CN2145427Y

CN2145427Y - high loudness alarm horn

Info

Publication number: CN2145427Y
Application number: CN 92234288
Authority: CN
Inventors: 蔡凡弟
Original assignee: Dahua Electronic Factory Zhongshan City Xiaolan District
Current assignee: Dahua Electronic Factory Zhongshan City Xiaolan District
Priority date: 1992-10-10
Filing date: 1992-10-10
Publication date: 1993-11-03
Anticipated expiration: 2002-10-10

Abstract

The utility model relates to a high loudness warning loudspeaker, it comprises sound source circuit, promotion boost circuit, sound gathering reflection cavity, resonant cavity, resonance piece, piezoceramics piece, back lid, mounting plate, DC power supply etc.. Because the sound signal generated by the sound source circuit drives the piezoelectric ceramic piece after pushing the booster circuit and radiates out the sound source in a resonant mode, the low-power-consumption and high-loudness alarm sound source is achieved. The utility model discloses sound is surging, can use with various detection device cooperations alone, can use and do theftproof, dangerous and signal alarm in various occasions.

Description

High-sound alarm loudspeaker

The utility model relates to a kind of loudspeaker, particularly a kind of high loudness alarming horn.

The general sound of existing common loudspeaker is less, and will cooperate with other circuit and could work, and usable range is subjected to certain limitation.

The purpose of this utility model is to avoid above-mentioned the deficiencies in the prior art part and provides a kind of sound loud and clear, can be used on the high loudness alarming horn that various occasions are done the alerting signal source.

The purpose of this utility model can reach by following measure: the utility model comprises bonnet, binding, direct supply, it is characterized in that: also have sound source circuit, promote booster circuit, gather sound reflection cavity, resonator cavity, resonance piece, piezoelectric ceramic piece, the voice signal that sound source circuit produces is through promoting to deliver to piezoelectric ceramic piece after booster circuit amplifies.

The purpose of this utility model can also reach by following measure: poly-sound reflection cavity, resonator cavity, resonance piece and piezoelectric ceramic piece are loaded on one, and are loaded on the bonnet, and electronic circuit board also is loaded in the bonnet.The collector of triode BG1 joins by the base stage of C2 and BG2 in the sound source circuit, the collector of BG2 joins by the base stage of C1 and BG1, and link to each other with the BG4 base stage by D1, R6, R8, the collector of BG4 links to each other with the BG3 base stage by C4, and join by triode BG5 base stage in R9, C6 and the promotion booster circuit, BG5 and BG6 are connected into the complex pipe form, and its collector and the elementary of resonance transformer B are joined.

Fig. 1 is a functional-block diagram of the present utility model;

Fig. 2 is a STRUCTURE DECOMPOSITION synoptic diagram of the present utility model;

Fig. 3 is an electrical schematic diagram of the present utility model.

The utility model is described in further detail below in conjunction with accompanying drawing (embodiment):

With reference to Fig. 1, Fig. 2, the utility model is made up of sound source circuit 1, promotion booster circuit 2, poly-sound reflection cavity 3, resonator cavity 4, resonance piece 5, piezoelectric ceramic piece 6, bonnet 7, binding 8, direct supply 9, electronic circuit board 10 etc.Poly-sound reflection cavity 3, resonator cavity 4, resonance piece 5 are loaded on one with piezoelectric ceramic piece 6, and are loaded on the bonnet 7, and electronic circuit board 10 also is loaded in the bonnet 7, by binding 8 sealings.The lead-in wire of drawing from electronic circuit board 10 connects piezoelectric ceramic piece 6.

With reference to Fig. 3, sound source circuit 1 comprises triode BG1～BG4, resistance R 1～R10, capacitor C 1～C5, potentiometer W1～W4 etc.; Promote booster circuit 2 and comprise triode BG5, BG6, capacitor C 6, resistance R 11, transformer B etc.

During actual the use, when (or telechiric device, remote measurement switch, temperature-sensitive, temperature control, pressure-sensitive, air-sensitive, magnetosensitive, water level, electric current and voltage are spacing by power switch ... Deng) when circuit provides 3～15 volts of power supplys of direct current, the oscillatory circuit starting of oscillation that BG1 and BG2, BG3 and BG4 form, produce respectively the different signals of two frequencies mix deliver to BG5, BG6 amplifies, the excitation piezoelectric ceramic piece, and, send the different sound of tone with the efficient width of cloth ejaculation of resonance manner sound source.The sound level of its sounding is during greater than 120dB(voltage 12V, electric current 250mA), satisfy warning sound level needs.

In addition, the also available various music integrated circuit of the discrete component in the sound source circuit replace.

The utility model has following advantage compared to existing technology:

1, sound is loud and clear, can be used with various checkout gears separately, reaches the warning source of sound of low-power consumption, high loudness.

2, rational in infrastructure, modern design, convenient and practical, dependable performance can be applicable to various occasions and makes antitheft, danger and signal alarm.

Claims

1, a kind of high loudness alarming horn, comprise bonnet 7, binding 8, direct supply 9, it is characterized in that: also have sound source circuit 1, promote booster circuit 2, gather sound reflection cavity 3, resonator cavity 4, resonance piece 5, piezoelectric ceramic piece 6, the voice signal that sound source circuit 1 produces is through promoting to deliver to piezoelectric ceramic piece 6 after booster circuit amplifies.

2, loudspeaker according to claim 1 is characterized in that: poly-sound reflection cavity 3, resonator cavity 4, resonance piece 5 are loaded on one with piezoelectric ceramic piece 6, and are loaded on the bonnet 7, and electronic circuit board 10 also is loaded in the bonnet 7.

3, loudspeaker according to claim 1, it is characterized in that: the collector of triode BG1 joins by the base stage of C2 and BG2 in the sound source circuit 1, the collector of BG2 joins by the base stage of C1 and BG1, and link to each other with the BG4 base stage by D1, R6, R8, the collector of BG4 links to each other with the BG3 base stage by C4, and join by triode BG5 base stage in R9, C6 and the promotion booster circuit 2, BG5 and BG6 are connected into the complex pipe form, and its collector and the elementary of resonance transformer B are joined.