CN206413185U - Flat film sound-producing device - Google Patents
Flat film sound-producing device Download PDFInfo
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- CN206413185U CN206413185U CN201621459727.7U CN201621459727U CN206413185U CN 206413185 U CN206413185 U CN 206413185U CN 201621459727 U CN201621459727 U CN 201621459727U CN 206413185 U CN206413185 U CN 206413185U
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- voice coil
- producing device
- sound
- flat
- switching section
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Abstract
The utility model discloses a kind of flat film sound-producing device, including：Flat vibrating diaphragm；Voice coil loudspeaker voice coil conductor layer, voice coil loudspeaker voice coil conductor layer is arranged on a side surface of flat vibrating diaphragm, voice coil loudspeaker voice coil conductor layer is laid by a plurality of wire annulus being arranged concentrically and formed, the radius of every wire annulus is different, connected between two adjacent wire annulus by radius switching section, each bar wire annulus is sequentially connected in series according to the order of decreasing radius, one section of direction switching section is at least included in radius switching section, when voice coil loudspeaker voice coil conductor layer is passed through electric current, direction switching section inverts the sense of current in two adjacent wire annulus；Magnet assemblies, at least include two annular magnets being arranged concentrically, the quantity of annular magnet suppose big by 1 to the quantity of switching section, annular magnet and wire annulus are coaxial, position where the switching section of direction is corresponding with the interstitial site between two adjacent annular magnets, and the magnetic pole of the gap location of adjacent two annular magnets between is identical.
Description
Technical field
The utility model belongs to sound-producing device technical field, specifically, and the utility model is related to a kind of flat film sound-producing device.
Background technology
Flat film loudspeaker is that the voice coil loudspeaker voice coil of loudspeaker and diaphragm are combined into one, and voice coil loudspeaker voice coil wire is by very thin metallic conductor structure
Into and it is open and flat in vibrating diaphragm plane, magnetic circuit part is distributed across the parallel magnets of surface sound film one or both sides, when to flat
By electromagnetism stress during film coil input current signal, surface sound film is driven to be vibrated in the gap of magnet side or centre,
So as to send sound.Such flat film loudspeaker vibrational system quality is very light, transient response preferably, and product radiating efficiency compared with
Height, resistance to power is good etc..
The distribution mode of the coil 02 of existing flat film loudspeaker 01 as shown in figure 1, coil 02 is arranged with similar " M " type,
The major part of coil 02 has bending part along linear extension in overhang.Match with this flat vibrating diaphragm and use
Multiple bar magnets, bearing of trend and the edge on coil 02 of bar magnet are equidistantly disposed with bar magnet, loudspeaker
Linearly extended line segment is parallel.The average flux density of this flat vibrating diaphragm is not high, and coil 02 has bending region, a portion
Bending region is distributed in beyond the effective magnetic field of magnet, is not contributed acting power；Although another part bending region point
Cloth is due to that bearing of trend has parallel trend with the magnetic induction line of magnet in effective magnetic field, and left hand rule is unsatisfactory for substantially,
Actually active line length is shorter, and the contribution to generation point magnetic force is less.So, the driving that existing flat film loudspeaker is subject to
Power is smaller, and the acoustic pressure of radiation is relatively low.
Thus, it is necessary to be improved to the coil cabling mode on flat vibrating diaphragm, or improve the magnetic in flat-die loudspeaker
Line structure, to improve the utilization rate of coil.
Utility model content
A purpose of the present utility model is to provide a kind of new solution of flat film sound-producing device.
According to first aspect of the present utility model there is provided a kind of flat film sound-producing device, including：
Flat vibrating diaphragm；
Voice coil loudspeaker voice coil conductor layer, the voice coil loudspeaker voice coil conductor layer is arranged on a side surface of the flat vibrating diaphragm, the voice coil loudspeaker voice coil conductor layer
Laid and formed by a plurality of wire annulus being arranged concentrically, the radius of every wire annulus is different, adjacent two wires circle
Connected between ring by radius switching section, wire annulus is sequentially connected in series according to the order of decreasing radius described in each bar, half quarter sawing
Changing at least includes one section of direction switching section in section, when the voice coil loudspeaker voice coil conductor layer is passed through electric current, the direction switching section makes adjacent
Two wire annulus in the sense of current reversion；
Magnet assemblies, the magnet assemblies at least include two annular magnets being arranged concentrically, the number of the annular magnet
Amount analogy is big by 1 to the quantity of switching section, and the magnet assemblies are located at the side of the flat vibrating diaphragm, and the annular magnet is led with described
Line annulus is coaxial, and the position where the direction switching section is corresponding with the interstitial site between two adjacent annular magnets, phase
The magnetic pole of gap location of the two adjacent annular magnets between is identical；
Sound-producing device housing, the sound-producing device housing is configured for carrying the peaceful vibrating diaphragm of the annular magnet.
Alternatively, there are two sections of direction switching sections, the magnet assemblies are set with one heart including three on the voice coil loudspeaker voice coil conductor layer
The annular magnet put.
Alternatively, the spacing between the adjacent two wire annulus is more than 0.3mm.
Alternatively, the flat film sound-producing device includes magnet assemblies described in two groups, and magnet described in two groups is separately positioned on institute
State the both sides of flat vibrating diaphragm.
Alternatively, the flat film sound-producing device includes circular magnetic conductive board, and the circular magnetic conductive board is fixed on the sounding dress
Put in housing, the magnet assemblies are fixedly installed on the circular magnetic conductive board, there is sound transmission aperture, institute on the circular magnetic conductive board
The interstitial site stated between sound transmission aperture and the annular magnet is corresponding.
Alternatively, the edge of the flat vibrating diaphragm has the first signal tie point and secondary signal tie point, radius maximum
The wire annulus is electrically connected with the first signal tie point, in the minimum wire annulus of radius or voice coil loudspeaker voice coil conductor layer
The wire of the heart is electrically connected with the secondary signal tie point.
Alternatively, the flat vibrating diaphragm is rounded, and the edge of the flat vibrating diaphragm has ring stiffener, the side of the flat vibrating diaphragm
Edge is fixed on the sound-producing device housing.
Alternatively, stiffener rings are provided with the voice coil loudspeaker voice coil conductor layer, the stiffener rings are connected positioned at the direction switching section
Two wire annulus between, two wire annulus are separated, in the stiffener rings have breach, the direction switching section
Positioned at the indentation, there.
Alternatively, the sound-producing device housing includes fore shell and rear shell, and the circular magnetic conductive board is fixedly installed in the rear
On shell, it is provided with the rear shell on rear acoustic aperture, the outer surface of the rear shell covered with tuning screen cloth, the tuning screen cloth covering
The rear acoustic aperture, the fore shell is fastened on shell in the rear, and the flat vibrating diaphragm is close to the fore shell.
Alternatively, two weld tabs are provided with the sound-producing device housing, two weld tabs connect with the first signal respectively
Contact and the electrical connection of secondary signal tie point.
One of the present utility model has the technical effect that and improves voice coil loudspeaker voice coil by improving the structure of voice coil loudspeaker voice coil and magnet assemblies
Utilization rate.
It is of the present utility model other by referring to the drawings to the detailed description of exemplary embodiment of the present utility model
Feature and its advantage will be made apparent from.
Brief description of the drawings
The accompanying drawing for being combined in the description and constituting a part for specification shows embodiment of the present utility model, and
And be used to explain principle of the present utility model together with its explanation.
Fig. 1 is the structural representation of flat vibrating diaphragm in the prior art；
Fig. 2 is the part explosive view for the flat film sound-producing device that the utility model is provided；
Fig. 3 is the positive structure schematic for the flat vibrating diaphragm that the utility model is provided；
Fig. 4 be the utility model provide flat film sound-producing device in magnet assemblies structural representation；
Fig. 5 is the side cross sectional views of the peaceful vibrating diaphragm of the magnetic circuit component；
Fig. 6 is the structure schematic diagram for the flat vibrating diaphragm that the utility model is provided；
Fig. 7 is the structural representation of the rear shell for the flat film sound-producing device that the utility model is provided.
Embodiment
Various exemplary embodiments of the present utility model are described in detail now with reference to accompanying drawing.It should be noted that：Unless another
Illustrate outside, the part and the positioned opposite of step, numerical expression and numerical value otherwise illustrated in these embodiments is not limited
Make scope of the present utility model.
The description only actually at least one exemplary embodiment is illustrative below, never as to this practicality
New and its application or any limitation used.
It may be not discussed in detail for technology, method and apparatus known to person of ordinary skill in the relevant, but suitable
In the case of, the technology, method and apparatus should be considered as a part for specification.
In shown here and discussion all examples, any occurrence should be construed as merely exemplary, without
It is as limitation.Therefore, other examples of exemplary embodiment can have different values.
It should be noted that：Similar label and letter represents similar terms in following accompanying drawing, therefore, once a certain Xiang Yi
It is defined, then it need not be further discussed in subsequent accompanying drawing in individual accompanying drawing.
The utility model provides a kind of flat film sound-producing device, and the flat film sound-producing device includes flat vibrating diaphragm 1, voice coil loudspeaker voice coil conductor layer
2nd, magnet assemblies and sound-producing device housing, as shown in Figure 2.The sound-producing device housing is used to carry the He of annular magnet 31
Flat vibrating diaphragm 1, the flat vibrating diaphragm 1 and magnet assemblies are arranged in the sound-producing device housing, flat vibrating diaphragm 1 and magnet assemblies position phase
It is right.The voice coil loudspeaker voice coil conductor layer 2 is laid on the flat vibrating diaphragm 1, and the electric current of voice signal is passed through in the voice coil loudspeaker voice coil conductor layer 2
When, the flat vibrating diaphragm 1 of the driver under stress of voice coil loudspeaker voice coil conductor layer 2 vibrates.
Especially, as shown in figure 3, the voice coil loudspeaker voice coil conductor layer 2 is laid by a plurality of wire annulus 21 being arranged concentrically is formed, often
The radius of wire annulus 21 described in bar is different.Connected between two adjacent wire annulus 21 by radius switching section 22, such as Fig. 3 institutes
Show.Wire annulus 21 is sequentially connected in series according to the order of decreasing radius described in each bar, and all wire annulus 21 are connected into from outside to inside
One circuit pathways.Especially, one section of direction switching section 221 is also at least included in the radius switching section 22, the direction is cut
Section 221 is changed in addition to playing a part of connecting the different wire annulus 21 of radius, the circular direction for changing wire annulus 21 is also acted as
Effect.When being passed through signal code in voice coil loudspeaker voice coil conductor layer 2, the direction switching section 221 makes two adjacent wire annulus
Sense of current reversion in 21.
By taking the flat vibrating diaphragm 1 shown in Fig. 3 as an example, outermost wire annulus 21 clockwise round after by the radius
Switching section 22 is connected on inner side adjacent wires annulus 21, and the wire annulus 21 of inner side is also by half after rounding clockwise
The wire annulus 21 adjacent with inner side of footpath switching section 22 is connected.And the 3rd open traverse annulus 21 is clockwise around one from outside to inside
Zhou Hou, is connected, the 4th open traverse annulus 21 is then along inverse by direction switching section 221 with the 4th open traverse annulus 21 of inner side
Being directed around after one week of hour hands is connected on the wire annulus 21 of inner side by radius switching section 22 again.It can be seen that, cut by direction
It is opposite to change the circular direction of the two adjacent open traverse annulus 21 of the connection of section 221.This structure design, which makes to be passed through voice coil loudspeaker voice coil, to be led
Flow direction of the signal code of line layer 2 in the wire annulus 21 of the both sides of direction switching section 221 is on the contrary, around direction upset
180 degree.
The magnet assemblies then at least include two annular magnets 31 being arranged concentrically, the quantity ratio of the annular magnet 31
The quantity of the direction switching section 221 is big by 1.By taking the embodiment shown in Fig. 2-5 as an example, when setting on the voice coil loudspeaker voice coil conductor layer 2
When having direction of both ends switching section 221, the magnet assemblies include three annular magnets 31, and three annular magnets 31 are concentric
Set.The magnet assemblies are located at the side of the flat vibrating diaphragm 1, are be arranged in parallel substantially with the flat vibrating diaphragm 1, the annular magnet
31 and the position of the wire annulus 21 are confronting coaxials.Position where the direction switching section 221 with adjacent two
Interstitial site between annular magnet 31 is corresponding.So, the circular direction of wire annulus 21 often switches once, wire annulus 21
Corresponding annular magnet 31 is different.Further, as shown in figure 5, two adjacent annular magnets 31 are between
The magnetic pole of gap location be identical.
The arrangement of the wire of voice coil loudspeaker voice coil conductor layer and the arrangement of magnetic circuit component are optimized the utility model, using multiple
Annular magnet and a plurality of wire annulus of series connection realize the raising of line length utilization rate.As shown in Figure 4,5, each wire annulus 21 is concentric
Arrangement, makes magnetic induction line more be collected both sides about 31 in annular magnet to neighbouring same pole, improves magnetic induction line and the flat institute of vibrating diaphragm 1
In the depth of parallelism of plane.So, the Zone Full of wire annulus 21 is substantially perpendicular in the direction of magnetic induction line, wire annulus 21
Electric current tangential direction all the time perpendicular to magnetic induction line direction.According to left hand rule, all line lengths are to producing on wire annulus
Loulun magnetism contributes, and substantially increases the utilization rate in magnetic field and effective line length of voice coil loudspeaker voice coil conductor layer.Only radius switches
The region of section 22 is parallel to the trend of magnetic induction line, and utilization rate is relatively low.The utilization rate of all line lengths of voice coil loudspeaker voice coil conductor layer 2 can
Bring up to more than 95%.The direction switching section 221 makes the direction of signal code invert 180 in the gap location of annular magnet 31
Degree, makes the direction for the Lorentz force that voice coil loudspeaker voice coil conductor layer 2 is subject to consistent.
Further, in the case where the efficiency that voice coil loudspeaker voice coil conductor layer 2 obtains Loulun magnetism is improved, flat vibrating diaphragm 1 is in vibration
Bigger amplitude can be produced, the acoustic pressure of sound-producing device and the volume of the sound produced is improved.
Quantity of the utility model not to the direction switching section is limited, the annular included according to magnet assemblies
The quantity of magnet, those skilled in the art can adjustment direction switching section accordingly quantity.More, the example in the quantity of annular magnet
In the case of 3-4 bars, the effect between relative magnetic pole can make magnetic field collect degree raising, improve the utilization rate in magnetic field.For
The Lorentz force direction for being subject to voice coil loudspeaker voice coil conductor layer 2 is consistent, on voice coil loudspeaker voice coil conductor layer 2 should be between adjacent annular magnet 31
Gap location sets corresponding direction switching section 221.
Alternatively, the spacing between the adjacent two wire annulus 21 can be more than 0.3mm.Adjacent wire circle
The electric current that keeping appropriately distance between ring can reduce in wire annulus influences each other, and improves the reliable of flat film sound-producing device
Property.Opposite, the spacing between wire annulus crosses conference and causes the space availability ratio on flat vibrating diaphragm to decline.Those skilled in the art
Spacing size between the wire annulus can be designed according to the performance requirement of actual product.
Alternatively, in some embodiments, the flat film sound-producing device can also include two groups of above-mentioned magnet assemblies.Figure
There was only one group of magnet assemblies in embodiment shown in 2-5, the magnet assemblies are located at the side of flat vibrating diaphragm 1.With two groups
In the flat film sound-producing device of magnet assemblies, the annular magnet 31 that two groups of magnet assemblies include is identical, two groups of magnet assemblies difference
Positioned at the both sides of the flat vibrating diaphragm 1.In this embodiment, voice coil loudspeaker voice coil conductor layer 2 results in stronger Lorentz force, flat to shake
The vibration amplitude that film 1 is produced is bigger, can produce bigger acoustic pressure.
Alternatively, the flat film sound-producing device can also include circular magnetic conductive board 5, as shown in Figure 2.The circular magnetic conductive board
5 magnetic field for adjusting, collecting the magnet assemblies, improves the utilization rate in magnetic field.The circular magnetic conductive board 5 can be fixed on institute
State in sound-producing device housing, the magnet assemblies are fixedly installed on the circular magnetic conductive board 5, can using be adhesively fixed wait just
Formula.There is sound transmission aperture 51, as shown in Fig. 2 the position of the sound transmission aperture 51 and the annular magnet 31 on the circular magnetic conductive board 5
Between interstitial site it is corresponding.The sound that the vibration of flat vibrating diaphragm 1 is produced can be by sound transmission aperture 51 to sound-producing device housing unofficial biography
Pass.There can also be outer convex rib position on the edge of the circular magnetic conductive board 5, the outer convex rib position is used to block circular magnetic conductive board 5
Connect and be fixed on the sound-producing device housing.
Alternatively, as shown in Fig. 3,6, the first signal tie point 11 and secondary signal can connect on the flat vibrating diaphragm 1
Contact 12, two tie points can be located at the edge of flat vibrating diaphragm 1.The first signal tie point 11 and secondary signal tie point 12
For electrically connecting with external electronic device, enable signals to be passed through in the voice coil loudspeaker voice coil conductor layer 2, form signal circuit.Radius is most
The big wire annulus 21 is electrically connected with the first signal tie point 11, as shown in figure 3, the minimum wire circle of radius
Ring 21 or wire positioned at the center of voice coil loudspeaker voice coil conductor layer 2 are electrically connected with the secondary signal tie point 12, as shown in Figure 6.
Alternatively, the flat vibrating diaphragm 1 is overall rounded, and the edge of the flat vibrating diaphragm 1 has ring stiffener 13.The ring
Shape reinforcement 13 is used to strengthen the overall structure of flat vibrating diaphragm 1, prevents flat vibrating diaphragm 1 from being deformed in vibration, assembling.The flat vibrating diaphragm 1
Edge can be fixed on the sound-producing device housing.In other embodiments, it can also be provided with the flat vibrating diaphragm
The reinforcement of other structures form, the utility model is not limited this.
Especially, stiffener rings 23 can be provided with the voice coil loudspeaker voice coil conductor layer 2, as shown in figure 3, the stiffener rings 23 are located at
Between the two wire annulus 21 connected by direction switching section 221, the stiffener rings 23 are by two around in opposite direction two
Wire annulus 21 is separated.There can be breach in the stiffener rings 23, so that the direction switching section 221 connects two from indentation, there
Bar wire annulus 21.23 pairs of the stiffener rings flat vibrating diaphragm 1 plays a part of support, reinforcing, improves the overall strong of flat vibrating diaphragm 1
Degree, prevents that itself generation is significantly deformed during flat diaphragm oscillations.
Alternatively, as shown in Fig. 2,7, the sound-producing device housing can include fore shell 31 and rear shell 32, and the circle is led
Magnetic sheet 5 is fixedly installed on shell 32 in the rear, rear acoustic aperture 321 can be provided with the rear shell 32, so that sound is therefrom spread out of.
As described in Figure 7, ledge structure 323 can be provided with the rear shell 32, the ledge structure is used for and the circular magnetic conductive board 5
On outer convex rib position be engaged, outer convex rib position can be fixed on the ledge structure 323, so that circular magnetic conductive board
5 are fixedly connected with the rear shell 32.As shown in Fig. 2 could be covered with tuning screen cloth 6, institute on the outer surface of the rear shell 32
State tuning screen cloth 6 and cover the rear acoustic aperture 321.The fore shell 31 is fastened on shell 32 in the rear, is constituted for carrying flat vibrating diaphragm 1
With the receiving space of magnet assemblies.The flat vibrating diaphragm 1 be able to can also be provided with the fore shell 31, the fore shell to be used for
The pore space structure spoken, the utility model is not limited this.
Alternatively, the voice coil loudspeaker voice coil conductor layer 2 is electrically connected with external equipment for convenience, forms signal circuit, the sounding
Two weld tabs 7 can be provided with device case, two weld tabs 7 connect with the first signal tie point 11 and secondary signal respectively
Contact 12 is electrically connected.The voice coil loudspeaker voice coil conductor layer 2 can be connected on weld tabs 7 by first, second signal tie point, when flat film hair
When acoustic device is assembled or is fixed in external electronic device, the weld tabs 7 can be electrically connected with external electronic device.As schemed
Shown in 7, there can be neck 322 on the rear shell 32, the weld tabs 7 can be fixedly installed in the neck.This practicality is new
Type is not intended to limit the fixed form of the weld tabs, in other embodiments, those skilled in the art can also using weld tabs with
The form such as shell integrated injection molding fixes the weld tabs afterwards.
Although some specific embodiments of the present utility model are described in detail by example, this area
It is to be understood by the skilled artisans that example above is merely to illustrate, rather than in order to limit scope of the present utility model.This
Field it is to be understood by the skilled artisans that can be in the case where not departing from scope and spirit of the present utility model, to above example
Modify.Scope of the present utility model is defined by the following claims.
Claims (10)
1. a kind of flat film sound-producing device, it is characterised in that including：
Flat vibrating diaphragm (1)；
Voice coil loudspeaker voice coil conductor layer (2), the voice coil loudspeaker voice coil conductor layer (2) is arranged on a side surface of the flat vibrating diaphragm (1), and the voice coil loudspeaker voice coil is led
Line layer (2) is laid by a plurality of wire annulus (21) being arranged concentrically and formed, and the radius of every wire annulus (21) is different, phase
Connected between two adjacent wire annulus (21) by radius switching section (22), wire annulus (21) is according to decreasing radius described in each bar
Order be sequentially connected in series, one section of direction switching section (221) is at least included in the radius switching section (22), in the voice coil loudspeaker voice coil wire
When layer (2) is passed through electric current, the direction switching section (221) inverts the sense of current in two adjacent wire annulus (21)；
Magnet assemblies, the magnet assemblies at least include two annular magnets (31) being arranged concentrically, the annular magnet (31)
Quantity suppose it is big by 1 to the quantity of switching section (221), the magnet assemblies be located at the flat vibrating diaphragm (1) side, the annular
Magnet (31) and the wire annulus (21) coaxially, position and two adjacent annulars where the direction switching section (221)
Interstitial site correspondence between magnet (31), the magnetic pole phase of the gap location of adjacent two annular magnets (31) between
Together；
Sound-producing device housing, the sound-producing device housing is configured for carrying the peaceful vibrating diaphragm (1) of the annular magnet (31).
2. flat film sound-producing device according to claim 1, it is characterised in that there are two sections on the voice coil loudspeaker voice coil conductor layer (2)
Direction switching section (221), the magnet assemblies include three annular magnets (31) being arranged concentrically.
3. flat film sound-producing device according to claim 1, it is characterised in that two adjacent wire annulus (21) it
Between spacing be more than 0.3mm.
4. flat film sound-producing device according to claim 1, it is characterised in that the flat film sound-producing device is included described in two groups
Magnet assemblies, magnet described in two groups is separately positioned on the both sides of the flat vibrating diaphragm (1).
5. flat film sound-producing device according to claim 1, it is characterised in that the flat film sound-producing device includes circular magnetic conduction
Plate (5), the circular magnetic conductive board (5) is fixed in the sound-producing device housing, and the magnet assemblies are fixedly installed on the circle
On shape magnetic conductive board (5), there is sound transmission aperture (51), the sound transmission aperture (51) and the annular magnet on the circular magnetic conductive board (5)
(31) interstitial site between is corresponding.
6. flat film sound-producing device according to claim 1, it is characterised in that the edge of the flat vibrating diaphragm (1) has first
Signal tie point (11) and secondary signal tie point (12), the maximum wire annulus (21) of radius connect with first signal
Contact (11) is electrically connected, the wire at the minimum wire annulus (21) of radius or voice coil loudspeaker voice coil conductor layer (2) center and described the
Binary signal tie point (12) is electrically connected.
7. flat film sound-producing device according to claim 1, it is characterised in that the flat vibrating diaphragm (1) is rounded, described put down is shaken
The edge of film (1) has ring stiffener (13), and the edge of the flat vibrating diaphragm (1) is fixed on the sound-producing device housing.
8. flat film sound-producing device according to claim 1, it is characterised in that be provided with the voice coil loudspeaker voice coil conductor layer (2) strong
Change ring (23), the stiffener rings (23) are located between two wire annulus (21) that the direction switching section (221) connects, by two
Wire annulus (21) is separated described in bar, has breach on the stiffener rings (23), and the direction switching section (221) is located at described lack
At mouthful.
9. flat film sound-producing device according to claim 5, it is characterised in that the sound-producing device housing includes fore shell (31)
With rear shell (32), the circular magnetic conductive board (5) is fixedly installed on shell (32) in the rear, and rear sound is provided with the rear shell (32)
Covered with tuning screen cloth (6) on hole (321), the outer surface of the rear shell (32), the tuning screen cloth (6) covers the rear acoustic aperture
(321), the fore shell (31) is fastened on shell (32) in the rear, and the flat vibrating diaphragm (1) is close to the fore shell (31).
10. flat film sound-producing device according to claim 6, it is characterised in that be provided with two on the sound-producing device housing
Branch weld tabs (7), two weld tabs (7) electrically connect with the first signal tie point (11) and secondary signal tie point (12) respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621459727.7U CN206413185U (en) | 2016-12-28 | 2016-12-28 | Flat film sound-producing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621459727.7U CN206413185U (en) | 2016-12-28 | 2016-12-28 | Flat film sound-producing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206413185U true CN206413185U (en) | 2017-08-15 |
Family
ID=59553112
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621459727.7U Withdrawn - After Issue CN206413185U (en) | 2016-12-28 | 2016-12-28 | Flat film sound-producing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206413185U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106792390A (en) * | 2016-12-28 | 2017-05-31 | 歌尔科技有限公司 | Flat film sound-producing device |
| WO2019184280A1 (en) * | 2018-03-26 | 2019-10-03 | Hong Xue | A micro planar speaker |
-
2016
- 2016-12-28 CN CN201621459727.7U patent/CN206413185U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106792390A (en) * | 2016-12-28 | 2017-05-31 | 歌尔科技有限公司 | Flat film sound-producing device |
| CN106792390B (en) * | 2016-12-28 | 2022-10-14 | 歌尔科技有限公司 | Flat membrane sound production device |
| WO2019184280A1 (en) * | 2018-03-26 | 2019-10-03 | Hong Xue | A micro planar speaker |
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