CN105554635A - Electromagnetic shielding high-tone-quality loudspeaker - Google Patents
Electromagnetic shielding high-tone-quality loudspeaker Download PDFInfo
- Publication number
- CN105554635A CN105554635A CN201610147195.1A CN201610147195A CN105554635A CN 105554635 A CN105554635 A CN 105554635A CN 201610147195 A CN201610147195 A CN 201610147195A CN 105554635 A CN105554635 A CN 105554635A
- Authority
- CN
- China
- Prior art keywords
- module
- shielding cover
- circuit board
- electromagnetic shielding
- sound equipment
- 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.)
- Pending
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Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R3/00—Circuits for transducers, loudspeakers or microphones
- H04R3/007—Protection circuits for transducers
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R2400/00—Loudspeakers
- H04R2400/11—Aspects regarding the frame of loudspeaker transducers
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- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
Abstract
The invention discloses an electromagnetic shielding high-tone-quality loudspeaker comprising an audio input module, a microprocessor module, a digital-to-analogue conversion module, a filter module, a power amplifier module and a loudspeaker module which are in signal connection in sequence. The audio input module, the microprocessor module, the digital-to-analogue conversion module, the filter module and the power amplifier module are integrated to one side of a circuit board. The circuit board is provided with an electromagnetic shielding cover for covering all the modules. The electromagnetic shielding cover comprises a shielding cover lid adapting to the circuit board in size. Silicone rubber clamping portions are arranged on the periphery of the shielding cover lid. Each clamping portion is provided with a first concave clamping position and a second concave clamping position in a spaced mode. The periphery of the shielding cover lid is embedded into the first concave clamping positions and fixed through a hot melt adhesive. The periphery of the circuit board is embedded into the second concave clamping positions. Through holes allowing wires to penetrate therein are formed between the first concave clamping positions and the second concave clamping positions. According to the electromagnetic shielding high-tone-quality loudspeaker, noise is reduced, and the tone quality is improved.
Description
Technical field
The present invention relates to sound technique field, particularly relate to a kind of electromagnetic shielding high tone quality sound equipment.
Background technology
Sound equipment can convert corresponding acoustic energy to audio frequency electric energy, and it is radiated space.Signal from device external will process by sound equipment, and noise is inevitably produced in the process of process, these noises to refer in the original signal produced after sound equipment and non-existent random extra, and this signal does not change with the change of original signal.In sound equipment, because signal is series connection, will be exaggerated in the equipment that therefore noise of an equipment enters below, so the last noise of system is the accumulation of all devices noise in system, thus reduce the expressive force of audio.
The source of noise can be divided into inside and outside two kinds, external noise caused by the electronic environment at equipment place and physicochemical environment, internal noise is mainly due to the factor such as circuit design, manufacturing process, produced by equipment self, therefore, by to the improvement of circuit and the optimization of electronic environment, can in the shortcoming to a certain degree overcoming existing sound equipment.
Summary of the invention
In view of this, the object of the invention is to overcome the deficiencies in the prior art, a kind of high tone quality sound equipment that can shield external interference is provided.
In order to solve the problems of the technologies described above, the present invention adopts following scheme to realize:
A kind of electromagnetic shielding high tone quality sound equipment, comprise the Audio Input Modules that signal successively connects, microprocessor module, D/A converter module, filtration module, power amplifier module and loudspeaker module, described Audio Input Modules, microprocessor module, digital-to-analogue dress die change block, filtration module and power amplifier module are integrated in the side of circuit board, described circuit board is provided with the electro-magnetic shielding cover covering each module, described electro-magnetic shielding cover comprises the shielding cover cap adapted with circuit board size, the surrounding of described shielding cover cap is provided with silicon rubber clamping part, described clamping part is provided with the first alternate matrix clamping position and the second matrix clamping position, the surrounding of shielding cover cap is embedded into the first matrix clamping position and is fixed by PUR, the surrounding of circuit board is embedded into the second matrix clamping position, described first matrix clamping position and the second matrix clamp the through hole being provided with between position and passing through for wire rod.
Audio signal inputs from Audio Input Modules, through the laggard line number mode convertion of process of microprocessor module, and the filtration module arranged can filter out unwanted audio signal, obtain the audio signal of characteristic frequency, eventually pass through the process of power amplifier module and loudspeaker module, improve the performance of tonequality.Further, due to sound equipment operationally, it is near various electric equipment, and therefore each module is very easily subject to the interference of external electromagnetic, so by arranging electro-magnetic shielding cover to isolate extraneous interference.Shielding cover cap clamps position with the first matrix of silicon rubber clamping part and is fixedly connected with, and there is elasticity due to silicon rubber clamping part, so the second matrix clamping position easily sticks into circuit board, thus parcel is formed to circuit board, this measure reaches the effect of electromagnetic shielding, and the easy installation and removal of radome.
Described D/A converter module is two digital to analog converters in parallel, and one of them digital to analog converter is in series with inverter.Audio signal is divided into two-way in D/A converter module, wherein a road directly enters digital to analog converter, another road becomes polarity reversing signal through inverter and enters digital to analog converter again, so mutually mix from digital to analog converter signal out and another from digital to analog converter signal out, equivalent bit number can not only be provided like this, can also conversion accuracy be improved, improve tonequality performance.
Described loudspeaker module comprises loud speaker, and the vibrating diaphragm cutting plane of described loud speaker is wavy shaped configuration, and the indent position of wavy shaped configuration is provided with the ceramic fibre reinforced pipe of hollow ring, is filled with mercury in described ceramic fibre reinforced pipe.
By the ceramic fibre reinforced pipe arranged, the performance of supper bass in loud speaker can be strengthened, in addition, owing to arranging ceramic fibre reinforced pipe at indent position, so the dispersion angle of sound transmission can also be expanded to a certain extent, overcome the shortcoming of direction propagation narrow range, also by filling mercury, make tonequality purer, and can avoid the appearance of noise, expressive force is stronger.
Described shielding cover cap is metallic shield cover cap, and it has wave structure.The electromagnetic radiation that electro-magnetic shielding cover shielding is extraneous, but certain heat can be sent when components and parts work on circuit board, so shielding cover cap is set to wave structure, increase heat transfer area.
Metal mesh sheet is provided with in described silicon rubber clamping part.Silicon rubber retaining part, in the surrounding of shielding cover cap, by arranging metal mesh sheet in the inside of silicon rubber clamping part, further can reduce extraneous electromagnetic radiation, improving the stability of components and parts work, reduce the generation of noise, improve tonequality expressive force.
Compared with prior art, the present invention has following beneficial effect: the present invention improves sound equipment, reduce the shortcoming that loss of signal causes tonequality to reduce, and mask the impact of external electromagnetic radiation on components and parts to a certain extent, make sound effect more outstanding.
Accompanying drawing explanation
Fig. 1 is embodiment 1 structured flowchart;
Fig. 2 is D/A converter module structured flowchart;
Fig. 3 is shielding circuit board structural representation;
Fig. 4 is shielding circuit board STRUCTURE DECOMPOSITION figure;
Fig. 5 is metal mesh sheet structural representation;
Fig. 6 is vibrating diaphragm sectional structure chart.
Embodiment
In order to allow those skilled in the art understand technical scheme of the present invention better, below in conjunction with accompanying drawing, the present invention is further elaborated.
Embodiment 1
As illustrated in fig. 1 and 2, a kind of electromagnetic shielding high tone quality sound equipment, comprise Audio Input Modules, microprocessor module, D/A converter module, filtration module, power amplifier module and loudspeaker module that signal successively connects, described D/A converter module is two digital to analog converters in parallel (DAC), and one of them digital to analog converter is in series with inverter 2.As shown in Figures 3 and 4, described Audio Input Modules, microprocessor module, digital-to-analogue dress die change block, filtration module and power amplifier module are integrated in the side of circuit board 1, described circuit board 1 is provided with the electro-magnetic shielding cover covering each module, described electro-magnetic shielding cover comprises the metallic shield cover cap 31 adapted with circuit board size, the surrounding of described shielding cover cap is provided with silicon rubber clamping part 32, described clamping part is provided with the first alternate matrix clamping position 321 and the second matrix clamping position 322, the surrounding of shielding cover cap 31 is embedded into the first matrix clamping position 321 and is fixed by PUR, the surrounding of circuit board 1 is embedded into the second matrix and clamps 322, described first matrix clamping position 321 and the second matrix clamp the through hole 323 being provided with between position 322 and passing through for wire rod.
As shown in Figures 3 and 4, described shielding cover cap 31 is wave structure, is provided with metal mesh sheet 324 in described silicon rubber clamping part 32, and as shown in Figure 5, described metal mesh sheet is that in bonding jumper, traversed by mistake forms.
As shown in Figure 6, described loudspeaker module comprises loud speaker, and vibrating diaphragm 4 cutting plane of described loud speaker is wavy shaped configuration, and the indent position of wavy shaped configuration is provided with the ceramic fibre reinforced pipe 5 of hollow ring, is filled with mercury in described ceramic fibre reinforced pipe.
Claims (5)
1. an electromagnetic shielding high tone quality sound equipment, it is characterized in that, comprise the Audio Input Modules that signal successively connects, microprocessor module, D/A converter module, filtration module, power amplifier module and loudspeaker module, described Audio Input Modules, microprocessor module, digital-to-analogue dress die change block, filtration module and power amplifier module are integrated in the side of circuit board, described circuit board is provided with the electro-magnetic shielding cover covering each module, described electro-magnetic shielding cover comprises the shielding cover cap adapted with circuit board size, the surrounding of described shielding cover cap is provided with silicon rubber clamping part, described clamping part is provided with the first alternate matrix clamping position and the second matrix clamping position, the surrounding of shielding cover cap is embedded into the first matrix clamping position and is fixed by PUR, the surrounding of circuit board is embedded into the second matrix clamping position, described first matrix clamping position and the second matrix clamp the through hole being provided with between position and passing through for wire rod.
2. electromagnetic shielding high tone quality sound equipment according to claim 1, is characterized in that, described D/A converter module is two digital to analog converters in parallel, and one of them digital to analog converter is in series with inverter.
3. electromagnetic shielding high tone quality sound equipment according to claim 1, it is characterized in that, described loudspeaker module comprises loud speaker, the vibrating diaphragm cutting plane of described loud speaker is wavy shaped configuration, and the indent position of wavy shaped configuration is provided with the ceramic fibre reinforced pipe of hollow ring, in described ceramic fibre reinforced pipe, be filled with mercury.
4. electromagnetic shielding high tone quality sound equipment according to claim 1, is characterized in that, described shielding cover cap is metallic shield cover cap, and it has wave structure.
5. electromagnetic shielding high tone quality sound equipment according to claim 1, is characterized in that, is provided with metal mesh sheet in described silicon rubber clamping part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610147195.1A CN105554635A (en) | 2016-03-16 | 2016-03-16 | Electromagnetic shielding high-tone-quality loudspeaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610147195.1A CN105554635A (en) | 2016-03-16 | 2016-03-16 | Electromagnetic shielding high-tone-quality loudspeaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105554635A true CN105554635A (en) | 2016-05-04 |
Family
ID=55833529
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610147195.1A Pending CN105554635A (en) | 2016-03-16 | 2016-03-16 | Electromagnetic shielding high-tone-quality loudspeaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105554635A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108882107A (en) * | 2018-09-03 | 2018-11-23 | 佛山豆萁科技有限公司 | A kind of sound equipment of high tone quality |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2489554Y (en) * | 2001-07-11 | 2002-05-01 | 倚天资讯股份有限公司 | Antimagnetic shield device |
| CN2520086Y (en) * | 2001-11-22 | 2002-11-06 | 联想(北京)有限公司 | Phase inversion type bass loudspeaker casing |
| CN101641965A (en) * | 2007-03-20 | 2010-02-03 | 日本电气株式会社 | Acoustic processing system and method for electronic device and mobile telephone terminal |
| CN201409276Y (en) * | 2009-05-21 | 2010-02-17 | 青岛海信电器股份有限公司 | Electromagnetic shielding cover and printed circuit board (PCB) device |
| CN102144409A (en) * | 2008-09-05 | 2011-08-03 | 苹果公司 | Electromagnetic interference shields with piezos |
| CN102158778A (en) * | 2011-03-11 | 2011-08-17 | 青岛海信移动通信技术股份有限公司 | Method, equipment and system for reducing headset noise |
| CN202496172U (en) * | 2012-02-13 | 2012-10-17 | 环达电脑(上海)有限公司 | Easy-opened electromagnetic shielding cover |
-
2016
- 2016-03-16 CN CN201610147195.1A patent/CN105554635A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2489554Y (en) * | 2001-07-11 | 2002-05-01 | 倚天资讯股份有限公司 | Antimagnetic shield device |
| CN2520086Y (en) * | 2001-11-22 | 2002-11-06 | 联想(北京)有限公司 | Phase inversion type bass loudspeaker casing |
| CN101641965A (en) * | 2007-03-20 | 2010-02-03 | 日本电气株式会社 | Acoustic processing system and method for electronic device and mobile telephone terminal |
| CN102144409A (en) * | 2008-09-05 | 2011-08-03 | 苹果公司 | Electromagnetic interference shields with piezos |
| CN201409276Y (en) * | 2009-05-21 | 2010-02-17 | 青岛海信电器股份有限公司 | Electromagnetic shielding cover and printed circuit board (PCB) device |
| CN102158778A (en) * | 2011-03-11 | 2011-08-17 | 青岛海信移动通信技术股份有限公司 | Method, equipment and system for reducing headset noise |
| CN202496172U (en) * | 2012-02-13 | 2012-10-17 | 环达电脑(上海)有限公司 | Easy-opened electromagnetic shielding cover |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108882107A (en) * | 2018-09-03 | 2018-11-23 | 佛山豆萁科技有限公司 | A kind of sound equipment of high tone quality |
| CN108882107B (en) * | 2018-09-03 | 2019-09-27 | 南安松茂贸易有限公司 | A kind of sound equipment of high tone quality |
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160504 |
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| RJ01 | Rejection of invention patent application after publication |