CN201608875U - Acoustic generation system - Google Patents
Acoustic generation system Download PDFInfo
- Publication number
- CN201608875U CN201608875U CN200920260184XU CN200920260184U CN201608875U CN 201608875 U CN201608875 U CN 201608875U CN 200920260184X U CN200920260184X U CN 200920260184XU CN 200920260184 U CN200920260184 U CN 200920260184U CN 201608875 U CN201608875 U CN 201608875U
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- voice coil
- radio
- frequency
- output circuit
- power amplifier
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Abstract
The utility model relates to the electro-acoustic energy conversion field, in particular to an acoustic generation system with short distance communication function; a clad layer coil for transmitting electromagnetic wave signal is plated on the outer surface of the top part of a diaphragm ball far from the magnetic circuit system, the clad layer coil is electrically connected with a voice coil, the clad layer coil has small volume and large radiation area; compared with prior art, the acoustic generation system is thinner and has more remarkable performance.
Description
[technical field]
The utility model relates to electroacoustic energy conversion field, specifically refers to a kind of acoustical generator 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 acoustical generator system is provided.
A kind of acoustical generator 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, the vibration unit of described loudspeaker monomer involving vibrations sounding and the magnetic circuit system of actuating force is provided, described vibration unit comprises vibrating diaphragm and the voice coil loudspeaker voice coil with ball top, voice coil loudspeaker voice coil is suspended in the magnetic circuit system, wherein said vibrating diaphragm ball top is away from being coated with the coating coil that transmits electromagnetic wave signal on the outer surface of magnetic circuit system direction or the inner surface near the magnetic circuit system direction, this coating coil is electrically connected with voice coil loudspeaker voice coil.
Preferably, described coating coil structure ringwise.
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 acoustical generator system, on the outer surface of vibrating diaphragm ball top, be coated with the coating coil that transmits electromagnetic wave signal away from the magnetic circuit system direction, this coating coil is electrically connected with voice coil loudspeaker voice coil, described coating winding volume is little, swept area is bigger, compare thinlyyer with traditional, performance advantage is more obvious.
[description of drawings]
Fig. 1 is a blast structural representation of the present utility model;
Fig. 2 is a generalized section of the present utility model;
Fig. 3 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 acoustical generator 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 protecgulum 30 of the vibration unit of described loudspeaker monomer 20 involving vibrations sounding and vibration unit top, vibration unit is made of with the voice coil loudspeaker voice coil 22 that is connected vibrating diaphragm vibrating diaphragm 10, voice coil loudspeaker voice coil 22 can be connected with vibrating diaphragm by skeleton, also comprises magnetic circuit system, and magnetic circuit system is made of magnetic bowl and magnet; Wherein said vibrating diaphragm 10 comprises ball top 110 that is positioned at the centre position and the ring 120 that centers on ball top 110, voice coil loudspeaker voice coil 22 is suspended in the magnetic circuit system, described vibrating diaphragm 10 ball tops 110 are away from being coated with the coating coil 11 that transmits electromagnetic wave signal on the outer surface of magnetic circuit system direction or the inner surface near the magnetic circuit system direction, this coating coil 11 is electrically connected with voice coil loudspeaker voice coil 22.Preferably coating coil 11 is arranged on vibrating diaphragm 10 outer surfaces of ball top 110 away from the magnetic circuit system direction, manufacture method is simple like this, avoids other interference; Described coating coil 11 is compared with traditional coiled antenna, can do extremely thinly under the constant situation of performance, and performance advantage is more obvious in super-thin speaker especially.Coating coil 11 is positioned at the upper surface of vibrating diaphragm 10, 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, and only occupies inner very little space.
As shown in Figure 3, 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 acoustical generator 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 coating 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, coating 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 acoustical generator 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 coating 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 (3)
1. acoustical generator 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, the vibration unit of described loudspeaker monomer involving vibrations sounding and the magnetic circuit system of actuating force is provided, described vibration unit comprises vibrating diaphragm and the voice coil loudspeaker voice coil with ball top, voice coil loudspeaker voice coil is suspended in the magnetic circuit system, it is characterized in that: described vibrating diaphragm ball top is away from being coated with the coating coil that transmits electromagnetic wave signal on the outer surface of magnetic circuit system direction or the inner surface near the magnetic circuit system direction, this coating coil is electrically connected with voice coil loudspeaker voice coil.
2. acoustical generator according to claim 1 system, it is characterized in that: described coating coil is structure ringwise.
3. acoustical generator according to claim 1 system, it 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 |
|---|---|---|---|
| CN200920260184XU CN201608875U (en) | 2009-11-09 | 2009-11-09 | Acoustic generation system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920260184XU CN201608875U (en) | 2009-11-09 | 2009-11-09 | Acoustic generation system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201608875U true CN201608875U (en) | 2010-10-13 |
Family
ID=42953574
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200920260184XU Expired - Lifetime CN201608875U (en) | 2009-11-09 | 2009-11-09 | Acoustic generation system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201608875U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104066038A (en) * | 2014-07-02 | 2014-09-24 | 深圳市信维通信股份有限公司 | Loudspeaker |
| 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 |
| CN107690732A (en) * | 2015-04-20 | 2018-02-13 | 株式会社Hctm | Mobile device loop aerial |
-
2009
- 2009-11-09 CN CN200920260184XU patent/CN201608875U/en not_active Expired - Lifetime
Cited By (5)
| 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 |
| CN104066038A (en) * | 2014-07-02 | 2014-09-24 | 深圳市信维通信股份有限公司 | Loudspeaker |
| CN104066038B (en) * | 2014-07-02 | 2018-08-17 | 深圳市信维通信股份有限公司 | A kind of loud speaker |
| CN107690732A (en) * | 2015-04-20 | 2018-02-13 | 株式会社Hctm | Mobile device loop aerial |
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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: 20101013 |