CN202276463U - Protection device of speaker of voice box - Google Patents
Protection device of speaker of voice box Download PDFInfo
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- CN202276463U CN202276463U CN2011203765810U CN201120376581U CN202276463U CN 202276463 U CN202276463 U CN 202276463U CN 2011203765810 U CN2011203765810 U CN 2011203765810U CN 201120376581 U CN201120376581 U CN 201120376581U CN 202276463 U CN202276463 U CN 202276463U
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Abstract
The utility model relates to a protection device of a speaker of a voice box, which is composed of a speaker device and a frequency divider. A voice frequency input module and a frequency divider module on the speaker device are connected through a power reducing protection module. The frequency divider module is respectively connected with a low voice module and a high voice module, and a peak value protection module is connected between the frequency divider module and the high voice module. The power reducing protection module is connected with a driving relay module, and the voice frequency input module is powered by a power supply module. Sound light alarming is achieved by adding an overload detection output device. Simultaneously, the protection device conducts time delay control, starts overload protection when the overload time reaches the preset value and reduces power of the speaker. The largest peak value of the speaker is adopted for detection and protection for mid-high voice, when the peak value is exceeded, the voice is automatically limited to the value, so that the voice coil burning occurred in the mid-high voice of the speaker can be avoided.
Description
Technical field
The utility model relates to a kind of audio amplifier and audio amplifier loud speaker protector on the loud speaker that is applied on the sound equipment industry.
Background technology
The voice coil loudspeaker voice coil phenomenon appears burning in existing professional loud speaker sometimes, mainly is the rated power that power has surpassed loud speaker, causes burning voice coil loudspeaker voice coil, and is difficult to judge whether the loud speaker overload in using; In can effectively protect voice coil loudspeaker voice coil and magnet friction phenomenon around the formula voice coil loudspeaker voice coil, still can't let sound control understand overload situations timely; Alt causes burning sometimes because of the momentary pulse signal.
Summary of the invention
The purpose of the utility model is to overcome the deficiency of above-mentioned existence, and a kind of audio amplifier loud speaker protector that prevents the burning voice coil loudspeaker voice coil phenomenon that loud speaker occurs is provided.
The purpose of the utility model is accomplished through following technical scheme; It is mainly by speaker unit, frequency divider; Be connected through falling the power protection module between the audio frequency input module on the described speaker unit and allocator module; This allocator module links to each other with the high pitch module with the bass module respectively, and allocator module and high pitch intermodule are connected with a peak value protection module; Fall the power protection module and link to each other with the driving relay module, this driving relay module also links to each other with alarm output module, and alarm output module links to each other with the long-distance monitoring and alarming module; This alarm output module also links to each other with bass overload detection module with high pitch overload detection module; This high pitch overload detection module links to each other with the first sound and light alarm module, simultaneously also with or a door module link to each other; This bass overload detection module links to each other with the second acousto-optic alarm module, simultaneously also with or a door module link to each other; Should or the door module be connected with a delay circuit module with driving between relay module; Described audio frequency input module provides power supply by power module.
As preferably, described speaker unit is provided with washer, voice coil loudspeaker voice coil; Speech coil framework, described speech coil framework is made up of coil and skeleton, and described voice coil loudspeaker voice coil outermost layer has one deck conduction and non-magnetic material; And be connected with one and washer between can realize the lead-out wire of reporting to the police, coil is connected with two leading foots; This lead-out wire is through on the interior shell stiff end that is connected to loud speaker around the formula mode.
As preferably, there is the short circuit copper ring described washer inboard, and this short circuit copper ring directly is connected with lead.
As preferably, described peak value protection module is made up of transient state power supply suppression device and overload current limiting device, and this transient state power supply TVS and height, middle pitch are parallelly connected, is in series with oneself fuse that resets between this height, middle pitch and allocator module output.
The utility model is a kind of improvement to prior art, and through increasing the overload detection output device, thereby realization sound, light are reported to the police; The control of delaying time simultaneously reaches preset value when the overload time, just starts overload protection, reduces the power of loud speaker; And alt adopts the protection of loud speaker maximum peak power voltage detecting, and when surpassing this numerical value, volitional check is to the advantage of this numerical value.
Description of drawings
Fig. 1 is the syndeton block diagram of the utility model.
Fig. 2 is the circuit diagram of the utility model.
Fig. 3 is the remote monitoring display alarm circuit diagram of the utility model.
Fig. 4 is the woofer apparatus structure sketch map of the utility model.
Fig. 5 is the speech coil framework structural representation of the utility model.
Embodiment
Label in the accompanying drawing is respectively: 1, skeleton, 2, coil, 3, lead-out wire, 4, leading foot, 5, the skeleton lead-out wire; 6, lead, 7, the first overload-alarm binding post, 8, the second overload-alarm binding post, 9, washer, 10, magnet; 11, T sections, 12, speech coil framework, 13, voice coil loudspeaker voice coil, 14, dust cap, 15, play ripple; 16, cone, 17, foam side, 18, voice coil loudspeaker voice coil basin frame, 20, the audio frequency input module, 21, fall the power protection module; 22, allocator module, 23, the peak value protection module, 24, the high pitch module, 25, the bass module, 26, drive relay module; 27, delay circuit module, 28 or the door module, 29, alarm output module, 30, the long-distance monitoring and alarming module, 31, high pitch overload detection module; 32, bass overload detection module, 33, the first sound and light alarm module, 34, the second acousto-optic alarm module, 35, power module.
To combine accompanying drawing that the utility model is done detailed introduction below: shown in accompanying drawing 1; Audio frequency input module 20 on the utility model speaker unit falls the total allocator module 22 of giving in power protection module 21 backs through one; The bass of allocator module 22 outputs directly connects bass horn; Behind high pitch (middle pitch) process peak value protection module 23 circuit, give high pitch (middle pitch) loudspeaker again.
The protection principle of the utility model is to detect the whether overheated voice coil loudspeaker voice coil overload that causes of loudspeaker voice coil loudspeaker voice coil, realizes a series of preventative warning and self-protection function.Each loudspeaker in the audio amplifier all have the overload detection lead-out terminal; 31 outputs one road of high pitch overload detection module drive first sound and light alarm 33; Also deliver to simultaneously or door module 28, also have one the tunnel also deliver to alarm output module 29 binding post, use for long-distance monitoring and alarming module 30.Same second sound and light alarm 34 that drives of bass overload detection module 32 output is also delivered to or door module 28 simultaneously, also have one the tunnel also deliver to alarm output module 29 binding post, use for long-distance monitoring and alarming module 30.The multiple alarm signal through or the door module 28 after; Delivering to delay circuit module 27 delays time after (10 seconds to 1 minute); The output signal drives relay module 26, thereby makes that driving relay module 26 transfers disconnection to by normally closed, and the power of loud speaker is given allocator module 22 after falling power protection module 21 attenuator circuits; Make power reduce significantly, guarantee the safety of loud speaker.After driving relay module 26 work, there is one road signal to give alarm output module 29 ends simultaneously, realizing long-distance monitoring and alarming.Power module 35 can have the loudspeaker audio signal rectification to obtain power supply.As far as possible guarantee to listen to the music the time, sound does not appear closing, adopted and preferably fallen power scheme.
By delay circuit module 27, to fall power protection module 21 be when preventing the loud speaker overload with driving time-delay relay protective circuit that relay module 26 constitutes; Sound control is also used for a long time; And power is not reduced; Thereby start the effective protection measure that reduces power automatically, the protection loud speaker.
Described alarm output module 29 also can be connected to the reduction control that power amplifier prime etc. is carried out signal gain.
The band protector voice coil loudspeaker voice coil application scheme of loud speaker only provides the structure chart of conical horn commonly used to explain, other structure embodiment operation principles such as high pitch also roughly the same, no longer explanation.
Shown in accompanying drawing 4, described speaker unit is by washer 9, magnet 10, T sections 11; Voice coil loudspeaker voice coil 13, speech coil framework 12 plays ripple 15; Dust cap 14, cone 16, foam side 17; Voice coil loudspeaker voice coil basin frame 18 is formed, and described voice coil loudspeaker voice coil 13 is connected as a single entity with speech coil framework 12 inboards, and the skeleton lead-out wire 5 on this speech coil framework 12 is connected with the first overload-alarm binding post 7; The openend inboard of speech coil framework 12 is positioned on the boss of T sections 11, and the openend of speech coil framework 12 outside is close to washer 9.
11 of described washer 9 and T sections are provided with a magnet 10; 8 of washer 9 and the second overload-alarm binding posts are connected through lead 6, and this second overload-alarm binding post 8 and the first overload-alarm binding post 7 all are positioned on the voice coil loudspeaker voice coil basin frame 18.
Described voice coil loudspeaker voice coil basin frame 18 and 12 of speech coil frameworks are connected with one and play ripple 15; One cone 16 is arranged in the left side of this bullet ripple 15, and these cone 16 1 ends link to each other with speech coil framework 12, and cone 16 other ends link to each other with voice coil loudspeaker voice coil basin frame 18 through foam side 17, and these 16 of two cones are provided with a dust cap 14.
Shown in accompanying drawing 4; What the utility model was different with conventional loudspeakers is; Described voice coil loudspeaker voice coil 13 outermost layers have one deck conduction and non-magnetic material, and voice coil loudspeaker voice coil 13 is connected as a single entity with speech coil framework 12 inboards, and the skeleton lead-out wire 5 on this speech coil framework 12 is connected with the first overload-alarm binding post 7; The openend inboard of speech coil framework 12 is positioned on the boss of T sections 11, and the openend of speech coil framework 12 outside is close to washer 9.11 of described washer 9 and T sections are provided with a magnet 10; 8 of washer 9 and the second overload-alarm binding posts are connected through lead 6, and this second overload-alarm binding post 8 and the first overload-alarm binding post 7 all are positioned on the voice coil loudspeaker voice coil basin frame 18.When the external diameter of voice coil loudspeaker voice coil 13 and washer 9 are run into, will form the similar switch in loop at the first overload-alarm binding post 7 and the second overload-alarm binding post 8, thus output alarm signal.
Like accompanying drawing 4, shown in 5; Described speech coil framework 12 is made up of coil 2 and skeleton 1; Described voice coil loudspeaker voice coil 13 outermost layers have one deck conduction and non-magnetic material, and are connected with lead-out wire 3, just can realize (and washer 9) warning; Lead-out wire 3 is the same with the lead-in wire of voice coil loudspeaker voice coil, is connected to this lead-out wire 3 on the shell stiff end of loud speaker through identical mode.The design is interior around formula, can reduce voice coil loudspeaker voice coil 13 weight significantly, lets skeleton 1 take into account conductive layer, takes into account protective material.
There is the scheme of short circuit copper ring the washer inboard, and the lead 6 of output 8 directly is connected with the short circuit copper ring.
Shown in accompanying drawing 2, X1, X2 are Transient Voltage Suppressor spare (peak value protection), can select the TVS pipe for use, piezo-resistance, overload such as other discharge tubes current limiting device.F1, F2 also can replace with high-power resistance for from resetting fuse, and purpose is to prevent X1, and X2 damages.F1, X1 forms the high pitch peak voltage protection circuit, and X1 is parallelly connected with high pitch, between F1 series connection and high pitch and frequency divider; F2, X2 form middle pitch peak value protective circuit, and X2 is parallelly connected with middle pitch, between F2 series connection and middle pitch and frequency divider; Bass horn directly is connected with frequency divider.
The overload detection principle is excessive when voice coil loudspeaker voice coil power, and after the heating, it is big that voice coil diameter becomes, and these voice coil loudspeaker voice coil 13 outermost layers have one deck conduction and non-magnetic material, such as aluminium, and copper etc., when external diameter and the washer 9 of voice coil loudspeaker voice coil 13 are run into, overload detection formation loop, sense switch short circuit.
Loudspeaker is to there being overload detection 1, and mediant trumpet has overload detection 2, and bass horn has overload detection 3.Overload detection 1,2, one of 3 all connects VCC, and the other end connects LED1 respectively, LED2, the positive pole of LED3 connects diode D1 simultaneously respectively, D2, the positive pole of D3 also is connected respectively to 1,2,3 pin of terminals JP1.LED1, LED2, the negative pole of LED3 is connected to current-limiting resistance R1, R2, R3 respectively.Diode D1, D2, the negative pole of D3 links together, and forms OR circuit with R4, and outputs to delay circuit.Delay circuit carries out timing (counting) after a period of time to continuous high level (low level), exports high level (low level is consistent with input) again.Delay circuit output provides driving voltage for triode Q1 through resistance R 5, and triode Q1 conducting gives relay K 1 power supply, and the parallel connection of K1 two ends discharges diode D4, another termination VCC of K1 with inverse electromotive force.The two ends of relay are also connected to 4,7 pin of terminals JP1; The music input is from IN+ and the input of IN-end, and IN+ holds the normally closed electric shock with the frequency divider SRE, also is parallel with the bulb DS1 of hypotensive effect simultaneously.And 8 pin of JP1 connect common port ground.JP1 can adopt 8 core RJ45 ports, conveniently is connected with netting twine, also can adopt his terminals and plug connector.JP1 also is reserved with the another one interface bass 2 of two basses.
Working power is connected through resistance R 6 by the audio signal of power amplifier output, bridge heap D5 rectification, and electrochemical capacitor C1, voltage stabilizing didoe D6 provide power supply.Also can give VCC with externally fed separately.
Shown in accompanying drawing 3, be remote monitoring display alarm in the Audio Contral Room.JP1 interface in the audio amplifier adopts 8 core cables to be connected with remote monitoring display alarm JP2, for example netting twine etc.
1,2,3 pin of JP2 are connected to light-emitting diode LDE4 respectively, LED5, LED6 and series limiting resistor R7, R8, R9.8 pin be common ends ().LED4 reports to the police corresponding to the loudspeaker of audio amplifier, and LED5 reports to the police corresponding to the mediant trumpet of audio amplifier, and LED6 reports to the police corresponding to the bass horn of audio amplifier; 4 pin of JP2 and 7 pin are reported to the police for the relay K 1 of audio amplifier, and this loop is connected to buzzer and LED 7 and the luminous warning that current-limiting resistance R10 forms, and in time reminds sound control audio amplifier self-shield (relay adhesive).
This high pitch (LED4), middle pitch (LED5), LED light (LED7) color of bass (LED6) and relay output is all different, the convenient differentiation.
This programme is a multifunction protection warning scheme, also can adopt other partial functions to implement, and profit is perhaps installed patch light-emitting diode and realized transshipping luminous warning separately on the front panel of loud speaker on the skeleton foam side of woofer.
Except that the foregoing description, all employings are equal to the technical scheme of replacement or equivalent transformation formation, all drop on the protection range of the utility model requirement.
Claims (4)
1. audio amplifier loud speaker protector; It is mainly by speaker unit, frequency divider; It is characterized in that: be connected through falling power protection module (21) between the audio frequency input module (20) on the described speaker unit and allocator module (22); This allocator module (22) links to each other with high pitch module (24) with bass module (25) respectively, and is connected with a peak value protection module (23) between allocator module (22) and high pitch module (24); Falling power protection module (21) links to each other with driving relay module (26); This drives relay module (26) and also links to each other with alarm output module (29), alarm output module (29) with can link to each other for Audio Contral Room provides the long-distance monitoring and alarming module (30) that real-time audio amplifier transships phenomenon; This alarm output module (29) also links to each other with bass overload detection module (32) with high pitch overload detection module (31); This high pitch overload detection module (31) links to each other with the first sound and light alarm module (33), simultaneously also with or a door module (28) link to each other; This bass overload detection module (32) links to each other with the second acousto-optic alarm module (34), simultaneously also with or a door module (28) link to each other; Should or door module (28) and driving relay module (26) between be connected with a delay circuit module (27); Described audio frequency input module (20) provides power supply by power module (35).
2. audio amplifier loud speaker protector according to claim 1; It is characterized in that described speaker unit is provided with washer, voice coil loudspeaker voice coil, speech coil framework; Described speech coil framework (12) is made up of coil (2) and skeleton (1); Described voice coil loudspeaker voice coil (13) outermost layer has one deck conduction and non-magnetic material, and be connected with one with washer (9) between can realize the lead-out wire (3) of warning, coil (2) is connected with two leading foots (4); This lead-out wire (3) is through on the interior shell stiff end that is connected to loud speaker around the formula mode.
3. audio amplifier loud speaker protector according to claim 2 is characterized in that there is the short circuit copper ring described washer (9) inboard, and this short circuit copper ring directly is connected with lead (6).
4. audio amplifier loud speaker protector according to claim 1; It is characterized in that described peak value protection module (23) by transient state power supply suppression device with the overload current limiting device form; This transient state power supply TVS with high, middle pitch is parallelly connected, is in series with oneself fuse that resets between this height, middle pitch and allocator module (22) output.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203765810U CN202276463U (en) | 2011-09-28 | 2011-09-28 | Protection device of speaker of voice box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203765810U CN202276463U (en) | 2011-09-28 | 2011-09-28 | Protection device of speaker of voice box |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202276463U true CN202276463U (en) | 2012-06-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203765810U Expired - Fee Related CN202276463U (en) | 2011-09-28 | 2011-09-28 | Protection device of speaker of voice box |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202276463U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104980841A (en) * | 2015-08-24 | 2015-10-14 | 苏州硅果电子有限公司 | Sounder-overload-preventing structure |
| CN107071638A (en) * | 2017-02-10 | 2017-08-18 | 安徽井利电子有限公司 | A kind of direct radiator type dynamic loudspeaker system |
| CN107948880A (en) * | 2017-11-10 | 2018-04-20 | 佛山市天啊科技有限公司 | A kind of vehicle-mounted fast-assembling sound system applied to automobile |
-
2011
- 2011-09-28 CN CN2011203765810U patent/CN202276463U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104980841A (en) * | 2015-08-24 | 2015-10-14 | 苏州硅果电子有限公司 | Sounder-overload-preventing structure |
| CN107071638A (en) * | 2017-02-10 | 2017-08-18 | 安徽井利电子有限公司 | A kind of direct radiator type dynamic loudspeaker system |
| CN107948880A (en) * | 2017-11-10 | 2018-04-20 | 佛山市天啊科技有限公司 | A kind of vehicle-mounted fast-assembling sound system applied to automobile |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120613 Termination date: 20140928 |
|
| EXPY | Termination of patent right or utility model |