CN-224232348-U - Buzzer structure

CN224232348UCN 224232348 UCN224232348 UCN 224232348UCN-224232348-U

Abstract

The utility model relates to a buzzer structure which comprises a shell, a connecting piece, a piezoelectric ceramic piece and a rear cover, wherein a cavity is formed in the shell, a first positioning clamping groove is formed in the inner wall of the shell, the side edge of the connecting piece is arranged in the first positioning clamping groove, a PIN needle is connected to the connecting piece, the PIN needle extends out of the shell, the piezoelectric ceramic piece is positioned in the cavity of the shell, a spring is connected to the piezoelectric ceramic piece, the other end of the spring, which is far away from the piezoelectric ceramic piece, is connected with the connecting piece, the rear cover is clamped with the shell, and the rear cover covers the cavity of the shell. According to the buzzer structure, on the premise that the forming of the rear cover and the sounding of the buzzer are not affected, the rear cover and the plastic shell are assembled with the connecting sheet and the piezoelectric ceramic sheet respectively through the clamping diseases, so that the effect of fixing the position is achieved, the gluing process of the piezoelectric ceramic sheet is omitted, the convenience of product assembly is improved, and the manufacturing process steps and cost of the buzzer are further reduced.

Inventors

HUANG JIE
JIN XUEGUI
LI DINGWEI

Assignees

苏州百丰电子有限公司

Dates

Publication Date: 20260512
Application Date: 20250116

Claims (10)

1. A buzzer structure, characterized by comprising: The shell is internally provided with a cavity, and the inner wall of the shell is provided with a first positioning clamping groove; The side edge of the connecting sheet is arranged in the first positioning clamping groove, the connecting sheet is connected with a PIN needle, and the PIN needle extends out of the shell; The piezoelectric ceramic piece is positioned in the cavity of the shell, a spring is connected to the piezoelectric ceramic piece, and the other end of the spring, which is far away from the piezoelectric ceramic piece, is connected with the connecting piece; and the rear cover is clamped with the shell, and covers the cavity of the shell.
2. The buzzer structure of claim 1, wherein a second positioning slot is provided in the bottom surface of the housing interior, the second positioning slot being configured to define the position of the piezoelectric ceramic sheet.
3. The buzzer structure of claim 1 or 2, wherein the cross section of the casing is circular, a circular groove is formed in one end of the casing inwards, a first protrusion is arranged on the inner circumferential wall of the circular groove, the cross section of the rear cover is circular, a second protrusion is arranged on the outer circumferential wall of the rear cover, and the first protrusion and the second protrusion are clamped to fix the rear cover to the casing.
4. The buzzer structure of claim 3, wherein the inner wall of the circular groove is provided with a boss, and the end face of the rear cover is contacted with the boss.
5. The buzzer structure of claim 3, wherein two symmetrically disposed mounting bosses are disposed within the housing, the two symmetrically disposed mounting bosses being located on a same diameter of the housing, and the first detent is disposed on opposite sides of the mounting bosses.
6. The buzzer structure of claim 5, wherein the connecting piece is located between two symmetrically arranged mounting protrusions, and two ends of the connecting piece, which are close to the mounting protrusions, are provided with clamping protrusions, and the clamping protrusions are arranged in the first positioning clamping grooves.
7. The buzzer structure of claim 6, wherein the first positioning detent is an arcuate slot and the cross section of the detent projection is hemispherical.
8. The buzzer structure of claim 2, wherein the center of the second positioning slot is provided with a positioning convex part, the positioning convex part is a round table, the center of the piezoelectric ceramic plate is provided with a circular through hole, and the positioning convex part is arranged in the circular through hole.
9. The buzzer structure of claim 2, wherein the second positioning slot has a circular cross section, the piezoelectric ceramic plate is a circular thin sheet, the diameter of the piezoelectric ceramic plate is smaller than that of the second positioning slot, the connecting piece is a rectangular body, and the connecting piece is located in the radial direction of the piezoelectric ceramic plate.
10. The buzzer structure of claim 9, wherein the number of the springs is two, and the two springs are respectively positioned at two ends of the center of the piezoelectric ceramic wafer.

Description

Buzzer structure Technical Field The utility model relates to the technical field of buzzers, in particular to a buzzer structure. Background As is well known, a buzzer is an electronic buzzer with an integrated structure, is powered by direct-current voltage, and is widely applied to electronic products such as computers, printers, copiers, alarms, electronic toys, automobile electronic equipment, telephones, timers and the like as sound-producing devices, and the buzzer is mainly divided into two types of piezoelectric type buzzers and electromagnetic type buzzers, wherein the existing buzzers consist of plastic shells, connecting sheets, springs, rear covers and piezoelectric ceramic sheets. Along with the price trend of various electronic products, the control requirement on the cost of the electronic products is higher and higher, and because of the structural limitation of the traditional piezoelectric buzzer parts at present, the conventional piezoelectric beepers all adopt the assembly process of gluing a piezoelectric ceramic piece and a shell, the process steps are complicated, so that the cost of the products is difficult to reduce, and meanwhile, the glue gluing assembly process also brings difficulty to subsequent maintenance difficulty. Disclosure of utility model Therefore, the utility model aims to solve the technical problems that the prior buzzer structure is assembled by adopting a gluing process in the prior art, so that more process steps are caused, the assembly efficiency is low, and the production cost is increased. The utility model provides a buzzer structure, which aims to solve the technical problems, and comprises a shell, a connecting sheet, a piezoelectric ceramic sheet, a rear cover and a rear cover, wherein a cavity is formed in the shell, a first positioning clamping groove is formed in the inner wall of the shell, the side edge of the connecting sheet is arranged in the first positioning clamping groove, a PIN needle is connected to the connecting sheet, the PIN needle extends out of the shell, the piezoelectric ceramic sheet is positioned in the cavity of the shell, a spring is connected to the piezoelectric ceramic sheet, the other end of the spring, which is far away from the piezoelectric ceramic sheet, is connected with the connecting sheet, the rear cover is clamped with the shell, and the rear cover covers the cavity of the shell. In one embodiment of the utility model, a second positioning slot is arranged on the bottom surface of the inner part of the shell, and the second positioning slot is used for limiting the position of the piezoelectric ceramic plate. In one embodiment of the utility model, the cross section of the shell is circular, one end of the shell is provided with a circular groove inwards, the circumferential inner wall of the circular groove is provided with a first convex part, the cross section of the rear cover is circular, the circumferential outer wall of the rear cover is provided with a second convex part, and the first convex part and the second convex part are clamped to realize the fixation of the rear cover to the shell. In one embodiment of the utility model, a boss is arranged on the inner wall of the circular groove, and the end face of the rear cover is contacted with the boss. In one embodiment of the utility model, two symmetrically arranged mounting protrusions are arranged in the shell, the two symmetrically arranged mounting protrusions are positioned on the same diameter of the shell, and the first positioning clamping grooves are arranged on opposite faces of the mounting protrusions. In one embodiment of the utility model, the connecting piece is located between two symmetrically arranged mounting convex parts, and two ends of the connecting piece, which are close to the mounting convex parts, are provided with clamping convex parts, and the clamping convex parts are arranged in the first positioning clamping grooves. In one embodiment of the present utility model, the first positioning slot is an arc slot, and the cross section of the clamping convex part is hemispherical. In one embodiment of the present utility model, a positioning protrusion is disposed at the center of the second positioning slot, the positioning protrusion is a truncated cone, a circular through hole is disposed at the center of the piezoelectric ceramic plate, and the positioning protrusion is disposed in the circular through hole. In one embodiment of the present utility model, the section of the second positioning slot is circular, the piezoelectric ceramic plate is a circular thin plate, the diameter of the piezoelectric ceramic plate is smaller than that of the second positioning slot, the connecting piece is a rectangular body, and the connecting piece is located in the radial direction of the piezoelectric ceramic plate. In one embodiment of the utility model, the number of the springs is two, and the two springs are respectively positioned at tw