CN109348339A - Sounding device and earphone - Google Patents
Sounding device and earphone Download PDFInfo
- Publication number
- CN109348339A CN109348339A CN201811303543.5A CN201811303543A CN109348339A CN 109348339 A CN109348339 A CN 109348339A CN 201811303543 A CN201811303543 A CN 201811303543A CN 109348339 A CN109348339 A CN 109348339A
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- magnetic
- voice coil
- circuit system
- sounding device
- magnetic circuit
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- 239000012943 hotmelt Substances 0.000 claims description 24
- 229920003023 plastic Polymers 0.000 claims description 14
- 239000004033 plastic Substances 0.000 claims description 14
- 238000005452 bending Methods 0.000 claims description 5
- 239000000463 material Substances 0.000 claims description 3
- 238000001746 injection moulding Methods 0.000 claims description 2
- 230000005611 electricity Effects 0.000 claims 1
- 238000000034 method Methods 0.000 description 4
- 230000010287 polarization Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 238000004080 punching Methods 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000005672 electromagnetic field Effects 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 230000010355 oscillation Effects 0.000 description 2
- 230000005236 sound signal Effects 0.000 description 2
- 230000026683 transduction Effects 0.000 description 2
- 238000010361 transduction Methods 0.000 description 2
- 239000004831 Hot glue Substances 0.000 description 1
- 206010027439 Metal poisoning Diseases 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 230000005764 inhibitory process Effects 0.000 description 1
- 230000002427 irreversible effect Effects 0.000 description 1
- 238000010128 melt processing Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
Classifications
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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
- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/10—Earpieces; Attachments therefor ; Earphones; Monophonic headphones
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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
-
- 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
- H04R2201/00—Details of transducers, loudspeakers or microphones covered by H04R1/00 but not provided for in any of its subgroups
- H04R2201/10—Details of earpieces, attachments therefor, earphones or monophonic headphones covered by H04R1/10 but not provided for in any of its subgroups
-
- 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
Landscapes
- 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 sounding device and earphones.Sounding device includes: magnetic circuit system, and the centre of magnetic circuit system is formed with through-hole, and magnetic circuit system is formed with the magnetic gap of annular in through-hole periphery；Vibration component, vibration component include vibrating diaphragm and voice coil, and voice coil is connected on a side surface of vibrating diaphragm, and voice coil is suspended from magnetic gap；Conductive column, conductive column pass through through-hole and expose from the upper end of magnetic circuit system, and the top of conductive column tool is electrically connected contact there are two first, lead to two leads on the inside of voice coil, two leads are electrically connected with two first contacts that are electrically connected respectively；The upper surface of conductive column be flush to or lower than voice coil upper surface, the distance between upper surface and the upper surface of voice coil of conductive column are first distance L1, the upper surface in the center magnetic portion of magnetic circuit system is second distance L2 at a distance from the upper surface of voice coil, first distance L1 is greater than or equal to 0, and first distance L1 is less than or equal to 0.3 times of second distance L2.
Description
Technical field
The invention belongs to electroacoustic transduction technical fields, in particular it relates to a kind of sounding device.
Background technique
In recent years, consumer electronics product is rapidly developed, and the electronic equipments such as smart phone, VR equipment are consumed
The approval of person, is widely used.Those skilled in the art are also corresponding to relevant auxiliary products such as earphone etc. to carry out
It improves, to meet the performance requirement of electronic product, meets consumer to the needs of properties of product.
Sounding device is electroacoustic transduction component important in consumer electronics product, as loudspeaker, earpiece, earphone etc.
It is widely used.With the performance improvement of electronic product, the improvement of the acoustical behavior in relation to sounding device is also inevitable
Trend.In order to meet better acoustical behavior, sounding device generally requires that configuration sized is bigger, the stronger magnetic circuit of magnetic field strength
System.In sounding device, the size of voice coil and the size of magnetic circuit system are mutually matched.But to apply in earphone etc.
For sounding device on electronic product, the outside of voice coil is arranged in the lead and interlock circuit component of voice coil, to limit
The size of voice coil and magnetic circuit system, causes to be difficult to the problem of optimizing acoustical behavior.On the other hand, voice coil is in sounding device
Polarization is easy to produce when vibration, so that acoustic efficiency be caused flaw occur.In addition, sounding device needs the direction of vibration in voice coil
It is upper to reserve enough spaces for lead, it is touched in order to avoid lead occurs to wipe with other components, this will cause the bracket of sounding device periphery
Height on the direction of vibration of voice coil increases, and causes the volume of sounding device to increase, is unfavorable for configuring larger sized magnetic circuit
System.
Summary of the invention
It is an object of the present invention to provide a kind of improved sounding devices.
According to an aspect of the invention, there is provided a kind of sounding device, comprising:
Magnetic circuit system, the magnetic circuit system are centrally formed with through-hole, and the magnetic circuit system is formed in the through-hole periphery
There is the magnetic gap of annular；
Vibration component, the vibration component include vibrating diaphragm and voice coil, and the voice coil is connected to a side surface of the vibrating diaphragm
On, the edge of the vibrating diaphragm is fixed in the sounding device, and the voice coil is suspended from the magnetic gap；
Conductive column, the conductive column pass through the through-hole and expose from the upper end of the magnetic circuit system, the conductive column
Top tool is electrically connected contact there are two first, leads to two leads on the inside of the voice coil, two leads respectively with two described the
One be electrically connected contact electrical connection；
The upper surface of the conductive column be flush to or lower than the voice coil upper surface, the upper surface of the conductive column and institute
Stating the distance between upper surface of voice coil is first distance L1, the upper surface in the center magnetic portion of the magnetic circuit system and the voice coil
Upper surface distance be second distance L2, the first distance L1 be greater than or equal to 0, the first distance L1 is less than or equal to
0.3 times of second distance L2.
Optionally, the diameter of the periphery of the magnetic circuit system is first diameter D1, and the conductive column is located at the through-hole
In the diameter of part be second diameter D2, the second diameter D2 is less than or equal to 0.32 times of first diameter D1.
Optionally, the diameter of the periphery of the magnetic circuit system is first diameter D1, the diameter of the periphery of the sounding device
It is greater than or equal to 0.65 for the ratio of third diameter D3, the first diameter D1 and third diameter D3.
Optionally, the position that two leads are drawn from the voice coil is centrosymmetric relative to the center of the voice coil.
Optionally, two leads are bent from the voice coil extends to two described first contacts that are electrically connected.
Optionally, two V-shaped extensions of lead；Or S-type extension.
Optionally, two leads relative to a radial direction of the voice coil symmetry axis axisymmetricly.
Optionally, the bottom end of the conductive column is formed is electrically connected contact there are two second, the two described second contact quilts that are electrically connected
Be configured for external equipment formed be electrically connected, two described second be electrically connected contact respectively with two described first contacts that are electrically connected
Form electrical connection.
Optionally, the bottom end of the conductive column is exposed from the bottom of the magnetic circuit system, and the bottom end of the conductive column is formed
There is support portion, the support portion is overlying on the bottom surface of the magnetic circuit system.
Optionally, the conductive column includes side in inverted T shaped plastic body portion and is molded in the plastic body portion
Two metalworks, the metalwork includes parallel first end and the second end, and connection first end and second end
The middle part in portion, the first end form first and are electrically connected contact, and the second end forms second and is electrically connected contact.
Optionally, the magnetic circuit system includes magnetic yoke and center magnetic portion, and the magnetic yoke has bottom wall and side wall, the center
Magnetic portion is arranged in the magnetic yoke, and center magnetic portion includes the magnet and magnetic conductive board for stacking setting, center magnetic portion and institute
The through-hole that perforation is formed on the bottom wall of magnetic yoke is stated, the magnetic gap is formed in the side wall in center magnetic portion Yu the magnetic yoke
Between.
It optionally, further include bearing frame made of plastic material, the edge of the vibrating diaphragm is fixedly connected on the carrying
On the upper surface of frame, the bearing frame center has hollow out, and the magnetic circuit system is fixed on the hollow part.
Optionally, the magnetic circuit system is cylindrical structure；
Form several flanges that oriented magnetic yoke periphery extends at the top edge of the magnetic yoke, the magnetic yoke and described convex
The molding of edge integrated punching；
Positioning region is formed on the lower end surface of the bearing frame；
The magnetic yoke is set to the hollow part from one side positioning of the lower end surface of the bearing frame, and the flange is in level
The bottom that side extends upwardly to the bearing frame is fixedly connected with the positioning region.
Optionally, the positioning region includes the positioning groove being formed on the lower end surface of the bearing frame, the positioning
Groove extends to the hollow part, and the flange is in the positioning groove.
Optionally, the positioning region includes the hot melt structure being formed on the lower end surface of the bearing frame, the hot melt
Structure is fixedly connected with flange hot melt；
The positioning region further includes the positioning groove being formed on the lower end surface of the bearing frame, and the positioning groove prolongs
The hollow part is extended to, the hot melt structure is located in the positioning groove, and the flange is in the positioning groove；
The shape of the hollow out and the shape of the magnetic yoke match, and the upper end of the magnetic yoke is in the hollow out, institute
It states magnetic yoke and is embedded in the depth of the hollow out and be equivalent to the depth of the positioning groove.
The present invention also provides a kind of earphone, above-mentioned sounding device is set in the earphone.
Of the invention one has technical effect that, effectively saves space, is conducive to that volume bigger voice coil and/or magnetic is arranged
Road system.
By referring to the drawings to the detailed description of exemplary embodiment of the present invention, other feature of the invention and its
Advantage will become apparent.
Detailed description of the invention
The attached drawing for constituting part of specification describes the embodiment of the present invention, and together with the description for solving
Release the principle of the present invention.
Fig. 1 is the explosive view of sounding device provided by the invention；
Fig. 2 is the schematic top plan view of sounding device provided by the invention；
Fig. 3 is the side sectional view of sounding device provided by the invention.
Specific embodiment
Carry out the various exemplary embodiments of detailed description of the present invention now with reference to attached drawing.It should also be noted that unless in addition having
Body explanation, the unlimited system of component and the positioned opposite of step, numerical expression and the numerical value otherwise illustrated in these embodiments is originally
The range of invention.
Be to the description only actually of at least one exemplary embodiment below it is illustrative, never as to the present invention
And its application or any restrictions used.
Technology and equipment known to person of ordinary skill in the relevant may be not discussed in detail, but in appropriate situation
Under, the technology and equipment should be considered as part of specification.
It is shown here and discuss all examples in, any occurrence should be construed as merely illustratively, without
It is as limitation.Therefore, other examples of exemplary embodiment can have different values.
It should also be noted that similar label and letter indicate similar terms in following attached drawing, therefore, once a certain Xiang Yi
It is defined in a attached drawing, then in subsequent attached drawing does not need that it is further discussed.
The present invention provides a kind of sounding device, which includes magnetic circuit system, vibration component and conductive column.The skill
The conductive column for being used for Continuity signal is arranged on the inside of the voice coil of vibration component art scheme, to change drawing of drawing on voice coil
The connection type of line.By this design method, the polarization problem of voice coil can be improved.
As shown in Figure 1,3, the magnetic circuit system is centrally formed with through-hole 10, and the through-hole 10 is passed through from the bottom of magnetic circuit system
Pass to the top of the magnetic circuit system.It is formed with magnetic gap 13 in the magnetic circuit system, is formed with magnetic field in the magnetic gap 13,
It is used to that vibration component to be driven to vibrate.The magnetic gap 13 in a ring, is looped around the periphery of the through-hole 10.
As shown in Figure 1, the vibration component then includes vibrating diaphragm 21 and voice coil 22.Sound letter can be passed through in the voice coil 22
Number, the voice coil 22 can generate vibration under the magnetic fields of magnetic circuit system.The edge of the vibrating diaphragm 21 is fixedly connected on institute
It states in sounding device, the voice coil 22 is connected on a side surface of the vibrating diaphragm 21, and voice coil 22 is suspended from the magnetic circuit system shape
At magnetic gap 13 in.Voice coil 22 is able to drive the vibrating diaphragm when generating vibration and vibrates together, and diaphragm oscillations is made to generate sound.
Two leads 221 are led on the voice coil 22, the lead 221 is for importing voice signal in the voice coil 22.
As shown in Figure 1-3, the conductive column 3 is inserted in the through-hole 10 of the magnetic circuit system, the top of conductive column 3 is from described
Expose at the top of magnetic circuit system.The conductive column 3 is used to voice signal being introduced to the voice coil 22.The conductive column 3
Top is formed to be electrically connected contact 31 there are two first.Two leads 221 that the inside of voice coil 22 is drawn are to the voice coil 22
Inside extends, and two leads 221 are electrically connected with two described first respectively, and formation is electrically connected contact 31 correspondingly.It is described
It can have circuit block in conductive column 3, for transmission of sound signals to described first to be electrically connected contact 31.The voice coil 22 is logical
Cross two leads 221 and be correspondingly connected with first be electrically connected contact 31 conducting form signal circuit.
In the technical solution that the present invention designs, it is different from the prior art, the lead drawn on voice coil is not to sound
The periphery of circle extends, but extends to the central area of voice coil.Lead is connected to the top of the conductive column positioned at through hole, lead
The active force of pullling generated is concentrated to the center of voice coil.Since the conductive column for being used for Continuity signal is arranged in magnetic circuit system
The through hole of central area, so sounding device no longer needs to that other components for Continuity signal are arranged in the periphery of voice coil, section
Space is saved.It is bigger that this layout type facilitates configuration sized, volume in the case where sounding device overall volume is constant
Voice coil and magnetic circuit system help to improve the output power of sounding device, to meet the requirement of acoustical behavior.
The distance between upper surface and the upper surface of voice coil of conductive column are first distance L1, the center magnetic portion of magnetic circuit system
Upper surface at a distance from the upper surface of voice coil be second distance L2.The first distance L1 refers to the axial direction along conductive column, leads
The vertical distance of upper surface of the upper surface of electric column apart from voice coil.The second distance L2 refers to the axial direction along voice coil, the magnetic
The vertical distance of upper surface of the center magnetic portion of road system apart from voice coil.Optionally, the upper surface of the conductive column be flush to or
Person is lower than the upper surface of the voice coil, as shown in figure 3, the i.e. described first distance L1 is greater than or equal to 0.The upper surface of conductive column compared with
It is low, it can effectively avoid colliding between vibrating diaphragm and conductive column, prevent from drawing when diaphragm oscillations because colliding with conductive column
Play noise.Preferably, first distance L1 is less than or equal to 0.3 times of second distance L2.If the upper surface of conductive column is lower than sound
The distance of the upper surface of circle is excessive, is easy to collide with the center magnetic portion of magnetic circuit system it will cause the lead of voice coil, generate
Collide sound.On the one hand, the noise of generation can reduce the sound quality of sounding device, on the other hand, can also exist and cause voice coil leads
The risk of broken string.Preferably, the first distance L1 is greater than or equal to 0, the of the first distance L1 less than or equal to 0.3 times
Two distance L2.
The diameter of the periphery of the magnetic circuit system be first diameter D1, conductive column be located at the through-hole in part it is straight
Diameter is second diameter D2.Preferably, the second diameter D2 is less than or equal to 0.32 times of first diameter D1.The magnetic circuit system
Close magnetic gap part be to generate electromagnetic force contribution the best part, the position of the through-hole is far between the magnetic
Gap.Therefore, through-hole is opened up in the centre of the separate magnetic gap of magnetic circuit system and place conductive column, can effectively avoid magnetic circuit
The structural penalties of system are influenced caused by generating electromagnetic field.Preferably, conductive column reduces in technique controlled range as far as possible
Two diameter D2.It can be avoided in the range of D2≤0.32*D1 and cause substantive negative effect to the intensity for generating electromagnetic field,
Loss of sensitivity is in 0.2dB or less.
The diameter of the periphery of sounding device is third diameter D3.In a preferred embodiment of the invention, described first is straight
The ratio of diameter D1 and third diameter D3 is greater than or equal to 0.65.In the prior art, the frame positioned at magnetic circuit system periphery, shell
On be molded with the circuit devcie of pad for electrical connection, occupy the larger space of magnetic circuit system periphery.It is whole in sounding device
In the limited situation in the space of body, cause the available space for leaving magnetic circuit system itself for smaller.The present invention utilizes and is set to magnetic circuit
By voice coil and external electrical connections, the periphery of magnetic circuit system no longer needs to that other electrical connections are arranged the conductive column of system centre, thus
The periphery of magnetic circuit system saves space.Compared with the existing technology, the bigger of the size design of magnetic circuit system can be improved into magnetic
The performance of road system.Preferably, the ratio of the first diameter D1 and third diameter D3 is greater than or equal to 0.65.Optionally, institute
The ratio for stating first diameter D1 and third diameter is 0.75.
In a preferred embodiment, as shown in Fig. 2, the position that two leads 221 are drawn from the voice coil 22
The distribution form that center relative to the voice coil 22 is centrosymmetric.Since the position of two leads extraction is relative in voice coil
The heart is centrosymmetric, so voice coil is in vibration, the active force of pullling that lead generates voice coil is symmetrical.It is set by this
Meter, can effectively improve the stability and balance of voice coil vibrations.Although the active force of pullling that lead generates may be to voice coil
Vibration generates inhibition, but symmetrical active force caused by two leads can reduce the risk that voice coil generates polarization,
Help to improve the sound quality of sounding device.
Optionally, it after the lead is drawn from the voice coil, is extended in voice coil with bending the form extended
On the conductive column in heart district domain, and it is electrically connected a little to be formed with first and is electrically connected.The lead-line configuration is extended and can be increased at bending
The length of lead, so that lead has better deformability.In practical applications, one end of the lead is fixedly connected on institute
It states first to be electrically connected on contact, the other end is fixedly connected with the main body of the voice coil.When voice coil generates vibration, the both ends of lead are difficult
Exempt to generate relative displacement, vibration.In this case, the lead for bending extension has better deformability, can be with sound
The vibration of circle is deformed, and reduces a possibility that voice coil is broken because of vibration.On the other hand, lead can be formed slow by deformation
Punching, avoid lead to voice coil generate it is excessive pull active force, reduce its generation pulls active force to the shadow of the amplitude of voice coil
It rings, improves the electric energy conversion ratio of voice coil, guarantee the sound output loudness of sounding device.
Optionally, as shown in Fig. 2, the V-shaped extension of the lead 221.Lead 221 is designed to that V-type can either make lead
It with better deformability, is not easily broken damage, and can make lead self-recovery to original after voice coil stops vibration
Shape reduces a possibility that irreversible plastic deformation occurs for lead.The present invention does not carry out the bending shape of the lead
Concrete restriction can also extend the lead design at S-type extension or in other shapes in other embodiments.
Preferably, two leads are axisymmetricly distributed relative to a symmetry axis radially of the voice coil.Example
As shown in Fig. 2, two leads 221 are axisymmetricly distributed relative to longitudinal diameter of voice coil 22 in figure.The two of this distribution mode
What branch lead generated respectively pull, and that active force is also is symmetrical, and in voice coil vibrations, lead can assist in the appearance of balance voice coil
State more effectively reduces a possibility that voice coil generates polarization.
Optionally, as shown in figure 3, the bottom end of the conductive column 3 is formed is electrically connected contact 32 there are two second.Two described
Two be electrically connected contact 32 be configurable for external equipment formed be electrically connected, voice signal is introduced to from external electronic device
In sounding device.Two described second contacts 32 that are electrically connected then be electrically connected respectively with two described first contact 31 formation be electrically connected.?
In practical application, sounding device provided by the invention needs to be assembled in other electronic equipments, for example, be assembled to mobile phone, earphone,
In the equipment such as miniature loudspeaker.So sounding device usually requires to receive voice signal from other equipment again by voice signal turn
It is melted into sound.By being electrically connected contact in the bottom end of conductive column setting second, the voice signal on external equipment can be led
Enter in the conductive column.Electrical connection is a little formed since two second contacts that are electrically connected are electrically connected with two first respectively, so sound
Signal can be transmitted on the lead through the second be electrically connected contact, first contact that is electrically connected.Another advantage of the embodiment exists
In the second electrical connection point is formed in the bottom end of conductive column, and the through-hole penetrates through the magnetic circuit system, therefore is electrically connected by second
When contact is electrically connected with external equipment, electrical connector easily can be configured from the bottom of magnetic circuit system, and then be electrically connected with second
Contact connection.This design method is easy to implement electrical connection, the mode compatible degree being also assembled to sounding device on external equipment
It is higher.
Preferably, as shown in figure 3, the bottom end of the conductive column 3 is exposed from the bottom of the magnetic circuit system.By conductive column 3
Bottom end expose from magnetic circuit system, be capable of more aspect makes the second be electrically connected contact 32 and external equipment be formed and be electrically connected, and also can
Enough simplify the structure design of external equipment, simplified sounding device is assembled to the mode on external equipment.
Preferably, as shown in Figure 1,3, the bottom end of the conductive column 3 can also be formed with support portion 33.As shown in figure 3, leading
The side view structure of electric column 3 is in inverted T shaped.It is fixed that the support portion 33 can be improved the assembly between the conductive column 3 and magnetic circuit system
Position precision, also can be improved the integrated degree of conductive column 3 Yu magnetic circuit system.The bottom surface of the support portion can be used as sounding device
Whole bottom surface, for assembly etc. to be contacted, be bonded with external equipment.By the way that the support portion is arranged, so that magnetic circuit system is not necessarily to
It is directly contacted with external equipment, strengthens the protective effect to magnetic circuit system.
The present invention not to how to make in the conductive column first be electrically connected contact with second be electrically connected a little formed be electrically connected into
Row limitation.Optionally, in the conductive column can using the components such as conductive sheet or electric wire by two second be electrically connected contact respectively with
Two first electrical connection points form electrical connection.
For the specific structure of the conductive column, the present invention provides a kind of specific embodiments.As shown in Figure 1,3, institute
Stating conductive column includes plastic body portion, main structure of the plastic body portion as the conductive column, and side is in inverted T shaped knot
Structure.Conductive column further includes two metalworks, and two metalwork injection moldings are fixed in the plastic body portion.The metalwork
It is upper that there is first end, the second end and middle part.First end on the same metalwork is with the second end in relatively parallel
Posture, the middle part is connected between the first end and the second end.The first end is for constituting above-mentioned the
One is electrically connected contact, and the second end is then used to constitute described second and is electrically connected contact.The first end can be from the plastics
Expose on the top surface of body part, the second end then exposes from the bottom surface in the plastic body portion.This configuration mode is just
Signal conduction is realized by the metalwork in lead and external equipment.Moreover, the middle part of metalwork is moulded in plastics sheet
Inside body portion, it is not easy to interfere with each other with other conductive, magnetic conductive parts in sounding device.
Optionally, the magnetic circuit system can also include magnetic yoke 12 and center magnetic portion 11, the magnetic yoke 12 have bottom wall and
Side wall, as shown in Figure 1,3.Center magnetic portion 11 is arranged in the magnetic yoke 12, and center magnetic portion 11 includes magnet and leads
Magnetic sheet, magnet and magnetic conductive board, which stack, to be arranged.It is formed with perforation on the center in center magnetic portion 11 and the bottom wall of the magnetic yoke 12,
The perforation of the two docks to form the through-hole 10.The magnetic gap 13 is then formed in center magnetic portion 11 and the magnetic yoke 12
Between side wall.The magnetic gap 13 is located at around the through-hole 10.
Optionally, as shown in Figure 1,3, sounding device can also include using bearing frame 4 made of plastic material, described
Bearing frame 4 is used to provide support, positioning for components such as the magnetic circuit system, vibration component, conductive columns 3.The vibrating diaphragm 21
Edge is fixedly connected on the upper surface of the bearing frame 4, and the central area of the bearing frame 4 has hollow out, the sound
Circle 22 is suspended from the hollow part, and the magnetic circuit system is then fixed at the hollow part.The bearing frame 4 only passes through hollow out
Place and lower end surface and the top of the magnetic yoke 12 form a fixed connection, and the bearing frame 4 will not be to the side of the magnetic yoke 12
Wall and bottom wall, which are formed, to be surrounded.In this embodiment, the bearing frame can either play the role of positioning, fixation, again
Excessive space will not be occupied, provides condition for the bigger magnetic circuit system of sounding device configuration sized, volume.
Optionally, the magnetic circuit system integrally can be with structure cylindrical, as shown in Figure 1,3.On the bearing frame 4
Hollow out is then rounded, so that the magnetic circuit system is docked at the hollow part.
Optionally, at the top edge of the magnetic yoke, the flange that the outside of oriented magnetic yoke extends is formed.The flange from
The top of the side wall extends to the periphery of side wall.The flange with the bearing frame for forming a fixed connection.Optionally,
The magnetic yoke and the flange are integrated stamping forming component.The molding structural reliability of integrated punching is high, and is more convenient for
It is assembled.
Further, positioning region is formed on the lower end surface of the bearing frame.The magnetic yoke is from the bearing frame
The side of lower end surface is set to the hollow part.The flange is corresponding with the position of the positioning region, and flange is in the horizontal direction
The bottom of the bearing frame is extended to, the two forms a fixed connection, so that the magnetic circuit system is fixedly connected with bearing frame.
Preferably, the positioning region includes that positioning groove is formed on the lower end surface for be formed in the bearing frame, described
Positioning groove is recessed a distance upwards from the lower end surface of the bearing frame.Also, the locating slot is along the lower end surface
Surface extend, extend to the hollow part.That is, extending to the edge of hollow out.
After the magnetic yoke and the bearing frame mutually assemble, the flange is in the positioning groove.Pass through and configures
The locating slot can be improved the positioning accuracy between the bearing frame and magnetic yoke.
Another optional embodiment is that the positioning region includes the heat being formed on the lower end surface of the bearing frame
Clinkering structure.When the magnetic circuit system and bearing frame are assembled together, the flange is in corresponding with the hot melt structure
Position, flange can be contacted with hot melt structure.On the finished device of the sounding device, the hot melt structure is by hot melt
Reason, hot melt are covered on the flange, form a fixed connection with the flange.Flange and hot melt structure pass through hot-melt adhesive paste
Mode, which is realized, to be reliably fixedly connected, and guarantees the structural reliability of sounding device.
Preferably, the positioning region may include the hot melt structure and above-mentioned positioning groove.The hot melt structure position
In the positioning groove, the flange is heated with the hot melt structure in positioning groove and is fixed in the positioning groove
Connection.In the preferred embodiment, on the one hand, the fit system of positioning groove and flange can be improved bearing frame and magnetic circuit system
The positioning accuracy of system.On the other hand, when carrying out hot melt processing to hot melt structure, the hot melt structure can flow into described fixed
In the groove of position, and it is wrapped in the flanged periphery, is fixedly connected with reliability between bearing frame and magnetic yoke to improve.Into one
Step ground, by the locating slot accommodate hot melt structure, can be avoided hot melt structure at least part structure hot melt dissolve after, stream
The position far from flange is dropped down, prevents product shape caused by trickling due to hot melt structure from the problems such as flaw occur.
The present invention also provides a kind of earphone products, above-mentioned sounding device is configured in the earphone.Have in earphone products
In the space of limit, sounding device designed by the invention can more effectively utilize space, the bigger magnetic circuit system of configuration volume
System and/or voice coil, to enhance the acoustical behavior of sounding device, and then meet the performance requirement of earphone.
Although some specific embodiments of the invention are described in detail by example, the skill of this field
Art personnel it should be understood that above example merely to being illustrated, the range being not intended to be limiting of the invention.The skill of this field
Art personnel are it should be understood that can without departing from the scope and spirit of the present invention modify to above embodiments.This hair
Bright range is defined by the following claims.
Claims (16)
1. a kind of sounding device characterized by comprising
Magnetic circuit system, the centre of the magnetic circuit system are formed with through-hole, and the magnetic circuit system is formed in the through-hole periphery
There is the magnetic gap of annular；
Vibration component, the vibration component include vibrating diaphragm and voice coil, and the voice coil is connected on a side surface of the vibrating diaphragm, institute
Voice coil is stated to be suspended from the magnetic gap；
Conductive column, the conductive column pass through the through-hole and expose from the upper end of the magnetic circuit system, the top of the conductive column
Tool is electrically connected contact there are two first, leads to two leads on the inside of the voice coil, two leads respectively with two first electricity
Tie point electrical connection；
The upper surface of the conductive column be flush to or lower than the voice coil upper surface, the upper surface of the conductive column and the sound
The distance between upper surface of circle is first distance L1, and the upper surface in the center magnetic portion of the magnetic circuit system is upper with the voice coil
The distance of end face is second distance L2, and the first distance L1 is greater than or equal to 0, and the first distance L1 is less than or equal to 0.3
Second distance L2 again.
2. sounding device according to claim 1, which is characterized in that the diameter of the periphery of the magnetic circuit system is first straight
Diameter D1, the conductive column be located at the through-hole in part diameter be second diameter D2, the second diameter D2 be less than or
First diameter D1 equal to 0.32 times.
3. sounding device according to claim 1, which is characterized in that the diameter of the periphery of the magnetic circuit system is first straight
The diameter of diameter D1, the periphery of the sounding device are third diameter D3, and the ratio of the first diameter D1 and third diameter D3 are big
In or equal to 0.65.
4. sounding device according to claim 1, which is characterized in that the position phase that two leads are drawn from the voice coil
It is centrosymmetric for the center of the voice coil.
5. sounding device according to any one of claims 1 to 4, which is characterized in that two leads are from the voice coil
Bending extends to two described first contacts that are electrically connected.
6. sounding device according to claim 5, which is characterized in that two V-shaped extensions of lead；Or it is S-type
Extend.
7. sounding device according to claim 5, which is characterized in that one relative to the voice coil of two leads
Radial symmetry axis is axisymmetricly.
8. sounding device according to claim 1, which is characterized in that the bottom end of the conductive column forms electric there are two second
Tie point, two described second contacts that are electrically connected are configurable for being formed with external equipment and be electrically connected, and two described second are electrically connected
Contact is electrically connected with two described first respectively a little forms electrical connection.
9. sounding device according to claim 8, which is characterized in that the bottom end of the conductive column is from the magnetic circuit system
Bottom is exposed, and the bottom end of the conductive column is formed with support portion, and the support portion is overlying on the bottom surface of the magnetic circuit system.
10. sounding device according to claim 9, which is characterized in that the conductive column includes side in inverted T shaped plastics
Two metalworks of body part and injection molding in the plastic body portion, the metalwork includes parallel first end and second
End, and the middle part of connection first end and the second end, the first end form first and are electrically connected contact, and described second
End forms second and is electrically connected contact.
11. sounding device according to claim 1, which is characterized in that the magnetic circuit system includes magnetic yoke and center magnetic portion,
The magnetic yoke has bottom wall and side wall, and center magnetic portion is arranged in the magnetic yoke, and center magnetic portion includes stacking setting
Magnet and magnetic conductive board, the through-hole of perforation, the magnetic gap shape are formed on the bottom wall of center magnetic portion and the magnetic yoke
At between center magnetic portion and the side wall of the magnetic yoke.
12. sounding device according to claim 11, which is characterized in that it further include bearing frame made of plastic material,
The edge of the vibrating diaphragm is fixedly connected on the upper surface of the bearing frame, and the bearing frame center has hollow out, described
Magnetic circuit system is fixed on the hollow part.
13. sounding device according to claim 12, which is characterized in that the magnetic circuit system is cylindrical structure；
Several flanges that oriented magnetic yoke periphery extends, the magnetic yoke and the flange one are formed at the top edge of the magnetic yoke
Body punch forming；
Positioning region is formed on the lower end surface of the bearing frame；
The magnetic yoke is set to the hollow part from one side positioning of the lower end surface of the bearing frame, and the flange is in the horizontal direction
On extend to the bottom of the bearing frame and be fixedly connected with the positioning region.
14. sounding device according to claim 13, which is characterized in that the positioning region includes being formed in the bearing frame
Positioning groove on the lower end surface of frame, the positioning groove extend to the hollow part, and the flange is embedded in the positioning groove
In.
15. sounding device according to claim 13, which is characterized in that the positioning region includes being formed in the bearing frame
Hot melt structure on the lower end surface of frame, the hot melt structure are fixedly connected with flange hot melt；
The positioning region further includes the positioning groove being formed on the lower end surface of the bearing frame, and the positioning groove extends to
The hollow part, the hot melt structure are located in the positioning groove, and the flange is in the positioning groove；
The shape of the hollow out and the shape of the magnetic yoke match, and the upper end of the magnetic yoke is in the hollow out, the magnetic
The depth that yoke is embedded in the hollow out is equivalent to the depth of the positioning groove.
16. a kind of earphone, which is characterized in that be provided in the earphone claim 1-15 it is one of any described in sounding dress
It sets.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811303543.5A CN109348339B (en) | 2018-11-02 | 2018-11-02 | Sound generating device and earphone |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811303543.5A CN109348339B (en) | 2018-11-02 | 2018-11-02 | Sound generating device and earphone |
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| Publication Number | Publication Date |
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| CN109348339A true CN109348339A (en) | 2019-02-15 |
| CN109348339B CN109348339B (en) | 2024-03-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201811303543.5A Active CN109348339B (en) | 2018-11-02 | 2018-11-02 | Sound generating device and earphone |
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| CN202435569U (en) * | 2011-12-01 | 2012-09-12 | 常州美欧电子有限公司 | Earphone core |
| CN202435605U (en) * | 2011-12-23 | 2012-09-12 | 常州美欧电子有限公司 | Sounder |
| US20140205135A1 (en) * | 2012-06-20 | 2014-07-24 | Panasonic Corporation | Loudspeaker and equipment including the same |
| CN204929250U (en) * | 2015-09-01 | 2015-12-30 | 歌尔声学股份有限公司 | Loudspeaker |
| CN205510380U (en) * | 2015-12-31 | 2016-08-24 | 歌尔声学股份有限公司 | Multi -function device with vibration function and sound producing function |
| CN106385652A (en) * | 2016-12-05 | 2017-02-08 | 深圳市睿冠科技有限公司 | Earphone minisize loudspeaker assembly |
| CN208891036U (en) * | 2018-11-02 | 2019-05-21 | 歌尔股份有限公司 | Sounding device and earphone |
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2018
- 2018-11-02 CN CN201811303543.5A patent/CN109348339B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008004272A1 (en) * | 2006-07-03 | 2008-01-10 | Pioneer Corporation | Speaker device and speaker unit |
| CN202435569U (en) * | 2011-12-01 | 2012-09-12 | 常州美欧电子有限公司 | Earphone core |
| CN202435605U (en) * | 2011-12-23 | 2012-09-12 | 常州美欧电子有限公司 | Sounder |
| US20140205135A1 (en) * | 2012-06-20 | 2014-07-24 | Panasonic Corporation | Loudspeaker and equipment including the same |
| CN204929250U (en) * | 2015-09-01 | 2015-12-30 | 歌尔声学股份有限公司 | Loudspeaker |
| CN205510380U (en) * | 2015-12-31 | 2016-08-24 | 歌尔声学股份有限公司 | Multi -function device with vibration function and sound producing function |
| CN106385652A (en) * | 2016-12-05 | 2017-02-08 | 深圳市睿冠科技有限公司 | Earphone minisize loudspeaker assembly |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN109348339B (en) | 2024-03-08 |
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