings:
fig. 1 is an exploded view of a dual-sided sound emitting device according to an embodiment of the present invention;
fig. 2 is a schematic perspective view of a double-sided sound generating device according to an embodiment of the present invention;
FIG. 3 is a cross-sectional view taken along line A-A of FIG. 2;
FIGS. 4 and 5 are sectional views taken along line B-B of FIG. 2;
FIG. 6 is an enlarged view of a portion of FIG. 5;
fig. 7 and 8 are schematic diagrams of the magnetizing directions of the magnets of the double-sided sound generating device according to the embodiment of the invention;
fig. 9 is a schematic structural diagram of a side sound outlet duct and a side sound outlet hole of an electronic device according to an embodiment of the present invention;
fig. 10 is a schematic structural diagram of a side sound outlet duct and a front sound outlet hole of an electronic device according to an embodiment of the present invention.
Wherein the reference numerals include: 10. a first vibrating component, 11, a first double-hole diaphragm, 121, a first magnetic conductive front cover, 122, a second magnetic conductive front cover, 13, a first double-hole dome, 141, a first connecting skeleton, 142, a second connecting skeleton, 151, a first voice coil, 152, a second voice coil, 16, a centering strut, 20, a second vibrating component, 21, a second double-hole diaphragm, 221, a third magnetic conductive front cover, 222, a fourth magnetic conductive front cover, 23, a second double-hole dome, 241, a third connecting skeleton, 242, a fourth connecting skeleton, 251, a third voice coil, 252, a fourth voice coil, 26, a centering strut, 30, a first magnetic circuit component, 310, a center magnet, 311, a first center magnet, 312, a second center magnet, 313, a third center magnet, 320, a side magnet, 321, a first side magnet, 322, a second side magnet, a third side magnet, 330, a center plate, 331, a magnetic conductive plate, 332. a second central magnetic conductive plate, 340, a side magnetic conductive plate, 341, a first side magnetic conductive plate, 342, a second side magnetic conductive plate, 40, a second magnetic circuit component, 50, a first shell, 60, and a second shell; 100. two-sided sound emitting device, 200, electronic equipment, 210, bottom wall, 220, roof, 230, second side sound emitting channel, 240, first side sound emitting channel, 250, side sound emitting hole, 261, first sound emitting hole, 262, second sound emitting hole.
The same reference numbers in all figures indicate 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 is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, but are not intended to indicate or imply that the device or element so referred to must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner, and are not to be construed as limiting the invention.
The invention provides a double-sided sound production device and electronic equipment, aiming at solving the problems that the existing double-sided sound production device is large in thickness, capable of reducing sound leakage, eliminating vibration sense and the like when applied to a whole machine.
Specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
In order to illustrate the structure of the double-sided sound generating device provided by the present invention, fig. 1 to 8 are exemplarily illustrated from different angles, respectively. Specifically, fig. 1 shows an exploded structure of a double-sided sound emitting device according to an embodiment of the present invention; fig. 2 shows a three-dimensional structure of a double-sided sound emitting device according to an embodiment of the invention; FIG. 3 shows a cross-sectional structure of FIG. 2 along A-A; FIGS. 4 and 5 show cross-sectional structures taken along B-B of FIG. 2, respectively; FIG. 6 is an enlarged view of a portion of FIG. 5; fig. 7 and 8 respectively show the magnet magnetizing directions of the double-sided sound production device according to the embodiment of the invention.
As shown in fig. 1 to 8, the double-sided sound generating device provided by the present invention includes a housing, two sets of vibration components fixed to the housing, and two sets of magnetic circuit components, wherein the vibration components include a dual-hole diaphragm, a dual-hole dome disposed in a planar region of the dual-hole diaphragm, two connection frames, and two voice coils, and the two voice coils are fixed to the dual-hole dome through the connection frames; the magnetic circuit assembly comprises a central magnetic circuit and a side magnetic circuit, and a magnetic gap is formed between the central magnetic circuit and the side magnetic circuit; two sets of magnetic circuit component levels set up, and two sets of vibration subassemblies set up two voice coils of every group vibration subassembly along the vibration direction symmetry of vibration subassembly and set up respectively in corresponding magnetic circuit component's magnetic gap, two sets of magnetic circuit component drive simultaneously every two voice coils of group vibration subassembly and with two hole ball tops that the voice coil loudspeaker voice coil was fixed mutually.
Specifically, the double-sided sound generating apparatus of the present invention includes a housing, a first vibration component 10, a second vibration component 20, a first magnetic circuit component 30, and a second magnetic circuit component 40 fixed to the housing, wherein the first vibration component 10 includes a first dual-hole diaphragm 11, a first dual-hole dome 13 disposed in a planar area of the first dual-hole diaphragm, a first connection bobbin 141, a second connection bobbin 142, a first voice coil 151, and a second voice coil 152, wherein the first voice coil 151 is fixed to the first connection bobbin 141, the second voice coil 152 is fixed to the second connection bobbin 142, the first voice coil 151 is fixed to the first dual-hole dome 13 through the first connection bobbin 141, and the second voice coil 152 is connected to the first dual-hole dome 13 through the second connection bobbin 142.
The second vibration assembly 20 includes a second dual-hole diaphragm 21, a second dual-hole dome 23 disposed in a planar region of the second dual-hole diaphragm 21, a third connection bobbin 241, a fourth connection bobbin 242, a third voice coil 251, and a fourth voice coil 252, wherein the third voice coil 251 is fixed to the third connection bobbin 241, the fourth voice coil 252 is fixed to the fourth connection bobbin 242, the third voice coil 251 is fixed to the second dual-hole dome 23 through the third connection bobbin 241, and the fourth voice coil 252 is connected to the second dual-hole dome 23 through the fourth connection bobbin 242.
The first magnetic circuit assembly 30 includes a first central magnetic circuit and a first side magnetic circuit, 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, and a second magnetic gap is formed between the second center magnetic circuit and the second side magnetic circuit.
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, and are symmetrically arranged at the upper and lower sides of the first magnetic circuit assembly 30 and the second magnetic circuit assembly 40, the first voice coil 151 of the first vibration assembly 10 is arranged in the 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 the 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 the 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 drives the first and third voice coils 151 and 251 to vibrate simultaneously, and the second magnetic circuit assembly 40 drives the second and fourth voice coils 152 and 252 to vibrate simultaneously, so that the vibration directions of the first and second voice coils 151 and 152 are opposite to the vibration directions of the third and fourth voice coils 251 and 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 sensation can be offset.
In the embodiment of the invention, two groups of vibration assemblies are respectively and symmetrically arranged at the upper side and the lower side of two groups of magnetic circuit assemblies to respectively form two sound-emitting surfaces, namely a first sound-emitting surface and a second sound-emitting surface, and the double-hole vibrating diaphragm of the vibration assembly is lower than the top surface of the central magnetic circuit of the magnetic circuit assembly, so that the vibration assembly can be used as a sound-emitting radiation surface through the height difference when being applied to the whole machine.
In the implementation of the present invention, the central magnetic circuit includes three central magnets 310 and two central magnetic plates 330, and the central magnets 310 are spaced apart by the central magnetic plates 330. The three central magnets 310 are a first central magnet 311 located at an upper layer, a second central magnet 312 located at an intermediate layer, and a third central magnet 313 located at a lower layer.
In the embodiments shown in fig. 2, 3, 4, 5 and 6, the two sets of magnetic circuit assemblies are the first magnetic circuit assembly 30 and the second magnetic circuit assembly 40, respectively, wherein the first magnetic circuit assembly 30 includes a first central magnetic circuit and a first side magnetic circuit. The first central magnetic circuit comprises a first central magnet 311, a first central magnetic conductive plate 331, a second central magnet 312, a second central magnetic conductive plate 332 and a third central magnet 313 from top to bottom in sequence; the first side magnetic circuit is arranged around the first central magnetic circuit, and the first side magnetic circuit sequentially comprises a first side magnet 321, a first side magnetic conductive plate 341, a second side magnet 322, a second side magnetic conductive plate 342 and a third side magnet 323 from top to bottom. The specific structure of the center magnetic circuit of the second magnetic circuit assembly 40 is identical to the specific structure of the first center magnetic circuit of the first magnetic circuit assembly 30, and the specific structure of the side magnetic circuit of the second magnetic circuit assembly 40 is identical to the specific structure of the first side magnetic circuit.
In the embodiment shown in fig. 7 and 8, the magnetizing modes of the central magnetic circuit include two modes, and different magnetizing modes are realized according to the arrangement mode of the central magnet; the three center magnets are specifically arranged as follows: the adjacent ends of any two adjacent central magnets in the three central magnets have the same polarity. Specifically, the three center magnets are a first center magnet 311 located at the upper layer, a second center magnet 312 located at the intermediate layer, and a third center magnet 313 located at the lower layer, respectively, the polarity of the magnetic pole of 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 of the end of the second center magnet 312 opposite to the first center magnet 311, and the polarity of the magnetic pole of 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 of the end of the third center magnet 313 opposite to the second center magnet 312.
That is, in the central magnetic circuit, three central magnets are arranged at intervals, and the first central magnet 311, the second central magnet 312 and the third central magnet 313 have south poles and north poles, respectively, wherein the south pole of the first central magnet 311 is arranged opposite to the south pole of the second central magnet 312, and the south pole of the other end of the second central magnet 312 is arranged opposite to the south pole of the third central magnet 313; alternatively, 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; therefore, the magnetic force lines of the central magnet are concentrated on the central magnetic conduction plate, and the magnetic force lines penetrate through the voice coil through the central magnetic conduction plate, so that the driving force is improved. In the embodiment shown in fig. 6 and 7, the polarity of both ends of the second center magnet is the same, and the polarity of the end portion thereof is also the same as that of the adjacent center magnet.
Because 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 of an annular structure having a hollow region, and a portion of the first center magnet and a portion of the second center magnet are both located in the hollow region, that is: the first and second central magnets of the first magnetic circuit assembly 30 simultaneously provide 151 a magnetic field for the first voice coil 151, so that the first voice coil 151 vibrates under the simultaneous action of the alternating current passing through the first voice coil 151, the magnetic field of the first central magnet of the first magnetic circuit assembly 30, and the magnetic field of the second central magnet of the first magnetic circuit assembly 30; the first and second center magnets of the second magnetic circuit assembly 40 simultaneously provide a magnetic field to the second voice coil 152, such 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.
Because the second vibration assembly comprises a third voice coil 251 and a fourth voice coil 252, the third voice coil 251 is sleeved outside the second central magnet and the third central magnet of the first magnetic circuit assembly 30, and the fourth voice coil 252 is sleeved outside the second central magnet and the third central magnet of the second magnetic circuit assembly 40; the third voice coil 251 and the fourth voice coil 252 are both of an annular structure having a hollow region, and a portion of the second central magnet and a portion of the third central magnet are both located in the hollow region, that is: the second central magnet and the third central 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 action of the alternating current passing through the third voice coil 251, the magnetic field of the second central magnet of the first magnetic circuit assembly 30 and the magnetic field of the second central magnet of the third magnetic circuit assembly; the second center magnet and the third center magnet of the second magnetic circuit assembly 40 provide magnetic fields to the fourth voice coil 252 at the same time, so that the fourth voice coil 252 vibrates under the simultaneous action 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 the embodiment of the present invention, the side magnetic circuit includes three side magnets 320 and two side magnetic plates 340, and the three side magnets are disposed at intervals by the two side magnetic plates, wherein the side magnetic plates are disposed on the housing. Specifically, the side magnetic circuit comprises, in order from top to bottom: first side magnet 321, first side magnetic conductive plate 341, second side magnet 322, second side magnetic conductive plate 342 and third side magnet 323, first side magnetic conductive plate 341, second side magnetic conductive plate 342 at least one set up on the casing, in concrete application, according to the demand, the side magnetic conductive plate can also be moulded plastics on the casing, with the casing injection moulding.
In an embodiment of the invention, the double-hole diaphragm comprises an outer fixing part, three folding ring parts, an inner fixing part and a middle part, wherein the outer fixing part is fixed with the shell, the inner fixing part is fixed with the magnetic conductive front cover, the three folding ring parts are all of an inward concave structure and respectively comprise a first folding ring part, a second folding ring part, a third folding ring part and a middle part, 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 magnetic conductive front cover; the intermediate part sets up first flange portion with second flange portion, between the third flange portion, and, set up second flange portion with between the third flange portion.
The double-hole ball top comprises a ball top body part and two avoiding spaces arranged in the central area of the ball top body part, wherein the ball top body part is arranged on the middle part, and the two avoiding spaces are used for avoiding two sets of magnetic circuit assemblies. Since the second dual-hole dome is the same as the first dual-hole dome, taking the first dual-hole dome as an example for specific description, the first dual-hole dome 13 includes a first dome body portion, and a first avoidance space and a second avoidance space which are disposed in the first dome body portion, where the first avoidance space is used for avoiding the first magnetic circuit component 30, and the second avoidance space is used for avoiding the second magnetic circuit component.
Wherein, diplopore dome and diplopore vibrating diaphragm are integrated into one piece structure. In specific application, according to actual conditions, the double-hole ball top and the double-hole vibrating diaphragm can be designed into an integrally formed structure, and the double-hole ball top and the double-hole vibrating diaphragm can be fixed more tightly.
In an embodiment of the present invention, the vibration assembly further includes two magnetic conductive front covers, the magnetic conductive front covers are fixed on the dual-hole diaphragm, and the magnetic conductive front covers are adapted to a central area of the dual-hole diaphragm, and the magnetic conductive front covers are respectively symmetrically disposed on upper and lower sides of the magnetic circuit assembly, and respectively attached to central magnets located at two ends of the three central magnets, that is: respectively connected with the first central magnet and the third central magnet.
The first vibration assembly 10 includes a first magnetic conductive front cover 121 and a second magnetic conductive front cover 122, and the first magnetic conductive front cover 121 and the second magnetic conductive front cover 122 are respectively disposed on the first dual-hole diaphragm 11, and the two magnetic conductive front covers are adapted to the hollow portion of the central area of the first dual-hole diaphragm 11. The second vibration component includes a third magnetic conductive front cover 221 and a fourth magnetic conductive front cover 222, which are respectively disposed on the second dual-hole diaphragm 21, and the third magnetic conductive front cover 221 and the fourth magnetic conductive front cover 222 are respectively adapted to a central hollow area of the second dual-hole diaphragm 21.
In addition, the first and third magnetic conductive front covers 121 and 221 are symmetrically disposed on the upper and lower sides of the first magnetic circuit assembly 30, respectively, the first magnetic conductive front cover 121 is attached to the first central magnet, and the second magnetic conductive front cover 122 is attached to the third central magnet; the second magnetic front cover 122 and the fourth magnetic front cover 222 are symmetrically disposed on the upper side and the lower side of the second magnetic circuit assembly 40, respectively, the second magnetic front cover 122 is attached to the first central magnet of the second magnetic circuit assembly 40, and the fourth magnetic front cover 222 is attached to the third central magnet of the second magnetic circuit assembly 40.
In the embodiment of the present invention, the number of the housings is two, the first housing 50 and the second housing 60, each of which is fixed to the corresponding vibration assembly, and each of which is fixed to the corresponding magnetic circuit assembly.
In addition, in the embodiment of the present invention, the vibration assembly further includes a centering branch piece, the centering branch piece is connected with the connection bobbin and the housing, wherein the voice coil is connected with the housing through the corresponding connection bobbin and the centering branch piece. The connection framework comprises a main body part of an annular structure matched with the voice coil and fixing parts arranged at four corners of the annular structure, wherein the annular structure is fixed with the voice coil, the fixing parts are fixed at the top of the double-hole ball, and the fixing parts are connected with the centering support piece.
Specifically, every structure of connecting the skeleton is the same completely, includes two respectively at every vibration subassembly and connects the skeleton, all is provided with a fixed part in four bights of every connection skeleton to main part and fixed position integrated into one piece structure. The fixing part comprises a connecting part connected with the main body part, a supporting part and positioning parts respectively arranged on two sides of the supporting part, one end of the supporting part is fixed with the connecting part, the other end of the supporting part is connected with the positioning parts, a bending part is arranged between the supporting part and the positioning parts, and the supporting part is connected with the positioning parts through the bending part. The positioning part is fixed on the double-hole ball top, and the fixing part is fixed with the double-hole ball top through the positioning part.
Specifically, the first vibration assembly 10 includes four spider 16, two connection bobbins (the first connection bobbin 141 and the second connection bobbin 142), two voice coils (the first voice coil 151 and the second voice coil 152), that is: the first voice coil 151 is disposed on the first connecting frame 141, the second voice coil 152 is disposed on the second connecting frame 142, two centering legs are disposed at corners of the first connecting frame 141 and fixed to the first housing 50, and two centering legs are disposed at corners of the second connecting frame 142 and fixed to the first housing 50. Because first connection skeleton 141, second connection skeleton 142 all are fixed with first two-hole dome 13 looks stationary phase, also are fixed mutually with first voice coil 151, second voice coil 152 simultaneously, promptly: 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 double-hole dome 13, and thus the first and second voice coils 151 and 152 simultaneously provide a driving force to the first double-hole dome 13.
Similarly, the second vibration component includes four centering fins 26, two connection skeletons (third connection skeleton 241 and fourth connection skeleton 242), and two voice coils (third voice coil 251 and fourth voice coil 252), the third voice coil 251 is disposed on the third connection skeleton 241, the fourth voice coil 252 is disposed on the fourth connection skeleton 242, the corner of the third connection skeleton 241 is provided with two centering fins fixed with the second housing 60, and the corner of the fourth connection skeleton 242 is provided with two centering fins fixed with the second housing 60. The third and fourth connection bobbins 242 and 242 connect the voice coils (the third and fourth voice coils 251 and 252) and the second dual hole dome 23, and thus, the third and fourth voice coils 251 and 252 simultaneously provide a driving force to the second dual hole dome 23.
In addition, the present invention further provides an electronic device, as shown in fig. 9 and fig. 10, the electronic device includes a housing and a dual-sided sound generating apparatus 100 disposed in the housing, where the dual-sided sound generating apparatus 100 employs the above dual-sided sound generating apparatus, where the housing includes a top wall 220, a bottom wall 210 and a side wall, the side wall is provided with a side sound outlet 250, two sets of vibration components of the dual-sided sound generating apparatus are a first vibration component and a second vibration component, respectively, the first vibration component is connected to the top wall 220, the second vibration component is connected to the bottom wall 210, where the first vibration component includes a first dual-hole diaphragm, where a first side sound outlet channel 240 is formed between the first dual-hole diaphragm, the top wall 220 and the side wall, or a positive sound outlet channel is formed between the first dual-hole diaphragm and the top wall 220; the second vibration assembly includes a second dual-aperture diaphragm, wherein a second side sound outlet channel 230 is formed among the second dual-aperture diaphragm, the bottom wall 210 and the sidewall, and the second side sound outlet channel 230 is communicated with the side sound outlet hole 250.
In the embodiment shown in fig. 9, a first side sound outlet channel 240 is formed among the first dual-hole diaphragm, the top wall 220 and the side wall, and the first side sound outlet channel 240 is communicated with the side sound outlet hole 250; the second side sound outlet channel 230 communicates with the first side sound outlet channel 240 through the side sound outlet hole 250. Namely: the sound outlet channel of each sound producing surface is a side sound outlet channel, and the two side sound outlet channels are communicated with the sound outlet hole on the same side.
In the implementation shown in fig. 10, a front sound emitting channel is formed between the first dual-hole diaphragm and the top wall, and a front sound emitting hole is disposed on the top wall at a position corresponding to the first dual-hole diaphragm, and the front sound emitting hole is communicated with the front sound emitting channel. Namely: front sound holes, namely a first sound hole 261 and a second sound hole 262, are arranged on the top wall at positions corresponding to the first double-hole diaphragm 11. The sound outlet channel of one sound outlet surface is a second side sound outlet channel 230, the second side sound outlet channel 230 is communicated with the side sound outlet hole 250, the sound outlet channel of the other sound outlet surface is a front sound outlet channel, and the front sound outlet channel is communicated with the front sound outlet hole.
In the embodiment shown in fig. 9 and 10, the electronic device 200 and the double-sided sound generating apparatus 100 are assembled in two forms, specifically: the double-sided sound generating device 100 further includes a first magnetic conductive front cover 121 and a second magnetic conductive front cover 122 of the first vibration assembly, and a third magnetic conductive front cover 221 and a fourth magnetic conductive front cover 222 of the second vibration assembly 20, wherein the top wall 220 is attached to the first magnetic conductive front cover 121 and the second magnetic conductive front cover 122; the third magnetic conductive front cover 221 and the fourth magnetic conductive front cover 222 are attached to the bottom wall 210, or a cavity for accommodating other components is provided between the third magnetic conductive front cover 221, the fourth magnetic conductive front cover 222 and the bottom wall 210. In specific application, a proper assembly form is selected according to actual requirements. In addition, in the embodiment of the invention, the sound outlet pipeline design structure in different modes is adopted according to the requirement, and stereo sound can be realized through different sound pipeline designs.
In the embodiment of the invention, the heights of the top of the first double-hole ball and the top of the second annular ball are lower than the top surface of the central magnetic circuit in the magnetic circuit assembly, and the vibrating diaphragm can directly finish the sound production action through the front surface or the side surface of the sound production device by the design structure.
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, and each group of magnetic circuit assemblies simultaneously drive the voice coils on the upper side and the lower side, so that the two groups of vibration assemblies simultaneously reversely vibrate to eliminate vibration; and, adopt the structural design that diplopore dome is less than the magnetic circuit top surface, can make the front of two-sided sound generating mechanism or side accomplish the action of making a sound, can guarantee under the prerequisite of sound production radiating surface for the size of whole device is thinner, and then reduces the thickness of two-sided sound generating mechanism when using electronic equipment.
The double-sided sound emitting device and the electronic apparatus proposed according to the present invention are described above by way of example with reference to the accompanying drawings. However, it should be understood by those skilled in the art that various modifications may be made to the dual-sided sound emitting device and the electronic device of the present invention without departing from the scope of the present invention. Accordingly, the scope of the invention should be determined from the content of the appended claims.
Claims (13)
1. A double-sided sound production 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 in a plane area of the double-hole vibrating diaphragm, a connecting framework and two voice coils, wherein the two voice coils are fixed with the double-hole ball top through the connecting framework;
the magnetic circuit assembly comprises a central magnetic circuit and a side magnetic circuit, and a magnetic gap is formed between the central magnetic circuit and the side magnetic circuit;
the two groups of magnetic circuit assemblies are horizontally arranged, the vibration assemblies are symmetrically arranged along the vibration direction of the vibration assemblies, two voice coils of each group of vibration assemblies are respectively arranged in the magnetic gaps of the corresponding magnetic circuit assemblies, and the two groups of magnetic circuit assemblies simultaneously drive the two voice coils of each group of vibration assemblies and the double-hole ball tops fixed with the two voice coils.
2. The dual sided sound generating apparatus of claim 1,
the central magnetic circuit comprises three central magnets and two central magnetic conduction plates, and the three central magnets are arranged at intervals through the two central magnetic conduction plates.
3. A dual sided sound generating device as recited in claim 2,
the adjacent ends of any two adjacent central magnets in the three central magnets have the same polarity.
4. The dual sided sound generating apparatus of claim 1,
the side magnetic circuit comprises three side magnets and two side magnetic conductive plates, the three side magnets are arranged at intervals through the two side magnetic conductive plates, and the side magnetic conductive plates are arranged on the shell.
5. A dual sided sound generating apparatus as recited in claim 3,
each vibration component also comprises two magnetic conductive front covers which are fixed on the double-hole vibrating diaphragm and are matched with the central hollow-out area of the double-hole vibrating diaphragm, wherein,
the magnetic conductive front covers corresponding to the vibration assemblies are symmetrically arranged on the upper side and the lower side of the corresponding magnetic circuit assemblies respectively and are attached to the central magnets at the two ends of the three central magnets respectively.
6. A dual sided sound generating apparatus as recited in claim 5,
the number of the shells is two, and each shell is fixed with the corresponding vibration component and the corresponding magnetic circuit component.
7. A dual sided sound generating apparatus as recited in claim 6,
the double-hole diaphragm comprises an outer side fixing part, an inner side fixing part, three folding ring parts and a middle part, wherein the outer side fixing part is fixed with the shell, the inner side fixing part is fixed with the magnetic conduction front cover, the three folding ring parts are all of inwards concave structures and are respectively a first folding ring part, a second folding ring part and a third folding ring part, wherein,
the first folding ring part is connected with the shell through the outer side fixing part, and the second folding ring part and the third folding ring part are respectively connected with the corresponding inner side fixing part and the corresponding magnetic conductive front cover;
the intermediate part sets up first ring portion of rolling over with the second ring portion of rolling over, between the third ring portion of rolling over, and, set up the second ring portion of rolling over with between the third ring portion of rolling over.
8. A dual sided sound generating apparatus as recited in claim 7,
the connection framework comprises a main body part and a fixing part, and the two voice coils are respectively fixed on the corresponding main body part of the connection framework and are fixed with the top of the double-hole ball through the fixing part.
9. The dual sided sound generating apparatus of claim 8,
the vibration component further comprises a centering support piece, the centering support piece is used for being connected with the connecting framework and the shell, wherein the voice coil is connected with the shell through the corresponding connecting framework and the corresponding centering support piece.
10. An electronic device comprising a housing and a dual-sided sound emitting device disposed in the housing, wherein the dual-sided sound emitting device is the dual-sided sound emitting device of any one of claims 1 to 9,
the shell comprises a top wall, a bottom wall and a side wall, wherein the side wall is provided with a side sound outlet hole, two groups of vibration assemblies of the double-sided sound production device are respectively a first vibration assembly and a second vibration assembly, the first vibration assembly is connected with the top wall, the second vibration assembly is connected with the bottom wall, wherein,
the first vibration assembly comprises a first double-hole diaphragm, wherein a first side sound outlet channel is formed among the first double-hole diaphragm, the top wall and the side wall, or a positive sound outlet channel is formed among the first double-hole diaphragm and the top wall;
the second vibration assembly comprises a second dual-hole diaphragm, wherein a second side sound outlet channel is formed among the second dual-hole diaphragm, the bottom wall and the side wall, and the second side sound outlet channel is communicated with the side sound outlet hole.
11. The electronic device of claim 10,
when a first side sound outlet channel is formed among the first double-hole diaphragm, the top wall and the side wall, the first side sound outlet channel is communicated with the side sound outlet hole;
the second side sound outlet channel is communicated with the first side sound outlet channel through the side sound outlet hole.
12. The electronic device of claim 10,
when a positive sound outlet channel is formed between the first double-hole vibrating diaphragm and the top wall, a front sound outlet hole is formed in the top wall at a position corresponding to the first double-hole vibrating diaphragm, and the front sound outlet hole is communicated with the positive sound outlet channel.
13. The electronic device of claim 10,
the first vibration component comprises a first magnetic conductive front cover and a second magnetic conductive front cover, the second vibration component comprises a third magnetic conductive front cover and a fourth magnetic conductive front cover, wherein,
the first magnetic conductive front cover and the second magnetic conductive front cover are respectively attached to the top wall;
the third magnetic conductive front cover and the fourth magnetic conductive front cover are respectively attached to the bottom wall; alternatively, the first and second electrodes may be,
and a cavity for accommodating other components is arranged between the third magnetic conductive front cover, the fourth magnetic conductive front cover and the bottom wall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202210335414.4A CN114928797A (en) | 2022-03-31 | 2022-03-31 | Double-sided sound production device and electronic equipment |
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| CN202210335414.4A CN114928797A (en) | 2022-03-31 | 2022-03-31 | Double-sided sound production device and electronic equipment |
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Cited By (1)
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| CN116600238A (en) * | 2023-07-19 | 2023-08-15 | 荣耀终端有限公司 | Speaker subassembly and electronic equipment |
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