CN2071409U - Metal vibration diaphragm playback box - Google Patents
Metal vibration diaphragm playback box Download PDFInfo
- Publication number
- CN2071409U CN2071409U CN 90208117 CN90208117U CN2071409U CN 2071409 U CN2071409 U CN 2071409U CN 90208117 CN90208117 CN 90208117 CN 90208117 U CN90208117 U CN 90208117U CN 2071409 U CN2071409 U CN 2071409U
- Authority
- CN
- China
- Prior art keywords
- vibration diaphragm
- vibrating diaphragm
- woofer
- piezoelectric ceramic
- metal
- 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.)
- Withdrawn
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Abstract
The utility model discloses a metal vibration diaphragm playback sound box, comprising a tray-shaped metallic vibration diaphragm, a piezoelectric ceramic slice, a wooefer, a box body and an audio transformer. The metal vibration diaphragm playback sound box is characterized in that the tray-shaped metal vibration diaphragm has the same size with the panel of the sound box, and the center of the vibration diaphragm is glued with the piezoelectric ceramic slice to cause the vibration diaphragm to replay high-quality high pitch. The whole vibration diaphragm and the woofer are superposed, and the vibration diaphragm is provided with a plurality of air holes. Basetone replayed by the woofer is output out of the sound box through the air holes.
Description
The utility model relates to a kind of audio amplifier, particularly a kind of audio amplifier with metal vibrating diaphragm playback high-quality high pitch.
Audio amplifiers in the radio-cassette player of Xiao Shouing, and external speaker in the market etc. all adopt two or more speaker combination to form.High frequency unit wherein mostly is small-bore cone loudspeaker greatly, ball top type and horn formula are also arranged occasionally, but all because of the vibrating diaphragm area is little, material is undesirable, cause playback high pitch efficient low, and distortion is big, and directive property is narrow.And high frequency unit must take the Loudspeaker panel area, therefore selects for use the size of woofer bore to be compressed, and causes the playback bass also to be affected.
Task of the present utility model is, provides a kind of by the audio amplifier than large-area metal vibrating diaphragm high efficiency playback high pitch.Can make the high pitch of playback varied and colorful, high-fidelity, and directive property is broad.And this metal vibrating diaphragm does not take the Loudspeaker panel area again, thereby makes and can maximally utilise the audio amplifier space, selects the woofer of larger caliber for use, to improve bass tonequality.
Task of the present utility model is finished as follows: have metallic disc-shaped vibrating diaphragm, piezoelectric ceramic piece, woofer, casing, audio frequency transformer.Its characteristics are that the metallic disc-shaped vibrating diaphragm can be generally big or small with Loudspeaker panel, and the center gummed of vibrating diaphragm has piezoelectric ceramic piece, to instigate vibrating diaphragm playback high pitch.Vibrating diaphragm is provided with a plurality of pores, and whole Zhang Zhen's film is topped on Loudspeaker panel, and the bass that the woofer of the back coincidence arrangement in panel upper speaker hole sends by the pore in the metal vibrating diaphragm, is exported outside case.Piezoelectric ceramic piece is through the audio frequency transformer transforming impedance and with woofer and after connecting, the connection signal source.
Advantage of the present utility model is, can adopt larger area metal vibrating diaphragm, and the high pitch of resetting expeditiously improves directive property significantly.Particularly because high audio mostly is the metallic cord musical instrument greatly, and metal percussion instrument etc. produce, reset with the metal vibrating diaphragm, tonequality is especially true to nature.Sounding body adopts the small-sized piezoelectric potsherd, and cost is low, and is highly sensitive, and high frequency response is good.(the domestic existing production of this kind piezoelectric ceramic piece, some radio-cassette player producer directly links to each other it as high frequency unit with signal source, it is illusory that the result equals).In addition, be provided with because metallic disc-shaped vibrating diaphragm and woofer overlap, so sensitivity is higher, the audio amplifier volume can reduce relatively.Therefore it both can be used as the radio-cassette player audio amplifier, improved tonequality on the basis that reduces cost; Also can be as the wired broadcasting playback box of high tone quality, development prospect is quite wide.
The utility model will be further described below with reference to accompanying drawing.
Fig. 1 is the front elevation of the utility model concrete structure.Fig. 2 is that figure is cutd open in the side.
With reference to Fig. 1, Fig. 2, the metallic disc-shaped vibrating diaphragm 1(with good sound equipment performance can establish a few half garden connected in stars for improving the vibrating diaphragm rigidity.For the purpose of audio amplifier was attractive in appearance, vibrating diaphragm also can be square).Vibrating diaphragm is provided with a plurality of pores 2, is fixed on the panel 4 with screw 3, and vibrating diaphragm center gummed has piezoelectric ceramic piece 5, woofer 6 to be fixed on 7 li of casings, has speaker hole 8 on the cabinet panel, and audio frequency transformer 9 is equipped with in the audio amplifier bottom.
The utility model is worked as follows:
By the signal of signal source output, the one tunnel behind audio frequency transformer 9 transforming impedances, and input piezoelectric ceramic piece 5 is instigated metal vibrating diaphragm 1 playback high pitch, and another road promotes woofer 6 playback basses, exports outside case behind speaker hole 8 and metal vibrating diaphragm pore 2.
Electric wiring is with reference to Fig. 3.
Wherein L is an audio frequency transformer, and its effect is 4 to 8 ohm Low ESR with signal source output, is transformed into about 10 kilo-ohms high impedance of suitable piezoelectric ceramic piece work.Y is a piezoelectric ceramic piece, and the employing diameter is slim about 2 centimetres, can be operated in the high pitch frequency range well.D is a woofer, adopts bore at the Cushions loudspeaker more than 165 centimetres, so that bass is plentiful.
Claims (1)
- A kind of metal vibrating diaphragm playback case has metal vibrating diaphragm (1), piezoelectric ceramic piece (5), woofer (6), casing (7), audio frequency transformer (9).It is characterized in that: metal vibrating diaphragm (1) is provided with piezoelectric ceramic piece (5) and a plurality of pore (2); Vibrating diaphragm is topped on Loudspeaker panel (4); Woofer (6) and metal vibrating diaphragm (1) coincidence arrangement; Piezoelectric ceramic piece (5) is connected with signal source behind audio frequency transformer (9) transforming impedance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90208117 CN2071409U (en) | 1990-06-02 | 1990-06-02 | Metal vibration diaphragm playback box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90208117 CN2071409U (en) | 1990-06-02 | 1990-06-02 | Metal vibration diaphragm playback box |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2071409U true CN2071409U (en) | 1991-02-13 |
Family
ID=4888432
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 90208117 Withdrawn CN2071409U (en) | 1990-06-02 | 1990-06-02 | Metal vibration diaphragm playback box |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2071409U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103079159A (en) * | 2012-12-25 | 2013-05-01 | 苏州恒听电子有限公司 | Shielding casing for moving iron unit and assisted listening equipment using shielding casing |
| CN103444205A (en) * | 2011-06-29 | 2013-12-11 | 京瓷株式会社 | Acoustic generator and acoustic generation device using same |
-
1990
- 1990-06-02 CN CN 90208117 patent/CN2071409U/en not_active Withdrawn
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103444205A (en) * | 2011-06-29 | 2013-12-11 | 京瓷株式会社 | Acoustic generator and acoustic generation device using same |
| US9119003B2 (en) | 2011-06-29 | 2015-08-25 | Kyocera Corporation | Sound generator and sound-generating apparatus |
| CN103444205B (en) * | 2011-06-29 | 2016-06-29 | 京瓷株式会社 | Acoustic generator and employ the generating device of this acoustic generator |
| CN103079159A (en) * | 2012-12-25 | 2013-05-01 | 苏州恒听电子有限公司 | Shielding casing for moving iron unit and assisted listening equipment using shielding casing |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |