CN2744101Y - Phase reversal type sound box - Google Patents
Phase reversal type sound box Download PDFInfo
- Publication number
- CN2744101Y CN2744101Y CN 200420091882 CN200420091882U CN2744101Y CN 2744101 Y CN2744101 Y CN 2744101Y CN 200420091882 CN200420091882 CN 200420091882 CN 200420091882 U CN200420091882 U CN 200420091882U CN 2744101 Y CN2744101 Y CN 2744101Y
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- Prior art keywords
- phase
- reversing tube
- fixed
- casing
- tube
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- 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
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- 238000013016 damping Methods 0.000 claims abstract description 20
- 239000003292 glue Substances 0.000 claims abstract description 9
- 238000007789 sealing Methods 0.000 claims abstract description 5
- 230000000694 effects Effects 0.000 abstract description 11
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 238000010276 construction Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- IXSZQYVWNJNRAL-UHFFFAOYSA-N etoxazole Chemical compound CCOC1=CC(C(C)(C)C)=CC=C1C1N=C(C=2C(=CC=CC=2F)F)OC1 IXSZQYVWNJNRAL-UHFFFAOYSA-N 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 230000003313 weakening effect Effects 0.000 description 1
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Abstract
The utility model relates to a phase inversion formula audio amplifier. It includes a sound box body, a loudspeaker fixed on the sound box body and an inverter tube, on the inverter tube a hole is cut. Furthermore, both ends of the inverter tube are fixed to the case in a bell mouth structure. Or the other end of the inverter tube is fixed with the box body in a sealing way through a buffer pad. The box body is internally fixed with a plurality of phase reversal tubes with two ends fixed with the box body and holes on the phase reversal tubes. The inner wall of the phase-reversing tube is provided with a continuous spiral groove. The horn-shaped outlet surface of the inverter tube is adhered with a dot-shaped projection formed by damping glue. The phase inversion type loudspeaker box has the advantages that the structure is improved, the structure is simplified, the cost is reduced, and the manufacturing process is simplified compared with the existing phase inversion type loudspeaker box under the effect of basically the same effect. Meanwhile, the tone quality of the sound box is improved to a certain extent.
Description
Technical field
The utility model relates to audio amplifier, is specially a kind of phase inverted cabinet.
Background technology
Phase inverted cabinet comprises sound box, is fixed in loud speaker and phase-reversing tube on the casing.The sound wave that loud speaker sends to cabinets cavity sends to the casing place after the phase-reversing tube paraphase, and the sound wave of special frequency channel is strengthened.The paraphase frequency is relevant with the length and the sectional dimension of phase-reversing tube.
Phase-reversing tube in the existing phase inverted cabinet all is a cantilever type, and promptly phase-reversing tube has only an end and casing to fix; And phase-reversing tube has only both ends open, and after the length of phase-reversing tube and sectional dimension were determined, it can only carry out paraphase to a certain definite frequency range sound wave; To carry out paraphase to the sound wave of a plurality of frequency ranges, in casing, a plurality of phase-reversing tubes will be set, make loudspeaker box structure complexity, cost up.
Existing phase inverted cabinet produces the casing vibration, influence tonequality for avoiding, and in sound box baroque supporting construction will be set, to avoid or casing when reducing audio amplifier and working vibrates.Supporting construction makes loudspeaker box structure further complicated, and cost further increases.
Audio amplifier is when big acoustic pressure, and the interior wall friction that sound wave air-flow and phase-reversing tube are smooth can produce airflow noise.Carry out airflow noise when avoiding big acoustic pressure, adopt the phase-reversing tube of variable cross-section at interval, the i.e. pipeline section that the compartment of terrain has sectional dimension to increase on the phase-reversing tube in the existing phase inverted cabinet; Pit or radial groove perhaps are set on the horn-like exit surface of phase-reversing tube, eliminate or airflow noise when weakening big acoustic pressure with this.The phase-reversing tube of this interval variable cross-section and pit or radial groove are set on the horn-like exit surface of phase-reversing tube, it is complicated that it adds technology.
Summary of the invention
The utility model provides a kind of improved phase inverted cabinet at above-mentioned defective and problem that existing phase inverted cabinet structurally exists.
The utility model is to adopt following technical scheme to realize: phase inverted cabinet, and comprise sound box, be fixed in loud speaker and phase-reversing tube on the casing, on phase-reversing tube, have the hole.Sound wave respectively from the hole and the phase-reversing tube port enter phase-reversing tube the pipe range difference of phase-reversing tube because the two-way sound wave is flowed through, hole and phase-reversing tube port can carry out paraphase to the sound wave of two different frequency ranges to be selected, promptly phase-reversing tube is realized the sound wave paraphase to two different frequency ranges.Under the situation that does not increase phase-reversing tube, widened the paraphase band limits of phase-reversing tube.Simplify loudspeaker box structure, improved the tonequality of audio amplifier.Hole institute open position difference on the phase-reversing tube, the paraphase frequency range of its selection is difference to some extent.Hole on the phase-reversing tube also can be made into Zhi Guanzhuan, and effect is identical.
The two ends of phase-reversing tube are all fixed with horn mouth structure and casing.The cantilever end that is about to existing cantilever type phase-reversing tube is fixed with fixed structure identical with the other end and casing.The sound wave that hole from phase-reversing tube enters is to the shunting of phase-reversing tube two ends, because the hole is different to the distance at phase-reversing tube two ends, so can be to the sound wave paraphase of two different frequency ranges.The band limits of the determining positions paraphase in hole.This further improvement to the phase-reversing tube structure not only can realize the two-band paraphase, increase the paraphase band limits, and because the phase-reversing tube two ends are all fixed with casing, itself casing be played a supporting role, and can avoid the audio amplifier vibration.
The casing internal fixation has that a plurality of two ends and casing are fixed, the phase-reversing tube of perforate on it.Not only can increase the paraphase band limits more fully, and the support effect in the casing is better, need not to be provided with specially in casing supporting construction again.Make phase-reversing tube have double action.Help simplifying loudspeaker box structure.
Have continuous helicla flute at the phase-reversing tube inwall.Airflow noise when reducing big acoustic pressure with this.Inwall has the easier processing of phase-reversing tube of the more existing interval of spiral fluted phase-reversing tube variable cross-section, but can play the effect that reduces airflow noise equally.
On the horn-like exit surface of phase-reversing tube, be stained with the point-like projection (or continuous, discontinuous strip projected parts) that forms by damping glue.Further reduce the generation of airflow noise with this.Spraying damping glue point-like projection is more existing to be provided with pit or radial groove to add technology simpler on the horn-like exit surface of phase-reversing tube, easier realization is to simplify the manufacture craft of audio amplifier.Described damping glue is existing known products, on the market or specialized factory on sale.
Phase inverted cabinet described in the utility model is by architecture advances, compares with existing phase inverted cabinet having under the essentially identical effect, simplifies the structure, reduced cost, simplified manufacture craft.Simultaneously, the tonequality of audio amplifier improves to a certain extent and improves.
Description of drawings
Fig. 1 is the structural representation of phase inverted cabinet described in the utility model;
Fig. 2 is second kind of further structural representation of the utility model;
Fig. 3 is the third further structural representation of the utility model;
Fig. 4 is the 4th kind of further structural representation of the utility model;
Fig. 5 is a phase-reversing tube internal structure schematic diagram;
Embodiment
Embodiment 1 (seeing accompanying drawing 1)
Phase inverted cabinet comprises sound box 1, is fixed in loud speaker 2 and phase-reversing tube 3 on the casing, has hole 4 on phase-reversing tube 3.Hole 4 also can be made into Zhi Guanzhuan.
Have continuous helicla flute 5 at the phase-reversing tube inwall.
On the horn-like exit surface of phase-reversing tube, be stained with the point-like projection 6 that forms by damping glue.
Embodiment 2 (seeing accompanying drawing 2)
Phase inverted cabinet comprises sound box 1, is fixed in loud speaker 2 and phase-reversing tube 3 on the casing, has hole 4 on phase-reversing tube 3.The two ends of phase-reversing tube 3 are all fixed with horn mouth structure and casing.
Have continuous helicla flute 5 at the phase-reversing tube inwall.
On the horn-like exit surface of phase-reversing tube, be stained with the point-like projection 6 that forms by damping glue.
Embodiment 3 (seeing accompanying drawing 3)
Phase inverted cabinet comprises sound box 1, is fixed in loud speaker 2 and phase-reversing tube 3 on the casing, has hole 4 on phase-reversing tube 3.The other end of phase-reversing tube 3 is fixing with the casing sealing by cushion pad 7 (as rubber blanket).Cushion pad and casing are fixed (cementation or other fixed form), and the other end of phase-reversing tube is fixed (endoporus on the cushion pad is inserted in cementation or sealing) again with cushion pad.Present embodiment with implement 2 and compare, though lost the effect of dual paraphase frequency range,, be connected and fixed high resilience between phase-reversing tube and casing because an end fixes by cushion pad and casing, more help the vibration damping of casing.Simultaneously, the closed inner chamber of phase-reversing tube one side forms the helmholtz resonance chamber, can absorb or weaken the standing wave in the casing, to improving audio amplifier tonequality certain effect is arranged.
Cementation has buffer gasket 10 (as rubber ring) on the inner wall edge of the phase-reversing tube of sound box outlet, is fixed with locating ring 11, locating ring 11 and buffer gasket 10 fixing (cementation or screw) on the outer wall of the flared end of phase-reversing tube.The flared end of phase-reversing tube can further reduce the vibration of phase-reversing tube and casing by the elastic buffer effect of the fixed structure and the buffer gasket of buffer gasket and locating ring.
Have continuous helicla flute 5 at phase-reversing tube (opposite side) inwall.
On the horn-like exit surface of phase-reversing tube (opposite side), be stained with the point-like projection 6 that forms by damping glue.
Phase inverted cabinet comprises sound box 1, is fixed in loud speaker 2 and phase-reversing tube 3 on the casing, has hole 4 on phase-reversing tube 3.The casing internal fixation has that a plurality of two ends and casing are fixed, the phase-reversing tube of perforate on it (can be that two ends are all fixed with horn mouth structure and casing, also can be the other end passes through cushion pad 7 fixing as rubber blanket and casing sealing).This execution mode can further be strengthened the support effect of box house, increases the paraphase band limits simultaneously more fully.
Each phase-reversing tube inwall has continuous helicla flute 5.
Be stained with the point-like projection 6 that forms by damping glue on the horn-like exit surface of each phase-reversing tube.
Between phase-reversing tube, be provided with the damping block 8 that two ends are connected and fixed by Flexible Connector (as rubber band) and phase-reversing tube.Flexible Connector and damping block are used to absorb or consume the interior standing wave of casing, and it is unbalanced to reduce the interior acoustic pressure of casing, are beneficial to the operate as normal of loud speaker, reduce the vibration of casing simultaneously.
In phase-reversing tube external stability damping sheet 9 is arranged.Produce vibration under the standing wave effect of damping sheet in casing, can absorb or consume the standing wave in the casing further.
The structure of Flexible Connector, damping block and damping sheet also is applicable in the embodiment 1 described execution mode.Promptly in embodiment 1, can be provided with the cantilever phase-reversing tube of a plurality of perforates on it, damping sheet and damping block are set on each phase-reversing tube and between the phase-reversing tube.
Claims (10)
1, a kind of phase inverted cabinet comprises sound box (1), is fixed in loud speaker (2) and phase-reversing tube (3) on the casing, it is characterized by: have hole (4) on phase-reversing tube (3).
2, phase inverted cabinet as claimed in claim 1 is characterized by: the two ends of phase-reversing tube (3) are all fixed with horn mouth structure and casing.
3, phase inverted cabinet as claimed in claim 1 is characterized by: the other end of phase-reversing tube (3) is fixing with the casing sealing by cushion pad (7).
4, as claim 2 or 3 described phase inverted cabinets, it is characterized by: the casing internal fixation has that a plurality of two ends and casing are fixed, the phase-reversing tube of perforate on it.
5, as claim 1 or 2 or 3 described phase inverted cabinets, it is characterized by: have continuous helicla flute (5) at the phase-reversing tube inwall.
6, phase inverted cabinet as claimed in claim 4 is characterized by: have continuous helicla flute (5) at the phase-reversing tube inwall.
7, as claim 1 or 2 or 3 described phase inverted cabinets, it is characterized by: on the horn-like exit surface of phase-reversing tube, be stained with the point-like projection (6) that forms by damping glue.
8, phase inverted cabinet as claimed in claim 4 is characterized by: be provided with the damping block (8) that two ends are connected and fixed by Flexible Connector and phase-reversing tube between phase-reversing tube.
9, as claim 1 or 2 or 3 or 6 or 8 described phase inverted cabinets, it is characterized by: damping sheet (9) is arranged in phase-reversing tube external stability.
10, as claim 1 or 2 or 3 described phase inverted cabinets, it is characterized by: cementation has buffer gasket (10) on the inner wall edge of the phase-reversing tube of sound box outlet, be fixed with locating ring (11) on the outer wall of the flared end of phase-reversing tube, locating ring (11) is fixing with buffer gasket (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420091882 CN2744101Y (en) | 2004-09-30 | 2004-09-30 | Phase reversal type sound box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420091882 CN2744101Y (en) | 2004-09-30 | 2004-09-30 | Phase reversal type sound box |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2744101Y true CN2744101Y (en) | 2005-11-30 |
Family
ID=35634118
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420091882 Expired - Fee Related CN2744101Y (en) | 2004-09-30 | 2004-09-30 | Phase reversal type sound box |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2744101Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105049981A (en) * | 2014-04-30 | 2015-11-11 | 松下知识产权经营株式会社 | Speaker system |
| CN105263082A (en) * | 2015-11-25 | 2016-01-20 | 成都优逸工业设计有限公司 | Sound leading tube |
| CN106303771A (en) * | 2015-05-28 | 2017-01-04 | 迪芬尼香港有限公司 | Omnidirectional's reflex cabinet structure |
-
2004
- 2004-09-30 CN CN 200420091882 patent/CN2744101Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105049981A (en) * | 2014-04-30 | 2015-11-11 | 松下知识产权经营株式会社 | Speaker system |
| CN105049981B (en) * | 2014-04-30 | 2019-10-15 | 松下知识产权经营株式会社 | Speaker system |
| CN106303771A (en) * | 2015-05-28 | 2017-01-04 | 迪芬尼香港有限公司 | Omnidirectional's reflex cabinet structure |
| CN105263082A (en) * | 2015-11-25 | 2016-01-20 | 成都优逸工业设计有限公司 | Sound leading tube |
| CN105263082B (en) * | 2015-11-25 | 2019-06-04 | 西华大学 | Sound conducting tube |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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 |