CN2482302Y - Inverse phase loudspeaker box with sealed loudspeaker box structure - Google Patents
Inverse phase loudspeaker box with sealed loudspeaker box structure Download PDFInfo
- Publication number
- CN2482302Y CN2482302Y CN 00253333 CN00253333U CN2482302Y CN 2482302 Y CN2482302 Y CN 2482302Y CN 00253333 CN00253333 CN 00253333 CN 00253333 U CN00253333 U CN 00253333U CN 2482302 Y CN2482302 Y CN 2482302Y
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- CN
- China
- Prior art keywords
- cone
- loudspeaker
- phase inverted
- audio amplifier
- sound
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- Expired - Fee Related
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- Obtaining Desirable Characteristics In Audible-Bandwidth Transducers (AREA)
Abstract
The utility model relates to a phase inverted type loudspeaker enclosure with a sealed type structure. The default of the existing phase inverted type loudspeaker enclosure is that the paper cone amplitude of the pager cone loudspeaker is very big, and the low sound frequency range under the resonant frequency increases the harmonic distortion of the phase inverted type loudspeaker enclosure. The utility model utilizes a dual-cone loudspeaker which comprises a phase inverted type loudspeaker enclosure and a sealed type loudspeaker enclosure, and not only utilizes the vibrating membrane of the sealed type loudspeaker enclosure to enhance the low frequency response of the of the phase inverted type loudspeaker enclosure, but also utilizes the sealing air of the sealed type loudspeaker to limit the amplitude of the vibrating membrane of the phase inverted type loudspeaker enclosure, thus the low frequency harmonic distortion of the phase inverted type loudspeaker enclosure is decreased.
Description
The utility model belongs to a kind of audio amplifier in electroacoustic transducer field, is by voice unit, and compositions such as double-sound cone loudspeaker, the casing of band phase-reversing tube, airtight casing are a kind of phase inverted cabinets with closed loudspeaker box structure.
Phase inverted cabinet and closed audio amplifier are two kinds of multi-form audio amplifiers, all are independent separately the existence in actual applications, always are divided into different classes of at minute time-like.Phase inverted cabinet is made of cone loudspeaker, the casing that has a phase-reversing tube, and cone vibrating diaphragm by cone loudspeaker and phase-reversing tube are to phase inverting box external radiation sound.The closed audio amplifier is made of cone loudspeaker, airtight casing, and the cone vibrating diaphragm by cone loudspeaker is to closed box external radiation sound.The low frequency of phase inverted cabinet output acoustic pressure is than the low frequency output acoustic pressure height of the closed audio amplifier that uses identical cone loudspeaker, but phase inverted cabinet is at its low audio frequency range below resonance frequency, and the vibrating diaphragm amplitude of cone loudspeaker increases, and has increased the harmonic distortion of audio amplifier.The closed audio amplifier is at its low audio frequency range below resonance frequency, and the vibrating diaphragm amplitude of cone loudspeaker is subjected to the restriction of air chamber in the closed box.
The cone loudspeaker audio amplifier wants to increase low-frequency sound pressure, the amplitude that needs to increase the radius of vibrating diaphragm or increase vibrating diaphragm, but the radius of increase vibrating diaphragm can reduce the output characteristic of high audio frequency range, and the amplitude that increases vibrating diaphragm can increase harmonic distortion.
Task to be solved in the utility model is near the low-frequency sound pressure lifting phase inverted cabinet resonance frequency under the situation of the high audio frequency characteristics that does not influence phase inverted cabinet, and the following vibrating diaphragm amplitude of restriction phase inverted cabinet resonance frequency reduces harmonic distortion.
For solving above-mentioned task, the solution that the utility model adopts is: used a double-sound cone loudspeaker and a phase inverted cabinet of casing composition that has phase-reversing tube, formed a closed audio amplifier with another airtight casing.The sound of the vibrating diaphragm of closed audio amplifier radiation in phase inverted cabinet radiate by phase-reversing tube with the sound of the vibrating diaphragm back side institute radiation of phase inverted cabinet, has strengthened the low-frequency sound pressure of phase inverted cabinet.Utilize the vibrating diaphragm amplitude of the air chamber restriction closed audio amplifier in the closed audio amplifier, because the vibrating diaphragm of closed audio amplifier and the vibrating diaphragm of phase inverted cabinet are connected the two ends of same speech coil framework, limit a vibrating diaphragm amplitude, another vibrating diaphragm amplitude has also been played restriction.
When the utility model has strengthened low-frequency sound pressure than existing phase inverted cabinet, do not increase the radius of vibrating diaphragm, do not increase the amplitude of vibrating diaphragm yet, and utilized the amplitude of a closed audio amplifier restriction vibrating diaphragm, also just equal to have had the high frequency characteristics of phase inverted cabinet and than phase inverting box harmonic distortion still less.
The preceding voice coil loudspeaker voice coil of the double-sound cone loudspeaker that the utility model is used, the opposite electric current of back voice coil loudspeaker voice coil input direction produce equidirectional electromagnetic force, promote the vibration of double-tone circle, by speech coil framework vibration cone, shake and penetrate sound.The magnetic field of closing that near the dissymmetrical magnetic field of two magnetic gaps of voice coil loudspeaker voice coil produces is symmetry magnetic field, the harmonic distortion when reducing the voice coil loudspeaker voice coil large amplitude.
The speech coil framework of the double-sound cone loudspeaker that the utility model is used is fixed with preceding centring disk, back centring disk, can increase the lateral stability of vibrational system.
Below in conjunction with accompanying drawing the utility model embodiment is described in further detail.Fig. 1 is the double-sound cone loudspeaker structure chart that the utility model is used; Fig. 2 is a structure chart of the present utility model.
In structure chart shown in Figure 1, the diaphragm of loudspeaker is preceding cone (1), back cone (12).Ring (8) is supported before the outer cause of preceding cone (1), the central part of preceding cone (1) is supported by preceding centring disk (6), ring (10) is supported after the outer cause of back cone (12), the central part of back cone (12) is supported by back centring disk (11), the shape of double folding ring and two centring disks makes them be easy to motion at the cone direction of vibration, and has favorable rigidity in vertical with it direction.Ring plays sealing, damping and support.Before cover on cone (1) centre bore be called dust cover (5), it is worked as the part of vibrating diaphragm, and plays dustproof effect.Stream has the preceding voice coil loudspeaker voice coil (3) of rightabout audio-frequency current, and back voice coil loudspeaker voice coil (14) is on speech coil framework (18), and preceding cone (1) core is mutually bonding with speech coil framework (18) front end, and back cone (12) core is mutually bonding with speech coil framework (18) rear end.Above these parts be referred to as vibrational system, be very part and parcel of loud speaker.
Another important component part of loud speaker is to supply with the magnetic circuit of voice coil loudspeaker voice coil magnetic flux.Preceding voice coil loudspeaker voice coil (3) is arranged in the magnetic gap that forms between preceding magnetic conductive board (19) and the conducting magnetic column (4), back voice coil loudspeaker voice coil (14) is arranged in the magnetic gap that forms between back magnetic conductive board (16) and the conducting magnetic column (4), supplies with magnetic flux by magnet (17) by preceding magnetic conductive board (19), back magnetic conductive board (16) and conducting magnetic column (4).The relative position of conducting magnetic column (4) and preceding magnetic conductive board (19), back magnetic conductive board (16) is kept by conducting magnetic column support (13) and back basin frame (9).The relative position of magnetic circuit and vibrational system is kept by preceding basin frame (7) and back basin frame (9).With the weld tabs welding, back voice coil loudspeaker voice coil (14) welds with weld tabs by the back lead-out wire (15) of softness preceding voice coil loudspeaker voice coil (3) by soft preceding lead-out wire (2).
In structure chart shown in Figure 2, the preceding cone (1) of double-sound cone loudspeaker is as vibrating diaphragm and the phase-reversing tube (10) and casing (6) the formation phase inverted cabinet (9) of phase inverted cabinet.The back cone (7) of double-sound cone loudspeaker as the vibrating diaphragm of closed audio amplifier be fixed on the back basin frame outer cover (2) on the back basin frame (8), back basin frame outer cover phonocatheter (3) and casing (6) formation closed audio amplifier (5) with conduction sound effect to closed audio amplifier (5) in airtight effect.Voice unit (4) on phase inverted cabinet (9), closed audio amplifier (5) and the casing (6) is formed the phase inverted cabinet with closed loudspeaker box structure.
Claims (6)
1, a kind of phase inverted cabinet with closed loudspeaker box structure, constitute by a phase inverted cabinet and a closed audio amplifier, it is characterized in that: used a double-sound cone loudspeaker and a casing that has phase-reversing tube is in the same place with an airtight box body combinations, constituted a audio amplifier with phase inverted cabinet structure and closed loudspeaker box structure.
2, audio amplifier according to claim 1, the vibrating diaphragm that it is characterized in that phase inverted cabinet are the preceding cone of double-sound cone loudspeaker, can be to phase inverted cabinet external radiation sound.
3, audio amplifier according to claim 1, the vibrating diaphragm that it is characterized in that the closed audio amplifier is the back cone of double-sound cone loudspeaker, with back basin frame outer cover, back basin frame outer cover phonocatheter and an airtight closed audio amplifier of casing composition, can be in phase inverted cabinet radiation sound.
4, audio amplifier according to claim 1 is characterized in that the preceding cone of double-sound cone loudspeaker is connected preceding ring and speech coil framework front end, and back cone is connected back ring and speech coil framework rear end.
5, audio amplifier according to claim 1 is characterized in that the preceding centring disk of double-sound cone loudspeaker is connected preceding basin frame and speech coil framework front end, and back centring disk is connected back basin frame and speech coil framework rear end.
6, audio amplifier according to claim 1 is characterized in that the preceding voice coil loudspeaker voice coil of double-sound cone loudspeaker, and the audio-frequency current direction of back voice coil loudspeaker voice coil input is opposite.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00253333 CN2482302Y (en) | 2000-12-05 | 2000-12-05 | Inverse phase loudspeaker box with sealed loudspeaker box structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00253333 CN2482302Y (en) | 2000-12-05 | 2000-12-05 | Inverse phase loudspeaker box with sealed loudspeaker box structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2482302Y true CN2482302Y (en) | 2002-03-13 |
Family
ID=33610805
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 00253333 Expired - Fee Related CN2482302Y (en) | 2000-12-05 | 2000-12-05 | Inverse phase loudspeaker box with sealed loudspeaker box structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2482302Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103888878A (en) * | 2014-04-09 | 2014-06-25 | 上海依镓人电气科技有限公司 | Three-dimensional wave coaxial motor-driven loudspeaker |
| CN117156359A (en) * | 2023-10-31 | 2023-12-01 | 苏州上声电子股份有限公司 | Double-cone loudspeaker, assembly method thereof and automobile sound system |
-
2000
- 2000-12-05 CN CN 00253333 patent/CN2482302Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103888878A (en) * | 2014-04-09 | 2014-06-25 | 上海依镓人电气科技有限公司 | Three-dimensional wave coaxial motor-driven loudspeaker |
| CN103888878B (en) * | 2014-04-09 | 2018-02-02 | 上海依镓人电气科技有限公司 | The three-dimensional coaxial dynamic loudspeaker of ripple |
| CN117156359A (en) * | 2023-10-31 | 2023-12-01 | 苏州上声电子股份有限公司 | Double-cone loudspeaker, assembly method thereof and automobile sound system |
| CN117156359B (en) * | 2023-10-31 | 2024-02-27 | 苏州上声电子股份有限公司 | Double-cone loudspeaker, assembly method thereof and automobile sound system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C57 | Notification of unclear or unknown address | ||
| DD01 | Delivery of document by public notice |
Addressee: Yan Ming Document name: Notification of Termination of Patent Right |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20020313 |