CN112599112A - Noise-reduction strong-sound electronic buzzer and control system thereof - Google Patents

Noise-reduction strong-sound electronic buzzer and control system thereof Download PDF

Info

Publication number
CN112599112A
CN112599112A CN202011490520.7A CN202011490520A CN112599112A CN 112599112 A CN112599112 A CN 112599112A CN 202011490520 A CN202011490520 A CN 202011490520A CN 112599112 A CN112599112 A CN 112599112A
Authority
CN
China
Prior art keywords
noise
disc
buckle
pipe
module
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN202011490520.7A
Other languages
Chinese (zh)
Other versions
CN112599112B (en
Inventor
张启远
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Xinyi Chengxiang Electronics Co ltd
Original Assignee
Xinyi Chengxiang Electronics Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Xinyi Chengxiang Electronics Co ltd filed Critical Xinyi Chengxiang Electronics Co ltd
Priority to CN202011490520.7A priority Critical patent/CN112599112B/en
Publication of CN112599112A publication Critical patent/CN112599112A/en
Application granted granted Critical
Publication of CN112599112B publication Critical patent/CN112599112B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • GPHYSICS
    • G10MUSICAL INSTRUMENTS; ACOUSTICS
    • G10KSOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K9/00Devices in which sound is produced by vibrating a diaphragm or analogous element, e.g. fog horns, vehicle hooters or buzzers
    • G10K9/12Devices in which sound is produced by vibrating a diaphragm or analogous element, e.g. fog horns, vehicle hooters or buzzers electrically operated
    • GPHYSICS
    • G10MUSICAL INSTRUMENTS; ACOUSTICS
    • G10KSOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K11/00Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/16Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • GPHYSICS
    • G10MUSICAL INSTRUMENTS; ACOUSTICS
    • G10KSOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K9/00Devices in which sound is produced by vibrating a diaphragm or analogous element, e.g. fog horns, vehicle hooters or buzzers
    • G10K9/18Details, e.g. bulbs, pumps, pistons, switches or casings

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Soundproofing, Sound Blocking, And Sound Damping (AREA)

Abstract

The invention discloses a noise-reducing and strong-sound electronic buzzer, which comprises a functional buckle disc, wherein a clamping cover is inserted at the top of the functional buckle disc, a main shell is arranged at the bottom of the functional buckle disc, a main control core body is arranged inside the main shell, the bottom of the main control core body is fixedly connected with a bottom buckle disc, a plurality of silencing tubes are arranged at the top of the bottom buckle disc at equal intervals, the main shell is cylindrical, the bottom of the main shell is arranged in a plurality of cavity grooves capable of accommodating the silencing tubes, transmission convex columns are arranged at the top ends inside the cavity grooves, movable rods are arranged at the bottoms of the transmission convex columns, the outer ends of the movable rods are connected with metal sheets, and sound-absorbing cotton is attached to the inner walls of the silencing tubes; the bottom equidistance of function knot dish is provided with a plurality of pole, the pole is rectangular form and the middle strip-shaped hole of having seted up. The invention can be assembled and disassembled quickly, is convenient for replacing and installing internal parts, is easy to maintain and repair and is more convenient to use.

Description

Noise-reduction strong-sound electronic buzzer and control system thereof
Technical Field
The invention relates to the technical field of buzzer equipment, in particular to a noise-reducing strong-sound electronic buzzer and a control system thereof.
Background
The buzzer is an electronic buzzer with an integrated structure, adopts direct current voltage for power supply, and is widely applied to electronic products such as computers, printers, copiers, alarms, electronic toys, automobile electronic equipment, telephones, timers and the like as a sounding device. The buzzer is mainly divided into two types, namely a piezoelectric buzzer and an electromagnetic buzzer. The packaging of the buzzer is a direct-insertion piezoelectric buzzer which mainly comprises a multivibrator, a piezoelectric buzzer piece, an impedance matcher, a resonator and the like. The piezoelectric buzzer shell is also provided with a light emitting diode. Because the self-excited buzzer is driven by direct-current voltage, an alternating-current signal is not required for driving, and the buzzer can make a sound only by outputting a driving level to a driving port and amplifying a driving current through a triode. After the power supply is switched on, the audio signal current generated by the oscillator passes through the electromagnetic coil, so that the electromagnetic coil generates a magnetic field. The vibrating diaphragm periodically vibrates to produce sound under the interaction of the electromagnetic coil and the magnet.
Current bee calling organ adopts the closed integral type design in the use mostly, is not convenient for maintain and repair, lacks the structure of making an uproar of falling simultaneously, and the noise that produces is too big, influences the result of use, and whole system is too single, and intelligent degree is lower. For this reason, a corresponding technical scheme needs to be designed to solve the existing technical problems.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides a noise-reducing strong-sound electronic buzzer and a control system thereof, and solves the problems that: current bee calling organ adopts the closed integral type design in the use mostly, is not convenient for maintain and repair, lacks the structure of making an uproar of falling simultaneously, and the noise that produces is too big, influences the result of use, and whole system is too single, the lower problem of intelligent degree.
(II) technical scheme
In order to achieve the purpose, the invention is realized by the following technical scheme: a noise-reducing and sound-intensifying electronic buzzer comprises a function buckle disc, wherein a clamping cover is inserted into the top of the function buckle disc, a main shell is arranged at the bottom of the function buckle disc, a main control core body is arranged inside the main shell, the bottom of the main control core body is fixedly connected with a bottom buckle disc, a plurality of sound-attenuating pipes are arranged at the top of the bottom buckle disc at equal intervals, the main shell is cylindrical, the bottom of the main shell is arranged in a plurality of cavity grooves capable of accommodating the sound-attenuating pipes, transmission convex columns are arranged at the top ends inside the cavity grooves, movable rods are arranged at the bottoms of the transmission convex columns, metal sheets are connected to the outer ends of the movable rods, and sound-absorbing cotton is attached to the inner walls of the sound-attenuating pipes;
the bottom equidistance that the dish was detained to the function is provided with a plurality of post, the post is rectangular form and the centre has seted up the bar hole, the top correspondence of the main casing body is provided with a plurality of and agrees with the piece, the outside of agreeing with the piece is provided with the cushion that corresponds with bar hole size, and sets up threaded hole on the cushion, the function is detained the dish and is fixed through the bolt with main casing body lock.
In a further preferred embodiment of the present invention, the chuck cover is in a disk shape, a detachable cover plate is provided on the top of the chuck, and an indicator lamp is provided inside the cover plate.
As a further preferable mode of the present invention, a backing plate is disposed in the middle of the functional buckle disk, a through hole is disposed in the center of the backing plate, a guide pillar tube is disposed in the middle of the through hole, a plurality of insertion tubes are disposed at equal intervals on the outer side of the guide pillar tube, and a buckle tube corresponding to the insertion tubes is disposed at the bottom of the clamp cover.
As a further preferable mode of the invention, a plurality of grooves in the shape of a semicircular arc are equidistantly formed on the inner wall of the functional buckle plate, lugs are symmetrically arranged on both sides of the outer wall of the functional buckle plate, and mounting holes are formed on the lugs.
As a further preferable mode of the present invention, the guide pillar tube is a cylindrical body and has a cavity inside, guide plates are disposed at both ends of the cavity, the guide plates are hemispheric bodies and have openings at inner ends, and a noise reduction structure is disposed in the middle of the guide pillar tube.
As a further preferable mode of the present invention, the noise reduction structure is a honeycomb-shaped noise reduction plate, the noise reduction plate is integrally attached to the inner wall of the guide pillar tube, a plurality of strip-shaped channels are arranged inside the noise reduction plate, and a plurality of pillar grooves are equidistantly arranged on the inner side of each channel.
As a further preferable mode of the present invention, a control system is disposed inside the main control core, the control system includes a central processing module, a communication module, a vibration module, a lighting control module, and a preset value management module, and the central processing module, the communication module, the vibration module, the lighting control module, and the preset value management module are all interconnected.
(III) advantageous effects
The invention provides a noise-reducing strong-sound electronic buzzer and a control system thereof. The method has the following beneficial effects:
(1) the invention can be assembled and disassembled quickly, is convenient for replacing and installing internal parts, is easy to maintain and repair and is more convenient to use.
(2) According to the invention, the cavity groove is added at the bottom in the protective shell, and the transmission convex column is added in the cavity groove, so that excessive vibration energy can be transmitted to the movable rod, the movable rod transmits the vibration energy to the metal sheet for vibration, energy is consumed, meanwhile, sound is generated, and the sound can be absorbed through the sound absorption cotton in the silencer.
(3) According to the invention, the guide column pipe is added in the middle of the functional buckle plate, the guide plates are added on two sides inside the guide column pipe, redundant noise can be remained in the silencing plate inside the guide column pipe, the honeycomb-coal-shaped silencing plate is used for secondary consumption, and the whole noise reduction effect is good.
(4) According to the invention, the control system is added in the main control core body, signals can be transmitted through a network, and the intelligent control system is more intelligent.
Drawings
FIG. 1 is a schematic view of the overall external structure of the present invention;
FIG. 2 is a schematic structural view of a front view explosion of the present invention;
FIG. 3 is a schematic front view of the present invention;
FIG. 4 is a schematic structural view of the interior of the outer wall of the main housing of the present invention;
FIG. 5 is a schematic view of the interior of the catheter tube of the present invention;
fig. 6 is a schematic diagram of the principle framework structure of the control system of the present invention.
In the figure, 1, a functional buckle disc; 2. a cover is clamped; 3. a main housing; 4. a main control core body; 5. a bottom buckle plate; 6. A sound-deadening tube; 7. a transmission convex column; 8. a movable rod; 9. a metal foil; 10. sound-absorbing cotton; 11. a post rod; 12. a wedge block; 13. cushion blocks; 14. a cover plate; 15. a base plate; 16. a guide post tube; 17. inserting a tube; 18. Buckling a pipe; 19. a lug; 20. a guide plate; 21. a noise reduction structure; 22. a channel; 23. and (4) a column groove.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-6, an embodiment of the present invention provides a technical solution: a noise-reducing and sound-enhancing electronic buzzer comprises a function buckle disc 1, wherein a clamping cover 2 is inserted into the top of the function buckle disc 1, a main shell 3 is arranged at the bottom of the function buckle disc 1, a main control core 4 is arranged inside the main shell 3, the bottom of the main control core 4 is fixedly connected with a bottom buckle disc 5, a plurality of silencing tubes 6 are arranged at the top of the bottom buckle disc 5 at equal intervals, the main shell 3 is cylindrical, the bottom of the main shell 3 is arranged in a plurality of cavity grooves capable of accommodating the silencing tubes 6, a transmission convex column 7 is arranged at the top end inside the cavity grooves, a movable rod 8 is arranged at the bottom of the transmission convex column 7, the outer end of the movable rod 8 is connected with a metal sheet 9, and a piece of sound-absorbing cotton 10 is attached to the inner wall of the silencing tube 6; the bottom equidistance that the function was detained and is coiled 1 is provided with a plurality of post 11, the bar hole has been seted up in the middle of post 11 is rectangular form and, the top correspondence of the main casing body 3 is provided with a plurality of and contracts piece 12, the outside that contracts piece 12 is provided with the cushion 13 that corresponds with bar hole size, and sets up threaded hole on the cushion 13, the function is detained and is coiled 1 and the main casing body 3 lock and fix through the bolt.
The card lid 2 is disc shape, and the top of chuck is provided with removable cover dish 14, the inside of cover dish 14 is provided with the pilot lamp, can use cover dish 14 to shelter from the pilot lamp through such design.
The centre of function buckle dish 1 is provided with backing plate 15, and the center department of backing plate 15 has seted up the through-hole, and the centre of through-hole is provided with guide pillar pipe 16, is located the outside equidistance of guide pillar pipe 16 is provided with a plurality of intubate 17, the bottom of card lid 2 is provided with detains pipe 18 corresponding with intubate 17, can use intubate 17 and detain the quick lock of pipe 18 through such design, and it is comparatively convenient to install.
Lie in the recess that a plurality of is the semicircle arc body is seted up to the inner wall equidistance of function buckle dish 1, the outer wall both sides of function buckle dish 1 still symmetry are provided with lug 19, all seted up the mounting hole on lug 19, can use the mounting hole on lug 19 to cooperate through such design and install whole equipment.
The guide pillar pipe 16 is cylindrical and is internally provided with a cavity, the two ends of the cavity are respectively provided with a guide plate 20, the guide plates 20 are hemispheroid and are provided with openings at the inner ends, the noise reduction structure 21 is arranged in the middle of the guide pillar pipe 16, and the guide plates 20 can be used for transmitting the energy of vibration at the two sides to the inside of the guide pillar pipe 16 through the design.
Noise reduction structure 21 is for being the acoustical panel of honeycomb briquette form, the acoustical panel is whole to be laminated with guide post pipe 16 inner wall and inside sets up the passageway 22 of a plurality of rectangular shape, passageway 22's inboard still equidistance is provided with a plurality of post groove 23, can use passageway 22 cooperation to consume the noise through such design, and the acoustical panel of honeycomb briquette form can promote to fall the noise simultaneously.
The control system is arranged in the main control core body 4 and comprises a central processing module, a communication module, a vibration module, a light control module and a preset value management module, wherein the central processing module, the communication module, the vibration module, the light control module and the preset value management module are communicated with one another.
The working principle is as follows: in the use, main casing body 3 carries out the lock with end knot dish 5, when inside production noise, noise energy transmission is to main casing body 3 intracavity portion, transmission projection 7 transmission vibration energy gives movable rod 8 and foil 9, the noise is consumed in the vibration, and the noise of production, can also use inside to inhale sound cotton 10 and absorb, the guide pillar pipe on the use function knot dish 1 simultaneously dissipates the noise, specifically can use the acoustical panel of honeycomb briquette form, use its inside passageway 22 cooperation post groove 23 to consume, in the whole use, control system adds communication module, accessible wireless transmission's mode, transmit signals, it is comparatively intelligent.
The invention 1, function buckle plate; 2. a cover is clamped; 3. a main housing; 4. a main control core body; 5. a bottom buckle plate; 6. A sound-deadening tube; 7. a transmission convex column; 8. a movable rod; 9. a metal foil; 10. sound-absorbing cotton; 11. a post rod; 12. a wedge block; 13. cushion blocks; 14. a cover plate; 15. a base plate; 16. a guide post tube; 17. inserting a tube; 18. Buckling a pipe; 19. a lug; 20. a guide plate; 21. a noise reduction structure; 22. a channel; 23. the column groove, the part is the general standard part or the part known by technicians in the field, the structure and the principle of the column groove can be known by technicians through technical manuals or conventional experimental methods, the problems solved by the invention are that the prior buzzer mostly adopts a closed integrated design in the using process, is inconvenient to maintain and repair, simultaneously lacks a noise reduction structure, generates overlarge noise, influences the using effect, has too single integral system and lower intelligent degree, the whole body can be rapidly assembled and disassembled through the mutual combination of the parts, the replacement and the installation of internal parts are convenient, the maintenance and the repair are easy, the use is convenient, the cavity groove is added at the inner bottom of the protective shell, the transmission convex column is added in the cavity groove, and the excessive vibration energy can be transmitted to the movable rod, the movable rod transmits vibration energy to the metal sheet to vibrate, so that energy is consumed, sound is generated at the same time, and the vibration energy can be absorbed through sound absorption cotton in the silencing pipe.
While there have been shown and described what are at present considered the fundamental principles and essential features of the invention and its advantages, it will be apparent to those skilled in the art that the invention is not limited to the details of the foregoing exemplary embodiments, but is capable of other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims (7)

1. The utility model provides a make an uproar strong sound electron buzzer falls which characterized in that: comprises a functional buckle disk (1), a clamping cover (2) is inserted at the top of the functional buckle disk (1), the bottom of the functional buckle disk (1) is provided with a main shell (3), a main control core body (4) is arranged inside the main shell (3), the bottom of the main control core body (4) is fixedly connected with a bottom buckle disc (5), a plurality of silencing tubes (6) are arranged on the top of the bottom buckle disc (5) at equal intervals, the main shell body (3) is cylindrical, the bottom of the main shell (3) is arranged in a plurality of cavity grooves capable of accommodating the silencing tubes (6), the top end in the cavity grooves is provided with a transmission convex column (7), a movable rod (8) is arranged at the bottom of the transmission convex column (7), the outer end of the movable rod (8) is connected with a metal sheet (9), and sound absorption cotton (10) is attached to the inner wall of the silencing pipe (6);
the bottom equidistance of function knot dish (1) is provided with a plurality of post (11), bar hole has been seted up in the middle of post (11) is rectangular form and, the top correspondence of the main casing body (3) is provided with a plurality of and agrees with piece (12), the outside of agreeing with piece (12) is provided with cushion (13) that correspond with bar hole size, and sets up threaded hole on cushion (13), function knot dish (1) is fixed through the bolt with main casing body (3) lock.
2. A noise-reducing loud electronic buzzer as claimed in claim 1, wherein: the clamping cover (2) is in a disc shape, a detachable cover disc (14) is arranged at the top of the clamping disc, and an indicator lamp is arranged inside the cover disc (14).
3. A noise-reducing loud electronic buzzer as claimed in claim 1, wherein: the middle of function knot dish (1) is provided with backing plate (15), and the center department of backing plate (15) has seted up the through-hole, and the middle of through-hole is provided with guide pillar pipe (16), is located the outside equidistance of guide pillar pipe (16) is provided with a plurality of intubate (17), the bottom of card lid (2) is provided with detains pipe (18) corresponding with intubate (17).
4. A noise-reducing loud electronic buzzer as claimed in claim 1, wherein: lie in the recess that a plurality of is the semicircle arc body is seted up to the inner wall equidistance of function buckle dish (1), the outer wall both sides of function buckle dish (1) still symmetry are provided with lug (19), all seted up the mounting hole on lug (19).
5. A noise-reducing loud electronic buzzer as claimed in claim 1, wherein: the guide post pipe (16) is a cylindrical body, a cavity is formed in the guide post pipe, guide plates (20) are arranged at two ends of the cavity, the guide plates (20) are hemispherical bodies, openings are formed in the inner ends of the guide plates (20), and a noise reduction structure (21) is arranged in the middle of the guide post pipe (16).
6. A noise-reducing loud electronic buzzer as claimed in claim 5, wherein: the utility model discloses a noise reduction structure, including noise reduction structure (21), the whole channel (22) that laminate and inside set up a plurality of rectangular shape of noise reduction structure (21) for being the acoustical panel of honeycomb briquette form, the inboard still equidistance of channel (22) is provided with a plurality of post groove (23).
7. A noise-reducing loud electronic buzzer as claimed in claim 1, wherein: the intelligent lamp control system is characterized in that a control system is arranged inside the main control core body (4), the control system comprises a central processing module, a communication module, a vibration module, a lamp control module and a preset value management module, and the central processing module, the communication module, the vibration module, the lamp control module and the preset value management module are communicated with one another.
CN202011490520.7A 2020-12-16 2020-12-16 Noise-reduction strong-sound electronic buzzer and control system thereof Active CN112599112B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202011490520.7A CN112599112B (en) 2020-12-16 2020-12-16 Noise-reduction strong-sound electronic buzzer and control system thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202011490520.7A CN112599112B (en) 2020-12-16 2020-12-16 Noise-reduction strong-sound electronic buzzer and control system thereof

Publications (2)

Publication Number Publication Date
CN112599112A true CN112599112A (en) 2021-04-02
CN112599112B CN112599112B (en) 2022-01-28

Family

ID=75196584

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202011490520.7A Active CN112599112B (en) 2020-12-16 2020-12-16 Noise-reduction strong-sound electronic buzzer and control system thereof

Country Status (1)

Country Link
CN (1) CN112599112B (en)

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004196185A (en) * 2002-12-19 2004-07-15 Sumitomo (Shi) Construction Machinery Manufacturing Co Ltd Back buzzer volume control device of road machine
CN204270650U (en) * 2014-11-17 2015-04-15 深圳市声辉电子有限公司 Piezoelectric type active buzzer
CN204834030U (en) * 2015-07-10 2015-12-02 常州汇森电子有限公司 Forte electron buzzer of making an uproar falls
US20170018266A1 (en) * 2015-07-13 2017-01-19 Richard Keeler Modular Acoustic Sound Processor
CN207663526U (en) * 2017-12-18 2018-07-27 兴化市天华机电有限公司 A kind of safety alarm buzzer
CN208041464U (en) * 2018-04-11 2018-11-02 南安辰光日用化工品有限公司 A kind of daily chemicals processing equipment damped noise reduction device
CN111127801A (en) * 2018-10-31 2020-05-08 江门市奇斌模具制品有限公司 Buzzing fire alarm

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004196185A (en) * 2002-12-19 2004-07-15 Sumitomo (Shi) Construction Machinery Manufacturing Co Ltd Back buzzer volume control device of road machine
CN204270650U (en) * 2014-11-17 2015-04-15 深圳市声辉电子有限公司 Piezoelectric type active buzzer
CN204834030U (en) * 2015-07-10 2015-12-02 常州汇森电子有限公司 Forte electron buzzer of making an uproar falls
US20170018266A1 (en) * 2015-07-13 2017-01-19 Richard Keeler Modular Acoustic Sound Processor
CN207663526U (en) * 2017-12-18 2018-07-27 兴化市天华机电有限公司 A kind of safety alarm buzzer
CN208041464U (en) * 2018-04-11 2018-11-02 南安辰光日用化工品有限公司 A kind of daily chemicals processing equipment damped noise reduction device
CN111127801A (en) * 2018-10-31 2020-05-08 江门市奇斌模具制品有限公司 Buzzing fire alarm

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
VALENTE, MIKE PESSANHA,ET AL: "Sensor based on piezo buzzers for simultaneous measurement of fluid viscosity and density", 《MEASUREMENT》 *

Also Published As

Publication number Publication date
CN112599112B (en) 2022-01-28

Similar Documents

Publication Publication Date Title
CN216960110U (en) Loudspeaker box
CN101662715B (en) Multipurpose bidirectional horn loudspeaker
CN112599112B (en) Noise-reduction strong-sound electronic buzzer and control system thereof
US8416979B2 (en) Earphone
CN212936193U (en) Sound production module
CN211930850U (en) Directional sound production device
CN217240925U (en) Sound production module and electronic equipment
CN210536876U (en) Vehicle-mounted sound box with damping effect
CN211047193U (en) Shock-proof type audio amplifier loudspeaker with protective structure
CN212519423U (en) Sound horn with shock-absorbing function
CN103745717A (en) Double-driving buzzer
CN218734912U (en) Novel waterproof sound cavity
CN111711898A (en) Sound production device module
CN216905211U (en) Sound equipment
CN102651829A (en) Loudspeaker box
CN110830883A (en) Electroacoustic converter with waterproof effect
CN210491135U (en) Miniature passive radiator audio amplifier
CN220629541U (en) In-ear earphone for improving low-frequency response by using passive module
CN219960766U (en) Coaxial foldback sound box
CN219329818U (en) Loss-preventing TWS Bluetooth headset
CN212259314U (en) KTV lighting system
CN219981031U (en) Coaxial loudspeaker
CN218237417U (en) Classroom lamp
CN216057372U (en) Sound box
CN218277007U (en) Included angle type loudspeaker box load

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant