CN207268933U - A kind of multifrequency buzzer - Google Patents
A kind of multifrequency buzzer Download PDFInfo
- Publication number
- CN207268933U CN207268933U CN201721102395.1U CN201721102395U CN207268933U CN 207268933 U CN207268933 U CN 207268933U CN 201721102395 U CN201721102395 U CN 201721102395U CN 207268933 U CN207268933 U CN 207268933U
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- China
- Prior art keywords
- buzzer
- multifrequency
- housing
- control chip
- upper cover
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Abstract
The utility model discloses a kind of multifrequency buzzer, including housing and upper cover, wherein, cavity is equipped with housing, wiring board is equipped with cavity, upper cover and housing are in detachable connection；Wiring board includes phonation circuit and switches the switching switch of phonation circuit frequency, and switching switch is set towards upper cover direction；The utility model has the characteristics that multifrequency, is used alone.
Description
Technical field
It the utility model is related to a kind of multifrequency buzzer.
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, but in the prior art, buzzer, which is powered, can only send a kind of sound of frequency, if in use, it is necessary in addition
The sound or muli-sounds of a kind of frequency, then need to adjust corresponding circuit, cumbersome；Have on the market with double frequency buzzing
The product of device, but the buzzer circuit on such a product and the public same wiring board of this product, can not be used alone, dismount
It is inconvenient.
The content of the invention
The utility model is mainly solving the technical problems that provide a kind of double frequency, the buzzer being used alone.
Technical solution is used by the utility model solves its technical problem：A kind of multifrequency buzzer, including housing
And upper cover, it is characterised in that：Cavity is equipped with housing, wiring board is equipped with cavity, upper cover and housing are in detachable connection；
Wiring board includes phonation circuit, control chip and switching switch, and phonation circuit is electrically connected with control chip；In control chip
Equipped with multiple audible frequencies；Switching switch is used for the audible frequency of switching control chip, and switching switch is set towards upper cover direction.
Using the setting of switching frequency, ensure that a buzzer can send at least two sound；Can between upper cover and housing
It is detachably connected with and the setting of switching switch so that buzzer frequency switching is more convenient in use.And switch
Switch is set towards upper cover direction, is only needed opening upper cover to press switching switch when replacing buzzer frequency and is selected different buzzers
Frequency.
Wherein, control chip includes at least three input ports；Switching switch includes at least three contact pins and jumper cap,
Contact pin input port corresponding with control chip is connected, and any two contact pin turns on to form a kind of audible frequency, and jumper cap is used to connect
Connect and turn on any two contact pin.
By the connection of jumper cap and contact pin, ensure the reliability being electrically connected between contact pin, the button switch that compares etc.
It is more long to switch such a structure setting service life.
Wherein, protrusion is equipped with cavity, wiring board bottom offsets with protrusion.
Raised setting so that wiring board fixation is more convenient, can further be fixed by bolt and protrusion, strengthens circuit
Fixing intensity between plate and housing.
Wherein, upper cover is equipped with external screw thread I, and internal thread I is equipped with housing, and upper cover is threaded with housing, and on upper lid
Equipped with via.
Using threaded connection, facilitate the dismounting between upper cover and housing；The setting of via so that the sound that buzzer produces
It is more prone to propagate.
Wherein, base is further included, base is equipped with extension, and housing bottom is equipped with the notch being adapted to extension, extension
Portion can be stretched in notch.
The plug-in of base and housing coordinates, and convenient dismounting, is realized with the cooperation of notch by extension and engaged.
Wherein, extension is equipped with clamping protrusion, and corresponding card slot is equipped with notch.
The raised cooperation with card slot of clamping so that plug is more convenient.
Wherein, isolation board is further included, base is equipped with mounting hole, and housing bottom is equipped with wiring hole, and wiring hole number is two
A, isolation board is located in housing hollow and isolates two wiring holes, and mounting hole is connected with wiring hole.
Outer lead is penetrated into wiring hole, is penetrated in mounting hole and fixed by bolt, and such a construction guidelines are fixed；
Isolated using isolation board, prevent that creepage phenomenon occurs between conducting wire.
Wherein, fastener is further included, fastener is equipped with internal thread II, and housing exterior walls are equipped with external screw thread II, fastener
Coordinate with housing.
The practicality of fastener so that housing is fixed more firm.
Wherein, power circuit I, power circuit II and control chip are additionally provided with wiring board, power circuit I gives sounding electricity
Road powers；Power circuit II is powered to control chip；Contact pin port connection corresponding with control chip.
Powered respectively to phonation circuit and control chip by stable power supply, ensure the stability of power supply, lead at the same time
Control chip control buzzer work is crossed, since control chip is internally provided with memory space, multi-frequency is equipped with memory space
Set, control chip is by differentiating the signal of switching switch, there is provided corresponding frequency so that phonation circuit sends different sound
Sound.
Wherein, indicating circuit is further included, indicating circuit is used for the working status for showing phonation circuit.
By the cooperation of indicating circuit and phonation circuit, the state for the observation buzzer entirety that can be more prone to, is played
The effect of dual instruction.
Brief description of the drawings
Fig. 1 is the structure diagram of the utility model embodiment 1；
Fig. 2 is the explosive view of the utility model embodiment 1；
Fig. 3 is the sectional view of the utility model embodiment 1；
Fig. 4 is the wiring board schematic diagram of the utility model embodiment 1.
Embodiment
Embodiment 1：
Referring to the drawings shown in 1-4, a kind of multifrequency buzzer, including housing 1, upper cover 2, base 3, fastener 4 and be equipped with
Wiring board 5.
1 is equipped with upper plenum 11 and lower cavity 12 in housing, and upper plenum 11 is connected with lower cavity 12, and upper plenum 11 is by upper
Lid 2 closes, and lower cavity 12 is closed by base 3；Upper cover 2 is equipped with external screw thread I 21, and internal thread I 13 is equipped with upper plenum 11 so that
Upper cover 2 and upper plenum 11 are in detachable connection；In addition, upper cover 2 is equipped with via 22, the circumferentially battle array in upper cover 2 of via 22
Column distribution, the via 22 positioned at center are set for arc waist type, and via 22 is used for entrant sound；Mistake of the upper cover 2 away from center
Hole 22 is set for circular hole；Via 22 positioned at 2 both sides of upper cover is waist-shaped hole and centrally disposed towards upper cover 2.
3 side wall of base is equipped with extension 31, and extension 31 is equipped with clamping protrusion 311, and lower 12 bottom of cavity, which is equipped with, to be lacked
Mouthfuls 121, is equipped with corresponding card slot 122 in notch 121, extension 31 can be stretched in notch 121, by be clamped protrusion 311 and
The cooperation of card slot 122, which is realized, to be fixed.
Base 3 is equipped with mounting hole 32, and lower 12 bottom of cavity is equipped with wiring hole 123, and mounting hole 32 connects with wiring hole 123
It is logical；Herein 123 quantity of wiring hole be two, by the isolation board 6 in lower cavity 12 by two wiring holes 123 carry out every
From conducting wire is penetrated from wiring hole 123, and bolt is penetrated from mounting hole 32, and conducting wire is fixed in wiring hole 123, ensures wiring
Fastness, herein wiring hole 123 be connected with notch 121.
Fastener 4 is equipped with internal thread II 41, and lower 12 outer wall of cavity is equipped with external screw thread II 124, fastener 4 and lower cavity
12 coordinate realization to fix.
Upper plenum 11 is equipped with protrusion 111, and 5 bottom of wiring board offsets with protrusion 111 so that wiring board 5 is located at upper plenum 11
It is interior；In addition, it can also form detent mechanism between protrusion 111 and wiring board 5 so that wiring board 5 is easier to realize positioning.
Wiring board 5 is equipped with power circuit I 54, power circuit II 55, indicating circuit 56, switching switch, phonation circuit 57
And control chip 59, power circuit I 54 are powered to phonation circuit 57；Power circuit II 55 is to control chip 59 and instruction electricity
Road 56 powers；Control chip 59 detects switching switch signal, and control phonation circuit 57 controls indicating circuit 56 and work.
Power circuit I is depressured by alternating current by the capacitance C2 and dropping resistor R2 pressure units in parallel formed, with rectification
The input terminal connection of device, rectifier ground terminal are connected to ground by resistance R8；The output terminal of rectifier and Opposite direction connection
The anode connection of voltage-stabiliser tube D1, the cathode of D1 is connected to ground, and the voltage at voltage-stabiliser tube D1 both ends is power circuit I herein, power supply
Module I optimal voltage is 15V, and power circuit I is in parallel with filter capacitor C1, is connected with one end of buzzer component；Power supply electricity
The input terminal on road I（That is the anode of voltage-stabiliser tube D1）Connect one end of divider resistance R3, the other end of R3 and the anode of voltage-stabiliser tube D2
Connection, the cathode of D2 is connected to ground, and the voltage at voltage-stabiliser tube D2 both ends is power circuit II herein, II optimal voltage of power module
For 5V, power circuit II is in parallel with capacitance C3, and one end of capacitance C3 is electric respectively at the input terminal connection and instruction of control chip
The input terminal connection on road, the other end of capacitance C3 are connected to ground.
The ground terminal of control chip and connection；Control chip includes COM1 ports, COM2 ports, COM3 ports, OUT2 ends
Mouth and OUT3 ports；COM1 ports are connected with the 3rd foot of contact pin CON1；COM2 ports are connected with the first foot of contact pin CON1,
The crus secunda ground connection of contact pin CON1；COM3 ports are connected with the first foot of contact pin CON2, contact pin CON2 crus secundas ground connection；OUT2 ends
Mouth is connected with resistance R5 one end；OUT3 ports are connected with resistance R4 one end.Herein, switching switch includes jumper cap 52, contact pin
CON1 and contact pin CON2, contact pin CON1 are 3P contact pins（There are three contact pins）, contact pin CON2 is 2P contact pins（There are two to insert
Pin）；Jumper cap 52 is used to connect two contact pins 51, by switching of the jumper cap 52 on two neighboring contact pin 51, adjusts buzzing
The frequency of device, realizes that buzzer sends different sound, and buzzer component 53 is fixed on front herein, i.e., towards upper cover direction
Simultaneously；Jumper cap 52 can only connect two neighboring contact pin 51, this is known technology, therefore does not add to repeat herein.
The anode of voltage-stabiliser tube D2 is connected with the collector of triode Q1, and the other end of buzzer component is with triode Q1's
Emitter is connected, and the ground level of triode Q1 is connected with one end of resistance R1；Triode Q1 is PNP type triode herein；Resistance R1
The other end be connected with the collector of triode Q2, the other end of resistance R4 is connected with the ground level of triode Q2, triode Q2's
Emitter is grounded, and connection herein forms phonation circuit 57.
One end of capacitance C3 is connected with resistance R6, Light-emitting diode LED 1 and Light-emitting diode LED 2, light emitting diode
The anode of LED2 is connected with the collector of triode Q3, and the ground level of triode Q3 is connected with the other end of resistance R5, triode Q3
Emitter ground connection, herein connection form indicating circuit 56.
Its operation principle is, when COM1 ports are connected to ground by jumper cap 52, control chip is by selecting internal deposit
Corresponding frequency in space is stored up, the output of corresponding OUT2 ports and OUT3 ports, realizes buzzer component sounding and shine
Diode (LED) is lighted, and buzzer can be rapid sounding herein, and Light-emitting diode LED does not stop to flicker；Similarly, COM2 ports and
When COM3 ports are connected to ground, buzzer component and Light-emitting diode LED are with different frequency sounding or instruction.
Claims (10)
1. a kind of multifrequency buzzer, including housing and upper cover, it is characterised in that：Cavity is equipped with housing, line is equipped with cavity
Road plate, upper cover and housing are in detachable connection；Wiring board includes phonation circuit, control chip and switching switch, sounding electricity
Road is electrically connected with control chip；Multiple audible frequencies are equipped with control chip；Switching switch is used for the hair of switching control chip
Acoustic frequency, switching switch are set towards upper cover direction.
A kind of 2. multifrequency buzzer as claimed in claim 1, it is characterised in that：Control chip includes at least three input terminals
Mouthful；Switching switch includes at least three contact pins and jumper cap, and contact pin input port corresponding with control chip is connected, and any two
Contact pin turns on to form a kind of audible frequency, and jumper cap is used to connect and turn on any two contact pin.
A kind of 3. multifrequency buzzer as claimed in claim 1, it is characterised in that：Be equipped with protrusion in cavity, wiring board bottom with
Protrusion offsets.
A kind of 4. multifrequency buzzer as claimed in claim 1, it is characterised in that：Upper cover is equipped with external screw thread I, is equipped with housing interior
Screw thread I, upper cover is threaded with housing, and upper lid is equipped with via.
A kind of 5. multifrequency buzzer as claimed in claim 1, it is characterised in that：Base is further included, base is equipped with extension,
Housing bottom is equipped with the notch being adapted to extension, and extension can be stretched in notch.
A kind of 6. multifrequency buzzer as claimed in claim 5, it is characterised in that：Extension, which is equipped with, is clamped protrusion, in notch
Equipped with corresponding card slot.
A kind of 7. multifrequency buzzer as claimed in claim 1, it is characterised in that：Isolation board is further included, base, which is equipped with, to be fixed
Hole, housing bottom are equipped with wiring hole, and wiring hole number is two, and isolation board is located in housing hollow and isolates two wiring holes,
Mounting hole is connected with wiring hole.
A kind of 8. multifrequency buzzer as described in claim 1 or 2 or 3 or 4 or 6 or 7, it is characterised in that：Further include fastener,
Fastener is equipped with internal thread II, and housing exterior walls are equipped with external screw thread II, and fastener coordinates with housing.
A kind of 9. multifrequency buzzer as claimed in claim 2, it is characterised in that：Power circuit I, power supply are additionally provided with wiring board
Circuit II, power circuit I are powered to phonation circuit, and power circuit II is powered to control chip.
A kind of 10. multifrequency buzzer as claimed in claim 9, it is characterised in that：Indicating circuit is further included, indicating circuit is used for
Show the working status of phonation circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721102395.1U CN207268933U (en) | 2017-08-30 | 2017-08-30 | A kind of multifrequency buzzer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721102395.1U CN207268933U (en) | 2017-08-30 | 2017-08-30 | A kind of multifrequency buzzer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207268933U true CN207268933U (en) | 2018-04-24 |
Family
ID=61960101
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721102395.1U Active CN207268933U (en) | 2017-08-30 | 2017-08-30 | A kind of multifrequency buzzer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207268933U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110415671A (en) * | 2019-06-14 | 2019-11-05 | 新沂市承翔电子有限公司 | A kind of electromagnetic buzzer having heat sinking function |
-
2017
- 2017-08-30 CN CN201721102395.1U patent/CN207268933U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110415671A (en) * | 2019-06-14 | 2019-11-05 | 新沂市承翔电子有限公司 | A kind of electromagnetic buzzer having heat sinking function |
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