CN102036153A - Double-film type piezoelectric ceramic loudspeaker - Google Patents
Double-film type piezoelectric ceramic loudspeaker Download PDFInfo
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- CN102036153A CN102036153A CN 201110020104 CN201110020104A CN102036153A CN 102036153 A CN102036153 A CN 102036153A CN 201110020104 CN201110020104 CN 201110020104 CN 201110020104 A CN201110020104 A CN 201110020104A CN 102036153 A CN102036153 A CN 102036153A
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- piezoelectric ceramic
- metallic film
- ceramic loudspeaker
- monocrystalline
- vibrating diaphragm
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Abstract
The invention discloses a double-film type piezoelectric ceramic loudspeaker which can prevent current crowding or static electricity and improve sound quality. The double-film type piezoelectric ceramic loudspeaker comprises a front cover, wherein a vibrating component which consists of a metal thin film, a monocrystalline piezoelectric ceramic sheet and organic vibrating films which are arranged on the two sides of the metal thin film is arranged inside the front cover; a flexible printed circuit board is pressed on the monocrystalline piezoelectric ceramic sheet and electrically connected with the monocrystalline piezoelectric ceramic sheet; the metal thin film, the monocrystalline piezoelectric ceramic sheet, the organic vibrating films which are arranged on the two sides of the metal thin film and the flexible printed circuit board form a piezoelectric sounding device of the piezoelectric ceramic loudspeaker; a rear cover is also fixed on the front cover; and the piezoelectric sounding device is fixedly arranged in a cavity between the rear cover and the front cover. The double-film type piezoelectric ceramic loudspeaker of the structure is suitable to be used for replaying sound and music in a portable equipment terminal.
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, metallic film is provided with the monocrystalline piezoelectric potsherd, 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; Also be set with bonnet on protecgulum, 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 by the inverse piezoelectric effect of monocrystalline piezoelectric potsherd, is applied in widely in the portable set terminal.When by 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---as mainboard in the mobile phone etc., cause unnecessary loss.In addition, the sound bass deficiency of sending after the piezoelectric ceramic piece vibration in the piezoelectric ceramic loudspeaker of said structure, tonequality blemish in an otherwise perfect thing.
Summary of the invention
The technical problem to be solved in the present invention is: provide a kind of antistatic in use, anti-electric current to gather and can improve the dual-membrane type piezoelectric ceramic loudspeaker of tonequality.
For addressing the above problem, the technical solution used in the present invention is: described dual-membrane type piezoelectric ceramic loudspeaker, comprise protecgulum, be characterized in: be provided with organic vibrating diaphragm of insulation in described protecgulum inboard, be provided with metallic film at the upside of organic vibrating diaphragm; Also be provided with organic vibrating diaphragm of insulation at the metallic film upside, be provided with the monocrystalline piezoelectric potsherd at this organic vibrating diaphragm upside, metallic film, monocrystalline piezoelectric potsherd and the organic vibrating diaphragm that is arranged on the metallic film both sides have constituted the vibration component of described 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, the organic vibrating diaphragm that is arranged on the metallic film both sides and flexible print wiring board have constituted the piezo-electric acoustic generator spare of described piezoelectric ceramic loudspeaker; Also be set with bonnet on protecgulum, 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 to be provided with organic vibrating diaphragm of insulation in the both sides of metallic film, 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, after the both sides of metallic film are provided with organic vibrating diaphragm, can increase vibration damping, improve the vibration performance of vibration component, thereby reach the purpose that remedies the bass deficiency, improves tonequality; Moreover, piezo-electric acoustic generator spare is installed between the protecgulum and bonnet of piezoelectric ceramic loudspeaker, can protect 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 dual-membrane type piezoelectric ceramic loudspeaker of the present invention;
Fig. 2 is the structural representation of the another kind of embodiment of dual-membrane type piezoelectric ceramic loudspeaker of the present invention.
Embodiment
The present invention is further illustrated below in conjunction with accompanying drawing.
Referring to shown in Figure 1, dual-membrane type piezoelectric ceramic loudspeaker of the present invention, comprise protecgulum 101, the outer side edges of protecgulum 101 is provided with positioning boss 1011, be provided with organic vibrating diaphragm 102 of insulation in described protecgulum 101 inboards, be provided with metallic film 103 at the upside of organic vibrating diaphragm 102; Also be provided with organic vibrating diaphragm 104 of insulation at metallic film 103 upsides, be provided with monocrystalline piezoelectric potsherd 107 at these organic vibrating diaphragm 104 upsides, metallic film 103, monocrystalline piezoelectric potsherd 107 and the organic vibrating diaphragm 102,104 that is arranged on metallic film 103 both sides have constituted the vibration component of described piezoelectric ceramic loudspeaker; Flexible print wiring board 105 is pressed on the monocrystalline piezoelectric potsherd 107 and with monocrystalline piezoelectric potsherd 107 and is electrically connected, the piezo-electric acoustic generator spare that metallic film 103, monocrystalline piezoelectric potsherd 107, the organic vibrating diaphragm 102,104 that is arranged on metallic film 103 both sides and flexible print wiring board 105 have constituted described piezoelectric ceramic loudspeaker; Also be set with bonnet 106 on protecgulum 101, described piezo-electric acoustic generator spare is fixedly mounted in the cavity between bonnet 106 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 by flexible print wiring board 105 incoming audio signals, according to the inverse piezoelectric effect principle of monocrystalline piezoelectric potsherd 107, the vibration component of piezoelectric ceramic loudspeaker will produce corresponding stretching, extension or contractile motion, thereby has promoted air, gives off sound.
Be provided with organic vibrating diaphragm 102,104 of insulation in the both sides of metallic film 103 after, can avoid the conducting of piezoelectric ceramic piece 107 and metallic film 103, electric current gathers or static thereby can avoid in the course of the work producing, and avoids damaging other device; In addition, after the both sides of metallic film 103 are provided with organic vibrating diaphragm 102,104, can increase vibration damping, improve the vibration performance of vibration component, thereby reach the purpose that remedies the bass deficiency, improves tonequality; Moreover, piezo-electric acoustic generator spare is installed between the protecgulum 101 and bonnet 106 of piezoelectric ceramic loudspeaker, can protect piezo-electric acoustic generator spare 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 106, to improve tonequality, be a kind of improvement as shown in Figure 2: the cavity of protrusion can be set on protecgulum 101, also an end of bonnet 106 can 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. the dual-membrane type piezoelectric ceramic loudspeaker comprises protecgulum, it is characterized in that: be provided with organic vibrating diaphragm of insulation in described protecgulum inboard, be provided with metallic film at the upside of organic vibrating diaphragm; Also be provided with organic vibrating diaphragm of insulation at the metallic film upside, be provided with the monocrystalline piezoelectric potsherd at this organic vibrating diaphragm upside, metallic film, monocrystalline piezoelectric potsherd and the organic vibrating diaphragm that is arranged on the metallic film both sides have constituted the vibration component of described 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, the organic vibrating diaphragm that is arranged on the metallic film both sides and flexible print wiring board have constituted the piezo-electric acoustic generator spare of described piezoelectric ceramic loudspeaker; Also be set with bonnet on protecgulum, described piezo-electric acoustic generator spare is fixedly mounted in the cavity between bonnet and the protecgulum.
2. according to the described dual-membrane type piezoelectric ceramic loudspeaker of claim 1, 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 |
|---|---|---|---|
| CN 201110020104 CN102036153B (en) | 2011-01-18 | 2011-01-18 | Double-film type piezoelectric ceramic loudspeaker |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110020104 CN102036153B (en) | 2011-01-18 | 2011-01-18 | Double-film type piezoelectric ceramic loudspeaker |
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| Publication Number | Publication Date |
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| CN102036153A true CN102036153A (en) | 2011-04-27 |
| CN102036153B CN102036153B (en) | 2012-12-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201110020104 Active CN102036153B (en) | 2011-01-18 | 2011-01-18 | Double-film type piezoelectric ceramic loudspeaker |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102547535A (en) * | 2012-01-20 | 2012-07-04 | 张家港市玉同电子科技有限公司 | Piezoelectricity ceramic piece and piezoelectricity ceramic loudspeaker adopting same |
| CN103152659A (en) * | 2013-02-26 | 2013-06-12 | 广东欧珀移动通信有限公司 | Piezoelectric ceramic speaker protective device and mobile terminal |
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 |
| CN201986142U (en) * | 2011-01-18 | 2011-09-21 | 张家港市玉同电子科技有限公司 | Double-film piezoelectric ceramic loudspeaker |
-
2011
- 2011-01-18 CN CN 201110020104 patent/CN102036153B/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 |
| CN201986142U (en) * | 2011-01-18 | 2011-09-21 | 张家港市玉同电子科技有限公司 | Double-film piezoelectric ceramic loudspeaker |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102547535A (en) * | 2012-01-20 | 2012-07-04 | 张家港市玉同电子科技有限公司 | Piezoelectricity ceramic piece and piezoelectricity ceramic loudspeaker adopting same |
| CN103152659A (en) * | 2013-02-26 | 2013-06-12 | 广东欧珀移动通信有限公司 | Piezoelectric ceramic speaker protective device and mobile terminal |
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| Publication number | Publication date |
|---|---|
| CN102036153B (en) | 2012-12-12 |
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