CN106303858B - A kind of loudspeaker and terminal device - Google Patents
A kind of loudspeaker and terminal device Download PDFInfo
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- CN106303858B CN106303858B CN201610817162.3A CN201610817162A CN106303858B CN 106303858 B CN106303858 B CN 106303858B CN 201610817162 A CN201610817162 A CN 201610817162A CN 106303858 B CN106303858 B CN 106303858B
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- magnetic
- diaphragm
- electromagnet
- loudspeaker
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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
-
- 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
- H04R2400/00—Loudspeakers
- H04R2400/11—Aspects regarding the frame of loudspeaker transducers
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- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
Abstract
The present invention relates to a kind of loudspeaker and terminal devices, comprising: shell, electromagnet, magnetic diaphragm and elastic slice, in which: the shell is provided with cavity；The electromagnet includes winding body and conductive coil, and the winding body is fixed in the cavity, and the conductive coil is wound on the winding body；On the housing, the magnetic diaphragm is vertical with the magnetic direction that the electromagnet generates, and setting is spaced between the magnetic diaphragm and the electromagnet for the magnetic diaphragm fixed setting；The elastic slice is fixed at the outside of the shell, and the elastic slice is electrically connected with the both ends of the conductive coil respectively.Loudspeaker disclosed by the invention is broken after solving the problems, such as the end of a thread at conductive coil both ends because being frequently bended the metal fatigue for moving back and forth and causing in the end of a thread.
Description
Technical field
The present invention relates to electroacoustic switch technology field more particularly to a kind of loudspeakers and terminal device.
Background technique
Loudspeaker is the switching device for converting the electrical signal to acoustical signal, as common electro-acoustic transducing device, is answered
In the various electronic electric equipments for needing sounding, for example, computer, mobile phone etc..Loudspeaker be divided into moving-coil type, condenser type,
Reed and crystal formula etc. are several, and wherein coil-moving speaker use is most extensive.
As shown in Figure 1, coil-moving speaker mainly include permanent magnet constitute magnetic cylinder 1, voice coil 2, vibrating diaphragm 3, magnetic column 4 with
And elastic slice 5.Wherein, magnetic column 4 is arranged in magnetic cylinder 1, and there are gap between 1 edge of magnetic column 4 and magnetic cylinder, formation has
The magnetic gap of magnetic field strength；Voice coil 2 is formed by enameled wire coiling, and one end 21 of voice coil is set on magnetic column 4, be located at magnetic cylinder 1 with
In magnetic gap between magnetic column 4, the other end 22 and the vibrating diaphragm 3 of voice coil are fixed together by viscose glue, and the both ends 23 of enameled wire are divided
It is not electrically connected with elastic slice 5.When tone currents is passed through voice coil 2 by elastic slice 5, the voice coil 2 of energization magnetic cylinder 1 and magnetic column 4 it
Between pumped in magnetic gap under the action of magnetic field force, drive vibrating diaphragm 3 to vibrate when voice coil 2 moves back and forth, and vibrating diaphragm 3 is vibrated
Air around compressing or stretching in journey forms resonance, so that loudspeaker be made to make a sound.
But during voice coil 2 constantly pumps, voice coil 2 drives the end of a thread at enameled wire both ends frequent
Bending moves back and forth, and leads to the metal fatigue and fracture in two rear line head of enameled wire, to cause speaker fail.In addition,
When big volume work, since driving current is larger, the motion amplitude of vibrating diaphragm 3 is also larger, meanwhile, impedance existing for voice coil 2 itself
Voice coil 2 is set to generate heat, voice coil 2 causes the fixing intensity of glue to decline after generating heat, and so that vibrating diaphragm 3 is scattered with voice coil 2, so as to cause loudspeaker
There is noise even to damage.
Summary of the invention
To overcome the problems in correlation technique, the present invention provides a kind of loudspeaker and terminal device, existing to solve
Skill
Metal fatigue and fracture in art in two rear line head of conductive coil, meanwhile, the problem of voice coil and vibrating diaphragm scatter.
In a first aspect, the embodiment of the invention provides a kind of loudspeakers, comprising: shell, electromagnet, magnetic diaphragm and bullet
Piece, in which:
The shell is provided with cavity；
The electromagnet includes winding body and conductive coil, and the winding body is fixed in the cavity, described to lead
Electric coil is wound on the winding body；
The magnetic diaphragm is fixedly installed on the housing, the magnetic field side that the magnetic diaphragm and the electromagnet generate
To vertical, and setting is spaced between the magnetic diaphragm and the electromagnet；
The elastic slice is fixed at the outside of the shell, and elastic slice both ends with the conductive coil respectively
Electrical connection.
With reference to first aspect, in the first possible implementation of the first aspect, the magnetic diaphragm includes elasticity
Vibrating diaphragm and ferromagnet；
The central area of the elastic vibrating diaphragm is arranged in the ferromagnet.
With reference to first aspect, in the second possible implementation of the first aspect, the magnetic diaphragm includes two
Elastic vibrating diaphragm and the ferromagnet being arranged between two elastic vibrating diaphragms, in the ferromagnet and described two elastic vibrating diaphragms
At least one elastic vibrating diaphragm is fixedly connected, the periphery sealing of described two elasticity vibrating diaphragms.
With reference to first aspect, in a third possible implementation of the first aspect, the magnetic diaphragm includes elasticity
Vibrating diaphragm and multiple ferromagnetic sheets or ferromagnetic block；
The multiple ferromagnetic sheet or ferromagnetic block arrange to form ferromagnetic array on the surface of the elastic vibrating diaphragm, the ferromagnetic battle array
The shape of column is symmetric figure.
The possible implementation of second with reference to first aspect, in first aspect the 5th in possible implementation,
The loudspeaker includes multiple electromagnet, wherein the conductive coil of multiple electromagnet is connected in series, the magnetic vibration
Ferromagnet corresponding with the multiple electromagnet is respectively set on film.
With reference to first aspect, in the sixth possible implementation of the first aspect, the winding body be reel or
Wrapping post, and the winding body is the winding body of diamagnetism material production.
With reference to first aspect, in a seventh possible implementation of the first aspect, the loudspeaker further includes magnetic core；
Along the axis direction of the winding body, cavity is provided in the middle part of the winding body；
The magnetic core is arranged in the cavity in the middle part of the winding body.
The possible implementation of second with reference to first aspect, in the 8th kind of possible implementation of first aspect,
The elastic one side of the vibrating diaphragm far from the electromagnet is arranged in the ferromagnet.
With reference to first aspect second, the third or the 4th kind of possible implementation, at the 9th kind of first aspect
In possible implementation, the elasticity vibrating diaphragm is set as paper base vibrating diaphragm, high molecular material vibrating diaphragm or composite diaphragm.
Second aspect, the embodiment of the invention provides a kind of mobile terminals, including audio component；
The audio component includes voicefrequency circuit and loudspeaker as claimed in claims 1-9, wherein the audio-frequency electric
Electric signal after the audio data conversion that road is used to receive, is transferred to the loudspeaker；
The electric signal received is converted to voice signal output by the loudspeaker.
The technical solution that the embodiment of the present invention provides can include the following benefits:
Loudspeaker provided in an embodiment of the present invention includes: including elastic slice, shell, electromagnet and magnetic diaphragm, in which: described
Shell is set as cavity structure, and the electromagnet includes winding body and conductive coil, wherein the winding body is fixed at institute
It states in the cavity of shell, the conductive coil is wound on the winding body；The magnetic diaphragm is fixed at the shell
On, the magnetic diaphragm is vertical with the magnetic direction that the electromagnet generates, and between the magnetic diaphragm and the electromagnet
Interval setting；The elastic slice is fixed at outside the shell, and both ends of the elastic slice respectively with the conductive coil are electrically connected
It connects.
Seen from the above description, loudspeaker provided in an embodiment of the present invention is avoided moving-coil structure in the prior art and is set
Meter, electromagnet is fixed in the cavity of shell, so that the end of a thread at lead loop both ends will not be reciprocal because of being frequently bended
Movement leads to metal fatigue and fracture in the end of a thread.Setting is spaced between electromagnet and magnetic diaphragm simultaneously, so electromagnet
Fever will not influence the vibration of magnetic diaphragm.
It should be understood that above general description and following detailed description be only it is exemplary and explanatory, not
It can the limitation present invention.
Detailed description of the invention
The drawings herein are incorporated into the specification and forms part of this specification, and shows and meets implementation of the invention
Example, and be used to explain the principle of the present invention together with specification.
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, for those of ordinary skill in the art
Speech, without creative efforts, is also possible to obtain other drawings based on these drawings.
Fig. 1 is a kind of coil-moving speaker cross section structure schematic diagram；
Fig. 2 is a kind of loadspeaker structure schematic diagram provided in an embodiment of the present invention；
Fig. 3 is a kind of magnetic diaphragm structural schematic diagram provided in an embodiment of the present invention；
Fig. 4 is another magnetic diaphragm structural schematic diagram provided in an embodiment of the present invention；
Fig. 5 is another loadspeaker structure schematic diagram provided in an embodiment of the present invention；
Fig. 6 is another magnetic diaphragm structural schematic diagram provided in an embodiment of the present invention；
Fig. 7 is another loadspeaker structure schematic diagram provided in an embodiment of the present invention；
Fig. 8 is a kind of mobile phone terminal device structure schematic diagram provided in an embodiment of the present invention；
In Fig. 1-7, symbol is indicated:
1- magnetic cylinder, 2- voice coil, one end of 21- voice coil, the other end of 22- voice coil, the both ends of 23- enameled wire, 3- vibrating diaphragm, 4-
Magnetic column, 5- elastic slice, 6- shell, 7- electromagnet, 71- winding body, 72- conductive coil, 8- magnetic diaphragm, 81- elasticity vibrating diaphragm,
82- ferromagnet, the ferromagnetic array of 83-, 9- magnetic core, 10-RF circuit, 20- memory, 30- input unit, 31- touch panel, 32-
Other input equipments, 40- display unit, 41- display panel, 50- sensor, 60- audio component, 61- loudspeaker, 62- are transaudient
Device, 70-WiFi module, 80- processor, 90- power supply.
Specific embodiment
Example embodiments are described in detail here, and the example is illustrated in the accompanying drawings.Following description is related to
When attached drawing, unless otherwise indicated, the same numbers in different drawings indicate the same or similar elements.Following exemplary embodiment
Described in embodiment do not represent all embodiments consistented with the present invention.On the contrary, they be only with it is such as appended
The example of device and method being described in detail in claims, some aspects of the invention are consistent.
Loudspeaker provided in an embodiment of the present invention does not include mobile voice coil, and drives magnetic using the magnetic field that electromagnet generates
Property diaphragm oscillations, to realize the sounding of loudspeaker.Specific structure, referring to following embodiments.
Embodiment one
Fig. 2 is a kind of loadspeaker structure schematic diagram provided in an embodiment of the present invention.
As shown in Fig. 2, loudspeaker provided in an embodiment of the present invention includes elastic slice 5, shell 6, electromagnet 7 and magnetic diaphragm 8.
Shell 6 is set as hollow structure, is provided with cavity in shell 6, carrier of the shell 6 as loudspeaker, for by loudspeaker
Main component is housed in shell 6.Wherein, electromagnet 7 is housed in the cavity of shell 6, for generating magnetic field after being powered.
Electromagnet 7 includes winding body 71 and conductive coil 72, and conductive coil 72 is wound on winding body 71.Wherein, coiling
Carrier of the body 71 as conductive coil 72, the position of winding body 71 determine the setting position of electromagnet 7.By in figure it is found that outer
Shell 6 is set as the structure of both ends open, and winding body 71 is fixed on one of open end of shell 6,72 both ends of conductive coil
The end of a thread is pierced by shell 6 by the opening of shell 6, and is electrically connected with the elastic slice 5 that 6 opening of shell is arranged in.By power supply and elastic slice 5
Electrical connection can be realized and be passed through electric current in conductive coil 72 by elastic slice 5.
Conductive coil 72 is wound on winding body 71 for convenience, winding body 71 may be configured as reel or wrapping post.
The outside wall surface of reel or wrapping post is smooth, can be wound on conductive coil 72 in the outside wall surface of reel or wrapping post.It will be around
The diameter at spool or wrapping post both ends increases, and keeps reel or the diameter at wrapping post both ends 2-5cm bigger than other positions, this
Sample can prevent conductive coil 72 from off-line on reel or wrapping post.
Magnetic diaphragm 8 is fixed on shell 6, and as shown in Figure 2, magnetic diaphragm 8 is covered on another opening of shell 6
End, it is parallel with electromagnet 7, also, magnetic diaphragm 8 is vertical with the magnetic field strength that electromagnet 7 generates.Meanwhile it is magnetic in order to prevent
Vibrating diaphragm 8 contacts with electromagnet 7 in vibration processes and generates noise, therefore setting is spaced between magnetic diaphragm 8 and electromagnet 7,
Guarantee to contact in the amplitude maximum Shi Buyu electromagnet 7 of magnetic diaphragm 8.But the setting of above-mentioned electromagnet 7 and magnetic diaphragm 8
Position is a kind of embodiment of the embodiment of the present invention, can not be as the limitation of protection scope of the embodiment of the present invention.For example, this
In inventive embodiments, magnetic diaphragm 8 can be arranged in the cavity of shell 6, periphery and 6 inner wall of shell of magnetic diaphragm 8 are fixed
Connection, the magnetic direction for generating magnetic diaphragm 8 with electromagnet 7 is vertical, this set-up mode it is also ensured that magnetic diaphragm 8 in electricity
It is vibrated under the magnetic field that magnet 7 generates.
Magnetic diaphragm 8 includes elastic vibrating diaphragm 81 and ferromagnet 82, and elastic vibrating diaphragm 81 is set as non-ferromagnetic substance production
Flexible vibrating diaphragm, ferromagnet 82 are set as laminated structure or block structure made of ferromagnetic material.For example, elastic vibrating diaphragm
81 can be set to paper base vibrating diaphragm, high molecular material vibrating diaphragm or composite diaphragm, because what non-ferromagnetic substance was generated in electromagnet 7
It will not be magnetized under magnetic field, therefore, magnetic field delay will not be generated in changing magnetic field, guarantee elastic vibrating diaphragm 81 in the magnetic of variation
Quickly change under field action.In addition, if elastic vibrating diaphragm 81 is set as the vibrating diaphragm made by ferromagnetic material, in magnetic field
Inductive loop can be generated, elastic vibrating diaphragm 81 is caused to generate heat.
Ferromagnet 82 is attached to the surface of elastic vibrating diaphragm 81, can be attracted under the influence of a magnetic field, meanwhile, the drive in magnetic field
Flowing mode flows through conductive coil 72 using the tone currents of transformation and then generates changing magnetic field, and sense of current does not become
Change, therefore the polarity in the generation of electromagnet 7 magnetic field is not flipped, with the variation of size of current, magnetic field power changes, institute
It will not be vibrated, and can vibrated to the side close to electromagnet 7 to the side far from electromagnet 7 in vibration processes with vibrating diaphragm, and
And in vibration processes, with the variation of tone currents, magnetic field strength changes, so that the Oscillation Amplitude of magnetic diaphragm 8 is sent out
Changing.
It can be seen from the above, magnetic diaphragm 8 can vibrate under the influence of a magnetic field to close to 7 direction of electromagnet, that is to say, that meeting
To recessed under magnetic fields, will not protrusion be more than horizontal plane where magnetic diaphragm 8.Ferromagnet 82 is fixed on bullet by viscose
Property vibrating diaphragm 81 surface, therefore during long-term of reciprocating vibration, under the magnetic force, ferromagnet 82 can be from elastic vibrating diaphragm 81
On fall off.Therefore, ferromagnet 82 falls off from elastic vibrating diaphragm 81 in order to prevent, ferromagnet 82 can be arranged remote in elastic vibrating diaphragm 81
From 7 one side of electromagnet, in this way under magneticaction, ferromagnet 82 is moved by magneticaction to electromagnet 7, is transported to electromagnet 7
Pressure is generated to elastic vibrating diaphragm 81 during dynamic, therefore ferromagnet 82 will not fall off from elastic vibrating diaphragm 81.If ferromagnet 82
It is arranged in elastic vibrating diaphragm 81 close to 7 one side of electromagnet, then, under magneticaction, ferromagnet 82 is moved by magnetic force to electromagnet 7
In the process, ferromagnet 82 pulls elastic vibrating diaphragm 81 to vibrate, and elastic vibrating diaphragm 81 is during the motion with opposite with direction of pull
Elastic force, the gluing dynamics that will lead in long-time vibration processes between ferromagnet 82 and elastic vibrating diaphragm 81 reduces, from elastic vibrating
It falls off on film 81.
The present embodiment, can not be as the limitation of protection scope of the embodiment of the present invention to the set-up mode of ferromagnet 82.For
Prevent ferromagnetic sheet or the ferromagnetic block from falling off from elastic vibrating diaphragm 81, magnetic diaphragm 8 also may include two elastic vibrating diaphragms 81 and
Ferromagnet 82 between two elastic vibrating diaphragms 81 is set, the two sides of ferromagnet 82 sticks together with elastic vibrating diaphragm 81 respectively, and
And the periphery of two elastic vibrating diaphragms 81 is sealed.The centre of two elastic vibrating diaphragms 81 is arranged in simultaneously due to ferromagnet 82 in aforesaid way
And it is glued together, therefore, during elastic vibrating diaphragm 81 vibrates under magneticaction, it is also possible to prevent from elastic vibrating diaphragm 81
It falls off.
Due to electromagnet 7 generate electromagnetic field be it is balanced, in order to guarantee ferromagnet 82 in magnetic fields lower stress
Ferromagnet 82, is arranged in the central area of elastic vibrating diaphragm 81 by balance.Ferromagnet 82 can be arranged according to the shape of elastic vibrating diaphragm 81
For corresponding shape, for example, elastic vibrating diaphragm 81 is circle, then ferromagnet 82 can be correspondingly arranged as circle, while elastic vibrating diaphragm
81 central point is overlapped with the central point of ferromagnet 82, while the central point of elastic vibrating diaphragm 81 and ferromagnet 82 is located at electromagnet 7
Central axis on, can guarantee that ferromagnet 82, about central point stress equalization, will not make elastic vibrating under magnetic fields in this way
Film 81 deflects.
During magnetic field strength changes with tone currents, if there are magnetic field delays in the magnetic field of the generation of electromagnet 7
Problem, it will cause the variations in magnetic field to change immediately with the variation of electric current, in turn result in the movement of magnetic diaphragm 8 by
The influence of residual magnetic field, is unable to the situation of change of accurate reproduction electric current, to cause audio distortions.Therefore, the embodiment of the present invention
In the loudspeaker of offer, winding body 71 made of diamagnetism material, diamagnetism material can be set by the winding body 71 in electromagnet 7
Material will not be magnetized in magnetic field, additional magnetic field will not be generated during curent change, therefore in changing magnetic field
The problem of there is no magnetic field delays, to make loudspeaker sound fidelity.Metallic copper, aluminium or engineering plastic can be used in diamagnetism material
Material etc..For similarly avoid the need for magnetic field delay, the plain conductor for turning to electromagnet is also needed using diamagnetism gold
Belong to material, such as metallic copper.
Certainly, loudspeaker provided in an embodiment of the present invention can also include protective shell, and protective shell is arranged outside shell 6,
It is provided with sound outlet hole on protective shell and attaches Air Filter, while being also possible to prevent dust and enter in shell 6 to make electromagnet 7 and magnetism
Vibrating diaphragm 8 covers dirt.Protective shell can be entirely wrapped in outside shell 6, and can also wrap up shell 6 goes out sound end.
Seen from the above description, loudspeaker provided in an embodiment of the present invention replaces utilizing in the prior art using electromagnet 7
Permanent magnet formed magnetic cylinder, with magnetic diaphragm 8 replace vibrating diaphragm in the prior art, magnetic diaphragm 8 electromagnetism at magnetic fields
Lower vibration is to generate sound.It is fixed on due to electromagnet 7 in the cavity of shell 6, in the end of a thread at 72 both ends of conductive coil
Metal will not be broken because of reciprocating motion.Meanwhile magnetic diaphragm 8 is not necessarily to be attached on the motion carriers such as voice coil, and therefore, magnetic
Property vibrating diaphragm 8 will not be influenced by other component, only by electromagnet 7 generate magnetic field strength influenced.
Embodiment two
Referring to Fig. 3, Fig. 3 is a kind of 8 structural schematic diagram of magnetic diaphragm provided in an embodiment of the present invention.
The magnetic diaphragm 8 of loudspeaker provided in an embodiment of the present invention is set as magnetic diaphragm 8 as shown in Figure 3, magnetism vibration
It include elastic vibrating diaphragm 81 and multiple ferromagnetic sheets or ferromagnetic block, multiple ferromagnetic sheets or ferromagnetic block on film 8 on the surface of elastic vibrating diaphragm 81
Arrangement forms ferromagnetic array 83, and the shape of ferromagnetic array 83 is symmetric figure.Elastic vibrating diaphragm 81 in Fig. 3 is Rectangular Elastic vibrating diaphragm
81, the ferromagnetic array 83 of 9 ferromagnetic sheets or ferromagnetic block formation is fixedly installed on the surface of elastic vibrating diaphragm 81, wherein ferromagnetic sheet and iron
Magnetic patch is compared, and is had any different on thickness, and the thickness of ferromagnetic sheet is thinner than the thickness of ferromagnetic block.It, can root during manufacturing loudspeaker
The amplitude requirement selection of the magnetic field strength and magnetic diaphragm 8 that generate according to electromagnet 7 is big using thickness small ferromagnetic sheet or thickness
Ferromagnetic block.
For example, when the magnetic field strength of electromagnet 7 is smaller, magnetic force is smaller to the drawing force of magnetic diaphragm 8, in order to guarantee magnetic
The amplitude of property vibrating diaphragm 8 generates sound enough, ferromagnet 82 can be set to ferromagnetic block, since the thickness of ferromagnetic block is larger, in magnetic
Big to exerting pressure for elastic vibrating diaphragm 81 under power effect, therefore, amplitude can increase.Similarly, when the magnetic field strength of electromagnet 7 is larger
When, if ferromagnetic sheet can satisfy requirement, use ferromagnetic sheet.
In order to guarantee that ferromagnetic array 83 makes the amplitude equalization of elastic vibrating diaphragm 81 under magneticaction, for example, with elastic vibrating diaphragm
Centered on 81 central point, the stress of elastic vibrating diaphragm 81 is reduced with the outside radiativity in the center of elastic vibrating diaphragm 81.Therefore, Duo Getie
Magnetic sheet or ferromagnetic block are symmetrically arranged amongst on elastic vibrating diaphragm 81 on the basis of the symmetry axis of elastic vibrating diaphragm 81.As shown in figure 3, elastic vibrating
Symmetry axis of the symmetry axis of film 81 for rectangle, the symmetrical overlapping of axles of the symmetry axis and Rectangular Elastic vibrating diaphragm 81 of ferromagnetic array 83, this
Sample setting can guarantee that magnetic diaphragm 8 will not be because of amplitude caused by ferromagnetic sheet or the arrangement position of ferromagnetic block under magnetic fields
Unbalanced problem.Because stretching and compression to surrounding air can also generate variation when the amplitude of magnetic diaphragm 8 is unbalanced,
To can also have an impact to the sound of generation.
In example 1, ferromagnet 82 falls off from elastic vibrating diaphragm 81 during Long-term Vibration in order to prevent, by iron
The setting of magnet 82 is in elastic vibrating diaphragm 81 far from 7 one side of electromagnet.During the present invention is implemented, ferromagnetic array 83 is from elastic vibrating in order to prevent
It falls off on film 81, by the setting of ferromagnetic array 83 in elastic vibrating diaphragm 81 far from electromagnetic field one side.
It can certainly be according to described in embodiment, by multiple ferromagnetic sheets or ferromagnetic block setting in two elastic vibrating diaphragms
Between 81, the periphery of two elastic vibrating diaphragms 81 is sealed.It is also possible to prevent multiple ferromagnetic sheets or ferromagnetic block block in this way from elastic vibrating
It falls off on film 81, to cause speaker fail.
Multiple ferromagnetic sheets or ferromagnetic block arrangement are fixed on to the mode of elastic vibrating diaphragm 81, avoid the ferromagnetism of larger area
Substance generates biggish inductive loop phenomenon in changing magnetic field, causes during vibration sounding to reduce magnetic diaphragm 8
Heating problem.
The setting position and shape of multiple ferromagnetic sheets or ferromagnetic block on elastic vibrating diaphragm 81 cannot function as the embodiment of the present invention
The limitation of protection scope, when elastic vibrating diaphragm 81 is round, referring to fig. 4, Fig. 4 is provided in an embodiment of the present invention another magnetic
8 structural schematic diagram of vibrating diaphragm.Elastic vibrating diaphragm 81 in Fig. 4 is round and elastic vibrating diaphragm 81, and multiple ferromagnetic sheets or ferromagnetic block are arranged in circle
81 one side far from electromagnet 7 of shape elasticity vibrating diaphragm.In multiple ferromagnetic sheets or ferromagnetic block, upper and lower two are rectangle, other are pros
Four angles of shape, rectangle and square are arc.It is zhou duicheng tuxing that multiple ferromagnetic sheets or ferromagnetic block, which arrange the figure to be formed,
The symmetry axis of figure is a wherein diameter for round and elastic vibrating diaphragm 81, and multiple ferromagnetic sheets or ferromagnetic block arrange the figure to be formed
The central point of shape is overlapped with the central point of round and elastic vibrating diaphragm 81.
Seen from the above description, movement of the embodiment of the present invention according to elastic vibrating diaphragm 81 in the magnetic field that electromagnet 7 is formed
Ferromagnet 82 is resolved into multiple ferromagnetic sheets or ferromagnetic block, and multiple ferromagnetic sheets or ferromagnetic block is symmetrically arranged amongst elasticity by rule
One side of the vibrating diaphragm 81 far from electromagnet 7, thus the induction for avoiding the ferromagnetic material of larger area from generating in changing magnetic field
Vortex, caused heating problem.
The description of other parts is referring to above-described embodiment in the present embodiment, and details are not described herein.
Embodiment three
Loudspeaker disclosed by the invention can also be used for realizing the higher loudspeaker of length-width ratio, be the present invention referring to Fig. 5, Fig. 5
Another loadspeaker structure schematic diagram that embodiment provides.
When the length-width ratio of loudspeaker is more demanding, can be realized by multiple electromagnet 7.Shown in Fig. 5, in 6 cavity of shell
Interior that multiple electromagnet 7 are fixedly installed, the conductive coil 72 on electromagnet 7 is connected in series.The placement position of multiple electromagnet 7 can root
It is arranged according to the shape of loudspeaker.For example, multiple electromagnet 7 successively can be put, work as loudspeaker when loudspeaker is set as rectangle
When being square, the quadrangle that four electromagnet 7 are placed in square shell 6 can be selected.
It is connected in series between the lead loop of multiple electromagnet 7, and uses identical coiling direction, just can guarantee so more
The polarity of a electromagnet 7 is identical, then the magnetic direction that electromagnet 7 generates is also identical.
Four electromagnet 7 are fixedly installed in the present embodiment in the cavity of shell 6, four electromagnet 7 are put on one wire,
To constitute Elongated loudspeaker.Magnetic diaphragm 8 can be driven to vibrate in order to guarantee each electromagnet 7, and make four electromagnetism
Iron 7 can combine sounding, and the ferromagnetic array 83 that the ferromagnetic sheet or ferromagnetic block on magnetic diaphragm 8 are formed is as shown in fig. 6, Fig. 6 is this
Another 8 structural schematic diagram of magnetic diaphragm that inventive embodiments provide.
It is each ferromagnetic with the one-to-one ferromagnetic array 83 of electromagnet 7 there are four settings on magnetic diaphragm 8 shown in fig. 6
Array 83 is arranged and to be formed by 9 ferromagnetic sheets or ferromagnetic block.Multiple ferromagnetic sheets or ferromagnetic block arrange the ferromagnetic array to be formed with it is upper
It is identical to state embodiment, details are not described herein.
Each ferromagnetic array 83 distinguishes face electromagnet 7, can guarantee the ferromagnetic battle array of field drives that electromagnet 7 generates in this way
Column 83 drive elastic vibrating diaphragm 81 to vibrate.The higher loudspeaker of length-width ratio, while it is also ensured that each electromagnetism not only may be implemented
Iron 7 can give full play to the effect in the magnetic field that is generated itself, and convert electrical energy into acoustical vibration.
Seen from the above description, the higher loudspeaking of length-width ratio may be implemented in loadspeaker structure provided in an embodiment of the present invention
Device, and the number and exhaust position of electromagnet can be set according to the shape of loudspeaker.Number according to electromagnet 7 and row simultaneously
Position is put, the ferromagnetic array 83 that also ferromagnetic sheet or ferromagnetic block are formed on the elastic vibrating diaphragm 81 of the setting of being adapted to property guarantees each
The magnetic field that electromagnet 7 generates can achieve the purpose that driving magnetic diaphragm 8 vibrates.
Other parts can be found in above-described embodiment in the embodiment of the present invention, and details are not described herein.
Example IV
Fig. 7 is another loadspeaker structure schematic diagram provided in an embodiment of the present invention.
In Fig. 7, along the axis direction of winding body 71, the medium position of winding body is provided with cavity, the setting of magnetic core 9 around
In the cavity at the middle part of wire body 71, magnetic core 9 is set as the weaker alnico magnets of field strength, and magnetic core 9 is that electromagnet 7 provides one
Initial complementary field.The ratio between the magnetic field strength that the magnetic field strength and electromagnet 7 generated by setting magnetic core 9 generates, will be magnetic
Vibrating diaphragm 8 is preset at a draw direction.Before electromagnet 7 is not powered on, under the action of magnetic core 9, magnetic diaphragm 8 is by magnetic core 9
Magneticaction is moved to close to 7 direction of electromagnet, to provide an initial amplitude for magnetic diaphragm 8.It is produced when electromagnet 7 is powered
When magnetisation field, magnetic diaphragm 8 is vibrated up and down on the basis of initial amplitude, at this point, can not only guarantee that magnetic diaphragm 8 exists
It is vibrated on one draw direction, while the movement of magnetic diaphragm 8 can also be made smoother.
Certainly, the embodiment of the present invention can be used for adjustment the distance between magnetic diaphragm 8 and electromagnet 7.When due to outer
When the limitation of 6 empty cavity position of shell or the limitation of loudspeaker size, initial amplitude can be provided by magnetic core 9, so as to adjust magnetism
Spacing distance between vibrating diaphragm 8 and electromagnet 7.
Loadspeaker structure provided in an embodiment of the present invention guarantees magnetic for providing an initial amplitude for magnetic diaphragm 8
The vibrating diaphragm on a draw direction in vibration processes of vibrating diaphragm 8, meanwhile, when magnetic diaphragm 8 vibrates on the basis of initial amplitude,
Vibration processes are smoother.
The embodiment of the present invention also provides a kind of mobile terminal, the mobile terminal provided can for mobile phone, tablet computer etc., with
For terminal is mobile phone: Fig. 8 is a kind of mobile phone terminal device structure schematic diagram provided in an embodiment of the present invention.With reference to Fig. 8, mobile phone
Including audio component, radio frequency (Radio Frequency, referred to as: RF) circuit 10, memory 20, input unit 30, display unit
40, sensor 50, Wireless Fidelity (wireless fidelity, referred to as: WiFi) module 70, processor 80 and power supply 90
Equal components.It will be understood by those skilled in the art that handset structure shown in Fig. 8 does not constitute the restriction to mobile phone, can wrap
It includes than illustrating more or fewer components, perhaps combines certain components or different component layouts.
It is specifically introduced below with reference to each component parts of the Fig. 8 to mobile phone:
RF circuit 10 can be used for receiving and sending messages or communication process in, signal sends and receivees, particularly, will be under base station
After row information receives, handled to processor 80；In addition, the data for designing uplink are sent to base station.In general, RF circuit include but
It is not limited to antenna, at least one amplifier, transceiver, coupler, low-noise amplifier (Low Noise Amplifier, letter
Claim: LNA), duplexer etc..In addition, RF circuit 10 can also be communicated with network and other equipment by wireless communication.
Memory 20 can be used for storing software program and module, and processor 80 is stored in the soft of memory 20 by operation
Part program and module, thereby executing the various function application and data processing of mobile phone.Input unit 30 can be used for receiving defeated
The number or character information entered, and generate key signals input related with the user setting of mobile phone and function control.Specifically
Ground, input unit 30 may include touch panel 31 and other input equipments 32.Touch panel 31, also referred to as touch screen can be received
Collecting the touch operation of user on it or nearby, (for example user is being touched using any suitable object or attachment such as finger, stylus
Control on panel 31 or the operation near touch panel 31), and corresponding attachment device is driven according to preset formula.It removes
Touch panel 31, input unit 30 can also include other input equipments 32.Specifically, other input equipments 32 may include
But in being not limited to physical keyboard, function key (such as volume control button, switch key etc.), trace ball, mouse, operating stick etc.
It is one or more.
Display unit 40 can be used for showing information input by user or be supplied to user information and mobile phone it is various
Menu.Display unit 40 may include display panel 41, optionally, can use liquid crystal display (Liquid Crystal
Display, referred to as: LCD), the shapes such as Organic Light Emitting Diode (Organic Light-Emitting Diode, referred to as: OLED)
Formula configures display panel 41.Further, touch panel 31 can cover display panel 41, when touch panel 31 is detected at it
On or near touch operation after, send processor 80 to determine the type of touch event, be followed by subsequent processing device 80 according to touch
The type of event provides corresponding visual output on display panel 41.Although touch panel 31 and display panel 41 in the figure
It is that the input and input function of mobile phone are realized as two independent components, but in some embodiments it is possible to by touch-control
Panel 31 and display panel 41 are integrated and that realizes mobile phone output and input function.
Mobile phone may also include at least one sensor 50, such as optical sensor, motion sensor and other sensors.Tool
Body, optical sensor may include ambient light sensor and proximity sensor, wherein ambient light sensor can be according to ambient light
Light and shade adjusts the brightness of display panel 41, proximity sensor can when mobile phone is moved in one's ear, close display panel 41 and/or
Backlight.As a kind of motion sensor, accelerometer sensor can detect all directions on (generally three axis) acceleration it is big
It is small, can detect that size and the direction of gravity when static, can be used to identify mobile phone posture application (such as horizontal/vertical screen switching, phase
Close game, magnetometer pose calibrating), Vibration identification correlation function (such as pedometer, tap) etc.；It can also configure as mobile phone
The other sensors such as gyroscope, barometer, hygrometer, thermometer, infrared sensor, details are not described herein.
Mobile phone further includes audio component, and wherein audio component includes voicefrequency circuit 60, loudspeaker 61, and audio component further includes
Microphone 62, microphone 62 can provide the audio interface between user and mobile phone.The audio number that voicefrequency circuit 60 can will receive
According to the electric signal after conversion, it is transferred to loudspeaker 61, voice signal output is converted to by loudspeaker 61；On the other hand, microphone
The voice signal of collection is converted to electric signal by 62, is converted to audio data after being received by voicefrequency circuit 60, then by audio data
After the processing of output processor 80, such as another mobile phone is sent to through RF circuit 10, or audio data is exported to memory
20 to be further processed.
WiFi belongs to short range wireless transmission technology, and mobile phone can help user's transceiver electronics postal by WiFi module 70
Part, browsing webpage and access streaming video etc., it provides wireless broadband internet access for user.Although showing
WiFi module 70, but it is understood that, and it is not belonging to must be configured into for mobile phone, it can according to need do not changing completely
It is omitted in the range of the essence of invention.
Processor 80 is the control centre of mobile phone, using the various pieces of various interfaces and connection whole mobile phone, is led to
It crosses operation or executes the software program and/or module being stored in memory 20, and call the number being stored in memory 20
According to, execute mobile phone various functions and processing data, thus to mobile phone carry out integral monitoring.Optionally, processor 80 may include
One or more processing units；Preferably, processor 80 can integrate application processor and modem processor, wherein application
The main processing operation system of processor, user interface and application program etc., modem processor mainly handles wireless communication.It can
With understanding, above-mentioned modem processor can not also be integrated into processor 80.
Mobile phone further includes the power supply 90 (such as battery) powered to all parts, it is preferred that power supply can pass through power supply pipe
Reason system and processor 80 are logically contiguous, to realize management charging, electric discharge and power managed etc. by power-supply management system
Function.
Although being not shown, mobile phone can also include camera, bluetooth module etc., and details are not described herein.
As can be seen from the above embodiments, loudspeaker provided by the invention mainly includes electromagnet 7 and magnetic diaphragm 8, magnetism vibration
Film 8 is vertical with the magnetic direction that electromagnet 7 generates, and guarantees that the magnetic field generated after electromagnet 7 is powered drives magnetic diaphragm 8 with magnetic
The big small vibration in field, to make a sound.Loudspeaker provided in an embodiment of the present invention is avoided moving-coil structure in the prior art and is set
Meter, electromagnet 7 is fixed in the cavity of shell 6, so that the end of a thread at lead loop both ends will not be past because of being frequently bended
Multiple movement leads to metal fatigue and fracture in the end of a thread.Setting is spaced between electromagnet 7 and magnetic diaphragm 8 simultaneously, so electromagnetism
The fever of iron 7 will not influence the vibration of magnetic diaphragm 8.
Ferromagnet 82 on magnetic diaphragm 8 is set as multiple ferromagnetic sheets or ferromagnetic block arranges the ferromagnetic array to be formed, and avoids
Bulk ferromagnetic sheet generates heating problem caused by inductive loop in magnetic field, guarantees the fidelity of loudspeaker sound.
Those skilled in the art will readily occur to other implementations of the invention after considering the disclosure of specification and embodiment
Scheme.This application is intended to cover any variations, uses, or adaptations of the invention, these modifications, purposes or adaptation
Property variation follow general principle of the invention and including the undocumented common knowledge in the art of the present invention or usual
Technological means.The description and examples are only to be considered as illustrative, and true scope and spirit of the invention are wanted by following right
It asks and points out.
It should be understood that the present invention is not limited to the precise structure already described above and shown in the accompanying drawings, and
And various modifications and changes may be made without departing from the scope thereof.The scope of the present invention is limited only by the attached claims.
Claims (9)
1. a kind of loudspeaker characterized by comprising shell, electromagnet, magnetic diaphragm and elastic slice, in which:
The shell is provided with cavity；
The electromagnet includes winding body and conductive coil, and the winding body is fixed in the cavity, the conductor wire
Circle is wound on the winding body；Magnetic core is equipped in the winding body, the magnetic core is set as the weaker alnico magnets of field strength；
On the housing, the magnetic direction that the magnetic diaphragm and the electromagnet generate hangs down for the magnetic diaphragm fixed setting
Directly, and between the magnetic diaphragm and the electromagnet it is spaced setting；
The magnetic diaphragm includes elastic vibrating diaphragm and ferromagnet, and the ferromagnet setting is in the elastic vibrating diaphragm far from the electromagnetism
The one side of iron；
The elastic slice is fixed at the outside of the shell, and both ends of the elastic slice respectively with the conductive coil are electrically connected
It connects.
2. loudspeaker according to claim 1, which is characterized in that the center of the elastic vibrating diaphragm is arranged in the ferromagnet
Region.
3. loudspeaker according to claim 1, which is characterized in that the magnetic diaphragm includes two elastic vibrating diaphragms and setting
Ferromagnet between two elastic vibrating diaphragms, the ferromagnet and at least one elastic vibrating in described two elastic vibrating diaphragms
Film is fixedly connected, the periphery sealing of described two elasticity vibrating diaphragms.
4. loudspeaker according to claim 1, which is characterized in that the magnetic diaphragm includes elastic vibrating diaphragm and multiple ferromagnetic
Piece or ferromagnetic block；
The multiple ferromagnetic sheet or ferromagnetic block arrange to form ferromagnetic array on the surface of the elastic vibrating diaphragm, the ferromagnetic array
Shape is symmetric figure.
5. loudspeaker according to claim 2, which is characterized in that the loudspeaker includes multiple electromagnet, wherein
The conductive coil of multiple electromagnet is connected in series, and is respectively set and the multiple electromagnet pair on the magnetic diaphragm
The ferromagnet answered.
6. loudspeaker according to claim 1, which is characterized in that the winding body is reel or wrapping post, and institute
State the winding body that winding body is the production of diamagnetism material.
7. loudspeaker according to claim 1, which is characterized in that along the axis direction of the winding body, the winding body
Middle part be provided with cavity；
The magnetic core is arranged in the cavity in the middle part of the winding body.
8. according to any loudspeaker of claim 2-4, which is characterized in that the elasticity vibrating diaphragm be set as paper base vibrating diaphragm,
High molecular material vibrating diaphragm or composite diaphragm.
9. a kind of terminal device, which is characterized in that including audio component；
The audio component includes voicefrequency circuit and loudspeaker according to claims 1-8, wherein the voicefrequency circuit is used
In by the electric signal after the audio data received conversion, it is transferred to the loudspeaker；
The electric signal received is converted to voice signal output by the loudspeaker.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201610817162.3A CN106303858B (en) | 2016-09-12 | 2016-09-12 | A kind of loudspeaker and terminal device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610817162.3A CN106303858B (en) | 2016-09-12 | 2016-09-12 | A kind of loudspeaker and terminal device |
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| CN106303858A CN106303858A (en) | 2017-01-04 |
| CN106303858B true CN106303858B (en) | 2019-09-17 |
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| CN201610817162.3A Active CN106303858B (en) | 2016-09-12 | 2016-09-12 | A kind of loudspeaker and terminal device |
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Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107484089A (en) * | 2017-07-26 | 2017-12-15 | 苏州逸巛声学科技有限公司 | A kind of receiver and its assembly technology |
| CN107820172B (en) * | 2017-11-16 | 2020-04-28 | 歌尔股份有限公司 | Loudspeaker and earphone comprising same |
| CN111279718B (en) * | 2017-12-20 | 2022-01-18 | 香港科技大学 | Binary space acoustic modulator suitable for sound field active remodeling |
| CN108282711B (en) * | 2018-04-03 | 2024-05-28 | 苏州倍声声学技术有限公司 | Sounding electronic product and sounding unit shell thereof |
| CN110049418A (en) * | 2019-04-24 | 2019-07-23 | 厦门圣德斯贵电子科技有限公司 | A kind of novel speaker arrangement |
| CN110267172B (en) | 2019-06-28 | 2021-02-05 | Oppo广东移动通信有限公司 | Sound production device, display device and terminal |
| CN111800714B (en) * | 2019-07-23 | 2022-03-25 | 深圳市豪恩声学股份有限公司 | Speaker and electronic equipment |
| CN110740409B (en) * | 2019-10-31 | 2021-08-24 | 维沃移动通信有限公司 | Electroacoustic device and electronic equipment |
| WO2021134256A1 (en) * | 2019-12-30 | 2021-07-08 | 瑞声声学科技(深圳)有限公司 | Sound production device |
| CN113029204B (en) * | 2021-03-01 | 2023-06-23 | 歌尔微电子股份有限公司 | Sensor and electronic device |
| CN114173260A (en) * | 2021-12-08 | 2022-03-11 | 江西台德智慧科技有限公司 | Intelligent installation method and device for batch acoustic equipment |
| CN116448951B (en) * | 2023-03-29 | 2024-05-10 | 信扬科技(佛山)有限公司 | Terminal device |
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| CN106303858A (en) | 2017-01-04 |
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