CN201585122U - Loudspeaker system - Google Patents
Loudspeaker system Download PDFInfo
- Publication number
- CN201585122U CN201585122U CN 200920260185 CN200920260185U CN201585122U CN 201585122 U CN201585122 U CN 201585122U CN 200920260185 CN200920260185 CN 200920260185 CN 200920260185 U CN200920260185 U CN 200920260185U CN 201585122 U CN201585122 U CN 201585122U
- Authority
- CN
- China
- Prior art keywords
- voice coil
- frequency
- radio
- output circuit
- power amplifier
- 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.)
- Expired - Lifetime
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Abstract
The utility model relates to the field of a loudspeaker, in particular to a loudspeaker system with short-distance communication function; the outer surface of a magnetic bowl is provided with a spiral coil which is used for transmitting electromagnetic wave signals and is made by winding; and the spiral coil is electrically connected with a voice coil and has small volume and larger radiating area. The loudspeaker system is thinner and has more obvious performances and advantages compared with the traditional loudspeaker system.
Description
[technical field]
The utility model relates to the loud speaker field, specifically refers to a kind of speaker system with short-range communications functionality.
[background technology]
Fast development along with portable consumer electronic device, people are more and more higher to its functional requirement, except being furnished with acoustical generator, near-field communication Near Field Communication (being called for short NFC) and radio-frequency (RF) identification RadioFrequency Identification (being called for short RFID) function have all been set up in a lot of consumer-elcetronics devicess in the electronic equipment with the information exchange between the realization equipment as the vocal function.For realizing this function, existing mobile communication equipment manufacturer successively is embedded in near-field communication technology or REID at mobile communication product, make such mobile communication product get final product sounding, can exchange electromagnetic wave signal to realize carrying out short-range information exchange between the electronic equipment by near-field communication technology and REID again to realize call function.On the pcb board of mobile communication product, add NFC radio-frequency (RF) power amplification output circuit, have one need are treated the radio-frequency (RF) power amplification and the electric capacity that is connected with amplifirer that the electricity signal amplifies in this NFC radio-frequency (RF) power amplification output circuit, an antenna also need be installed with emission or reception electromagnetic wave signal in this product, electric capacity in this antenna and NFC or the RFID power amplifier output circuit constitutes resonant circuit, and launch the electromagnetic wave signal that this resonant circuit produces, thereby carry out short-range information exchange by the exchange electromagnetic wave between the realization equipment by this antenna.Generally, required antenna is to add a special-purpose coil in mobile communication equipment, but along with mobile communication equipment is more and more microminiaturized, its volume inside is then more and more limited, thereby causes being difficult to find suitable space to be used to settle special-purpose coil.
Thereby, near-field communication technology and radio-frequency (RF) identification (being called for short RFID) are embedded in the mobile communication equipment, the problem values that can solve its inner space predicament again gets people's research.
[utility model content]
The utility model is subjected to the restriction of existing sound-producing device inner space at solution, is difficult to install the problem that is used for special-purpose emission or accepts electromagnetic antenna, and a kind of space-saving speaker system is provided.
A kind of speaker system, comprise loudspeaker monomer, handle the radio-frequency (RF) power amplification output circuit of electromagnetic wave signal and the audio frequency power amplifier output circuit of transmission audio signal, described loudspeaker monomer comprises the magnetic circuit system of the voice coil loudspeaker voice coil of cutting magnetic line and the voice coil loudspeaker voice coil that can suspend, magnetic circuit system is provided with the magnetic bowl, the outer surface of wherein said magnetic bowl is provided with the toroidal helical coil that the winding of transmitting electromagnetic wave signal is made, and this helical coil is electrically connected with voice coil loudspeaker voice coil.
Preferably, described radio-frequency (RF) power amplification output circuit comprises radio-frequency (RF) power amplification and the capacitor C 1 and the C2 that connect with the radio-frequency (RF) power amplification two ends respectively, connect the respectively output of voice coil loudspeaker voice coil of capacitor C 1 and C2; Described audio frequency power amplifier output circuit comprises audio frequency power amplifier and the inductance L 1 and the L2 that connect with the audio frequency power amplifier two ends respectively, and inductance L 1 and L2 are electrically connected voice coil loudspeaker voice coil respectively.
The utility model speaker system is provided with the helical coil that the winding of transmitting electromagnetic wave signal is made at the outer surface of magnetic bowl, and this helical coil is electrically connected with voice coil loudspeaker voice coil, described helical coil volume is little, swept area is bigger, compares thinlyyer with traditional, and performance advantage is more obvious.
[description of drawings]
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is a circuit block diagram of the present utility model.
[embodiment]
The utility model is described in further detail below in conjunction with drawings and embodiments.
As shown in Figure 1, 2, the utility model provides a kind of speaker system, it comprises loudspeaker monomer 20, handle the radio-frequency (RF) power amplification output circuit 60 of electromagnetic wave signal and audio frequency power amplifier output circuit 50 (not shown)s of transmission audio signal, can on the pcb board on the loudspeaker monomer, embed audio frequency power amplifier output circuit 50 and radio-frequency (RF) power amplification output circuit 60 in advance; The vibration unit of described loudspeaker monomer 20 involving vibrations sounding, vibration unit is made of with voice coil loudspeaker voice coil 22 (not shown)s that are connected vibrating diaphragm vibrating diaphragm, also comprise magnetic circuit system, magnetic circuit system is made of magnetic bowl 10 and magnet, voice coil loudspeaker voice coil 22 is suspended in the magnetic gap of magnetic bowl 10 and magnet formation, wherein magnetic bowl 10 is an outer surface away from the surface of magnet, the outer surface of magnetic bowl 10 is provided with the toroidal helical coil 11 that the winding of transmitting electromagnetic wave signal is made, be that helical coil 11 is wrapped on the sidewall of magnetic bowl 10 ringwise outer surfaces, this helical coil 11 is electrically connected with voice coil loudspeaker voice coil 22.Described helical coil 11 is compared with traditional antenna, can do extremely thinly under the constant situation of performance, and performance advantage is more obvious in super-thin speaker especially.Helical coil 11 its ringwise structure have the bigger advantage of thinner swept area, this structure is better effects if on the interacting of blocking-up audio frequency, radio frequency; Certainly also can only be wrapped in the bottom of magnetic bowl 10 outer surfaces.
As shown in Figure 2, be the utility model circuit block diagram, described radio-frequency (RF) power amplification output circuit 60 comprises radio-frequency (RF) power amplification 61 and the capacitor C 1 and the C2 that connect with radio-frequency (RF) power amplification 61 two ends respectively, connect the respectively output of voice coil loudspeaker voice coil 22 of capacitor C 1 and C2, radio-frequency (RF) power amplification 61 are used for need are waited to send out or the signal of exchange amplifies.Audio frequency power amplifier output circuit 50 comprises audio frequency power amplifier 51 and the inductance L 1 and the L2 that connect with audio frequency power amplifier 51 two ends respectively, and inductance L 1 and L2 are electrically connected voice coil loudspeaker voice coil 22 respectively.
Operation principle of the present utility model is: when 50 work of audio frequency power amplifier output circuit, its operating frequency section is 0～22KHZ, capacitor C 1 and C2 present high impedance or resistance at this frequency band, so that can be considered disconnection, when being 50 work of audio frequency power amplifier output circuit, radio-frequency (RF) power amplification output circuit 60 is not worked.Equally, when 60 work of radio-frequency (RF) power amplification output circuit, its operating frequency is 13.56MHz, inductance L 1 and L2 in the audio frequency power amplifier output circuit 50 present high impedance or resistance in this frequency, so that can be considered disconnection, when being 60 work of radio-frequency (RF) power amplification output circuit, audio frequency power amplifier output circuit 50 is not worked.
The utility model speaker system often is applied on the electronic equipments such as cell phone.Loudspeaker monomer 20 is sounded to realize call function; Radio-frequency (RF) power amplification output circuit 60 is to realize carrying out short-range information exchange between the electronic equipment.Usually, audio frequency power amplifier output circuit 50 and radio-frequency (RF) power amplification output circuit 60 and other electrical components also can be integrated on the interior pcb board of electronic equipment.The utility model separates audio frequency output and radio frequency output, thereby when the user need use the near-field communication technology to carry out short haul connection, 60 work of radio-frequency (RF) power amplification output circuit, audio frequency power amplifier output circuit 50 is not worked, the helical coil 11 of this moment is equal to an inductance, capacitor C 1 in this circuit and capacitor C 2 and inductance constitute a resonant circuit, and simultaneously, helical coil 11 passes out the electromagnetic wave signal that this resonant circuit produces as antenna.
The utility model audio frequency output and radio frequency output can be worked simultaneously, are independent of each other realization speaker system and use the rational deployment of the electronic equipment of this system, solved the space predicament of electronic equipment, and do not increase under the situation in space, make the area of helical coil 11 bigger, performance is better.
Above-described only is execution mode of the present utility model; should be pointed out that for the person of ordinary skill of the art at this, under the prerequisite that does not break away from the utility model creation design; can also make improvement, but these all belong to protection range of the present utility model.
Claims (2)
1. speaker system, comprise loudspeaker monomer, handle the radio-frequency (RF) power amplification output circuit of electromagnetic wave signal and the audio frequency power amplifier output circuit of transmission audio signal, described loudspeaker monomer comprises the magnetic circuit system of the voice coil loudspeaker voice coil of cutting magnetic line and the voice coil loudspeaker voice coil that can suspend, magnetic circuit system is provided with the magnetic bowl, it is characterized in that: the outer surface of described magnetic bowl is provided with the toroidal helical coil that the winding of transmitting electromagnetic wave signal is made, and this helical coil is electrically connected with voice coil loudspeaker voice coil.
2. a kind of speaker system according to claim 1 is characterized in that: described radio-frequency (RF) power amplification output circuit comprises radio-frequency (RF) power amplification and the capacitor C 1 and the C2 that connect with the radio-frequency (RF) power amplification two ends respectively, connect the respectively output of voice coil loudspeaker voice coil of capacitor C 1 and C2; Described audio frequency power amplifier output circuit comprises audio frequency power amplifier and the inductance L 1 and the L2 that connect with the audio frequency power amplifier two ends respectively, and inductance L 1 and L2 are electrically connected voice coil loudspeaker voice coil respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200920260185 CN201585122U (en) | 2009-11-09 | 2009-11-09 | Loudspeaker system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200920260185 CN201585122U (en) | 2009-11-09 | 2009-11-09 | Loudspeaker system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201585122U true CN201585122U (en) | 2010-09-15 |
Family
ID=42727140
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200920260185 Expired - Lifetime CN201585122U (en) | 2009-11-09 | 2009-11-09 | Loudspeaker system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201585122U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015172483A1 (en) * | 2014-05-15 | 2015-11-19 | 中兴通讯股份有限公司 | Near field communication device and working method, mobile terminal thereof |
| WO2016176997A1 (en) * | 2015-05-04 | 2016-11-10 | 歌尔声学股份有限公司 | Speaker module |
-
2009
- 2009-11-09 CN CN 200920260185 patent/CN201585122U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015172483A1 (en) * | 2014-05-15 | 2015-11-19 | 中兴通讯股份有限公司 | Near field communication device and working method, mobile terminal thereof |
| CN105099523A (en) * | 2014-05-15 | 2015-11-25 | 中兴通讯股份有限公司 | Near filed communication apparatus and work method thereof, and mobile terminal |
| WO2016176997A1 (en) * | 2015-05-04 | 2016-11-10 | 歌尔声学股份有限公司 | Speaker module |
| US10250961B2 (en) | 2015-05-04 | 2019-04-02 | Goertek Inc. | Speaker module |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20100915 |