CN214504977U

CN214504977U - Noise-reduction anti-interference piezoelectric buzzer

Info

Publication number: CN214504977U
Application number: CN202022769313.7U
Authority: CN
Inventors: 倪稳
Original assignee: Suqian Weimin Electronic Technology Co ltd
Current assignee: Suqian Weimin Electronic Technology Co ltd
Priority date: 2020-11-25
Filing date: 2020-11-25
Publication date: 2021-10-26
Anticipated expiration: 2030-11-25

Abstract

The utility model relates to a piezoelectricity buzzer technical field, and an anti-interference piezoelectricity buzzer of making an uproar falls is disclosed, including the casing and set up PCB board and the piezoelectric patches in the casing, the outer wall of casing has cup jointed the shielding shell, the top of piezoelectric patches is equipped with and draws in sound annular cover in, and draws in a plurality of public address diaphragms of the inner wall symmetry fixedly connected with of sound annular cover in, a plurality of public address diaphragm semicircle arc types set up, draw in the outer wall of sound annular cover and fix and cup joint the puigging of making an uproar that falls, casing open-ended one side is equipped with the apron, and the sound outlet has been seted up at the top of apron, the one end fixedly connected with commentaries on classics piece of apron bottom, and change the piece and rotate with the casing through the fixed axle and be connected. The utility model discloses can reduce external disturbance and noise and cause the influence to bee calling organ, and can gather together the sound wave energy of sound, reduce the loss of sound wave, make the sound energy that bee calling organ produced stronger, it is comparatively convenient that bee calling organ wholly dismantles the installation simultaneously.

Description

Noise-reduction anti-interference piezoelectric buzzer

Technical Field

The utility model relates to a piezoelectric buzzer technical field especially relates to an anti-interference piezoelectric buzzer of making an uproar falls.

Background

The piezoelectric buzzer is a sounding body using piezoelectric ceramic as an electroacoustic transducer, and the core of the device is a transduction piece which is formed by sticking a piezoelectric ceramic sheet on a metal sheet, namely a piezoelectric buzzer sheet.

The stability of prior art's piezoelectricity bee calling organ can receive certain influence under some special environment and the strong condition of vibrations, does not have corresponding public address processing of making an uproar of falling in the bee calling organ simultaneously, and the sound transmission can be adulterated the noise, has reduced buzzing definition, influences the use.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the stability of the piezoelectric buzzer among the prior art under some special environment and the strong condition of vibrations bee calling organ and can receive certain influence, do not have corresponding public address processing of making an uproar of falling in the bee calling organ simultaneously, the sound transmission can be adulterated the noise, has reduced buzzing definition, influences the problem of using, and the anti-interference piezoelectric buzzer of making an uproar falls that provides.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides an anti-interference piezoelectric buzzer of making an uproar falls, includes the casing and sets up PCB board and the piezoelectric patches in the casing, the outer wall of casing has cup jointed the shielding shell, the top of piezoelectric patches is equipped with and draws in sound annular cover, and draws in a plurality of public address diaphragms of the inner wall symmetry fixedly connected with of sound annular cover, and is a plurality of public address diaphragm semicircle arc type sets up, draw in the outer wall of sound annular cover and fix and cup joint the puigging of making an uproar that falls, casing open-ended one side is equipped with the apron, and the top of apron has seted up the sound outlet, the one end fixedly connected with of apron bottom changes the piece, and changes the piece and rotate with the casing through the fixed axle and be connected, the other end fixedly connected with L type elasticity of apron bottom is buckled, the outer wall of casing is seted up and is buckled assorted draw-in groove with L type elasticity.

Preferably, the fixed shaft is movably sleeved with a torsion spring, and two ends of the torsion spring are respectively fixedly connected with the side wall of the shell and the side wall of the rotating block.

Preferably, be equipped with dustproof filter screen in the sound outlet, and dustproof filter screen and apron fixed connection set up.

Preferably, the outer wall of the sound gathering annular cover is symmetrically and fixedly connected with a plurality of positioning blocks, and the side wall of one side of the opening of the shell is provided with a plurality of positioning through grooves matched with the positioning blocks.

Preferably, the PCB is electrically connected with two pins, and one ends of the two pins penetrate through the inner wall of the housing and extend outwards.

Preferably, a protective gasket is arranged between the sound collecting annular cover and the piezoelectric sheet, and the protective gasket is abutted against the piezoelectric sheet and the sound collecting annular cover.

Compared with the prior art, the utility model provides an anti-interference piezoelectric buzzer of making an uproar falls possesses following beneficial effect:

1. this anti-interference piezoelectric buzzer of making an uproar falls, through the shielding shell that is equipped with, draw in sound annular cover, public address diaphragm and fall the puigging of making an uproar, can reduce external disturbance and noise and cause the influence to buzzer, and can gather together the sound wave energy of sound, reduce the loss of sound wave, make the sound energy that buzzer produced stronger.

2. This anti-interference piezoelectric buzzer of making an uproar falls, apron, commentaries on classics piece, fixed axle and the elasticity of L type that is equipped with are buckled, can be convenient for install fast and dismantle buzzer wholly, the people's of being convenient for use.

The part that does not relate to among the device all is the same with prior art or can adopt prior art to realize, the utility model discloses can reduce external disturbance and noise and cause the influence to bee calling organ, and can gather together the sound wave energy of sound, reduce the loss of sound wave, make the sound energy that bee calling organ produced stronger, it is comparatively convenient that bee calling organ wholly dismantles the installation simultaneously.

Drawings

Fig. 1 is a schematic structural view of a noise-reducing and anti-interference piezoelectric buzzer provided by the present invention;

fig. 2 is an enlarged view of a portion a of fig. 1.

In the figure: the device comprises a shell 1, a PCB 2, a sound gathering annular cover 3, a sound amplifying diaphragm 4, a noise reduction and sound insulation layer 5, a cover plate 6, a rotating block 7, a fixing shaft 8, a 9L-shaped elastic buckle, a torsion spring 10, a dust-proof filter screen 11, a positioning block 12, pins 13, a protective gasket 14, a piezoelectric sheet 15 and a shielding shell 16.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

Referring to fig. 1-2, an anti-interference piezoelectric buzzer of making an uproar falls, including casing 1 and setting up PCB 2 and piezoelectric patches 15 in casing 1, the outer wall of casing 1 has cup jointed shielding shell 16, the top of piezoelectric patches 15 is equipped with and collects in sound annular cover 3, and collect in the inner wall symmetry fixedly connected with a plurality of public address diaphragms 4 of sound annular cover 3, a plurality of public address diaphragms 4 semicircle type settings, collect in the outer wall of sound annular cover 3 and fixedly cup joint and fall the puigging 5 of making an uproar, casing 1 open-ended one side is equipped with apron 6, and the top of apron 6 has seted up the sound outlet, the one end fixedly connected with of apron 6 bottom turns round piece 7, and turn piece 7 rotates with casing 1 through fixed axle 8 and is connected, the other end fixedly connected with L type elasticity of apron 6 bottom is buckled 9, casing 1's outer wall has seted up and has detained 9 assorted draw-in groove with L type elasticity.

The fixed shaft 8 is movably sleeved with a torsion spring 10, and two ends of the torsion spring 10 are respectively fixedly connected with the side wall of the shell 1 and the side wall of the rotating block 7, so that the cover plate 6 and the rotating block 7 can be driven to rotate.

A dustproof filter screen 11 is arranged in the sound outlet, and the dustproof filter screen 11 is fixedly connected with the cover plate 6, so that external foreign matters can be placed into the sound gathering annular cover 3.

The outer wall of the sound gathering annular cover 3 is symmetrically and fixedly connected with a plurality of positioning blocks 12, the side wall of one side of the opening of the shell 1 is provided with a plurality of positioning through grooves matched with the positioning blocks 12, and the stability of the sound gathering annular cover 3 placed inside the shell 1 is improved.

PCB board 2 electric connection has two pins 13, and the one end of two pins 13 all runs through the inner wall of casing 1 and outwards extends, through the pin 13 that is equipped with, can be convenient for PCB board 2 and external power source be connected.

A protective pad 14 is arranged between the sound collecting annular cover 3 and the piezoelectric sheet 15, and the protective pad 14 is arranged against the piezoelectric sheet 15 and the sound collecting annular cover 3, so that a protective effect can be achieved.

In the utility model, when in use, the piezoelectric sheet 15 can make sound through the PCB 2 and the piezoelectric sheet 15, the sound enters into the sound gathering annular cover 3 to gather together, the sound reflection transmission can form resonance through the sound amplifying diaphragm 4, the energy level of the sound is improved, the loss of the sound wave is reduced, the external electromagnetic interference can be reduced through the shielding shell 16, the external sound noise interference can be reduced through the noise reduction and sound insulation layer 5, the sound energy generated by the buzzer is stronger, the L-shaped elastic buckle 9 is pulled to separate from the clamping groove, the torsion spring 10 is arranged, when the L-shaped elastic buckle 9 is separated, the torsion of the torsion spring 10 can drive the rotary block 7 and the cover plate 6 to rotate around the fixed shaft 8, the opening of the shell 1 is opened, the internal parts can be checked conveniently, is convenient for people to maintain and install.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. The utility model provides a noise reduction anti-interference piezoelectric buzzer, includes casing (1) and sets up PCB board (2) and piezoelectric patches (15) in casing (1), its characterized in that, the outer wall of casing (1) has cup jointed shielding shell (16), the top of piezoelectric patches (15) is equipped with and draws in sound annular cover (3), and draws in the inner wall symmetry fixedly connected with a plurality of public address diaphragms (4) of sound annular cover (3), a plurality of public address diaphragms (4) semicircle type setting, draw in the fixed noise reduction puigging (5) that has cup jointed of the outer wall of sound annular cover (3), casing (1) open-ended one side is equipped with apron (6), and the top of apron (6) has seted up out the sound mouth, the one end fixedly connected with commentaries on classics piece (7) of apron (6) bottom, and commentaries on classics piece (7) are connected with casing (1) through fixed axle (8) rotation, the other end fixedly connected with L type elasticity of apron (6) bottom is buckled (9), the outer wall of the shell (1) is provided with a clamping groove matched with the L-shaped elastic buckle (9).

2. The noise-reducing and interference-resisting piezoelectric buzzer according to claim 1, wherein the fixed shaft (8) is movably sleeved with a torsion spring (10), and two ends of the torsion spring (10) are respectively fixedly connected with the side wall of the housing (1) and the side wall of the rotating block (7).

3. The piezoelectric buzzer with noise reduction and interference resistance as claimed in claim 1, wherein a dustproof filter screen (11) is arranged in the sound outlet, and the dustproof filter screen (11) is fixedly connected with the cover plate (6).

4. The noise-reducing and interference-resisting piezoelectric buzzer according to claim 1, wherein a plurality of positioning blocks (12) are symmetrically and fixedly connected to the outer wall of the gathering ring-shaped cover (3), and a plurality of positioning through grooves matched with the positioning blocks (12) are formed in the side wall of the opening side of the casing (1).

5. The noise-reducing and interference-resisting piezoelectric buzzer according to claim 1, wherein the PCB board (2) is electrically connected with two pins (13), and one end of each of the two pins (13) penetrates through an inner wall of the housing (1) and extends outwards.

6. A noise-reducing and interference-resisting piezoelectric buzzer according to claim 1, wherein a protective spacer (14) is provided between the collecting ring cover (3) and the piezoelectric sheet (15), and the protective spacer (14) is provided in abutment with the piezoelectric sheet (15) and the collecting ring cover (3).