CN205491056U - Sound production constitutional unit and contain earphone of this unit - Google Patents
Sound production constitutional unit and contain earphone of this unit Download PDFInfo
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- CN205491056U CN205491056U CN201620293264.5U CN201620293264U CN205491056U CN 205491056 U CN205491056 U CN 205491056U CN 201620293264 U CN201620293264 U CN 201620293264U CN 205491056 U CN205491056 U CN 205491056U
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Abstract
The utility model discloses a sound production constitutional unit and contain this sound production constitutional unit's earphone relates to sound generating mechanism technical field. This sound production constitutional unit is including separately setting up vibrating diaphragm and piezoceramics, piezoceramics is used for producing mechanical deformation under the excitation of drive circuit's drive signal, and then drives vibrating diaphragm vibration sound production. Provide to adopt above -mentioned vocal constitutional unit's earphone simultaneously. The utility model provides a transmission structure that sound production constitutional unit will move indisputable earphone combines together with piezoceramics's material, keeps respective advantage and evades respective not enoughly, and simple structure, compactness divide the vibrating diaphragm to open with piezoceramics to set up, and electro - acoustic conversion efficiency is high, tone quality is good, and provides the design space for vibration mode, the optimization tone quality of adjusting the vibrating diaphragm.
Description
Technical Field
The utility model relates to a sound generating mechanism technical field especially relates to a sound production constitutional unit, contain this sound production constitutional unit's earphone.
Background
The earphone is an electric-force-sound-electric-sound converter, is multipurpose for devices such as mobile phones and walkmans, is generally separated from a media player and is linked by a plug. The earphone has the advantage of portability, and can listen to the sound independently without influencing other people. Can also isolate the sound of the surrounding environment, and is very helpful for people working in a recording studio or in a noise environment.
The earphones are classified according to the electroacoustic conversion method and can be classified into moving coils, static electricity, moving iron and the like.
A voice coil of the moving coil earphone is positioned in a permanent magnetic field and connected with a vibrating diaphragm, and the voice coil drives the vibrating diaphragm to sound under the drive of signal current.
The moving-iron earphone utilizes the electromagnet to generate an alternating magnetic field, the vibration part is an iron sheet suspended in front of the electromagnet, and the signal changes the magnetic field of the electromagnet when passing through the electromagnet, so that the iron sheet vibrates to produce sound.
Because the structure of moving-iron earphone is different from that of moving-coil earphone, compared with moving-coil earphone, the moving-iron earphone has smaller size, and is superior to moving-coil earphone in dynamic expression, instantaneous detailed expression and sound density of music. Meanwhile, the frequency response curve of the moving-iron earphone is more stable. The frequency response curve of the moving coil earphone can have some audible changes under different temperatures, humidities and using processes. The moving iron has good stability, so that the sound quality is more stable and reliable and is not easy to change. One important reason is that the moving iron unit is almost made of metal material, formed by a high precision mold, the vibrating diaphragm of the moving coil unit is generally combined with the coil by glue, and this process increases the difference between different individuals, so the electro-acoustic performance of the moving iron unit is much more stable than that of the moving coil unit. Traditionally, the vibrating diaphragm in the moving iron unit is a single-layer hard diaphragm, the resonant frequency of the hard diaphragm is high, a good high-frequency effect can be generated, and the medium-low frequency effect is not ideal.
Piezoelectric ceramic is mainly applied to the field of loudspeakers, most of piezoelectric loudspeakers utilize the principle that piezoelectric materials are subjected to sound production deformation under the action of an electric field, a piezoelectric moving element is arranged in the electric field formed by an audio current signal, the piezoelectric moving element is enabled to produce sound production displacement, therefore, an inverse voltage effect is generated, and finally, a metal vibrating diaphragm is driven to produce sound. Compared with the earphone using a moving coil and a moving iron, the piezoelectric earphone has the following advantages:
1. the piezoelectric loudspeaker does not need a magnet, so that no magnetic field can interfere and influence the surrounding circuit, and dust particles can not be absorbed from the surrounding space;
2. the piezoelectric loudspeaker has low power consumption and high electroacoustic conversion efficiency;
3. the piezoelectric speaker can be designed to be thin, and is superior in size and appearance.
Also, piezoelectric speakers have some disadvantages. The sound pressure frequency response curve generated by the traditional piezoelectric loudspeaker due to the structural design generally has severe fluctuation in the middle frequency band, thereby causing high harmonic distortion and poor tone quality.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a simple structure, compactness, sound quality are good and the high sound production constitutional unit of electro-acoustic conversion efficiency.
Another object of the present invention is to provide a sounding structure unit with convenient adjustment of frequency width, timbre and distortion.
The utility model discloses a still another purpose lies in providing a simple structure, compactness, good and the high earphone of electro-acoustic conversion efficiency of tone quality.
In order to achieve at least one of the above objects, in one aspect, the present invention adopts the following technical solutions:
a sound emitting construction unit comprising separately disposed:
vibrating diaphragm; and
the piezoelectric ceramic is used for generating mechanical deformation under the excitation of a driving signal of the driving circuit so as to drive the vibrating diaphragm to vibrate and sound;
the vibrating diaphragm (3) is driven by the piezoelectric ceramic (1) to produce sound.
Preferably, the piezoelectric ceramic is connected with the vibrating diaphragm through a connecting piece.
Preferably, the vibration isolator further comprises a shell, and the vibrating diaphragm and the piezoelectric ceramic are both arranged in the shell;
the piezoelectric ceramic is of a cantilever structure with one end fixed with the shell, or two opposite ends of the piezoelectric ceramic are both fixed with the shell, or the piezoelectric ceramic is supported in the shell through a support;
preferably, the diaphragm is directly bonded to the housing; or,
and a pressing ring is arranged in the shell, and the vibrating diaphragm is bonded on the pressing ring.
Preferably, the connecting piece is arranged at the free end part of the piezoelectric ceramic or between the piezoelectric ceramic and the two opposite surfaces of the vibrating diaphragm.
Preferably, a reinforcing plate is arranged on the vibrating diaphragm;
preferably, the piezoelectric ceramic is of a cantilever structure with one end fixed with the shell, one end of the connecting piece is connected with the vibrating diaphragm or the reinforcing plate, the other end of the connecting piece is provided with a groove, and the free end of the piezoelectric ceramic is inserted into the groove;
preferably, the connecting piece comprises a first guide sleeve and a second guide sleeve, the piezoelectric ceramic is arranged in the first guide sleeve in a penetrating manner, a connecting rod is arranged on the side wall of the first guide sleeve, and the free end of the connecting rod penetrates out of the second guide sleeve and is connected with the vibrating diaphragm or the reinforcing plate;
preferably, the vibrating diaphragm is made of a metal material, a high polymer material or a fiber resin composite material;
preferably, the reinforcing plate is made of a metal material, a polymer material or a fiber resin composite material.
Preferably, the bracket comprises a rotating shaft fixedly arranged in the shell and a fixing block rotatably sleeved on the rotating shaft, and the piezoelectric ceramic is arranged in the fixing block in a penetrating manner;
preferably, one end of the piezoelectric ceramic penetrates through the fixing block, and the other end of the piezoelectric ceramic is provided with a balancing weight.
Preferably, at least one side of the vibrating diaphragm is provided with a folding ring;
Preferably, the widths of the folding rings at different positions on the diaphragm are the same or different.
Preferably, a sound outlet is formed in one side, close to the diaphragm, of the shell;
preferably, the sound outlet corresponds to the center position of the diaphragm, or corresponds to the position of a corrugated rim of the diaphragm.
Preferably, a through hole is formed in one side, close to the piezoelectric ceramic, of the shell;
preferably, a net structure is arranged at the through hole.
On the other hand, the utility model adopts the following technical scheme:
the earphone comprises an earphone shell, wherein the sound production structure unit is arranged in the earphone shell.
The utility model has the advantages that:
the utility model provides a transmission structure that sound production constitutional unit will move indisputable earphone combines together with piezoceramics's material, remains respective advantage and avoids respective not enough, simple structure, compactness, separately sets up vibrating diaphragm and piezoceramics, and electro-acoustic conversion efficiency is high, tone quality is good, and provides the design space for the vibration mode of adjusting the vibrating diaphragm, optimization tone quality.
The utility model provides an earphone is owing to adopted foretell sound production constitutional unit, and simple structure, compactness, tone quality are good and electro-acoustic conversion efficiency is high, have very high market competition and wide market space.
Drawings
Fig. 1 is one of cross-sectional views of a sound-generating structure unit according to an embodiment of the present invention;
fig. 2 is a second cross-sectional view of the sound-generating structure unit according to the embodiment of the present invention;
fig. 3 is a third cross-sectional view of a sound-producing structure unit according to an embodiment of the present invention;
fig. 4 is a fourth cross-sectional view of the sound-producing structure unit according to the embodiment of the present invention;
fig. 5 is a schematic view of a structure of a diaphragm, a reinforcing plate, and a pressing ring according to an embodiment of the present invention;
fig. 6 is a second schematic view of a matching structure of the diaphragm, the reinforcing plate and the pressing ring according to the embodiment of the present invention;
fig. 7 to 9 are graphs showing simulation results of sensitivity curve characteristics of the sounding structural unit according to the embodiment of the present invention;
fig. 10 is a schematic structural diagram of the sound-generating structural unit applied to the earphone according to the embodiment of the present invention.
In the figure, 1, piezoelectric ceramics; 2. a connecting member; 21. a first guide sleeve; 22. a second guide sleeve; 23. a connecting rod; 3. vibrating diaphragm; 31. folding the ring; 4. a reinforcing plate; 5. pressing a ring; 6. a front housing; 61. a sound outlet; 7. a rear housing; 71. a through hole; 8. a dust screen; 91. a rotating shaft; 92. a fixed block; 93. a rotating bearing; 10. balancing weight; 11. an earphone housing; 111. the earphone sound outlet.
Detailed Description
The technical solution of the present invention is further explained by the following embodiments with reference to the accompanying drawings.
The first embodiment is as follows:
this embodiment provides a sound production constitutional unit, and it is including separately vibrating diaphragm and the piezoceramics that sets up, and piezoceramics produces mechanical deformation under drive circuit's drive signal excitation, and then drives the vibrating diaphragm vibration sound production.
The sound production constitutional unit that this embodiment provided combines together the transmission structure of moving iron earphone and piezoceramics's material, remains respective advantage and avoids respective not enough, and simple structure, compactness separately set up vibrating diaphragm and piezoceramics, and electro-acoustic conversion efficiency is high, tone quality is good, and provides the design space for adjusting the vibration mode of vibrating diaphragm, optimizing tone quality.
The following describes a specific structure of the sound generating structure unit with reference to the drawings.
Fig. 1 shows a sound-generating structural unit in a structural form, which includes a housing, and a diaphragm 3 and a piezoelectric ceramic 1 disposed in the housing.
The shell adopts a structure of butt joint of two half parts, and comprises a front shell 6 and a rear shell 7 which are butt jointed together, wherein the front shell 6 is a structural framework of a sounding structural unit, and the vibrating diaphragm 3 and the piezoelectric ceramic 1 are both arranged in the front shell 6. A sound outlet 61 is formed in the front shell 6, and the diaphragm 3 is disposed at a side close to the sound outlet 61, that is, the diaphragm 3 is located between the sound outlet 61 and the piezoelectric ceramic 1. The front case 6 and the rear case 7 are connected in an unlimited manner, for example, the rear case 7 may be bonded to the front case 6 by glue or by ultrasonic welding.
Be provided with clamping ring 5 in the preceding shell 6, vibrating diaphragm 3 bonds on clamping ring 5, and clamping ring 5 can set up in one side of vibrating diaphragm 3, also can all press ring 5 settings in the both sides of vibrating diaphragm 3. The assembly formed by the press ring 5 and the diaphragm 3 is then integrally bonded to the front housing 6. Of course, the diaphragm 3 may be directly fixed to the front housing 6 without providing the pressing ring 5, for example, the diaphragm 3 may be bonded to the front housing 6, thereby further simplifying the structure.
The diaphragm 3 is provided with a reinforcing plate 4, and the shape of the reinforcing plate 4 is not limited, and can be flat, vault or vault with patterns and the like. The reinforcing plate 4 is disposed on the side of the diaphragm 3 near the sound outlet 61. The diaphragm 3 and the reinforcing plate 4 may be made of a metal material such as a nickel-iron alloy, an aluminum alloy, a titanium alloy, stainless steel, a metal plating material, or a polymer material such as polyethylene naphthalate (PEN) fiber, polyether ketone (PEEK) fiber, or a fiber resin composite material such as FR4 glass fiber reinforced epoxy resin. The outer contours of the diaphragm 3, the reinforcing plate 4 and the pressing ring 5 can be set according to the product shape, such as rectangular, circular, oval, racetrack, and other shapes.
The piezoelectric ceramic 1 may be in a cantilever structure with one end fixed to the housing, for example, as shown in fig. 1, one end of the piezoelectric ceramic 1 is fixed to the front housing 6 and sandwiched between the front housing 6 and the rear housing 7, and the free end is connected or coupled to the diaphragm 3 through the connecting member 2. Specifically, one end of the connecting piece 2 is connected with the vibrating diaphragm 3, for example, is bonded with the vibrating diaphragm 3 through glue, the other end of the connecting piece 2 is provided with a groove, and the free end of the piezoelectric ceramic 1 is inserted into the groove and can be bonded with the connecting piece 2 through glue. The lead wires of the piezoelectric part are connected into the positive and negative electrodes of the piezoelectric ceramic 1. If the vibrating diaphragm 3 is of an annular structure, the connecting member 2 is connected with the reinforcing plate 4 on the vibrating diaphragm 3.
So, under drive circuit's drive signal excitation, piezoceramics 1 produces mechanical deformation, and then drives connecting piece 2 vibrations, and connecting piece 2 drives vibrating diaphragm 3 and stiffening plate 4 vibration sound production.
The specific structure of the piezoelectric ceramic 1 is not limited, and may be a single-layer, multilayer, or multi-piece composite structure.
Further, in order to enhance the vibration amplitude of the diaphragm 3 and enhance the medium-low frequency effect, the diaphragm 3 is provided with a corrugated rim 31, the corrugated rim 31 may be disposed on any side or any several sides of the diaphragm 3, and the corrugated rims 31 at different positions on the diaphragm 3 may have the same or different widths, for example, as shown in fig. 5, the corrugated rims 31 are disposed on adjacent first, second, and third sides of the diaphragm 3, wherein the widths of the second corrugated rims 31 are the same, and the widths of the corrugated rims 31 at the first and third sides are gradually reduced toward a direction away from the second side. For example, as shown in fig. 6, a ring of folding rings 31 is disposed on the periphery of the diaphragm 3, and the widths of the folding rings 31 are all the same. The frequency width, tone and distortion of the sounding structure unit can be adjusted by the design of the corrugated rim 31 of the diaphragm 3 and the selection of the material thickness of the reinforcing plate 4.
Of course, the connecting member 2 is not limited to be disposed at the free end of the piezoelectric ceramic 1, and may be disposed between the two surfaces of the piezoelectric ceramic 1 opposite to the diaphragm 3.
The structure of the connector 2 is not limited to the structure shown in fig. 1, and may be a structure including a first guide sleeve 21 and a second guide sleeve 22 as shown in fig. 2. The piezoelectric ceramic 1 is arranged in the first guide sleeve 21 in a penetrating manner, a connecting rod 23 is arranged on the side wall of the first guide sleeve 21, and the free end of the connecting rod 23 penetrates out of the second guide sleeve 22 and is connected with the vibrating diaphragm 3 or the reinforcing plate 4. The second guide sleeve 22 is fixed to the housing. The oscillation of the piezoelectric ceramic 1 is converted into the reciprocating vibration of the diaphragm 3 and the reinforcing plate 4 by the cooperation of the first guide sleeve 21 and the second guide sleeve 22. The first guide sleeve 21 and the second guide sleeve 22 are preferably linear bearings.
Further, in the embodiment shown in fig. 2, a through hole 71 is further formed in the rear shell 7, the through hole 71 is disposed opposite to the piezoelectric ceramic 1, and the arrangement of the through hole 71 can reduce the influence of the back cavity pressure change generated by vibration on the diaphragm 3. A mesh structure, preferably a dust screen 8, is provided on the through-holes 71 to reduce the entry of dust.
The position of the sound outlet 61 is not limited, and preferably, there are two positions, one is as shown in fig. 1, the sound outlet 61 corresponds to the position of the edge 31, and the other is as shown in fig. 2, the sound outlet 61 corresponds to the center position of the diaphragm 3.
The arrangement of the piezoelectric ceramic 1 in the housing is not limited to the cantilever structure shown in fig. 1 and 2, but may be such that, as shown in fig. 3, both ends of the piezoelectric ceramic 1 are fixed to the front housing 6 and sandwiched between the front housing 6 and the rear housing 7. The connecting piece 2 is arranged between the vibrating diaphragm 3 and the piezoelectric ceramic 1, one end of the connecting piece is bonded with the vibrating diaphragm 3 or the reinforcing plate 4 through glue, and the other end of the connecting piece is bonded with the piezoelectric ceramic 1. The piezoelectric ceramic 1 is driven by a driving circuit to generate mechanical deformation, and the connecting piece 2 drives the vibrating diaphragm 3 and the reinforcing plate 4 to vibrate and sound. Of course, the arrangement of the connecting member 2 is not limited to the form shown in fig. 3, and the vibration transmission effect can be achieved, for example, as shown in fig. 1 and 2.
The arrangement of the piezoceramic 1 in the housing can also be in suspended mode, i.e. supported in the housing by a support. For example, as shown in fig. 4, the bracket includes a rotating shaft 91 fixedly disposed in the housing and a fixing block 92 rotatably sleeved on the rotating shaft 91, and preferably, a rotating bearing 93 is disposed between the fixing block 92 and the rotating shaft 91. The piezoelectric ceramic 1 is inserted into the fixing block 92, so that the piezoelectric ceramic 1 can be suspended in the housing through the bracket. The connecting piece 2 is arranged between the vibrating diaphragm 3 and the piezoelectric ceramic 4, one end of the connecting piece is bonded with the vibrating diaphragm 3 or the reinforcing plate 4 through glue, and the other end of the connecting piece is bonded with the piezoelectric ceramic 1. Further, one end of the piezoelectric ceramic 1 penetrates out of the fixing block 92, the penetrating part is connected with the connecting piece 2, the balance weight 10 is arranged at the other end, and the resonance frequency of the system is adjusted through the elasticity of the support and the weight of the balance weight 10. Specifically, after piezoelectric ceramic 1 lets in the signal of telecommunication, piezoelectric ceramic 1 produces bending deformation under drive circuit's drive and drives counter weight 10 reciprocal swing, and then drives the connecting piece 2 reciprocal vibration of the other end, and connecting piece 2 drives vibrating diaphragm 3 and stiffening plate 4 vibration sound production. Of course, the arrangement of the connecting member 2 is not limited to the form shown in fig. 4, and the vibration transmission effect can be achieved, for example, as shown in fig. 1 and 2.
Next, a sensitivity curve characteristic simulation is performed by taking the sounding structural unit shown in fig. 1 as an example, the simulation results are shown in fig. 7 to fig. 9, fig. 7 is a typical sensitivity curve obtained by modeling and simulation according to the embodiment of fig. 1, in the curve, a 2.5kHz spike, i.e., a point a in the graph, is related to the compliance of the piezoelectric, the diaphragm and the reinforcing plate, and a point 7.5kHz spike, i.e., a point B in the graph, is related to the front cavity design. The front cavity, i.e. the cavity enclosed by the diaphragm 3 and the front shell 6, is indicated by D in fig. 1.
FIG. 8 shows the simulation results of changing the piezoelectric compliance, wherein the curve c1 shows the simulation results of the piezoelectric compliance at 8 μm/N, the curve c2 shows the simulation results of the piezoelectric compliance at 6 μm/N, and the curve c3 shows the simulation results of the piezoelectric compliance at 4 μm/N. As can be seen from fig. 8, the sensitivity curve 2.5kHz spike shifts to a high frequency (i.e., arrow direction) as the piezo compliance decreases.
FIG. 9 is a graph of the effect of varying the antechamber volume on the sensitivity curve, where curve c4 is the antechamber volume of 0.8cm3Simulation results in time, curve c5 is the anterior chamber volume 0.6cm3Simulation results in time, curve c6 is the anterior chamber volume 0.4cm3And (5) time simulation results. As can be seen in fig. 9, the 7.5Hz spike of the sensitivity curve shifts to higher frequencies (i.e., in the direction of the arrow) as the anterior chamber decreases.
As can be seen from the simulation results, the generating structure unit provided in this embodiment has a higher electroacoustic conversion efficiency, can obtain a better sound quality, and has a design space in terms of adjusting the vibration mode of the diaphragm and optimizing the sound quality.
The sound production structure unit described in this embodiment can be widely applied to devices such as speakers and receivers.
Example two:
the embodiment provides a method for driving sounding, which comprises the following steps:
providing a vibrating diaphragm and piezoelectric ceramics which are separately arranged;
providing a driving signal to drive the piezoelectric ceramic to generate mechanical deformation;
the vibrating diaphragm is driven by the piezoelectric ceramic to produce sound.
Preferably, the piezoelectric ceramic is connected or coupled with the diaphragm through a connecting piece.
The driving sound production method provided by the embodiment drives the vibrating diaphragm separately arranged from the piezoelectric ceramic to produce sound, has a simple and compact structure, high electroacoustic conversion efficiency and good sound quality, and provides a design space for adjusting the vibration mode of the vibrating diaphragm and optimizing the sound quality.
Example three:
the embodiment provides an earphone, which comprises an earphone shell and a sound production structure unit arranged in the earphone shell. The earphone provided by the embodiment adopts the sounding structure unit, has simple and compact structure, good tone quality and high electroacoustic conversion efficiency, and has high market competitiveness and wide market space.
Fig. 10 shows an embodiment of applying the sound generating structure unit shown in fig. 1 to a headset, as shown in the figure, the sound generating structure unit is fixedly bonded to the headset housing 11, a headset sound outlet 111 is formed in the headset housing 11, and a sealed connection is formed between the headset sound outlet 111 and the sound outlet 61 of the sound generating structure unit.
The technical principle of the present invention is described above with reference to specific embodiments. The description is made for the purpose of illustrating the principles of the invention and should not be construed in any way as limiting the scope of the invention. Based on the explanations herein, those skilled in the art will be able to conceive of other embodiments of the present invention without any inventive effort, which would fall within the scope of the present invention.
Claims (9)
1. A sound emitting construction unit comprising separately disposed:
a diaphragm (3); and
the piezoelectric ceramic (1) is used for generating mechanical deformation under the excitation of a driving signal of a driving circuit so as to drive the vibrating diaphragm (3) to vibrate;
the vibrating diaphragm (3) is driven by the piezoelectric ceramic (1) to produce sound.
2. Sound-emitting construction unit according to claim 1, characterized in that the piezoelectric ceramic (1) is connected to the diaphragm (3) by means of a connecting piece (2).
3. The sound-emitting structural unit according to claim 2, further comprising a housing, wherein the diaphragm (3) and the piezoelectric ceramic (1) are both disposed in the housing;
the piezoelectric ceramic (1) is of a cantilever structure with one end fixed with the shell, or two opposite ends of the piezoelectric ceramic (1) are fixed with the shell, or the piezoelectric ceramic (1) is supported in the shell through a support;
preferably, the vibrating diaphragm (3) is directly bonded to the shell; or,
a pressing ring (5) is arranged in the shell, and the vibrating diaphragm (3) is bonded to the pressing ring.
4. A sound-emitting construction unit according to claim 3, characterized in that the connecting piece (2) is arranged at a free end of the piezoceramic (1) or between two opposite faces of the piezoceramic (1) and diaphragm (3).
5. The sound-emitting structural unit according to claim 3 or 4, characterized in that a stiffening plate (4) is provided on the diaphragm (3);
preferably, the piezoelectric ceramic (1) is of a cantilever structure with one end fixed with the shell, one end of the connecting piece (2) is connected with the vibrating diaphragm (3) or the reinforcing plate (4), the other end of the connecting piece is provided with a groove, and the free end of the piezoelectric ceramic (1) is inserted into the groove;
preferably, the connecting piece (2) comprises a first guide sleeve (21) and a second guide sleeve (22), the piezoelectric ceramic (1) is arranged in the first guide sleeve (21) in a penetrating manner, a connecting rod (23) is arranged on the side wall of the first guide sleeve (21), and the free end of the connecting rod (23) penetrates out of the second guide sleeve (22) and is connected with the vibrating diaphragm (3) or the reinforcing plate (4);
preferably, the vibrating diaphragm (3) is made of a metal material, a high polymer material or a fiber resin composite material;
preferably, the reinforcing plate (4) is made of a metal material, a polymer material or a fiber resin composite material.
6. The sounding structural unit according to claim 3 or 4, wherein the support comprises a rotating shaft (91) fixedly arranged in the housing and a fixing block (92) rotatably sleeved on the rotating shaft (91), and the piezoelectric ceramic (1) is arranged in the fixing block (92) in a penetrating manner;
Preferably, one end of the piezoelectric ceramic (1) penetrates through the fixing block (92), and the other end of the piezoelectric ceramic is provided with a balancing weight (10).
7. Sound-emitting construction unit according to any one of claims 1 to 4, characterised in that at least one side of the diaphragm (3) is provided with a fold (31);
preferably, the widths of the folding rings (31) at different positions on the diaphragm (3) are the same or different.
8. Sound-emitting construction unit according to claim 3 or 4, characterised in that the housing is provided with sound-emitting openings (61) on the side close to the diaphragm (3);
preferably, the sound outlet (61) corresponds to the center position of the diaphragm (3), or corresponds to the position of a corrugated rim (31) of the diaphragm (3);
preferably, a through hole (71) is formed in one side, close to the piezoelectric ceramic (1), of the shell;
preferably, a net structure is arranged at the through hole (71).
9. A headset comprising a headset housing (11), characterized in that a sound emitting construction unit according to any of claims 1-8 is arranged in the headset housing (11).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620293264.5U CN205491056U (en) | 2016-04-08 | 2016-04-08 | Sound production constitutional unit and contain earphone of this unit |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620293264.5U CN205491056U (en) | 2016-04-08 | 2016-04-08 | Sound production constitutional unit and contain earphone of this unit |
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| CN205491056U true CN205491056U (en) | 2016-08-17 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105721996A (en) * | 2016-04-08 | 2016-06-29 | 深圳精拓创新科技有限公司 | Sound production structure unit, earphone including sound production structure unit and sound production driving method |
| CN108322850A (en) * | 2018-01-24 | 2018-07-24 | 上海摩软通讯技术有限公司 | Audio reproducing apparatus |
| CN109996147A (en) * | 2017-12-31 | 2019-07-09 | 宁波升亚电子有限公司 | Low frequency generating device and low frequency generating apparatus and its application |
| CN114513729A (en) * | 2022-01-07 | 2022-05-17 | 华为技术有限公司 | Electronic device and acoustic transducer |
| WO2023051382A1 (en) * | 2021-09-29 | 2023-04-06 | 华为技术有限公司 | Headphones |
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| CN114513729A (en) * | 2022-01-07 | 2022-05-17 | 华为技术有限公司 | Electronic device and acoustic transducer |
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| CN116996821A (en) * | 2023-09-26 | 2023-11-03 | 地球山(苏州)微电子科技有限公司 | Pixel sounding unit and digital loudspeaker |
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