CN114928797B - Double-sided sound production device and electronic equipment - Google Patents
Double-sided sound production device and electronic equipment Download PDFInfo
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- CN114928797B CN114928797B CN202210335414.4A CN202210335414A CN114928797B CN 114928797 B CN114928797 B CN 114928797B CN 202210335414 A CN202210335414 A CN 202210335414A CN 114928797 B CN114928797 B CN 114928797B
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- 238000000429 assembly Methods 0.000 claims description 37
- 230000009977 dual effect Effects 0.000 claims 5
- 230000008030 elimination Effects 0.000 abstract description 2
- 238000003379 elimination reaction Methods 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 4
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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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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- 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 arranged on the double-hole vibrating diaphragm, two connecting frameworks and two voice coils, and the two voice coils are fixed with the double-hole dome through the connecting frameworks; 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 components are horizontally arranged, the two groups of vibration components are symmetrically arranged along the vibration direction of the vibration components, and the two groups of magnetic circuit components simultaneously drive two voice coils of each group of vibration components and a double-hole ball top fixed with the two voice coils. 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 dome arranged in the 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 dome through the connecting frameworks;
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 two groups of vibration assemblies are symmetrically arranged along the vibration direction of the vibration assemblies, and the 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 dome fixed with the two voice coils.
Further, 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 through the two central magnetic conductive plates.
In addition, it is preferable that the polarities of adjacent ends of any two adjacent ones of the three center magnets be 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 arranged at intervals by two side magnetic plates, wherein the side magnetic plates are arranged on the housing.
In addition, each vibration component also comprises two magnetic conduction front covers which are fixed on the double-hole vibrating diaphragm and are matched with the hollow-out area in the center of the double-hole vibrating diaphragm, wherein,
The corresponding magnetic conduction front covers of each vibration assembly are symmetrically arranged on the upper side and the lower side of the corresponding magnetic circuit assembly respectively and are respectively attached to the center magnets positioned at the two ends of the three center magnets.
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 double-hole vibrating diaphragm preferably comprises an outer fixing part, an inner fixing part, three ring folding parts and a middle part, wherein the outer fixing part is fixed with the shell, the inner fixing part is fixed with the magnetic conduction front cover, the three ring folding parts are all of inward concave structures and are respectively a first ring folding part, a second ring folding part and a third ring folding part, 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 magnetic conduction front cover;
the intermediate portion is disposed between the first and second and third annular portions, and between the second and third annular portions.
In addition, preferably, the connecting frame comprises a main body part and a fixing part, and the two voice coils are respectively fixed on the main body parts of the corresponding connecting frames and are connected with the double-hole dome through the fixing part.
In addition, the preferred structure is that the vibration assembly further comprises a centering support piece, wherein the centering support piece is used for connecting the connecting framework and the shell, and the voice coil is connected with the shell through the corresponding connecting framework and the centering support piece.
The invention also provides an electronic device, 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 generating 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,
The first vibration component comprises a first double-hole vibrating diaphragm, wherein a first side sound outlet channel is formed among the first double-hole vibrating diaphragm, the top wall and the side wall, or a positive sound outlet channel is formed among the first double-hole vibrating diaphragm and the top wall;
the second vibration component comprises a second double-hole vibrating diaphragm, wherein a second side sound outlet channel is formed among the second double-hole vibrating diaphragm, the bottom wall and the side wall, and the second side sound outlet channel is communicated with the side sound outlet.
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 positive sound outlet channel is formed between the first double-hole diaphragm and the top wall, a positive sound outlet hole is arranged on the top wall at a position corresponding to the first double-hole diaphragm, and the positive sound outlet hole is communicated with the positive sound outlet channel. In addition, the first vibration component comprises a first magnetic conduction front cover and a second magnetic conduction front cover, the second vibration component comprises a third magnetic conduction front cover and a fourth magnetic conduction front cover, wherein,
The first magnetic conduction front cover and the second magnetic conduction front cover are respectively attached to the top wall;
And the third magnetic conduction front cover and the fourth magnetic conduction front cover are respectively attached to the bottom wall, or a cavity for accommodating other parts is formed between the third magnetic conduction front cover, the fourth magnetic conduction front cover and the bottom wall.
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 sense; and moreover, the double-hole vibrating diaphragm can finish the sounding action through the front surface or the side surface of the double-sided sounding device, so that the thickness of the double-sided sounding device applied to 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. 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 perspective view of a dual-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 of FIG. 2 taken along line B-B, respectively;
FIG. 6 is an enlarged view of a portion of FIG. 5;
Fig. 7 and 8 are schematic diagrams of magnetizing directions of magnets of a double-sided sound generating device according to an embodiment of the present invention;
Fig. 9 is a schematic diagram of a side sound outlet and a side sound outlet of an electronic device according to an embodiment of the present invention;
fig. 10 is a schematic diagram of a side sound outlet and a front sound outlet of an electronic device according to an embodiment of the invention.
Wherein reference numerals include: 10. a first vibration assembly 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 connection frame, 142, a second connection frame, 151, a first voice coil, 152, a second voice coil, 16, a centering support piece, 20, a second vibration assembly, 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 connection frame, 242, a fourth connection frame, 251, a third voice coil, 252, a fourth voice coil, 26, a centering support piece, 30, a first magnetic circuit assembly, 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, 323, a third side magnet, 330, a center magnetic conductive plate, 331, a first center magnetic conductive plate, 332, a second center magnetic conductive plate, 340, a side plate, a first side magnet, 342, a second side magnetic conductive plate, a second side magnetic circuit assembly, a first magnetic circuit assembly, a second magnetic circuit assembly, a magnetic circuit assembly, and a first magnetic circuit assembly, a magnetic circuit assembly, and a second magnetic); 100. the double-sided sound generating device 200, the electronic equipment 210, the bottom wall, the top wall, the 230, the second side sound emitting channel, the 240, the first side sound emitting channel, the 250, the side sound emitting holes 261, the first sound emitting holes, 262 and the second sound emitting holes.
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 8 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 two-sided sound emitting device perspective structure in accordance with an embodiment of the present invention; FIG. 3 shows the cross-sectional structure of FIG. 2 along A-A; FIGS. 4 and 5 show the cross-sectional structure of FIG. 2 along B-B, respectively; FIG. 6 is a partially enlarged structure of FIG. 5; fig. 7 and 8 show the magnetizing directions of the magnets of the double-sided sound emitting device according to the embodiment of the present invention, respectively.
As shown in fig. 1 to 8 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 in a plane area of the double-hole vibrating diaphragm, two connecting frameworks and two voice coils, and the two voice coils are fixed with the double-hole dome through the connecting frameworks; 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 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 the two voice coils of each group of vibration assemblies and the double-hole ball top fixed with the two voice coils are driven by the two groups of magnetic circuit assemblies simultaneously.
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 in a planar area of the first double-hole diaphragm, a first connection frame 141, a second connection frame 142, a first voice coil 151, and a second voice coil 152, wherein the first voice coil 151 is fixed to the first connection frame 141, the second voice coil 152 is fixed to the second connection frame 142, the first voice coil 151 is fixed to the first double-hole dome 13 through the first connection frame 141, and the second voice coil 152 is connected to the first double-hole dome 13 through the second connection frame 142.
The second vibration assembly 20 includes a second dual-hole diaphragm 21, a second dual-hole dome 23 disposed in a planar area of the second dual-hole diaphragm 21, a third connection frame 241, a fourth connection frame 242, a third voice coil 251, and a fourth voice coil 252, wherein the third voice coil 251 is fixed on the third connection frame 241, the fourth voice coil 252 is fixed on the fourth connection frame 242, the third voice coil 251 is fixed with the second dual-hole dome 23 through the third connection frame 241, and the fourth voice coil 252 is connected with the second dual-hole dome 23 through the fourth connection frame 242.
The first magnetic circuit assembly 30 includes a first center magnetic circuit and a first side magnetic circuit, with a first magnetic gap formed therebetween; 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.
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 embodiment of the invention, two groups of vibration components are symmetrically arranged on the upper side and the lower side of the 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 the double-hole vibrating diaphragm of the vibration component is lower than the top surface of the central magnetic circuit of the magnetic circuit component, so that the double-hole vibrating diaphragm can be used as a sound radiation surface through the height difference when the double-hole vibrating diaphragm is applied to a whole machine.
In the practice of the present invention, the central magnetic circuit includes three central magnets 310 and two central magnetically permeable plates 330, and the central magnets 310 are spaced apart by the central magnetically permeable plates 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 embodiments shown in fig. 2, 3, 4, 5 and 6, 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 central 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 magnetically permeable plate 331, a second central magnet 312, a second central magnetically permeable plate 332, and a third central magnet 313; the first side magnetic circuit is disposed around the first center magnetic circuit, and includes, in order from top to bottom, a first side magnet 321, a first side magnetic permeable plate 341, a second side magnet 322, a second side magnetic permeable plate 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 embodiments 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 setting modes of the central magnet; the specific arrangement modes of the three center magnets are as follows: the polarities of adjacent ends of any two adjacent center magnets in the three center magnets are the same. Specifically, 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. In the embodiment shown in fig. 6 and 7, the second center magnet has the same polarity at both ends and the end polarity is the same as that of the adjacent center magnet.
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.
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 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 the embodiment of the present invention, the side magnetic circuit includes three side magnets 320 and two side magnetic conductive plates 340, and the three side magnets are disposed at intervals by the two side magnetic conductive plates, wherein the side magnetic conductive plates are disposed on the housing. Specifically, the side magnetic circuit includes from top to bottom in proper order: the first side magnet 321, the first side magnetic plate 341, the second side magnet 322, the second side magnetic plate 342 and the third side magnet 323, at least one of the first side magnetic plate 341 and the second side magnetic plate 342 is disposed on the housing, and in specific applications, the side magnetic plate can be injection molded on the housing and injection molded with the housing according to requirements.
In the embodiment of the invention, the double-hole vibrating diaphragm comprises an outer fixing part, three ring-folding 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 conduction front cover, the three ring-folding parts are all of inward concave structures and are respectively a first ring-folding part, a second ring-folding part and a third ring-folding part, and the middle part, wherein the first ring-folding part is connected with the shell through the outer fixing part, and the second ring-folding part and the third ring-folding part are respectively connected with the corresponding inner fixing part and the corresponding magnetic conduction 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.
The double-hole dome comprises a dome body portion and two avoidance spaces arranged in the central area of the dome body portion, wherein the dome body portion is arranged on the middle portion, 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 to first diplopore dome is taken as the example and is carried out the concrete explanation, first diplopore dome 13 includes first dome body portion, sets up the first space of dodging and the second space of dodging at first dome body portion, and first space of dodging is used for dodging first magnetic circuit assembly 30, and the second space 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, the vibration assembly further comprises two magnetic conduction front covers, the magnetic conduction front covers are fixed on the double-hole vibrating diaphragm, the magnetic conduction front covers are matched with the central area of the double-hole vibrating diaphragm, and the magnetic conduction front covers are symmetrically arranged on the upper side and the lower side of the magnetic circuit assembly respectively and respectively attached to the central magnets at the two ends of the three central magnets, namely: is respectively connected with the first center magnet and the third center magnet.
The first vibration assembly 10 includes a first magnetically conductive front cover 121 and a second magnetically conductive front cover 122, and are respectively disposed on the first dual-hole diaphragm 11, and the two magnetically conductive front covers are adapted to the hollowed 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, and 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 both adapted to the central hollow area of the second dual-hole diaphragm 21.
In addition, the first magnetic conductive front cover 121 and the third magnetic conductive front cover 221 are symmetrically disposed on the upper and lower sides of the first magnetic circuit assembly 30, 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 conductive front cover 122 and the fourth magnetic conductive front cover 222 are respectively and symmetrically arranged at the upper side and the lower side of the second magnetic circuit assembly 40, the second magnetic conductive front cover 122 is attached to the first center magnet of the second magnetic circuit assembly 40, and the fourth magnetic conductive front cover 222 is attached to the third center 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 a corresponding vibration assembly, and each of which is fixed to a corresponding magnetic circuit assembly.
In addition, in the embodiment of the invention, the vibration assembly further comprises a centering support piece, wherein the centering support piece is connected with the connecting framework and the shell, and the voice coil is connected with the shell through the corresponding connecting framework and the centering support piece. The connecting 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 on the double-hole dome, and the fixing parts are connected with the centering support pieces.
Specifically, the structure of each connecting skeleton is identical, each vibrating assembly comprises two connecting skeletons respectively, each connecting skeleton is provided with a fixing part at four corners, and the main body part and the fixing part are integrally formed. The fixing part comprises a connecting part connected with the main body part, a supporting part, 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 part, a bending part is arranged between the supporting part and the positioning part, and the supporting part is connected with the positioning part through the bending part. The positioning part is fixed on the double-hole dome, and the fixing part is fixed with the double-hole dome through the positioning part.
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 141 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 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 242 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.
In addition, as shown in fig. 9 and fig. 10, the electronic device further includes a housing and a double-sided sound generating device 100 disposed in the housing, where the double-sided sound generating device 100 employs the double-sided sound generating device, and the housing includes a top wall 220, a bottom wall 210, and a side wall, where the side wall is provided with a side sound outlet 250, two sets of vibration components of the double-sided sound generating device are respectively a first vibration component and a second vibration component, the first vibration component is connected with the top wall 220, and the second vibration component is connected with the bottom wall 210, where the first vibration component includes a first double-hole diaphragm, and a first side sound outlet 240 is formed between the first double-hole diaphragm and the side wall, or a positive sound outlet is formed between the first double-hole diaphragm and the top wall 220; the second vibration assembly includes a second dual-hole diaphragm, wherein a second side sound outlet channel 230 is formed among the second dual-hole diaphragm, the bottom wall 210, and the side wall, and the second side sound outlet channel 230 communicates with the side sound outlet 250.
In the embodiment shown in fig. 9, a first dual-hole diaphragm, the top wall 220, and the side wall form a first side sound outlet channel 240 therebetween, and the first side sound outlet channel 240 communicates with the side sound outlet 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 emitting channels of each sound emitting surface are side sound emitting channels, and the two side sound emitting channels are communicated with the same side sound emitting hole.
In the implementation shown in fig. 10, a positive sound outlet channel is formed between the first dual-hole diaphragm and the top wall, and a front sound outlet hole is arranged on the top wall at a position corresponding to the first dual-hole diaphragm, and the front sound outlet hole is communicated with the positive sound outlet channel. Namely: a front sound outlet is provided on the top wall at a position corresponding to the first double-hole diaphragm 11, which is a first sound outlet 261 and a second sound outlet 262 respectively. The sound outlet channel of one sound producing 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 producing surface is a positive sound outlet channel, and the positive sound outlet channel is communicated with the positive sound outlet hole.
In the embodiment shown in fig. 9 and 10, the electronic device 200 and the double-sided sound generating device 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 component, and a third magnetic conductive front cover 221 and a fourth magnetic conductive front cover 222 of the second vibration component 20, where the top wall 220 is attached to the first magnetic conductive front cover 121 and the second magnetic conductive front cover 122; the third and fourth magnetically permeable front covers 221 and 222 are attached to the bottom wall 210, or a cavity for accommodating other components is provided between the third and fourth magnetically permeable front covers 221 and 222 and the bottom wall 210. In a specific application, a suitable assembly form is selected according to actual requirements. In addition, in the embodiment of the invention, the stereo sound can be realized through different sound pipeline designs by adopting different sound pipeline design structures according to requirements.
In the embodiment of the invention, the heights of the first double-hole spherical top and the second annular spherical top are lower than the top surface of the central magnetic circuit in the magnetic circuit assembly, and the vibrating diaphragm can directly complete the sounding action through the front surface or the side surface of the sounding device by adopting 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 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 apparatus accomplish the action of making a sound, can make the size of whole device thinner under the prerequisite of guaranteeing the sound production radiation face, and then reduce the thickness of two-sided sound generating apparatus when using at electronic equipment.
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 (13)
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 dome arranged in the 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 dome 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 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 the two voice coils of each group of vibration assemblies and the double-hole ball top fixed with the two voice coils are driven by the two groups of magnetic circuit assemblies simultaneously.
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. The dual sided sound generating apparatus of claim 2,
The polarities of adjacent ends of any two adjacent center magnets in the three center magnets are the same.
4. The dual sided sound generating apparatus of claim 1,
The side magnetic circuit comprises three side magnets and two side magnetic conduction plates, and the three side magnets are arranged at intervals through the two side magnetic conduction plates, wherein the side magnetic conduction plates are arranged on the shell.
5. The double-sided sound generating apparatus according to claim 3,
Each vibration component further comprises two magnetic conduction front covers which are fixed on the double-hole vibrating diaphragm and are matched with the central hollowed-out area of the double-hole vibrating diaphragm, wherein,
The corresponding magnetic conduction front covers of each vibration assembly are symmetrically arranged on the upper side and the lower side of the corresponding magnetic circuit assembly respectively and are respectively attached to the center magnets positioned at the two ends of the three center magnets.
6. The dual sided sound generating apparatus of claim 5,
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 double-hole vibrating diaphragm comprises an outer fixing part, an inner fixing part, three ring folding parts and a middle part, wherein the outer fixing part is fixed with the shell, the inner fixing part is fixed with the magnetic conduction front cover, the three ring folding parts are all of inward concave structures and are respectively a first ring folding part, a second ring folding part and a third ring folding part, 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 magnetic conduction front cover;
the intermediate portion is disposed between the first and second and third annular portions, and between the second and third annular portions.
8. The double-sided sound generating apparatus according to claim 7,
The connecting framework comprises a main body part and a fixing part, wherein the two voice coils are respectively fixed on the main body parts of the corresponding connecting frameworks and are fixed with the double-hole dome through the fixing parts.
9. The dual sided sound generating apparatus of claim 8,
The vibration assembly further comprises a centering support piece, wherein the centering support piece is used for connecting the connecting framework with the shell, and the voice coil is connected with the shell through the corresponding connecting framework and the centering support piece.
10. An electronic device comprising a housing and a double-sided sound generating device disposed within the housing, wherein the double-sided sound generating device employs the double-sided sound generating device of any one of claims 1 to 9,
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 generating 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,
The first vibration component comprises a first double-hole vibrating diaphragm, wherein a first side sound outlet channel is formed among the first double-hole vibrating diaphragm, the top wall and the side wall, or a positive sound outlet channel is formed among the first double-hole vibrating diaphragm and the top wall;
the second vibration component comprises a second double-hole vibrating diaphragm, wherein a second side sound outlet channel is formed among the second double-hole vibrating diaphragm, the bottom wall and the side wall, and the second side sound outlet channel is communicated with the side sound outlet.
11. The electronic device of claim 10,
When a first side sound outlet channel is formed among the first double-hole vibrating 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 conduction front cover and a second magnetic conduction front cover, the second vibration component comprises a third magnetic conduction front cover and a fourth magnetic conduction front cover, wherein,
The first magnetic conduction front cover and the second magnetic conduction front cover are respectively attached to the top wall;
the third magnetic conduction front cover and the fourth magnetic conduction front cover are respectively attached to the bottom wall; or alternatively
And a cavity for accommodating other components is arranged among the third magnetic conduction front cover, the fourth magnetic conduction front cover and the bottom wall.
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| US20150110335A1 (en) * | 2013-10-10 | 2015-04-23 | Knowles Electronics, Llc | Integrated Speaker Assembly |
| CN209283487U (en) * | 2019-01-15 | 2019-08-20 | 歌尔科技有限公司 | Two-sided microphone device and electronic product |
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