CN202310093U - Jagged array type piezoelectric loudspeaker set - Google Patents
Jagged array type piezoelectric loudspeaker set Download PDFInfo
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- CN202310093U CN202310093U CN2011203706564U CN201120370656U CN202310093U CN 202310093 U CN202310093 U CN 202310093U CN 2011203706564 U CN2011203706564 U CN 2011203706564U CN 201120370656 U CN201120370656 U CN 201120370656U CN 202310093 U CN202310093 U CN 202310093U
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- 239000000758 substrate Substances 0.000 claims abstract description 15
- 238000009434 installation Methods 0.000 claims description 3
- 238000003466 welding Methods 0.000 claims description 3
- 238000001723 curing Methods 0.000 claims 1
- 239000003292 glue Substances 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 10
- 230000005669 field effect Effects 0.000 abstract description 5
- 238000007789 sealing Methods 0.000 description 3
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 239000000919 ceramic Substances 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 238000004026 adhesive bonding Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005538 encapsulation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009499 grossing Methods 0.000 description 1
- 238000007373 indentation Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
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Abstract
本实用新型涉及压电扬声器领域，具体涉及一种安装基板为锯齿状的阵列式压电扬声器组。基板为锯齿状薄板，由若干个平面形式的安装面连接构成，相邻两个安装面的夹角相等，为0°＜θ＜180°；每个安装面上设置一个镂空的安装孔；压电扬声器与开孔的前腔壳以及封闭的后腔壳粘接，并安装在基板的安装孔内；各压电扬声器之间为电学上的并联模式，各压电扬声器的中心点共线且距离相等。通过引入锯齿状基板，可改善平面扬声器阵列的干涉和收声效果，可通过优化扬声器空间指向性，以改善扬声器的空间声场效果，扩大压电扬声器的利用范围。锯齿状基板的平面夹角会影响扬声器阵列中高频段的指向性，可以通过调整平面夹角使锯齿状平板压电扬声器阵列得到好的声场效果。
The utility model relates to the field of piezoelectric loudspeakers, in particular to an array piezoelectric loudspeaker group with a zigzag mounting substrate. The substrate is a jagged thin plate, which is composed of several planar mounting surfaces connected. The angle between two adjacent mounting surfaces is equal, which is 0°<θ<180°; each mounting surface is provided with a hollow mounting hole; The electric speaker is bonded to the open front cavity shell and the closed rear cavity shell, and is installed in the mounting hole of the substrate; the piezoelectric speakers are electrically connected in parallel mode, and the center points of the piezoelectric speakers are collinear and The distance is equal. By introducing the serrated substrate, the interference and sound collection effect of the planar speaker array can be improved, the spatial sound field effect of the speaker can be improved by optimizing the spatial directivity of the speaker, and the utilization range of the piezoelectric speaker can be expanded. The plane angle of the serrated substrate will affect the directivity of the high-frequency band in the speaker array. By adjusting the plane angle, the serrated flat piezoelectric speaker array can obtain a good sound field effect.
Description
Technical field
The utility model relates to the piezoelectric speaker field, and being specifically related to a kind of installation base plate is jagged array piezoelectric speaker group.
Background technology
The sounding principle of piezoelectric speaker is: because the potsherd inverse piezoelectric effect, electric current drives the piezoelectric ceramic piece vibration, and piezoelectric ceramic piece and vibrating diaphragm is bonding, and then vibrating diaphragm produces corresponding deformation, promotes the air sounding, produces and the corresponding acoustical signal of the signal of telecommunication.Realized like this through mechanical energy the signal of telecommunication can avoiding electromagnetic interference, reducing power consumption directly to the transformation of acoustical signal, simultaneous adaptation light, the thin development trend of electronic device now, in some fields pretty good development prospect is arranged.
But also there are some shortcomings in the monolithic piezoelectric loud speaker, and this mainly shows relatively poor on the tonequality, and the monolithic loud speaker to around sounding, weak effect quiets down.Loudspeaker array can improve loud speaker tonequality, can effectively improve directive property simultaneously and quiet down effect.
The piezoelectric speaker array of existing linear array, sharp-pointed at medium-high frequency section vertical directivity, and scope is narrower.Given this, this is novel to provide a kind of novel piezoelectric loudspeaker array, and one type of zigzag array piezoelectricity panel speaker improves the sounding effect of piezoelectric speaker on the one hand, widens the directive property of medium-high frequency section simultaneously, realizes quieting down effect.
Summary of the invention
Problems such as the utility model is poor to existing monolithic piezoelectric loud speaker sounding effect, linear array directive property is sharp-pointed; A kind of jagged array piezoelectric speaker group that proposes; Can improve the workability of piezoelectric speaker array to a certain extent, improve the comprehensive sound field effect of piezoelectric speaker simultaneously.
The design that the utility model adopts is:
Substrate is the zigzag thin plate, is connected and composed by the installed surface of several plane forms, and the angle of adjacent two installed surfaces equates, is 0 °＜θ＜180 °; The installing hole of a hollow out is set on each installed surface; The ante-chamber shell of piezoelectric speaker and perforate and the back cavity shell of sealing are bonding, and are installed in the installing hole of substrate; Be the paralleling model on the electricity between each piezoelectric speaker, the central point conllinear of each piezoelectric speaker and distance equate.
Said piezoelectric speaker is selected PS23 * 27 type piezoelectric speakers for use.
Said substrate is an axially symmetric structure.
The preferred value of the angle theta of said installed surface is 150 °, 120 ° or 90 °.
Adopt common bonding mode, welding manner or some adhesive curing mode between said piezoelectric speaker and the substrate.
The beneficial effect of the utility model is: this zigzag array piezoelectric speaker group, and can improve piezoelectric speaker space sound field effect and quiet down effect, realized the spatial design of piezoelectric speaker.The piezoelectric speaker array structure of the utility model indentation is novel, excellent performance, and sound field effect is good, and use has good prospects.
Description of drawings
Fig. 1 (a) and Fig. 1 (b) are respectively the vertical view and the A-A face profile of the utility model;
Fig. 2 is the typical frequency response curve of PS23 * 27 type piezoelectric speakers of selecting for use;
Fig. 3 (a) and Fig. 3 (b) are respectively 150 °, 120 °, 90 ° free found field and seal frequency response curve in the sound field for the installed surface angle;
It is 150 °, 120 °, the frequency response curve of 90 ° three kinds installation base plates under different test environments that Fig. 4 (a), Fig. 4 (b) are respectively angle with Fig. 4 (c);
Label among the figure:
The 1-substrate; The 2-piezoelectric speaker.
Embodiment
The utility model provides a kind of zigzag array piezoelectric speaker group, through embodiment and accompanying drawing the utility model is further specified below.
Shown in Fig. 1 (a) and Fig. 1 (b), substrate 1 is the zigzag thin plate of axially symmetric structure, is connected and composed by the installed surface of several plane forms, and the angle of adjacent two installed surfaces equates, is 0 °＜θ＜180 °; The installing hole of a hollow out is set on each installed surface; Piezoelectric speaker 2 is bonding with ante-chamber shell and back cavity shell, and the ante-chamber shell is provided with penetrable sound hole, through size of regulating penetrable sound hole and the sound effect that quantity can obtain suitable single loud speaker, and the sealing of back cavity shell, and expose the wire bonds point; All with gluing the connecing of point, sealing effect is good for the chamber, front and back; Except that the border was bonding, other parts can not have contact between ante-chamber shell, piezoelectric speaker, the back cavity shell, to guarantee when leading to very big electric current the vibration of cavity before and after the vibration of piezoelectric speaker sheet can not drive yet.
Piezoelectric speaker after the encapsulation is installed in the installing hole of substrate through common bonding mode, welding manner or some adhesive curing mode; Be the paralleling model on the electricity between each piezoelectric speaker, the central point conllinear of each piezoelectric speaker and distance equate.
Preferred piezoelectric speaker 2 is selected PS23 * 27 type piezoelectric speakers for use, and its typical frequency response curve is as shown in Figure 2; It is 4 that preferred piezoelectric speaker is installed number, and preferred installed surface angle theta is 150 °, 120 ° or 90 °.
In conjunction with Fig. 3 (a), Fig. 3 (b) and Fig. 4 (a), Fig. 4 (b), Fig. 4 (c), the frequency response curve of gained has less burr through smoothing processing, and curve is measured under laboratory condition, and the gained data are credible.Observe its variation tendency, can find, can't observe the difference of sound pressure level in the medium and low frequency section intuitively; But greater than a certain frequency when (being about 5000Hz); Can observe significantly: the θ value is more little, and the acoustic pressure under the same frequency is high more, promptly greater than a certain frequency the time; Measured sound pressure level is that this moment, directive property was obvious with the reducing and increase of θ angle.
Be a more excellent embodiment of the utility model more than, for a person skilled in the art, under the prerequisite that does not break away from this design, can make improvement, but all belong to the utility model scope of patent protection.
Claims (5)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203706564U CN202310093U (en) | 2011-09-27 | 2011-09-27 | Jagged array type piezoelectric loudspeaker set |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203706564U CN202310093U (en) | 2011-09-27 | 2011-09-27 | Jagged array type piezoelectric loudspeaker set |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202310093U true CN202310093U (en) | 2012-07-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203706564U Expired - Fee Related CN202310093U (en) | 2011-09-27 | 2011-09-27 | Jagged array type piezoelectric loudspeaker set |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202310093U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108476359A (en) * | 2015-12-15 | 2018-08-31 | Pss比利时股份有限公司 | Loudspeaker assembly and correlation technique |
-
2011
- 2011-09-27 CN CN2011203706564U patent/CN202310093U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108476359A (en) * | 2015-12-15 | 2018-08-31 | Pss比利时股份有限公司 | Loudspeaker assembly and correlation technique |
| CN108476359B (en) * | 2015-12-15 | 2022-02-15 | Pss比利时股份有限公司 | Loudspeaker assembly and related method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120704 Termination date: 20180927 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |