CN102075836B - Single-diaphragm piezoelectric ceramic loudspeaker - Google Patents
Single-diaphragm piezoelectric ceramic loudspeaker Download PDFInfo
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- CN102075836B CN102075836B CN201110020112XA CN201110020112A CN102075836B CN 102075836 B CN102075836 B CN 102075836B CN 201110020112X A CN201110020112X A CN 201110020112XA CN 201110020112 A CN201110020112 A CN 201110020112A CN 102075836 B CN102075836 B CN 102075836B
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- piezoelectric ceramic
- ceramic loudspeaker
- vibrating diaphragm
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- diaphragm
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Abstract
The invention discloses a single-diaphragm piezoelectric ceramic loudspeaker which does not generate current crowding and static electricity during working. The single-diaphragm piezoelectric ceramic loudspeaker comprises a front cover. A metal film is arranged on the internal side of the front cover. An insulated organic vibrating diaphragm is arranged on the metal film. A single-crystal piezoelectric ceramic plate is arranged on the organic vibrating diaphragm. The metal film, the organic vibrating diaphragm and the single-crystal piezoelectric ceramic plate form the vibrating assembly of the piezoelectric ceramic loudspeaker. A flexible printed circuit board is pressed on the single-crystal piezoelectric ceramic plate and is electrically connected with the single-crystal piezoelectric ceramic plate. The metal film, the organic vibrating diaphragm, the single-crystal piezoelectric ceramic plate and the flexible printed circuit board form the piezoelectric sounding device of the piezoelectric ceramic loudspeaker. A rear cover is fixedly arranged on the front cover. The piezoelectric sounding device is fixedly installed in a cavity between the rear cover and the front cover. By adopting the structure, the single-diaphragm piezoelectric ceramic loudspeaker is suitable for a portable equipment terminal and can be used for replaying voices and music.
Description
Technical field
The present invention relates to piezoelectric ceramic loudspeaker, relate in particular to the piezoelectric ceramic loudspeaker that is used in a kind of portable set terminal to voice and music playback.
Background technology
Piezoelectric ceramic loudspeaker commonly used at present; Comprise protecgulum; The protecgulum inboard is provided with metallic film, and metallic film is provided with the monocrystalline piezoelectric potsherd, and metallic film and monocrystalline piezoelectric potsherd have constituted the vibration component of piezoelectric ceramic loudspeaker; Flexible print wiring board is pressed on the monocrystalline piezoelectric potsherd and with the monocrystalline piezoelectric potsherd and is electrically connected, and metallic film, monocrystalline piezoelectric potsherd and flexible print wiring board have constituted a piezo-electric acoustic generator spare; On protecgulum, also be set with bonnet, piezo-electric acoustic generator spare is fixedly mounted in the cavity between bonnet and the protecgulum.
Piezoelectric ceramic loudspeaker is a kind of electro-acoustic transducer device of realizing electricity-mechanics-acoustics conversion through the inverse piezoelectric effect of monocrystalline piezoelectric potsherd, is applied in widely in the portable set terminal.When through the flexible print wiring board incoming audio signal, according to the inverse piezoelectric effect principle of monocrystalline piezoelectric potsherd, the vibration component of piezoelectric ceramic loudspeaker will produce corresponding stretching, extension or contractile motion, thereby has promoted air, gives off sound.
The major defect of the piezoelectric ceramic loudspeaker of said structure is: the installation because piezoelectric ceramic piece and metallic film are directly fitted; Piezoelectric ceramic sector-meeting and metallic film are conducted and produce electric current and gather or produce static; Thereby cause damaging other device---like mainboard in the mobile phone etc., cause unnecessary loss.
Summary of the invention
The technical problem that the present invention will solve is: the monofilm formula piezoelectric ceramic loudspeaker that provides a kind of antistatic in use, anti-electric current to gather.
For addressing the above problem; The technical scheme that the present invention adopts is: described monofilm formula piezoelectric ceramic loudspeaker; Comprise protecgulum, said protecgulum inboard is provided with metallic film, is characterized in: metallic film is provided with organic vibrating diaphragm of insulation; Organic vibrating diaphragm is provided with the monocrystalline piezoelectric potsherd, and metallic film, organic vibrating diaphragm and monocrystalline piezoelectric potsherd have constituted the vibration component of said piezoelectric ceramic loudspeaker; Flexible print wiring board is pressed on the monocrystalline piezoelectric potsherd and with the monocrystalline piezoelectric potsherd and is electrically connected, and metallic film, organic vibrating diaphragm, monocrystalline piezoelectric potsherd and flexible print wiring board have constituted the piezo-electric acoustic generator spare of said piezoelectric ceramic loudspeaker; On protecgulum, also be set with bonnet, described piezo-electric acoustic generator spare is fixedly mounted in the cavity between bonnet and the protecgulum.
The further technical scheme of the present invention is: described protecgulum is provided with the convenient positioning boss that piezo-electric acoustic generator spare is installed.
Advantage of the present invention is: owing between metallic film and monocrystalline piezoelectric potsherd, be provided with organic vibrating diaphragm of insulation; Can avoid the conducting of piezoelectric ceramic piece and metallic film; Electric current gathers or static thereby can avoid in the course of the work producing, and avoids damaging other device; In addition, piezo-electric acoustic generator spare is installed between the protecgulum and bonnet of piezoelectric ceramic loudspeaker, can protects piezoelectric ceramic piece and vibrating diaphragm effectively, improve the useful life of loud speaker.
Description of drawings
Fig. 1 is the structural representation of a kind of embodiment of monofilm formula piezoelectric ceramic loudspeaker of the present invention.
Fig. 2 is the structural representation of the another kind of embodiment of monofilm formula piezoelectric ceramic loudspeaker of the present invention.
Embodiment
Below in conjunction with accompanying drawing the present invention is further described.
Referring to shown in Figure 1; Monofilm formula piezoelectric ceramic loudspeaker of the present invention; Comprise protecgulum 101; The outer side edges of protecgulum 101 is provided with positioning boss 1011, and protecgulum 101 inboards are provided with metallic film 102, and metallic film 102 is provided with organic vibrating diaphragm 103 of insulation; Organic vibrating diaphragm 103 of insulation is provided with monocrystalline piezoelectric potsherd 106, organic vibrating diaphragm 103 of metallic film 102, insulation and the vibration component that monocrystalline piezoelectric potsherd 106 has constituted said piezoelectric ceramic loudspeaker; Flexible print wiring board 104 is pressed on the monocrystalline piezoelectric potsherd 106 and with monocrystalline piezoelectric potsherd 106 and is electrically connected, and metallic film 102, organic vibrating diaphragm 103, monocrystalline piezoelectric potsherd 106 and flexible print wiring board 104 have constituted the piezo-electric acoustic generator spare of said piezoelectric ceramic loudspeaker; On protecgulum 101, also be set with bonnet 105, piezo-electric acoustic generator spare is fixedly mounted in the cavity between bonnet 105 and the protecgulum 101, and the effect that positioning boss 1011 is set is the location and installation of convenient piezo-electric acoustic generator spare.
When through flexible print wiring board 104 incoming audio signals, according to the inverse piezoelectric effect principle of monocrystalline piezoelectric potsherd 106, the vibration component of piezoelectric ceramic loudspeaker will produce corresponding stretching, extension or contractile motion, thereby has promoted air, gives off sound.
Between piezoelectric ceramic piece 106 and metallic film 102, be provided with organic vibrating diaphragm 103 of insulation; Can avoid piezoelectric ceramic piece 106 and metallic film 102 conductings; Avoid producing that electric current gathers and static, thereby avoid taking place because of electric current gathers the incident that causes damaging other device with static; In addition, piezo-electric acoustic generator spare is installed between the protecgulum 101 and bonnet 105 of piezoelectric ceramic loudspeaker, can protects piezoelectric ceramic piece 106, metallic film 102 and organic vibrating diaphragm 103 effectively, improve the useful life of loud speaker.
In actual use; According to the requirement of different use occasions, can change the structure and the shape of protecgulum 101 and bonnet 105, to improve tonequality; As shown in Figure 2 is a kind of improvement: the cavity of protrusion can be set on protecgulum 101, also can an end of bonnet 105 be arranged to Open architecture.Above-mentioned these improvement or improved combination all should belong to the protection range of this patent.
Claims (2)
1. monofilm formula piezoelectric ceramic loudspeaker; Comprise protecgulum; Said protecgulum inboard is provided with metallic film; It is characterized in that: metallic film is provided with organic vibrating diaphragm of insulation, and organic vibrating diaphragm is provided with the monocrystalline piezoelectric potsherd, and metallic film, organic vibrating diaphragm and monocrystalline piezoelectric potsherd have constituted the vibration component of said piezoelectric ceramic loudspeaker; Flexible print wiring board is pressed on the monocrystalline piezoelectric potsherd and with the monocrystalline piezoelectric potsherd and is electrically connected, and metallic film, organic vibrating diaphragm, monocrystalline piezoelectric potsherd and flexible print wiring board have constituted the piezo-electric acoustic generator spare of said piezoelectric ceramic loudspeaker; On protecgulum, also be set with bonnet, described piezo-electric acoustic generator spare is fixedly mounted in the cavity between bonnet and the protecgulum.
2. according to the described monofilm formula of claim 1 piezoelectric ceramic loudspeaker, it is characterized in that: described protecgulum is provided with the convenient positioning boss that piezo-electric acoustic generator spare is installed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110020112XA CN102075836B (en) | 2011-01-18 | 2011-01-18 | Single-diaphragm piezoelectric ceramic loudspeaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110020112XA CN102075836B (en) | 2011-01-18 | 2011-01-18 | Single-diaphragm piezoelectric ceramic loudspeaker |
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| Publication Number | Publication Date |
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| CN102075836A CN102075836A (en) | 2011-05-25 |
| CN102075836B true CN102075836B (en) | 2012-11-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201110020112XA Active CN102075836B (en) | 2011-01-18 | 2011-01-18 | Single-diaphragm piezoelectric ceramic loudspeaker |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102015116640B4 (en) * | 2015-10-01 | 2024-09-05 | USound GmbH | MEMS circuit board module with integrated piezoelectric structure and transducer arrangement |
| CN105792082A (en) * | 2016-05-30 | 2016-07-20 | 山东共达信息技术有限公司 | Ceramic loudspeaker |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201319667Y (en) * | 2008-12-30 | 2009-09-30 | 西安康弘新材料科技有限公司 | Multilayer piezoelectric loudspeaker |
| CN201383871Y (en) * | 2009-04-24 | 2010-01-13 | 奈瓷(西安)应用材料有限公司 | Double-side piezoelectric ceramic loudspeaker |
| CN101827296A (en) * | 2010-05-05 | 2010-09-08 | 张家港市玉同电子科技有限公司 | Piezoelectric ceramic loudspeaker |
| CN201986143U (en) * | 2011-01-18 | 2011-09-21 | 张家港市玉同电子科技有限公司 | Single-diaphragm type piezoelectric ceramic loudspeaker |
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2011
- 2011-01-18 CN CN201110020112XA patent/CN102075836B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201319667Y (en) * | 2008-12-30 | 2009-09-30 | 西安康弘新材料科技有限公司 | Multilayer piezoelectric loudspeaker |
| CN201383871Y (en) * | 2009-04-24 | 2010-01-13 | 奈瓷(西安)应用材料有限公司 | Double-side piezoelectric ceramic loudspeaker |
| CN101827296A (en) * | 2010-05-05 | 2010-09-08 | 张家港市玉同电子科技有限公司 | Piezoelectric ceramic loudspeaker |
| CN201986143U (en) * | 2011-01-18 | 2011-09-21 | 张家港市玉同电子科技有限公司 | Single-diaphragm type piezoelectric ceramic loudspeaker |
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| CN102075836A (en) | 2011-05-25 |
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