CN103428604A - Loudspeaker box - Google Patents
Loudspeaker box Download PDFInfo
- Publication number
- CN103428604A CN103428604A CN2012101597010A CN201210159701A CN103428604A CN 103428604 A CN103428604 A CN 103428604A CN 2012101597010 A CN2012101597010 A CN 2012101597010A CN 201210159701 A CN201210159701 A CN 201210159701A CN 103428604 A CN103428604 A CN 103428604A
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- CN
- China
- Prior art keywords
- audio amplifier
- guide tube
- opening
- sound guide
- chamber
- 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.)
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Abstract
The invention relates to a loudspeaker box which comprises a box body and a loudspeaker which is arranged in the box body. A containing cavity and a voice cavity communicated with the containing cavity are formed in the box body. The loudspeaker is contained in the containing cavity. A voice conducting tube is formed in the voice cavity and provided with a first end and a second end. The first end is provided with a first opening which communicates the voice conducting tube with the voice cavity. The second end is provided with a second opening which communicates the voice conducting tube with the outside. The first opening is provided with a buffering cavity. A channel is formed in the buffering cavity in a penetrating mode and comprises an exit communicated with the voice conducting tube and an entrance facing the first opening. At least one place of the channel is narrower than the entrance of the channel. The loudspeaker box can reduce noise generated in the voice conducting tube and improve the tone quality effect.
Description
Technical field
The present invention relates to a kind of audio amplifier, relate in particular to a kind of audio amplifier for the sound equipment field.
Background technology
In existing audio amplifier, usually can in its casing, sound guide tube be set, so that the sound wave that the loud speaker rear side sends spreads out of through this sound guide tube the sound wave sent with the loud speaker front side is superimposed, thereby strengthen the low-frequency effect of audio amplifier again.Yet, when the air-flow in casing is advanced in sound guide tube, if flow velocity is very fast, easily and between sound guide tube strong friction occurs, thereby produce noise, affect the pronunciation quality of audio amplifier.
Summary of the invention
In view of this, be necessary to provide a kind of audio amplifier that reduces noise.
A kind of audio amplifier, comprise casing and be located at the loud speaker in described casing, the sound chamber that is formed with host cavity in described casing and is connected with described host cavity, described loud speaker is contained in described host cavity, described sound is formed with sound guide tube in chamber, described sound guide tube has first end and the second end, described first end place is provided with the first opening so that described sound guide tube is connected with described sound chamber, described the second end place is provided with the second opening so that described sound guide tube is connected with the external world, described the first opening part is provided with cushion chamber, form the passage connected in cushion chamber, passage comprises that the outlet be communicated with sound guide tube reaches the entrance towards the first opening, at least one place of passage narrows with respect to its entrance.
Compare prior art, in above-mentioned audio amplifier, the first opening part by the first end at sound guide tube arranges cushion chamber, the passage that cushion chamber narrows can slow down the flow velocity that is entered the air-flow in sound guide tube by the sound chamber, to reduce because the noise that friction produces occurs between this air-flow and sound guide tube, thereby reach the effect that promotes audio amplifier pronunciation quality.
The accompanying drawing explanation
The three-dimensional assembly diagram that Fig. 1 is audio amplifier the first embodiment of the present invention.
The exploded view that Fig. 2 is audio amplifier shown in Fig. 1.
The inversion figure that Fig. 3 is the protecgulum in audio amplifier shown in Fig. 2.
The assembly drawing that Fig. 4 is the bonnet in audio amplifier shown in Fig. 2 and cover plate, wherein upper cover and cushion chamber are not shown.
The inversion figure that Fig. 5 is the bonnet in audio amplifier shown in Fig. 2.
The profile that Fig. 6 is the cushion chamber in Fig. 2.
The profile of the cushion chamber of the audio amplifier that Fig. 7 is second embodiment of the invention.
The profile of the cushion chamber of the audio amplifier that Fig. 8 is third embodiment of the invention.
The main element symbol description
| |
100 |
| |
10 |
| |
11 |
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111 |
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112 |
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113 |
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1131 |
| |
1132 |
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114 |
| The first dividing |
1150 |
| |
1152 |
| The 3rd dividing |
1154 |
| The 4th dividing |
1156 |
| |
116 |
| The first leading |
1161 |
| The second leading |
1162 |
| The 3rd leading |
1163 |
| |
117 |
| The |
118 |
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12 |
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121 |
| |
122 |
| |
123 |
| |
1231 |
| |
1232 |
| Through |
124 |
| |
13 |
| The |
130 |
| Groove | 131 |
| |
14、14a、14b |
| Side plate | 140、 |
| Base plate | |
| 141a | |
| Passage | 142、142a、142b |
| Entrance | 144、144a |
| Outlet | 146 |
| |
146a |
| Cushion pad | 148 |
| |
20 |
| |
21 |
Following embodiment further illustrates the present invention in connection with above-mentioned accompanying drawing.
Embodiment
Fig. 1 and Figure 2 shows that the audio amplifier 100 of first embodiment of the invention.This audio amplifier 100 comprises a casing 10 and is located at the loud speaker 20 in this casing 10.
This casing 10 is longitudinal, comprises a lower cover 11 and the upper cover 12 combined with this lower cover 11.Described lower cover 11 all is semiclosed shape with upper cover 12.
Please consult Fig. 4 and Fig. 5, this lower cover 11 comprises a diapire 111 and by the upwardly extending sidewall 112 of the periphery of this diapire 111 simultaneously.This sidewall 112 surrounds and forms a lower chamber 113 with diapire 111.Near the chamber of sound once 1132 that this lower chamber 113 comprises the host cavity once 1131 for accommodating loud speaker 20 and is positioned at this time host cavity 1131 and is connected with this time host cavity 1131.The inner surface of this diapire 111 is provided with a support portion 114 in this time host cavity 1131, and in order to support speaker 20, this support portion 114 is cross.Be provided with the some dividing plates 1150,1152,1154,1156 that are connected with diapire 111 and sidewall 112 in this time sound chamber 1132.The upper end cover of described dividing plate 1150,1152,1154,1156 is provided with a cover plate 13, and jointly surrounds shape one sound guide tube 116 by the diapire 111 of described dividing plate 1150,1152,1154,1156, lower cover 11 with sidewall 112 and cover plate 13.These dividing plates 1150,1152,1154,1156 comprise one first dividing plate 1150, a second partition 1152 parallel with the first dividing plate 1150, perpendicular to one the 3rd dividing plate 1154 and one four dividing plate 1156 parallel with the 3rd dividing plate 1154 of the first dividing plate 1150.Vertical right-hand member and the rear wall 112 that connects the 3rd dividing plate 1154 of the first dividing plate 1150; Second partition 1152 connects middle part and the front side wall 112 of the 3rd dividing plate 1154; The left end of the 3rd dividing plate 1154 and left side wall 112 separate gap; Right-hand member and the first dividing plate 1150 that the left end of the 4th dividing plate 1156 connects left side wall 112, the four dividing plates 1156 separate gap.Thus, formed roundabout shape by these dividing plates 1150,1152,1154,1156 every the sound guide tube 116 of establishing formation.Sound guide tube 116 comprises at the first leading note groove 1161 between front side wall 112 and the 3rd dividing plate 1154, the second leading note groove 1162 between the 3rd dividing plate 1154 and the 4th dividing plate 1156 and the 3rd leading note groove 1163 between the 4th dividing plate 1156 and rear wall 112.This first leading note groove 1161 is communicated with the second leading note groove 1162 with the gap between left side wall 112 by the 3rd dividing plate 1154, and this second leading note groove 1162 is by the gap conducting between the 4th dividing plate 1156 and the first dividing plate 1150.This first leading note groove 1161, the second leading note groove 1162 and the 3rd leading note groove 1163 are parallel to each other.The length of the second leading note groove 1162 and the 3rd leading note groove 1163 equal in length, and be greater than the length of the first leading note groove 1161.
See also Fig. 6, sound guide tube 116 has a first end 117 of close second partition 1152 and one second end 118 of close left side wall 112.This cover plate 13 is covered on these dividing plates 1150,1152,1154,1156, and leaves one first opening 130 (as Fig. 4) in first end 117 places of this sound guide tube 116, with the first end 117 by this sound guide tube 116, with this time sound chamber 1132, is connected.This diapire 111 is provided with shown in one second opening 119(Fig. 5 in the second end 118 places of this sound guide tube 116), with the second end 118 by this sound guide tube 116, with the outside of casing 10, be connected.Described the first opening 130 and the second opening 119 are all rectangular.One cushion chamber 14 is arranged at the interior position near the first opening 130 of sound guide tube 116.This cushion chamber 14 roughly is funnel-form, and it is engaged and formed by some side plates 140.This cushion chamber 14 is all rectangular along the cross section of any level face.The external diameter of this cushion chamber 14 first reduces to increase gradually along direction from top to bottom gradually again.The bottom of this cushion chamber 14 and the width at top all are less than the width of sound guide tube 116 first leading note grooves 1161, to be contained in sound guide tube 116.The height of cushion chamber 14 and sound guide tube 116 are equal to or slightly less than the height of sound guide tube 116, with to be contained in sound guide tube 116 unlikely protruding upward when interior.The passage 142 of a up/down perforation is offered in cushion chamber 14 inside.The diameter of this passage 142 first reduces to increase gradually along direction from top to bottom gradually again, and forms an entrance 144 at the top of cushion chamber 14.This entrance 144 is towards the first opening 130, and is communicated with the first opening 130.Cushion chamber 14 is offered an outlet 146 at its side plate 140 near the position of bottom.The the first leading note groove 1161 that is placed in sound guide tube 116 when cushion chamber 14 is when interior, and the bottom of cushion chamber 14 contacts with the diapire 111 of lower cover 11, and entrance 144, over against the first opening 130, exports 146 and is communicated with towards left side wall 112 and with the first leading note groove 1161.
As shown in Fig. 2 and 3, this upper cover 12 comprises a roof 121 and the sidewall 122 extended towards lower cover 11 by the periphery of this roof 121, this roof 121 surrounds and forms a upper cavity 123 with sidewall 122, this upper cavity 123 comprise for accommodate loud speaker 20 one on host cavity 1231 and the sound chamber 1232 on that is connected with upper host cavity 1231.Should upper host cavity 1231 and upper sound chamber 1232 respectively with lower host cavity 1131 and the 1132 corresponding settings of lower sound chamber, the position of this roof 121 host cavity 1231 on correspondence offers the through hole 124 of a circle.
During assembling, this upper cover 12 combines to form casing 10 with lower cover 11, and jointly forms a host cavity of this casing 10 by host cavity on this 1231 and lower host cavity 1131, so that this loud speaker 20 is contained in this host cavity.Jointly form a sound chamber of this casing 10 by sound chamber on this 1232 and lower sound chamber 1132.This sound chamber is positioned at a side of loud speaker 20, produces resonance in this sound chamber for the sound sent by loud speaker 20 rear sides.This loud speaker 20 is contained in the host cavity of this casing 10 and to arranging by through hole 124.This loud speaker 20 has a front end (being provided with an end of vibrating diaphragm 21) and a rear end, the rear end of this loud speaker 20 is resisted against on the support portion 114 of this lower cover 11, the periphery of the front end of this loud speaker 20 is resisted against on the roof 121 of this upper cover 12, and exposes through this through hole 124.
During work, these loud speaker 20 vibrating diaphragms 21 produce vibration and send sound wave with the front end at loud speaker 20 and rear end simultaneously, the sound wave sent from the front end of loud speaker 20 is directly propagated to the external world through this through hole 124, the sound wave sent by the rear end of this loud speaker 20 enters in the sound chamber of casing 10 and produces resonance, and entered in sound guide tube 116 by the first opening 130, after propagating, sound guide tube 116 is sent to the external world by the second opening 119.Above-mentionedly be sent to extraneous sound wave by through hole 124 and the second opening 119 respectively and mutually superpose, can increase the low-frequency effect of this audio amplifier 100.
In above-mentioned audio amplifier 100, the first opening 130 places by the first end 117 at sound guide tube 116 are provided with cushion chamber 14, and in the middle of it, the wide passage 142 in narrow two ends can effectively slow down the flow velocity that is entered the air-flow in sound guide tube 116 by the sound chamber.Air-flow is because passage 142 narrows after the entrance 144 from wider enters cushion chamber 14, so air-flow velocity is lowered, thereby from cushion chamber 14, enters in the first leading note groove 1161 via outlet 146 with lower flow velocity.This audio amplifier 100 can effectively reduce between this air-flow and sound guide tube 116 noise that friction occurs and produce, thereby reaches the effect that promotes the pronunciation quality.
Understandably, for further reducing the flow velocity of air-flow in cushion chamber 14, also can be at the interior cushion pad 148 that arranges of cushion chamber 14.This cushion pad 148 is made by fabric, and it has the mesh of a large amount of dense distribution.Cushion pad 148 preferably is placed in the narrowest position of passage 142, to obtain the preferably effect of buffer gas flow.
It is also understood that ground, above-mentioned cushion chamber 14 can also be varied to other structures.As shown in Figure 7, this cushion chamber 14a is formed by connecting by four side plate 140a and a base plate 141a.Four side plate 140a surround a passage 142a jointly.The top of this passage 142a is opened wide and is formed entrance 144a, and the bottom of this passage 142a is hidden by base plate 141a.Base plate 141a forms the perforation 146a of some perforations.These perforation 146a is as exporting passage 142a and the outside conducting of cushion chamber 14a.The height of this cushion chamber 14a is less than the height of sound guide tube 116.The area of this entrance 144a is greater than the area of the first opening 130.Cushion chamber 14a is fixed in the position of the bottom surface of cover plate 13 near the first opening 130 by viscose glue or other fixed forms by its end face, and entrance 144a is communicated with the first opening 130.The base plate 141a bottom surface of cushion chamber 14a is higher than the end face (being that base plate 141a is suspended in the first leading note groove 1161 of sound guide tube 116) of lower cover 11 diapires 111, and the 146a that makes to bore a hole is unlikely to be blocked by diapire 111.Air-flow enters the passage 142a in cushion chamber 14a from the first opening 130 via the entrance 144a of passage 142a, then enters in the first leading note groove 1161 via the outlet of passage 142a.Due to the area of the outlet of the cushion chamber 14a area much smaller than entrance 144a, so air-flow flow velocity when flowing out from outlet will be slowed down, thereby also can play the effect that reduces noise.
It is also understood that ground, this cushion chamber 14a also can further be varied to structure as shown in Figure 8.Cushion chamber 14b in this embodiment and the difference of the cushion chamber 14a in Fig. 7 are that inner passage 142b is gradually-reducing shape from top to bottom.In this, the passage 142b of convergent more is conducive to slow down air-flow velocity, thereby reduces the noise in sound guide tube 116.
Claims (10)
1. an audio amplifier, comprise casing and be located at the loud speaker in described casing, the sound chamber that is formed with host cavity in described casing and is connected with described host cavity, described loud speaker is contained in described host cavity, it is characterized in that: described sound is formed with sound guide tube in chamber, described sound guide tube has first end and the second end, described first end place is provided with the first opening so that described sound guide tube is connected with described sound chamber, described the second end place is provided with the second opening so that described sound guide tube is connected with the external world, described the first opening part is provided with cushion chamber, form the passage connected in cushion chamber, passage comprises that the outlet be communicated with sound guide tube reaches the entrance towards the first opening, at least one place of passage narrows with respect to its entrance.
2. audio amplifier as claimed in claim 1 is characterized in that: cushion chamber comprises base plate and is formed at the side plate on base plate, and entrance is enclosed and formed by side plate, and outlet is opened on base plate.
3. audio amplifier as claimed in claim 2, is characterized in that: export and comprise the perforation be opened on base plate.
4. audio amplifier as claimed in claim 3, it is characterized in that: base plate is suspended in sound guide tube.
5. audio amplifier as claimed in claim 2 is characterized in that: the diameter of passage is along from entrance, the direction towards outlet reduces gradually.
6. audio amplifier as claimed in claim 1 is characterized in that: the diameter of passage is along from entrance, the direction towards outlet first reduces to increase gradually more gradually.
7. audio amplifier as claimed in claim 6, is characterized in that: export the side that is opened in cushion chamber.
8. audio amplifier as claimed in claim 6, it is characterized in that: the narrowest place of passage is provided with cushion pad.
9. audio amplifier as claimed in claim 1, it is characterized in that: sound guide tube comprises the first leading note groove, the second leading note groove and the 3rd leading note groove that is parallel to each other and is communicated with, and the first opening is communicated with the first leading note groove, and the second opening is communicated with the 3rd leading note groove.
10. audio amplifier as claimed in claim 1, it is characterized in that: cushion chamber is contained in the first leading note groove.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101597010A CN103428604A (en) | 2012-05-22 | 2012-05-22 | Loudspeaker box |
| TW101120967A TW201349886A (en) | 2012-05-22 | 2012-06-12 | Sound box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101597010A CN103428604A (en) | 2012-05-22 | 2012-05-22 | Loudspeaker box |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103428604A true CN103428604A (en) | 2013-12-04 |
Family
ID=49652656
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012101597010A Pending CN103428604A (en) | 2012-05-22 | 2012-05-22 | Loudspeaker box |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN103428604A (en) |
| TW (1) | TW201349886A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021088110A1 (en) * | 2019-11-06 | 2021-05-14 | 瑞声声学科技(深圳)有限公司 | Loudspeaker |
| CN114157943A (en) * | 2021-12-08 | 2022-03-08 | 深圳市拙野创意有限公司 | Diversified stereo set mounting structure and stereo set based on this structure |
-
2012
- 2012-05-22 CN CN2012101597010A patent/CN103428604A/en active Pending
- 2012-06-12 TW TW101120967A patent/TW201349886A/en unknown
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021088110A1 (en) * | 2019-11-06 | 2021-05-14 | 瑞声声学科技(深圳)有限公司 | Loudspeaker |
| CN114157943A (en) * | 2021-12-08 | 2022-03-08 | 深圳市拙野创意有限公司 | Diversified stereo set mounting structure and stereo set based on this structure |
| CN114157943B (en) * | 2021-12-08 | 2024-03-19 | 深圳市拙野创意有限公司 | Multidirectional sound installation structure and sound based on same |
Also Published As
| Publication number | Publication date |
|---|---|
| TW201349886A (en) | 2013-12-01 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20131204 |