CN2812464Y - Folding horn type piezoelectric loudspeaker - Google Patents
Folding horn type piezoelectric loudspeaker Download PDFInfo
- Publication number
- CN2812464Y CN2812464Y CN 200520025618 CN200520025618U CN2812464Y CN 2812464 Y CN2812464 Y CN 2812464Y CN 200520025618 CN200520025618 CN 200520025618 CN 200520025618 U CN200520025618 U CN 200520025618U CN 2812464 Y CN2812464 Y CN 2812464Y
- Authority
- CN
- China
- Prior art keywords
- housing
- casing
- sound
- circle
- bowl
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 239000000919 ceramic Substances 0.000 claims abstract description 5
- 238000009434 installation Methods 0.000 claims description 2
- 230000005855 radiation Effects 0.000 abstract description 4
- 230000001755 vocal effect Effects 0.000 abstract 2
- 230000015572 biosynthetic process Effects 0.000 abstract 1
- 238000004519 manufacturing process Methods 0.000 description 4
- 235000007173 Abies balsamea Nutrition 0.000 description 1
- 239000004857 Balsam Substances 0.000 description 1
- 244000018716 Impatiens biflora Species 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229920006351 engineering plastic Polymers 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Landscapes
- Obtaining Desirable Characteristics In Audible-Bandwidth Transducers (AREA)
- Piezo-Electric Transducers For Audible Bands (AREA)
Abstract
The utility model discloses a foldable horn type piezoelectric loudspeaker, it includes piezoceramics piece, casing, bottom, bowl, at the circular piezoceramics piece of casing bottom surface inside coaxial arrangement, space formation collection can antechamber between its above-mentioned and the casing bottom surface, and casing upper portion central point puts the department and has bellied vocal pipe and vocal mouth, and the bottom bonds on the circle of the lower part of casing for keep apart the radiation of reverse sound wave. The input audio voltage signal makes the piezoelectric ceramic plate vibrate, the sound energy is reflected and gathered in the energy gathering front cavity, and the sound is transmitted by the air medium through the sound outlet, the reflecting cover and the folding horn sound guide system of the annular reflecting bowl. The piezoelectric loudspeaker has small volume, large volume, low power consumption and high reliability, and the acoustic performance meets the regulations of national standards; the alarm is particularly suitable for being used on various modern alarms, can be embedded on a panel and is also suitable for being arranged in the alarm.
Description
Technical field
The utility model belongs to a kind of electro-acoustic element.Specifically, it relates to the piezoelectric speaker that is used in specially on the modern various alarm.
Technical background
Along with the needs of social real-life, no matter alarm all is installed in office, family, bank, automobile industry, Advanced Concepts Laboratory various aspects, it is the indispensable device of the safety precaution theft and the accident of divulging a secret.Development in science and technology in recent years, the technology content of alarm self design and user's requirement are more and more higher, in order to satisfy the requirement in market, obviously, it as loud speaker one of vitals of alarm apparatus, therefore, the loudspeaker design manufacture level has been proposed more fully requirement, at present, the defective of conventional loudspeakers is: (one) generally adopts the coil-moving speaker structure, its volume is big, complex process, cost height, electro-acoustic conversion efficiency are low, is contained in disguised extreme difference on the alarm; (2) though the loud speaker manufacturing firm that has improves conventional loudspeakers in design, and volume has reduced, and acoustic performance does not reach requirement,, frequency influence narrow range little as volume, alarm work deterrent force are poor; (3) be worth the existing loadspeaker structure form of proposition and feature to be unsuitable for being installed on the alarm of innovation or special purpose especially, its design has been brought restriction, in sum, it is very urgent to improve loudspeaker design.
Summary of the invention
The purpose of the utility model development be to provide a kind of volume little, give great volume, install easily, low power consumption, acoustic performance meets national standard, and is adapted to the collapsible horn type piezoelectric speaker on the novel or special purpose alarm of various modern times.The utility model is realized by following step: see accompanying drawing 1, it comprises circular piezoelectric potsherd (1), it is characterized in that: inner coaxial installation round ceramic sheet (1) in housing (2) bottom surface, the space forms energy collecting ante-chamber A above it and between housing (2) bottom surface, housing (2) central upper portion position is lobed to go out acoustic conducting pipe, outlet sound mouth is B up, looping reverberation bowl C between justifying around its cylindrical and in housing (2) top, its outlet sound mouth B, reflector (4) and reverberation bowl C are common to constitute collapsible horn speaker acoustic conductance to system, bottom (3) is bonded on the round edge of housing (2) bottom section, constitutes back cavity; The third-class office of reflector (4) circumference is provided with three bonding supports, is bonded in housing (2) top on the circle; Circular piezoelectric potsherd (1) welds out two audio frequency feeder line D1, D2, and the input audio voltage signal drives piezoelectric ceramic piece (1) vibration, promotes the air medium sounding by collapsible horn acoustic conductance to system.
Form annular reflection bowl C around outlet sound mouth B cylindrical and in housing (2) top between the circle, its bottom surface is the plane, still sees accompanying drawing 1.
The third-class office of reflector (4) circumference is provided with three bonding supports, is bonded in housing (2) top on the circle, and forms three crescent outlet sound mouths.
Advantage of the present utility model and good effect, (1) this loud speaker is to design with piezoelectric speaker for modern novel alarm specially, it is little to have volume, and diameter is 29.5mm, highly for 16.5mm, on the face version that is embedded in alarm rational in infrastructure or assemble its inside.(2) the sensitive height of high its product sound of volume is not less than 105dB, and deterrent force is arranged behind the alarm work very much.And current sinking is little.(3) frequency range is 1.5KHz～20KHz, meets fully in alarm requirement and the national standard and stipulates.(4) production technology is simple, cost is low, reliability is high, is specially adapted to various alarms and uses.
Description of drawings
Fig. 1 is the collapsible horn type of the utility model piezoelectric speaker assembling section and sound travel principle schematic, wherein: 1 for circular piezoelectric potsherd, 2 is that housing, 3 is that bottom, 4 is that reflector, A are that energy collecting ante-chamber, B are that outlet sound mouth, C are the annular reflection bowl, and D1, D2 are feeder line.
Embodiment
Below in conjunction with accompanying drawing the utility model is described further, see accompanying drawing 1, (one) this loud speaker is to belong to collapsible horn type piezoelectric speaker, has designed reflector 4 especially for this reason, be bonded in housing 2 tops on the circle, and and housing 2 tops in form three crescent outlet sound mouths between the circle; Outlet sound mouth B, reflector 4 and reverberation bowl C constitute collapsible horn type acoustic conductance jointly to system, have been equivalent to prolong the length of radiation horn, can improve the acoustic radiation ability of loud speaker effectively, the higher sound pressure level of output in the frequency band of broad; (2) the integrated ante-chamber A of loud speaker as shown in Figure 1 highly is 2mm; (3) circular piezoelectric potsherd 1 is by the metal pole piece with potsherd is two-layer bonded is integral, after the assembling of the utility model loud speaker, through two audio frequency feeder line inputs of D1, D2 audio voltage signal, make 1 vibration of circular piezoelectric potsherd, acoustic energy in ante-chamber after reflection is gathered,, sound to system by collapsible horn type acoustic conductance by the air medium propagation.(4) bottom 3 is bonded on the round edge of housing 2 bottom sections and constitutes back cavity, can play the anti-phase acoustic wave action of isolation from 1 back side radiation of circular piezoelectric potsherd; (5) described housing 2, bottom 3, reflector 4 all adopt the manufacturing of ABS engineering plastics, and the soft balsam stick is all adopted in all abutting edges of the utility model piezoelectric speaker, to guarantee reliability of products.
Claims (3)
1 collapsible horn type piezoelectric speaker, it comprises circular piezoelectric potsherd (1), it is characterized in that: inner coaxial installation round ceramic sheet (1) in housing (2) bottom surface, the space forms energy collecting ante-chamber (A) above it and between housing (2) bottom surface, housing (2) central upper portion position is lobed to go out acoustic conducting pipe, outlet sound mouth is (B) up, looping reverberation bowl (C) between justifying around its cylindrical and in housing (2) top, its outlet sound mouth (B), reflector (4) and reverberation bowl (C) constitute collapsible horn speaker acoustic conductance jointly to system, bottom (3) is bonded on the round edge of housing (2) bottom section, constitutes back cavity; The third-class office of reflector (4) circumference is provided with three bonding supports, is bonded in housing (2) top on the circle; Circular piezoelectric potsherd (1) welds out two audio frequency feeder lines (D1), (D2), and the input audio voltage signal drives piezoelectric ceramic piece (1) vibration, promotes the air medium sounding by collapsible horn acoustic conductance to system.
2 according to the described loud speaker of claim 1, it is characterized in that: form annular reflection bowl (C) around outlet sound mouth (B) cylindrical and in housing (2) top between the circle, its bottom surface is the plane.
3 according to the described loud speaker of claim 1, it is characterized in that: the third-class office of reflector (4) circumference is provided with three bonding supports, is bonded in housing (2) top on the circle, and forms three crescent outlet sound mouths.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520025618 CN2812464Y (en) | 2005-04-19 | 2005-04-19 | Folding horn type piezoelectric loudspeaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520025618 CN2812464Y (en) | 2005-04-19 | 2005-04-19 | Folding horn type piezoelectric loudspeaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2812464Y true CN2812464Y (en) | 2006-08-30 |
Family
ID=36938847
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520025618 Expired - Fee Related CN2812464Y (en) | 2005-04-19 | 2005-04-19 | Folding horn type piezoelectric loudspeaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2812464Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102905203A (en) * | 2012-09-28 | 2013-01-30 | 歌尔声学股份有限公司 | Loudspeaker device |
| CN103116954A (en) * | 2013-01-24 | 2013-05-22 | 汉得利（常州）电子有限公司 | Low-power-consumption piezoelectric security and protection alertor |
| CN103152681A (en) * | 2013-03-29 | 2013-06-12 | 中国电子科技集团公司第三研究所 | Piezoelectric ceramic transducer |
| WO2016150216A1 (en) * | 2015-03-25 | 2016-09-29 | 歌尔声学股份有限公司 | Speaker module |
| CN113727238A (en) * | 2021-10-21 | 2021-11-30 | 北京北科烁普科技有限公司 | Novel reflective directional sound wave horn |
-
2005
- 2005-04-19 CN CN 200520025618 patent/CN2812464Y/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102905203A (en) * | 2012-09-28 | 2013-01-30 | 歌尔声学股份有限公司 | Loudspeaker device |
| CN102905203B (en) * | 2012-09-28 | 2015-07-22 | 歌尔声学股份有限公司 | Loudspeaker device |
| CN103116954A (en) * | 2013-01-24 | 2013-05-22 | 汉得利（常州）电子有限公司 | Low-power-consumption piezoelectric security and protection alertor |
| CN103152681A (en) * | 2013-03-29 | 2013-06-12 | 中国电子科技集团公司第三研究所 | Piezoelectric ceramic transducer |
| CN103152681B (en) * | 2013-03-29 | 2015-07-01 | 中国电子科技集团公司第三研究所 | Piezoelectric ceramic transducer |
| WO2016150216A1 (en) * | 2015-03-25 | 2016-09-29 | 歌尔声学股份有限公司 | Speaker module |
| US10299030B2 (en) | 2015-03-25 | 2019-05-21 | Goertek Inc. | Speaker module with sealed cavity and a communicating hole |
| CN113727238A (en) * | 2021-10-21 | 2021-11-30 | 北京北科烁普科技有限公司 | Novel reflective directional sound wave horn |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20060830 Termination date: 20130419 |