CN113573217A - Speaker and electronic equipment - Google Patents
Speaker and electronic equipment Download PDFInfo
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- CN113573217A CN113573217A CN202010361145.XA CN202010361145A CN113573217A CN 113573217 A CN113573217 A CN 113573217A CN 202010361145 A CN202010361145 A CN 202010361145A CN 113573217 A CN113573217 A CN 113573217A
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- 239000004020 conductor Substances 0.000 claims description 35
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
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- 239000006260 foam Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000005192 partition Methods 0.000 description 3
- 238000012805 post-processing Methods 0.000 description 3
- 238000002360 preparation method Methods 0.000 description 3
- 229910000976 Electrical steel Inorganic materials 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 210000005069 ears Anatomy 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000005284 excitation Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 229920000742 Cotton Polymers 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 230000005389 magnetism Effects 0.000 description 1
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- 239000004984 smart glass Substances 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
- H04R9/06—Loudspeakers
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R3/00—Circuits for transducers, loudspeakers or microphones
- H04R3/02—Circuits for transducers, loudspeakers or microphones for preventing acoustic reaction, i.e. acoustic oscillatory feedback
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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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- Acoustics & Sound (AREA)
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- General Health & Medical Sciences (AREA)
- Otolaryngology (AREA)
- Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
Abstract
The invention discloses a loudspeaker and electronic equipment, in the disclosed loudspeaker: the first vibration assembly and the second vibration assembly are arranged on the same side of the support, the first vibration assembly surrounds the second vibration assembly, the first vibration assembly comprises a first voice coil, and the second vibration assembly comprises a second voice coil; the bracket is provided with an accommodating space, the first magnetic assembly and the second magnetic assembly are arranged in the accommodating space, and the first magnetic assembly at least partially surrounds the second magnetic assembly; a first annular magnetic gap is formed between the first magnetic assembly and the inner wall of the accommodating space, the first voice coil is at least partially positioned in the first annular magnetic gap, a second annular magnetic gap is formed between the first magnetic assembly and the second magnetic assembly, and the second voice coil is at least partially positioned in the second annular magnetic gap; the first vibration subassembly can send first ultrasonic wave, and the second vibration subassembly can send the second ultrasonic wave, and accessible difference frequency demodulation is the audible sound wave. The problem that loudspeaker distortion is serious can be solved to above-mentioned scheme.
Description
Technical Field
The invention relates to the technical field of communication equipment, in particular to a loudspeaker and electronic equipment.
Background
In the related art, an audio orientation technology is adopted to directionally deliver sound to a specified position without influencing the surrounding environment, and the audio orientation technology refers to the application of a nonlinear acoustic theory to realize the directional propagation of the sound. The difference frequency wave is demodulated in the air by utilizing the high directivity of the ultrasonic wave and the nonlinear demodulation function of the air, the generated difference frequency wave is audible by human ears, and the difference frequency wave has high directivity, so that the sound is transmitted to a designated area, and the sound cannot be heard by other areas.
The loudspeakers currently generally require the simultaneous generation of ultrasonic waves at two frequencies for demodulation into audible sound waves at the far end by means of a difference frequency. However, when the speaker emits ultrasonic waves of two frequencies at the same time, the diaphragm of the speaker needs to vibrate simultaneously to generate ultrasonic waves of two frequencies, which causes the ultrasonic waves of two frequencies to generate obvious intermodulation distortion, and causes the distortion of the speaker to be serious.
Disclosure of Invention
The invention discloses a loudspeaker and electronic equipment, which can solve the problem of serious loudspeaker distortion.
In order to solve the technical problem, the invention is realized as follows:
in a first aspect, an embodiment of the present invention discloses a speaker, which includes a support, a first magnetic component, a second magnetic component, a first vibration component, and a second vibration component, where the first vibration component and the second vibration component are both disposed on the same side of the support, and the first vibration component surrounds the second vibration component, the first vibration component includes a first voice coil, and the second vibration component includes a second voice coil;
the bracket is provided with an accommodating space, the first magnetic assembly and the second magnetic assembly are arranged in the accommodating space, and the first magnetic assembly at least partially surrounds the second magnetic assembly;
a first annular magnetic gap is formed between the first magnetic assembly and the inner wall of the accommodating space, the first voice coil is at least partially positioned in the first annular magnetic gap, a second annular magnetic gap is formed between the first magnetic assembly and the second magnetic assembly, and the second voice coil is at least partially positioned in the second annular magnetic gap;
the first vibration subassembly can send first ultrasonic wave, the second vibration subassembly can send the second ultrasonic wave, the frequency of first ultrasonic wave with the frequency inequality of second ultrasonic wave, and accessible difference frequency demodulation is the audible sound wave.
In a second aspect, an embodiment of the present invention discloses an electronic device, which includes a device body and the speaker, wherein the device body is provided with an inner cavity and a sound outlet hole, the sound outlet hole is communicated with the inner cavity, and the speaker is disposed in the inner cavity.
The technical scheme adopted by the invention can achieve the following beneficial effects:
in the loudspeaker disclosed by the embodiment of the invention, the first vibration component and the second vibration component can vibrate and sound independently, the two vibration components respectively generate two beams of ultrasonic waves, each vibration component works independently and respectively generates one beam of ultrasonic wave, and the phenomenon that the same vibration component needs to vibrate simultaneously to generate two beams of ultrasonic waves is avoided, so that the loudspeaker is prevented from generating obvious intermodulation distortion when the loudspeaker emits two beams of ultrasonic waves, and the distortion problem of the loudspeaker can be further relieved.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments or the background art of the present invention, the drawings used in the description of the embodiments or the background art will be briefly described below, and it is obvious for those skilled in the art to obtain other drawings without any inventive exercise.
Fig. 1 is a schematic diagram of a speaker according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a speaker according to another embodiment of the present disclosure;
FIG. 3 is a schematic view of FIGS. 1 and 2 from another perspective;
FIG. 4 is a schematic diagram of a speaker according to still another embodiment of the present disclosure;
FIG. 5 is a schematic view of FIG. 4 from another perspective;
fig. 6 is a schematic diagram of an electronic device according to an embodiment of the disclosure.
Description of reference numerals:
100-rack, 110-receiving space, 111-first receiving subspace, 112-second receiving subspace, 120-spacer;
200-a first magnetic component, 210-a fourth magnetic part, 220-a fourth magnetic conducting part, 230-a mounting groove, 240-a first magnetic part, 250-a first magnetic conducting part, 260-a second magnetic part, 270-a ring magnetic conducting part and 280-a second magnetic conducting body;
300-a second magnetic component, 310-a fifth magnetic part, 320-a fifth magnetic conduction part, 330-a third magnetic part and 340-a third magnetic conduction part;
400-a first vibration assembly, 410-a first voice coil, 420-a first diaphragm, 430-a first dome;
500-a second vibration assembly, 510-a second voice coil, 520-a second diaphragm, 530-a second dome;
610-a first annular magnetic gap, 620-a second annular magnetic gap;
710-a first non-magnetic conducting support, 720-a second non-magnetic conducting support;
800-equipment body, 810-inner cavity, 811-front cavity, 812-rear cavity and 820-sound outlet hole;
900-foam cotton.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be clearly and completely described below with reference to the specific embodiments of the present invention and the accompanying drawings. It is to be understood that the described embodiments are merely a few embodiments of the invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The technical solutions disclosed in the embodiments of the present invention are described in detail below with reference to the accompanying drawings.
Referring to fig. 1 to 3, a speaker according to an embodiment of the present invention includes a bracket 100, a first magnetic assembly 200, a second magnetic assembly 300, a first vibration assembly 400, and a second vibration assembly 500.
Wherein the bracket 100 is a base member of the speaker, and the bracket 100 can provide a mounting base for other components of the speaker. In the embodiment of the present invention, the bracket 100 has a receiving space 110.
The first vibration assembly 400 and the second vibration assembly 500 are both disposed on the same side of the bracket 100, the first vibration assembly 400 surrounds the second vibration assembly 500, the first vibration assembly 400 includes a first voice coil 410, the second vibration assembly 500 includes a second voice coil 510, and the first vibration assembly 400 and the second vibration assembly 500 are sound generating components of a speaker.
The first magnetic element 200 and the second magnetic element 300 are disposed in the accommodating space 110, the first magnetic element 200 at least partially surrounds the second magnetic element 300, a first annular magnetic gap 610 is formed between the first magnetic element 200 and the inner wall of the accommodating space 110, the first voice coil 410 is at least partially disposed in the first annular magnetic gap 610, a second annular magnetic gap 620 is formed between the first magnetic element 200 and the second magnetic element 300, and the second voice coil 510 is at least partially disposed in the second annular magnetic gap 620. The first annular magnetic gap 610 and the second annular magnetic gap 620 each have magnetic field lines therein, that is, the first annular magnetic gap 610 and the second annular magnetic gap 620 are both located in a magnetic field.
Specifically, under the condition that the first voice coil 410 and the second voice coil 510 are powered on, because the power-on wires are acted by an ampere force in a magnetic field, the first voice coil 410 and the second voice coil 510 are acted by the ampere force to generate displacement, and the displacement amplitude and the displacement direction of the first voice coil 410 and the second voice coil 510 can be controlled by adjusting the magnitude and the direction of current on the first voice coil 410 and the second voice coil 510, so that the first vibration component 400 and the second vibration component 500 generate sound waves through vibration, the first vibration component 400 can generate first ultrasonic waves, the second vibration component 500 can generate second ultrasonic waves, the frequency of the first ultrasonic waves is different from that of the second ultrasonic waves, and the first ultrasonic waves and the second ultrasonic waves can be demodulated into audible sound waves through nonlinearity of air when being transmitted in the air, and the audible sound waves can be recognized by human ears. Non-linear demodulation of air includes difference frequency demodulation.
In the embodiment of the invention, the loudspeaker can emit two ultrasonic waves, the two ultrasonic waves can be directionally propagated in the air by utilizing the high directivity of the ultrasonic waves, and the two ultrasonic waves are modulated into a plurality of sound waves by utilizing the nonlinear modulation effect of the air, wherein the frequency of the two ultrasonic waves emitted by the loudspeaker is reasonably selected so that the difference frequency sound wave of the two ultrasonic waves is audible, for example, the loudspeaker emits two ultrasonic waves with the frequencies of f1 and f2 and is influenced by the nonlinear interaction of the air, the two ultrasonic waves with the frequencies of f1 and f2 are modulated into a plurality of sound waves of f1, f2, f1+ f2, f1-f2, 2f1, 2f2 and the like, wherein f1-f2 are the difference frequency sound waves. The frequencies of f1 and f2 are reasonably selected, so that f1-f2 can be audible sound waves, for example, f1 is 41kHz, f2 is 40kHz, f1-f2 is 1kHz, sound waves with the frequency of 1kHz belong to the audible sound waves, and the difference frequency sound waves obtained by the nonlinear demodulation of the two ultrasonic waves in air still have high directivity, so that the difference frequency sound waves can directionally propagate in the air, and further the sound can directionally propagate. The principle of the directional propagation of the ultrasonic wave is known in the art, and is not described herein for brevity.
During a particular operation, when the user needs a private conversation or to avoid affecting the surrounding environment, the user can control the first voice coil 410 and the second voice coil 510 to respectively switch on the electric signals by means of manipulating a button or voice control, under the combined action of the magnetic field in the first annular magnetic gap 610 and the electrical signal on the first voice coil 410, the first vibration assembly 400 emits the first ultrasonic wave by vibration, under the combined action of the magnetic field in the second annular magnetic gap 620 and the electrical signal on the second voice coil 510, the second vibration assembly 500 emits a second ultrasonic wave by vibration, the two ultrasonic waves are demodulated into audible sound waves in the air and directionally spread to a receiving object, so that the sound emitted by the loudspeaker is not spread to the surrounding environment, the influence on the surrounding environment or the hearing of other people is avoided, so that the conversation privacy of the user is improved, and the privacy of the user is protected.
In the loudspeaker disclosed by the embodiment of the invention, the first vibration component 400 and the second vibration component 500 can vibrate and sound independently, the two vibration components respectively generate two beams of ultrasonic waves, each vibration component works independently and respectively generates one beam of ultrasonic wave, and the situation that the same vibration component needs to vibrate simultaneously to generate two beams of ultrasonic waves is avoided, so that the loudspeaker is prevented from generating obvious intermodulation distortion when the loudspeaker emits two beams of ultrasonic waves, and the distortion problem of the loudspeaker can be further relieved.
Meanwhile, the resonant frequencies of the first vibration assembly 400 and the second vibration assembly 500 may be different, so that the resonant frequency of the first vibration assembly 400 is closer to the frequency of the first ultrasonic wave, the resonant frequency of the second vibration assembly 500 is closer to the frequency of the second ultrasonic wave, an excitation electrical signal that is the same as or close to the resonant frequency of the first vibration assembly 400 is applied to the first voice coil 410, and an excitation electrical signal that is the same as or close to the resonant frequency of the second vibration assembly 500 is applied to the second voice coil 510, so that the first vibration assembly 400 emits the first ultrasonic wave at the resonant frequency position where the electroacoustic conversion efficiency is the highest, the second vibration assembly 500 emits the second ultrasonic wave at the resonant frequency position where the electroacoustic conversion efficiency is the highest, and thus the energy efficiency of the speaker is large.
As described above, the first magnetic assembly 200 at least partially surrounds the second magnetic assembly 300, specifically, the first magnetic assembly 200 may have the mounting groove 230, the second magnetic assembly 300 is disposed in the mounting groove 230, the side wall of the mounting groove 230 surrounds the second magnetic assembly 300, and the second annular magnetic gap 620 is formed between the second magnetic assembly 300 and the side wall of the mounting groove 230, such a surrounding manner is simple, and is easy to operate, thereby facilitating the installation of the speaker, simplifying the structure of the speaker, and reducing the design difficulty of designers.
In an alternative embodiment, the first magnetic assembly 200 may include a first magnetic member 240 and a first magnetic conductor 250, the first magnetic conductor 250 is disposed on one side of the first magnetic member 240 and disposed opposite to the first vibration assembly 400, the first magnetic conductor 250 may have an installation groove 230, and since the cost of the magnetic conductor is generally lower than that of the magnetic member, in this embodiment, under the condition that a first annular magnetic gap 610 is formed between the first magnetic assembly 200 and the inner wall of the accommodating space 110 and a second annular magnetic gap 620 is formed between the first magnetic assembly 200 and the second magnetic assembly 300, the first magnetic conductor 250 is used to replace a portion of the first magnetic member 240, so that the size of the first magnetic member 240 can be made smaller, and the cost can be reduced, and a first annular magnetic gap 610 with a stronger magnetic field can be formed between the first magnetic conductor 250 and the inner wall of the accommodating space 110, the first magnetizer 250 and the second magnetic assembly 300 form a second annular magnetic gap 620 with a stronger magnetic field, so that the normal work of the loudspeaker is prevented from being influenced. The first magnetic conductor 250 may be of various types, such as an iron member and a silicon steel sheet, and the type of the first magnetic conductor 250 is not limited in the embodiment of the present invention.
In another alternative embodiment, the first magnetic assembly 200 may include a second magnetic member 260 and a ring-shaped magnetic conductor 270, the ring-shaped magnetic conductor 270 is disposed on one side of the second magnetic member 260 and disposed opposite to the first vibration assembly 400, the ring-shaped magnetic conductor 270 and the second magnetic member 260 can form the mounting groove 230, the second magnetic assembly 300 is disposed in the ring-shaped magnetic conductor 270, and the ring-shaped magnetic conductor 270 is disposed around the second magnetic assembly 300. In this embodiment, the annular magnetizer 270 and the second magnetic member 260 can directly form the mounting groove 230, and the mounting groove 230 is not formed in the first magnetic assembly 200 in a post-processing manner, so that the increase of the preparation process of the first magnetic assembly 200 is avoided, the first magnetic assembly 200 is prevented from being prepared longer, the preparation flow of the first magnetic assembly 200 is simplified, and the preparation difficulty of the first magnetic assembly 200 is reduced.
To enhance the strength of the magnetic field in the first annular magnetic gap 610 and the second annular magnetic gap 620, in an alternative embodiment, a second magnetizer 280 may be disposed between the second magnetic assembly 300 and the second magnetic member 260, and an edge of the second magnetizer 280 is connected to the annular magnetizer 270. Referring to fig. 1 again, the second magnetic conductor 280 can increase the magnetic loops of the annular magnetic conductor 270, so that the magnetic loops around the annular magnetic conductor 270 are denser, thereby enhancing the strength of the magnetic field in the first annular magnetic gap 610 and the second annular magnetic gap 620, and when the first voice coil 410 and the second voice coil 510 are energized, the ampere force applied to the first voice coil 410 in the first annular magnetic gap 610 with a stronger magnetic field is larger, and the ampere force applied to the second voice coil 510 in the second annular magnetic gap 620 with a stronger magnetic field is also larger, thereby enabling the first vibration assembly 400 and the second vibration assembly 500 to vibrate more strongly. Meanwhile, when the first vibration assembly 400 and the second vibration assembly 500 vibrate at the same amplitude, the current in the first voice coil 410 and the second voice coil 510 may be smaller, so that the power consumption of the speaker is smaller.
In order to further reduce the cost of the speaker, in an alternative embodiment, the second magnetic assembly 300 may include a third magnetic member 330 and a third magnetic conductor 340, and the third magnetic conductor 340 is disposed on a side of the third magnetic member 330 facing away from the bottom of the mounting groove 230. Because the cost of the magnetic conductive member is usually lower than that of the magnetic member, in this embodiment, under the condition that the second annular magnetic gap 620 is formed between the first magnetic assembly 200 and the second magnetic assembly 300, the third magnetic conductive member 340 is used to replace a part of the third magnetic member 330, so that the size of the third magnetic member 330 is smaller, and thus the cost of the speaker can be reduced, and the second annular magnetic gap 620 with a stronger magnetic field is formed between the third magnetic conductive member 340 and the second magnetic assembly 300, thereby avoiding affecting the normal operation of the speaker. The type of the third magnetic conductor 340 may be various, such as an iron piece, a silicon steel sheet, and the like, and the type of the third magnetic conductor 340 is not limited in the embodiment of the present invention.
To further enhance the strength of the magnetic field in the first annular magnetic gap 610 and the second annular magnetic gap 620, in an alternative embodiment, the ends of the first magnetic element 200 contacting the second magnetic element 300 may have the same polarity, and this arrangement enables more magnetic induction lines between the first magnetic element 200 and the second magnetic element 300 to pass through the first annular magnetic gap 610 and the second annular magnetic gap 620, so that the magnetic induction density in the first annular magnetic gap 610 and the second annular magnetic gap 620 is higher, and the magnetic field in the first annular magnetic gap 610 and the second annular magnetic gap 620 is stronger,
still further, the stent 100 may be a magnetically conductive stent. The magnetic conductive bracket has magnetism under the action of the first magnetic assembly 200, so that a first annular magnetic gap 610 with high magnetic induction density can be formed between the magnetic conductive bracket and the first magnetic assembly 200, and the magnetic induction density in the first annular magnetic gap 610 can be further improved.
In the embodiment of the present invention, the first vibration component 400 and the second vibration component 500 are sound generating components of a speaker, and the first vibration component 400 can emit a first ultrasonic wave, and the second vibration component 500 can emit a second ultrasonic wave, specifically, the first vibration component 400 can further include a first diaphragm 420 and a first dome 430, the first voice coil 410 is connected to the first dome 430, the first diaphragm 420 is connected to the first dome 430, and the first diaphragm 420 is connected to the support 100; the second vibration assembly 500 may further include a second diaphragm 520 and a second dome 530, the second voice coil 510 is connected to the second dome 530, the first dome 430 and the second dome 530 are connected by the second diaphragm 520, such that the first vibration assembly 400 surrounds the second vibration assembly 500, and the second diaphragm 520 is connected to the first magnetic assembly 200. The first vibration assembly 400 and the second vibration assembly 500 of the structure are simple in structure and convenient to set, and the sound production effect of the first vibration assembly 400 and the second vibration assembly 500 is good.
Specifically, the adjustment of the resonant frequencies of the first vibration assembly 400 and the second vibration assembly 500 may be achieved by adjusting the materials and shapes of the first diaphragm 420 and the second diaphragm 520, the weights of the first dome 430 and the second dome 530, and the weights of the first voice coil 410 and the second voice coil 510. Meanwhile, since the speaker needs to emit ultrasonic waves, the material hardness of the first diaphragm 420 and the second diaphragm 520 is required to be high, and the weight of the first dome 430 and the second dome 530 and the weight of the first voice coil 410 and the second voice coil 510 are required to be light.
In the case that the bracket 100 is a magnetic conductive bracket, the first diaphragm 420 connected to the bracket 100 and the second diaphragm 520 connected to the first magnetic assembly 200 are influenced by magnetic force, so that the first vibration assembly 400 and the second vibration assembly 500 are difficult to vibrate optimally, and sound distortion generated by the first vibration assembly 400 and the second vibration assembly 500 may be caused. In view of this, in an alternative embodiment, the speaker may further include a first non-magnetic support member 710 and a second non-magnetic support member 720, the first diaphragm 420 being connected to the stand 100 through the first non-magnetic support member 710, and the second diaphragm 520 being connected to the first magnetic assembly 200 through the second non-magnetic support member 720. Under the condition that the bracket 100 is a magnetic-conductive bracket, the first non-magnetic-conductive supporting member 710 can prevent the first diaphragm 420 from being influenced by the magnetic force of the bracket 100, and meanwhile, the second non-magnetic-conductive supporting member 720 can prevent the second diaphragm 520 from being influenced by the magnetic force of the first magnetic assembly 200, so that the first vibration assembly 400 and the second vibration assembly 500 can be independent and are not influenced by the magnetic force of the bracket 100 or the first magnetic assembly 200 when vibrating, and therefore, the vibration effect of the first vibration assembly 400 and the second vibration assembly 500 is better, and the sound distortion sent by the first vibration assembly 400 and the second vibration assembly 500 is prevented.
In an embodiment of the present invention, the first magnetic element 200 at least partially surrounds the second magnetic element 300, a first annular magnetic gap 610 is formed between the first magnetic element 200 and the inner wall of the accommodating space 110, and a second annular magnetic gap 620 is formed between the first magnetic element 200 and the second magnetic element 300, but the present invention is not limited to this manner, and optionally, referring to fig. 4 and 5, a partition 120 may be disposed in the accommodating space 110, and the partition 120 partitions the accommodating space 110 into a first accommodating sub-space 111 and a second accommodating sub-space 112, the first magnetic element 200 is disposed in the first accommodating sub-space 111, and forms a first annular magnetic gap 610 with the inner wall of the first accommodating sub-space 111, and the second magnetic element 300 is disposed in the second accommodating sub-space 112, and forms a second annular magnetic gap 620 with the inner wall of the second accommodating sub-space 112. In the speaker of this kind of structure, first vibration subassembly 400 and second vibration subassembly 500 can the mutually independent vibration sound production, and two vibration subassemblies produce two bundles of ultrasonic waves respectively, and every vibration subassembly autonomous working, and produce a branch of ultrasonic wave respectively, avoid same vibration subassembly to need vibrate simultaneously and produce two bundles of ultrasonic waves to prevent that the speaker from producing obvious intermodulation distortion when sending two bundles of ultrasonic waves.
Specifically, the first magnetic assembly 200 may include a fourth magnetic member 210 and a fourth magnetic conductor 220, the fourth magnetic conductor 220 is disposed on one side of the fourth magnetic member 210 and is opposite to the first vibration assembly 400, the second magnetic assembly 300 may include a fifth magnetic member 310 and a fifth magnetic conductor 320, and the fifth magnetic conductor 320 is disposed on one side of the fifth magnetic member 310 and is opposite to the second vibration assembly 500. The fourth magnetic member 210 and the fifth magnetic member 310 can be made smaller in size by using a magnetizer instead of the magnetic member, so that the cost of the speaker can be reduced.
Referring to fig. 6, based on the speaker disclosed in the embodiment of the present invention, the embodiment of the present invention further discloses an electronic device, the disclosed electronic device includes a device body 800 and the speaker described in any of the embodiments above, the device body 800 is provided with an inner cavity 810 and a sound outlet 820, the sound outlet 820 is communicated with the inner cavity 810, and the speaker is disposed in the inner cavity 810. In the electronic device disclosed in the embodiment of the present invention, the ultrasonic wave emitted from the speaker can be transmitted to the outside of the electronic device through the sound emitting hole 820, so that the sound of the electronic device can be transmitted in a directional manner. And can be through adjusting the orientation of going out sound hole 820 to make the sound of electronic equipment can the directional propagation to answering the object, so that the sound that makes electronic equipment send just can the directional propagation to answering the position that the object was located, and this sound can not propagate to the surrounding environment in, avoids influencing the surrounding environment or is heard by other people, thereby improves the privacy of user's conversation, protects user's privacy.
It should be noted that the listening object may be a user of the electronic device, or may be a receiving object of a sound designated by the user of the electronic device, for example, the user of the electronic device shares the sound with other people.
Further, the speaker may divide the inner cavity 810 into a front cavity 811 and a rear cavity 812 which are isolated from each other, the sound outlet hole 820 is communicated with the front cavity 811, and the speaker emits sound towards the front cavity 811, and the rear cavity 812 can make the bass performance of the electronic device better.
In an alternative embodiment, the sidewall of the inner cavity 810 may be formed with a mounting groove, the speaker may be formed in the mounting groove, and the speaker is connected to the sidewall of the mounting groove through the foam 900. The setting mode is simple and convenient to set. Meanwhile, when the electronic equipment is impacted or vibrates, the foam 900 can buffer the loudspeaker, so that the loudspeaker is prevented from being damaged due to the impact or vibration of the electronic equipment, and the reliability of the electronic equipment is further improved.
The sound outlet 820 may be formed by post-processing on the electronic device, but this may damage the integrity of the electronic device, resulting in poor appearance of the electronic device. Alternatively, the device body 800 may include a first functional component and a second functional component, the first functional component is mounted on the second functional component, and an assembly gap is formed between the first functional component and the second functional component, and the assembly gap forms the sound outlet 820. The assembly gap is usually formed in the process of assembling the electronic equipment, the assembly gap is utilized to replace the sound outlet 820 formed in the electronic equipment in a post-processing mode, so that holes can be prevented from being formed in the electronic equipment, the integrity of the electronic equipment cannot be damaged in the mode, the appearance attractiveness of the electronic equipment is higher, and the user experience feeling is better.
Specifically, in the case that the electronic device is a mobile phone, the first functional component may be a housing, the second functional component may be a battery cover, the second functional component may also be a key, and an assembly gap is usually formed between the key and the housing.
Further, the number of sound holes 820 can be a plurality of, and a plurality of sound holes 820 all are linked together with inner chamber 810, and a plurality of sound holes 820 can make more ultrasonic wave propagate to the electronic equipment outside to make electronic equipment's sound production effect better, and then improve electronic equipment's user experience.
The electronic device disclosed in the embodiment of the present invention may be a smart phone, a tablet computer, an electronic book reader, smart glasses (e.g., a smart watch), an electronic game machine, or the like, and the specific type of the electronic device is not limited in the embodiment of the present invention.
In the above embodiments of the present invention, the difference between the embodiments is mainly described, and different optimization features between the embodiments can be combined to form a better embodiment as long as they are not contradictory, and further description is omitted here in view of brevity of the text.
The above description is only an example of the present invention, and is not intended to limit the present invention. Various modifications and alterations to this invention will become apparent to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.
Claims (11)
1. A loudspeaker is characterized by comprising a support, a first magnetic assembly, a second magnetic assembly, a first vibration assembly and a second vibration assembly, wherein the first vibration assembly and the second vibration assembly are arranged on the same side of the support, the first vibration assembly surrounds the second vibration assembly, the first vibration assembly comprises a first voice coil, and the second vibration assembly comprises a second voice coil;
the bracket is provided with an accommodating space, the first magnetic assembly and the second magnetic assembly are arranged in the accommodating space, and the first magnetic assembly at least partially surrounds the second magnetic assembly;
a first annular magnetic gap is formed between the first magnetic assembly and the inner wall of the accommodating space, the first voice coil is at least partially positioned in the first annular magnetic gap, a second annular magnetic gap is formed between the first magnetic assembly and the second magnetic assembly, and the second voice coil is at least partially positioned in the second annular magnetic gap;
the first vibration subassembly can send first ultrasonic wave, the second vibration subassembly can send the second ultrasonic wave, the frequency of first ultrasonic wave with the frequency inequality of second ultrasonic wave, and accessible difference frequency demodulation is the audible sound wave.
2. The loudspeaker of claim 1, wherein the first magnetic assembly defines a mounting groove, the second magnetic assembly is disposed in the mounting groove, a sidewall of the mounting groove surrounds the second magnetic assembly, and the second magnetic assembly and the sidewall of the mounting groove form the second annular magnetic gap therebetween.
3. The loudspeaker of claim 2, wherein the first magnetic assembly comprises a first magnetic member and a first magnetic conductor, the first magnetic conductor is disposed on one side of the first magnetic member and opposite to the first vibration assembly, and the mounting groove is formed in the first magnetic conductor.
4. The loudspeaker of claim 2, wherein the first magnetic assembly comprises a second magnetic member and a ring-shaped magnetic conductor disposed on a side of the second magnetic member opposite the first vibration assembly, the ring-shaped magnetic conductor and the second magnetic member forming the mounting slot, the second magnetic assembly being disposed within the ring-shaped magnetic conductor, and the ring-shaped magnetic conductor being disposed around the second magnetic assembly.
5. The loudspeaker of claim 4, wherein a second magnetic conductor is disposed between the second magnetic assembly and the second magnetic member, and an edge of the second magnetic conductor is connected to the annular magnetic conductor.
6. The loudspeaker of claim 2, wherein the second magnetic assembly includes a third magnetic member and a third magnetic conductor, the third magnetic member being disposed on a side of the third magnetic member facing away from the bottom of the mounting slot.
7. The loudspeaker of claim 2, wherein the ends of the first magnetic component in contact with the second magnetic component are of the same polarity.
8. The loudspeaker of claim 1, wherein the support is a magnetically conductive support.
9. The loudspeaker of claim 1, wherein the first vibration assembly further comprises a first diaphragm and a first dome, the first voice coil being coupled to the first dome, the first diaphragm being coupled to the first dome, and the first diaphragm being coupled to the frame;
the second vibration component further comprises a second vibrating diaphragm and a second ball top, the second voice coil is connected with the second ball top, the first ball top is connected with the second ball top through the second vibrating diaphragm, and the second vibrating diaphragm is connected with the first magnetic component.
10. The loudspeaker of claim 9, further comprising a first non-magnetic support member and a second non-magnetic support member, wherein the first diaphragm is coupled to the frame via the first non-magnetic support member, and wherein the second diaphragm is coupled to the first magnetic assembly via the second non-magnetic support member.
11. An electronic device, comprising a device body and the speaker of any one of claims 1 to 10, wherein the device body defines an inner cavity and a sound outlet, the sound outlet is communicated with the inner cavity, and the speaker is disposed in the inner cavity.
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| CN202010361145.XA CN113573217B (en) | 2020-04-29 | 2020-04-29 | Speaker and electronic equipment |
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| CN202010361145.XA CN113573217B (en) | 2020-04-29 | 2020-04-29 | Speaker and electronic equipment |
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| CN113573217B CN113573217B (en) | 2024-03-05 |
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| CN117560607A (en) * | 2023-12-29 | 2024-02-13 | 汉得利（常州）电子股份有限公司 | Ultrasonic loudspeaker |
| WO2024044923A1 (en) * | 2022-08-30 | 2024-03-07 | 瑞声光电科技(常州)有限公司 | Coaxial loudspeaker |
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| CN113573217B (en) | 2024-03-05 |
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