CN204598313U - sound-producing device - Google Patents
sound-producing device Download PDFInfo
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- CN204598313U CN204598313U CN201520333934.7U CN201520333934U CN204598313U CN 204598313 U CN204598313 U CN 204598313U CN 201520333934 U CN201520333934 U CN 201520333934U CN 204598313 U CN204598313 U CN 204598313U
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- protecgulum
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- producing device
- piezo buzzer
- acoustical generator
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Abstract
The utility model relates to a kind of sound-producing device and electronic equipment.This sound-producing device comprises acoustical generator, piezo buzzer, protecgulum, the first incoming line and the second incoming line, it is characterized in that, protecgulum is attached to the front of acoustical generator, piezo buzzer is attached on protecgulum, first incoming line provides the first input signal to acoustical generator, and the second incoming line provides the second input signal being different from the first input signal to piezo buzzer.A technical problem to be solved in the utility model how to provide a kind of new sound-producing device.A purposes of utility model is for media device.
Description
Technical field
The utility model relates to sound-producing device technical field, and more specifically, the utility model relates to a kind of sound-producing device and electronic equipment.
Background technology
Sound-producing device to convert the electrical signal to beeper.Sound-producing device such as comprises receiver.Such as, moving coil receiver and loud speaker can be called receiver.Sound-producing device is widely used in media device.Such as, media device such as comprises mobile phone and earphone etc. thereof.
High frequency performance is the important performance of of sound-producing device.The frequency response curve of general moving coil receiver there will be quick decline in the interval of 6kHz to 9kHz.The frequency response curve of general loud speaker also can decline after tens KHz.That is, the frequency response curve of sound-producing device there will be cut-off frequency at high frequency.Along with the development of technology, people are more and more higher for sound-producing device high-frequency cut-off frequency requirement.But due to the restriction of the materials and process of sound-producing device, the especially restriction of the materials and process of moving coil receiver, its high-frequency cut-off frequency is difficult to get a promotion.
Along with the extensive use of 4G communication, require the sound-producing device with ultrabroad band.Such as, in some cases, the high-frequency cut-off frequency of sound-producing device is needed to reach more than 16kHz.But such as, common moving coil receiver has been difficult to reach this requirement.
Utility model content
A technical problem to be solved of the present utility model how to provide a kind of new sound-producing device.
According to an embodiment of the present utility model, provide a kind of sound-producing device, comprise acoustical generator, piezo buzzer, protecgulum, the first incoming line and the second incoming line, wherein, protecgulum is attached to the front of acoustical generator, piezo buzzer is attached on protecgulum, and the first incoming line provides the first input signal to acoustical generator, and the second incoming line provides the second input signal being different from the first input signal to piezo buzzer.
Preferably, the first incoming line comprises the first pad be positioned on acoustical generator, for transmitting the first input signal; Second incoming line comprises electrical connector and is positioned at the second pad on protecgulum, and wherein, piezo buzzer is connected to the second pad, and electrical connector is connected with the second pad, to transmit the second input signal.
Preferably, electrical connector is POGO PIN type connector; Acoustical generator comprises through hole, and POGOPIN type connector is connected to the second pad through described through hole.
Preferably, described sound-producing device is moving coil receiver, and described acoustical generator is the moving-coil audible segment of moving coil receiver.
Preferably, the resonance frequency of described piezo buzzer is less than or equal to the high-frequency cut-off frequency of described acoustical generator.
Preferably, piezo buzzer is annular; Protecgulum is annular, and forms Helmholtz resonator by acoustical generator and protecgulum.
Preferably, the annular opening size of described protecgulum is configured such that the resonance frequency of described Helmholtz resonator is identical with the resonance frequency of piezo buzzer.
Preferably, between piezo buzzer and protecgulum, there is gap.
Preferably, piezo buzzer is close on protecgulum.
Preferably, piezo buzzer is positioned at the inner side of protecgulum.
A technique effect of the present utility model is, is strengthened the compensation effect of the high frequency characteristics to acoustical generator by the interaction of piezo buzzer and protecgulum.
Designer of the present utility model finds, in the prior art, is not compensated the high frequency characteristics of acoustical generator by piezo buzzer, and does not recognize and can strengthen compensation effect by the interaction of piezo buzzer and protecgulum.Therefore, the technical assignment that the utility model will realize or technical problem to be solved are that those skilled in the art never expect or do not anticipate, therefore the utility model is a kind of new technical scheme.
In addition, those skilled in the art are to be understood that, although there is many problems in prior art, but, the technical scheme of each embodiment of the present utility model or claim can only be improved in one or several, and need not solve the whole technical problems listed in prior art or in background technology simultaneously.It will be appreciated by those skilled in the art that should as the restriction for this claim for the content do not mentioned in a claim.
By referring to the detailed description of accompanying drawing to exemplary embodiment of the present utility model, further feature of the present utility model and advantage thereof will become clear.
Accompanying drawing explanation
What form a part for specification drawings describes embodiment of the present utility model, and together with the description for explaining principle of the present utility model.
Fig. 1 is the isometric exploded view of observing from side-lower of the sound-producing device according to an embodiment of the present utility model.
Fig. 2 is the isometric exploded view from side top view of the sound-producing device according to an embodiment of the present utility model.
Fig. 3 is the top view of the sound-producing device according to an embodiment of the present utility model.
Fig. 4 is the decomposition view observed from the side of the sound-producing device according to an embodiment of the present utility model.
Fig. 5 is the end view of the sound-producing device according to an embodiment of the present utility model.
Fig. 6 is Pogo Pin type connector according to the sound-producing device of an embodiment of the present utility model and the schematic diagram be connected between piezo buzzer (eliminating acoustical generator).
Fig. 7 is Pogo Pin type connector according to the sound-producing device of an embodiment of the present utility model and another schematic diagram (eliminating acoustical generator) be connected between piezo buzzer.
Fig. 8 is the view observed from protecgulum side of the sound-producing device according to an embodiment of the present utility model.
Fig. 9 is the sectional view of the sound-producing device in Fig. 8 along A-A ' line.
Figure 10 is the sectional view of the sound-producing device in Fig. 8 along B-B ' line.
Figure 11 is the flow chart of the method for the manufacture of sound-producing device according to another embodiment of the present utility model.
Figure 12 shows the model of Helmholtz resonator.
Embodiment
Various exemplary embodiment of the present utility model is described in detail now with reference to accompanying drawing.It should be noted that: unless specifically stated otherwise, otherwise positioned opposite, the numerical expression of the parts of setting forth in these embodiments and step and numerical value do not limit scope of the present utility model.
Illustrative to the description only actually of at least one exemplary embodiment below, never as any restriction to the utility model and application or use.
The technology and equipment known for person of ordinary skill in the relevant may not discuss in detail, but in the appropriate case, described technology and equipment should be regarded as a part for specification.
In all examples with discussing shown here, any occurrence should be construed as merely exemplary, instead of as restriction.Therefore, other example of exemplary embodiment can have different values.
It should be noted that: represent similar terms in similar label and letter accompanying drawing below, therefore, once be defined in an a certain Xiang Yi accompanying drawing, then do not need to be further discussed it in accompanying drawing subsequently.
Specification is according to embodiment of the present utility model and example with reference to the accompanying drawings.
Fig. 1 shows the isometric exploded view of observing from side-lower of the sound-producing device 100 according to an embodiment of the present utility model.
As shown in Figure 1, sound-producing device 100 comprises acoustical generator 210, piezo buzzer 220 and protecgulum 230.
Protecgulum 230 can be attached to the front of acoustical generator 210.Piezo buzzer 220 is attached on protecgulum 230.
Such as, described sound-producing device 100 is moving coil receivers.In this case, described acoustical generator 210 is moving-coil audible segments of moving coil receiver.
It will be understood by those skilled in the art that piezoelectric buzzer 220 is a kind of sounding bodies using piezoelectric ceramic as electroacoustic transducer.This device piezoelectric ceramic thin sheet is pasted onto the transducing that sheet metal is formed to change part, i.e. piezoelectricity singing piece.Piezoelectric buzzer does not operationally produce radio noise, and has the features such as low-power consumption.
The resonance frequency of piezoelectric buzzer can between 1kHz to 40kHz.Its volume is little, is convenient to install.Piezoelectric buzzer volume after resonance frequency and resonance frequency is very large.A piezoelectric buzzer is increased in sound-producing device.The suitable resonance frequency of Selective Pressure electric buzzer, and the acoustical generator in piezoelectric buzzer and sound-producing device is worked simultaneously, this can compensate the high frequency response characteristic of sound-producing device.The superposition frequency response of the sound-producing device after compensation can reach 20kHz, even reaches 40kHz.
In the utility model, protecgulum is set in sound-producing device.On the one hand, protecgulum may be used for protecting sound-producing device.On the other hand, in the utility model, piezo buzzer and protecgulum are attached together.Due to the interaction of piezo buzzer and protecgulum, frequency compensated effect can be improved further.
Such as, gap can be there is between piezo buzzer and protecgulum, or, piezo buzzer can be made to be close on protecgulum.As long as operationally piezo buzzer and protecgulum can produce interact just passable.
In one example in which, piezo buzzer is positioned at the inner side of protecgulum, to protect piezoelectric buzzer by protecgulum.
Preferably, the material of protecgulum is plastics or other insulating material.Protecgulum can insulate with piezoelectric buzzer.
In one example in which, sound-producing device 100 also comprises the first incoming line and the second incoming line.First incoming line is used for providing the first input signal to acoustical generator.Second incoming line is used for providing to piezo buzzer the second input signal being different from the first input signal.Such as, the input voltage of acoustical generator and piezoelectric buzzer is different.By arranging the first incoming line and the second incoming line respectively, make acoustical generator and piezoelectric buzzer can be operated in optimum state simultaneously.
Such as, the second incoming line can comprise Pogo Pin type connector 110.
Such as, piezo buzzer can be annular.It will be appreciated by those skilled in the art that annular refers to the shape of all round closure, middle opening.Such as, annular comprises annular, side's annular etc.In addition, piezo buzzer also can be a part for annular.
Such as, protecgulum also can be annular.Helmholtz resonator can be formed in this case by acoustical generator 210 and protecgulum 230 (and the piezoelectric buzzer 220 be attached on protecgulum).The annular opening size of described protecgulum can be set, make the resonance frequency of described Helmholtz resonator identical with the resonance frequency of piezo buzzer, thus make piezoelectric buzzer near resonance frequency, obtain higher sound pressure level.
Such as, can, by arranging the annular opening size of protecgulum, the resonance frequency of described Helmholtz resonator be made to be greater than 10kHz; Preferably, 16kHz is greater than; More preferably, 20kHz is greater than.
After having designed at sound-producing device, the space between protecgulum and acoustical generator has just secured substantially, and therefore, the size of adjustment protecgulum is the mode of the resonance frequency of the Helmholtz resonator that a kind of adjustment protecgulum and acoustical generator are eaily formed.How to determine that the resonance frequency of Helmholtz resonator is well known by persons skilled in the art.Below, formula annular protecgulum being calculated to resonance frequency is only exemplarily described:
Wherein, f
0be the resonance frequency of Helmholtz resonator, S is the phonate hole area of protecgulum, and d is phonate hole diameter, and l is phonate hole length, and V is volume of air, and C is the velocity of sound.The model of Helmholtz resonator as shown in figure 12.The model of Helmholtz resonator and computing formula are known in the art, and itself are not that the utility model is paid close attention to, therefore are not here explained in further detail them.
Fig. 2 is the isometric exploded view from side top view of the sound-producing device according to an embodiment of the present utility model.
As shown in Figure 2, sound-producing device 100 comprises acoustical generator 210, piezo buzzer 220 and protecgulum 230.
Pogo Pin type connector 110 in second incoming line is also shown in Fig. 2.
Injection moulding two Pogo Pin connectors can be formed in acoustical generator.Or, also can use other connected modes.Such as, spring or shell fragment etc. can be used to connect.Or, flexible PCB can be used to connect.
As shown in Figure 2, protecgulum also has the second pad 310.Piezo buzzer has the line 320 for being connected to the second pad.POGO PIN type connector is connected with the second pad, to transmit the second input signal.Such as, POGO PIN type connector is that injection moulding is formed.Such as, position that can be corresponding with POGO PIN type connector on acoustical generator forms through hole, so that POGO PIN type connector is connected to the second pad through described through hole.
Fig. 3 is the top view of the sound-producing device according to an embodiment of the present utility model.
Fig. 3 shows the view of the sound-producing device 100 observed from acoustical generator side.As shown in Figure 3, sound-producing device 100 comprises POGO PIN connector 110 and the first pad 120.Such as, the first pad 120 belongs to a part for the first incoming line, and it is for transmitting the first input signal.By the first pad, input signal can be provided to acoustical generator 210, make acoustical generator 210 sounding.In actual applications, the first pad 120 also can be other electric connection structures, such as shell fragment etc.
Fig. 4 shows the decomposition view observed from the side of the sound-producing device according to an embodiment of the present utility model.
As shown in Figure 4, sound-producing device comprises POGO PIN connector 110, acoustical generator 210, piezo buzzer 220 and protecgulum 230.Such as, piezo buzzer 220 arranging lead-in wire, for being connected to the pad on protecgulum 230, and receiving input signal by POGO PIN.
Fig. 5 is the end view of the sound-producing device according to an embodiment of the present utility model.The POGO PIN connector 110 of sound-producing device 100, acoustical generator 210 and protecgulum 230 have been shown in Fig. 5.Piezo buzzer is attached to inside protecgulum 230, therefore not shown in Figure 5.
Fig. 6 shows the schematic diagram according to the connection between the Pogo Pin type connector of the sound-producing device of an embodiment of the present utility model and piezo buzzer.For convenience of description, acoustical generator is eliminated at Fig. 6.Fig. 6 shows the view observed from oblique upper.As shown in Figure 6, protecgulum 230 arranges the second pad 310.Second pad 310 can be injection mo(u)lding.POGO PIN type connector 110 is connected to the second pad 310.POGO PIN type connector 110 also can be injection mo(u)lding.Piezo buzzer 220 is connected to the second pad 310 by lead-in wire 320.
Fig. 7 is Pogo Pin type connector according to the sound-producing device of an embodiment of the present utility model and another schematic diagram be connected between piezo buzzer.For convenience of description, acoustical generator is eliminated at Fig. 7.Fig. 7 show from directly over observe view.As shown in Figure 7, protecgulum 230 arranges the second pad 310.Second pad 310 can be injection mo(u)lding.POGO PIN type connector 110 is connected to the second pad 310.POGO PIN type connector 110 also can be injection mo(u)lding.Piezo buzzer 220 is connected to the second pad 310 by lead-in wire 320.
Fig. 8 is the view observed from protecgulum side of the sound-producing device according to an embodiment of the present utility model.
Fig. 9 is the sectional view of the sound-producing device in Fig. 8 along A-A ' line.As shown in Figure 9, sound-producing device 100 comprises acoustical generator 210, piezo buzzer 220 and protecgulum 230.Because acoustical generator 210 itself is not the content that the present invention pays close attention to, therefore, here it is not described in detail.In the example of figure 9, piezo buzzer 220 is attached to the inner side of protecgulum 230.Alternatively, piezo buzzer 220 also can be attached to the outside of protecgulum 230.
Figure 10 is the sectional view of the sound-producing device in Fig. 8 along B-B ' line.Acoustical generator 210 and protecgulum 230 have been shown in Figure 10.POGO PIN type connector 110 contacts with the pad (not shown) on protecgulum 230 through acoustical generator 210.
Figure 11 is the flow chart of the method for the manufacture of sound-producing device according to another embodiment of the present utility model.Such as, this sound-producing device comprises acoustical generator, piezo buzzer and protecgulum, and acoustical generator and protecgulum form Helmholtz resonator.
As shown in figure 11, in step S1100, piezo buzzer is attached on protecgulum.Such as, piezo buzzer is annular, and protecgulum is also annular.Such as, the annular opening of piezo buzzer and the annular opening of protecgulum overlapping at least partly.
In step S1200, the annular opening size of adjustment protecgulum, to adjust the resonance frequency of Helmholtz resonator.Here, the annular opening of protecgulum can refer to openings of sizes when observing from protecgulum side direction acoustical generator.Such as, the annular opening size of protecgulum can be the size of the opening that piezo buzzer and protecgulum are formed jointly.Alternatively, if the annular opening of piezo buzzer is less than the annular opening of protecgulum, also can adjust the annular opening size of piezo buzzer simultaneously.Alternatively, the annular opening size of protecgulum can be adjusted by the relative position adjusting protecgulum and piezo buzzer.
In step S1300, protecgulum is attached to the front of acoustical generator.
Although be described in detail specific embodiments more of the present utility model by example, it should be appreciated by those skilled in the art, above example is only to be described, instead of in order to limit scope of the present utility model.It should be appreciated by those skilled in the art, when not departing from scope and spirit of the present utility model, above embodiment can be modified.Scope of the present utility model is limited by claims.
Claims (10)
1. a sound-producing device, comprise acoustical generator, piezo buzzer, protecgulum, the first incoming line and the second incoming line, it is characterized in that, protecgulum is attached to the front of acoustical generator, piezo buzzer is attached on protecgulum, first incoming line provides the first input signal to acoustical generator, and the second incoming line provides the second input signal being different from the first input signal to piezo buzzer.
2. sound-producing device according to claim 1, is characterized in that, the first incoming line comprises the first pad be positioned on acoustical generator, for transmitting the first input signal; Second incoming line comprises electrical connector and is positioned at the second pad on protecgulum, and wherein, piezo buzzer is connected to the second pad, and electrical connector is connected with the second pad, to transmit the second input signal.
3. sound-producing device according to claim 2, is characterized in that, electrical connector is POGOPIN type connector; Acoustical generator comprises through hole, and POGO PIN type connector is connected to the second pad through described through hole.
4. sound-producing device according to claim 1, is characterized in that, described sound-producing device is moving coil receiver, and described acoustical generator is the moving-coil audible segment of moving coil receiver.
5. sound-producing device according to claim 1, is characterized in that, the resonance frequency of described piezo buzzer is less than or equal to the high-frequency cut-off frequency of described acoustical generator.
6. sound-producing device according to claim 5, is characterized in that, piezo buzzer is annular, and protecgulum is annular, and forms Helmholtz resonator by acoustical generator and protecgulum.
7. sound-producing device according to claim 6, is characterized in that, the annular opening size of described protecgulum is configured such that the resonance frequency of described Helmholtz resonator is identical with the resonance frequency of piezo buzzer.
8. according to the sound-producing device in claim 1-7 described in any one, it is characterized in that, between piezo buzzer and protecgulum, there is gap.
9. according to the sound-producing device in claim 1-7 described in any one, it is characterized in that, piezo buzzer is close on protecgulum.
10. according to the sound-producing device in claim 1-7 described in any one, it is characterized in that, piezo buzzer is positioned at the inner side of protecgulum.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520333934.7U CN204598313U (en) | 2015-05-21 | 2015-05-21 | sound-producing device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520333934.7U CN204598313U (en) | 2015-05-21 | 2015-05-21 | sound-producing device |
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| Publication Number | Publication Date |
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| CN204598313U true CN204598313U (en) | 2015-08-26 |
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| CN201520333934.7U Active CN204598313U (en) | 2015-05-21 | 2015-05-21 | sound-producing device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016184061A1 (en) * | 2015-05-21 | 2016-11-24 | 歌尔声学股份有限公司 | Sound generating apparatus, electronic device and manufacturing method therefor |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016184061A1 (en) * | 2015-05-21 | 2016-11-24 | 歌尔声学股份有限公司 | Sound generating apparatus, electronic device and manufacturing method therefor |
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Address after: 261031 Dongfang Road, Weifang high tech Development Zone, Shandong, China, No. 268 Patentee after: Goertek Inc. Address before: 261031 Dongfang Road, Weifang high tech Development Zone, Shandong, China, No. 268 Patentee before: Goertek Inc. |