CN207765159U - A kind of electromagnetic type transistor active buzzer - Google Patents

Abstract

The utility model is related to a kind of electromagnetic type transistor active buzzers, including shell, enclosure periphery is equipped with sealing ring, enclosure is equipped with transistor, and transistor is equipped with oscillator, oscillator connection vibrations diaphragm, it shakes diaphragm and connects electromagnetic coil, electromagnetic coil surrounds magnet, and magnet connects driving circuit, and driving circuit is located on transistor.The utility model is simple in structure, it is at low cost, using the nickel cobalt oxide alloy silk of 8-shaped layout, contact area is big, it is used in conjunction with magnet, the magnetism of generation is big, keep the magnitude of current big, power foot, improve working efficiency, reduce eddy current loss, also save electric power resource simultaneously, it is cost-effective, the signal that driving circuit can be turned it on or be turned off, using transistor arrangement, fast response time, accuracy is high, it is error free, it can receive unlike signal from driving circuit, generate different frequencies, promote oscillator vibration frequency inconsistent, to drive vibrations diaphragm, pronunciation difference, improve working efficiency.

Description

A kind of electromagnetic type transistor active buzzer

Technical field

The utility model is related to a kind of electromagnetic type transistor active buzzers.

Background technology

Buzzer is a kind of electronics buzzer of integral structure, using DC-voltage supply, be widely used in computer, Make acoustical generator in the electronic products such as printer, duplicator, alarm, electronic toy, vehicle electronics, telephone set, timer Part.Buzzer is broadly divided into piezo buzzer and electromagnetic buzzer two types.Most existing buzzer is all made of pressure Electric-type, because of requirement with high accuracy, electromagnetic buzzer market is more and more sufficient, but on the current technology, and precision is not high, accurate True property is low, uses for a long time, phenomena such as damage, short circuit easily occurs, reduces its service life.

Invention content

The purpose of this utility model is that a kind of electromagnetic type transistor active buzzer, to solve existing technical problem.

To achieve the above object, the utility model provides the following technical solutions：A kind of electromagnetic type transistor active buzzer, Including shell, enclosure periphery is equipped with sealing ring, and enclosure is equipped with transistor, and transistor is equipped with oscillator, oscillator Connection shakes diaphragm, the aperture on the resonant tank connected with outer casing of vibration membrane on piece, and vibrations diaphragm connects electromagnetic coil, electromagnetic coil Magnet is surrounded, magnet connects driving circuit, and driving circuit is located on transistor.

Further improvement of the utility model is：Emitter, base stage and the current collection that transistor is made of N-type with p-type Pole, wherein emitter and base stage extend to outer side, and transistor surface is coated with ceramic layer.

Further improvement of the utility model is：Electromagnetic coil is woven using multiply nickel cobalt oxide alloy silk in 8-shaped It forms.

Further improvement of the utility model is：Vibrations membrane surface is coated with insulated paint.

Compared with prior art, the utility model has the beneficial effects that：

The utility model is simple in structure, at low cost, and using the nickel cobalt oxide alloy silk of 8-shaped layout, hardness is big, toughness Good, contact area is big, is used in conjunction with magnet, and the magnetism of generation is big, keeps the magnitude of current big, and power foot improves working efficiency, reduces whirlpool Stream loss, while electric power resource is also saved, cost-effective, the signal that driving circuit can be turned it on or be turned off, using crystal Pipe structure, fast response time, accuracy is high, error free, can receive unlike signal from driving circuit, generate different frequencies, Promote oscillator vibration frequency inconsistent, to drive vibrations diaphragm, the sounding from resonant tank connects aperture, expands the sound, carries High working efficiency, the insulated paint and ceramic layer being coated with, using sealing ring, are prevented at phenomena such as making structure be not susceptible to damage, short circuit Dirt, dampproof effect are good, and sealing effect is good, and service life is long.

Description of the drawings：

Fig. 1：The structural schematic diagram of the utility model

Figure label：1- shells, 2- sealing rings, 3- transistors, 4- oscillators, 5- shake diaphragm, 6- electromagnetic coils, 7- magnetic Iron, 8- driving circuits.

Specific implementation mode

The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model It clearly and completely describes, it is clear that described embodiment is only the utility model a part of the embodiment, rather than whole realities Apply example.Based on the embodiments of the present invention, those of ordinary skill in the art institute without making creative work The every other embodiment obtained, shall fall within the protection scope of the present invention.

The utility model provides a kind of technical solution：

A kind of electromagnetic type transistor active buzzer, including shell 1,1 interior periphery of shell are equipped with sealing ring 2, sealing ring Using silica gel material, high temperature resistant is corrosion-resistant, moisture-proof, good dustproof effect, and shell 1 is internally provided with transistor 3, and transistor 3 is by N Emitter, base stage and the collector that type is formed with p-type, wherein emitter and base stage extend to 1 outside of shell, 3 surface of transistor It is coated with ceramic layer, insulation effect is good, fast response time, and accuracy is high, and transistor 3 is equipped with oscillator 4, the connection shake of oscillator 4 Dynamic diaphragm 5, shakes the aperture on the loudspeaker connected with outer casing 1 on diaphragm 5, and 5 surface of vibrations diaphragm is coated with insulated paint, passes through oscillator 4 concussions make vibrations diaphragm 5 shake, and to sounding, transistor 3 can receive unlike signal from driving circuit 8, generate different frequencies Rate promotes 4 vibration frequency of oscillator inconsistent, to drive vibrations diaphragm 5, from resonant tank sounding, connects aperture, expansion sound Phenomena such as ringing, raising working efficiency, precision height, being not susceptible to damage, short circuit, the vibrations connection electromagnetic coil 6 of diaphragm 5, electromagnetism Coil 6 is woven using multiply nickel cobalt oxide alloy silk in 8-shaped, and 8-shaped braiding, not only stable structure is secured, and toughness Good, contact area is big, and the magnetism that nickel cobalt oxide alloy silk generates is strong, keeps the magnitude of current big, and power foot improves working efficiency, reduces Eddy current loss, electromagnetic coil 6 surround magnet 7, and stable structure is secured, magnetic good absorption effect, and magnet 7 connects driving circuit 8, drive Dynamic circuit 8 is located on transistor 3, and the signal that information electronic circuit is transmitted is converted to and is added according to the requirement of its control targe Between power electronic devices control terminal and common end, the signal that can be turned it on or turn off, signal reception is strong, connects electricity Behind source, the voice-frequency signalling current that oscillator generates makes electromagnetic coil generate magnetic field, vibrating diaphragm is in electromagnetic wire by electromagnetic coil It encloses under the interaction with magnet, periodically vibration sounding.

While there has been shown and described that the embodiments of the present invention, for the ordinary skill in the art, It is appreciated that can these embodiments be carried out with a variety of variations in the case where not departing from the principles of the present invention and spirit, repaiied Change, replace and modification, the scope of the utility model are defined by the appended claims and the equivalents thereof.

Claims (4)

1. a kind of electromagnetic type transistor active buzzer, including shell（1）, it is characterised in that：The shell（1）Interior periphery is set There is sealing ring（2）, the shell（1）It is internally provided with transistor（3）, the transistor（3）It is equipped with oscillator（4）, described to shake Swing device（4）Connection vibrations diaphragm（5）, the vibrations diaphragm（5）On resonant tank connected with outer casing（1）On aperture, the vibrations Diaphragm（5）Connect electromagnetic coil（6）, the electromagnetic coil（6）Surround magnet（7）, the magnet（7）Connect driving circuit（8）, The driving circuit（8）It is located at transistor（3）On.

2. a kind of electromagnetic type transistor active buzzer according to claim 1, it is characterised in that：The transistor（3） Emitter, base stage and the collector being made of with p-type N-type, wherein emitter and base stage extend to shell（1）Outside, it is described Transistor（3）Surface is coated with ceramic layer.

3. a kind of electromagnetic type transistor active buzzer according to claim 1, it is characterised in that：The electromagnetic coil （6）It is woven in 8-shaped using multiply nickel cobalt oxide alloy silk.

4. a kind of electromagnetic type transistor active buzzer according to claim 1, it is characterised in that：The vibrations diaphragm （5）Surface is coated with insulated paint.