CN-224233524-U - Linear vibration motor

CN224233524UCN 224233524 UCN224233524 UCN 224233524UCN-224233524-U

Abstract

The utility model relates to the technical field of vibration motors and discloses a linear vibration motor which comprises a shell and a cover body, wherein the shell and the cover body are buckled to form a containing space, the shell and the cover body are cylinders with one end open, the shell comprises a circular first bottom, a first side wall and a first notch arranged at the free end of the first side wall, the cover body comprises a circular second bottom, a second side wall formed by bending and extending the periphery of the second bottom, and a supporting part extending in parallel from the second bottom and extending out of the containing space, an arc-shaped bending part is arranged between the second bottom and the second side wall, the second side wall is provided with a second notch corresponding to the first notch, the outer wall surface of the second side wall is in tight fit with the inner wall surface of the first side wall, the second side wall is positioned in the containing space, and a first sealant part is coated in a gap between the first side wall and the bending part. The linear vibration motor has high structural stability, good sealing performance and good vibration performance.

Inventors

ZHANG JUNYI
Wang Foyun
LI ZHIJIAN
TANG QI
ZHU QUNXIN

Assignees

四川安和精密电子电器股份有限公司

Dates

Publication Date: 20260512
Application Date: 20250425

Claims (7)

1. A linear vibration motor comprises a shell and a cover body, wherein the shell and the cover body are buckled to form a containing space, the linear vibration motor is characterized in that the shell and the cover body are cylinders with one ends being opened, the shell comprises a circular first bottom, a first side wall and a first notch arranged at the free end of the first side wall, the cover body comprises a circular second bottom, a second side wall formed by bending and extending the periphery of the second bottom and a supporting part extending in parallel from the second bottom and extending out of the containing space, an arc-shaped bending part between the second bottom and the second side wall is provided with a second notch corresponding to the first notch, the outer wall surface of the second side wall is tightly matched with the inner wall surface of the first side wall, the second side wall is positioned in the containing space, and a first sealant part is coated in a gap between the first side wall and the bending part.
2. The linear vibration motor of claim 1, wherein the first side wall is perpendicular to the first bottom, the second side wall is perpendicular to the second bottom, and the free end surface of the first side wall is flush with the outer surface of the second bottom.
3. The linear vibration motor of claim 1, further comprising a stator assembly comprising a flexible circuit board and a coil, the flexible circuit board comprising an inner electrical terminal and an outer electrical terminal.
4. A linear vibration motor according to claim 3, wherein the sum of the heights of the first and second notches is equal to the thickness of the flexible circuit board.
5. The linear vibration motor of claim 4, wherein the inner terminal is fixed to an inner surface of the second bottom portion, and the outer terminal is extended from the first and second notches and fixed to the supporting portion.
6. The linear vibration motor of claim 5, wherein an area of the support portion is larger than an area of the external power receiving terminal.
7. The vibration motor of claim 6, wherein the positions of the first notch, the second notch, the external power connection terminal, and the support portion fully cover the second sealant portion.

Description

Linear vibration motor Technical Field The utility model relates to the technical field of linear vibration motors, in particular to a linear vibration motor. Background With the development of electronic technology, portable consumer electronic products have gradually occupied global consumer markets, such as mobile phones, palm game machines, multimedia entertainment devices and the like, call-in silent prompts or haptic feedback, users are required to be reminded by vibration of a machine body, and a part for generating vibration is a built-in miniature linear vibration motor, so that if the requirements of miniaturization and vibration performance of the linear vibration motor are higher and higher. The service life of the traditional linear vibration motor can be shortened sharply under the high-temperature and high-humidity environment, and the vibration performance can be slipped down under the sine signals of rated voltage and resonance frequency. Tests prove that the service life of the vibration motor is not affected in a pure high-temperature environment (basically the same as the test result in a normal-temperature and normal-humidity environment), and the service life of the spring in the motor is shortened sharply due to the fact that the spring part in the motor is corroded in the high-humidity environment. Therefore, a linear vibration motor having good sealing performance and high vibration performance is needed to solve the technical problems of the conventional linear vibration motor. Disclosure of Invention The utility model aims to provide a linear vibration motor with simple structure and good sealing performance, which has the following specific technical scheme: a linear vibration motor comprises a shell and a cover body, wherein the shell and the cover body are buckled to form a containing space, the shell and the cover body are cylinders with one ends being opened, the shell comprises a circular first bottom, a first side wall and a first notch arranged at the free end of the first side wall, the cover body comprises a circular second bottom, a second side wall formed by bending and extending the periphery of the second bottom, a supporting part extending in parallel from the second bottom and supporting the containing space, an arc-shaped bending part between the second bottom and the second side wall is arranged, the second side wall is provided with a second notch corresponding to the first notch, the outer wall surface of the second side wall is in close fit with the inner wall surface of the first side wall, the second side wall is positioned in the containing space, and a first sealant part is coated in a gap between the first side wall and the bending part. Preferably, the first side wall is perpendicular to the first bottom, the second side wall is perpendicular to the second bottom, and the free end face of the first side wall is flush with the outer surface of the second bottom. Preferably, the stator assembly further comprises a flexible circuit board and a coil, wherein the flexible circuit board comprises an inner electric connection end and an outer electric connection end. Preferably, the sum of the heights of the first notch and the second notch is equal to the thickness of the flexible circuit board. Preferably, the inner terminal is fixed to the inner surface of the second bottom, and the outer terminal is extended from the first notch and the second notch and fixed to the supporting part. Preferably, the area of the supporting part is larger than the area of the external power receiving terminal. Preferably, the positions of the first notch, the second notch, the external power connection end and the supporting portion fully cover the second sealant portion. Compared with the prior art, the utility model provides the linear vibration motor with simple structure, the first side wall of the linear vibration motor shell is overlapped with the second side wall of the cover body, so that the welding stability of the shell and the cover body is ensured, and the first sealant part is coated between the first side wall and the periphery of the second bottom, so that the sealant amount can be increased, the sealant can be prevented from overflowing, and the vibration performance of the linear vibration motor is improved. Drawings Fig. 1 is an exploded view of a housing, a cover, a flexible circuit board and a sealant according to the present utility model. Fig. 2 is a cross-sectional view of a linear vibration motor of the present utility model. The device comprises a 1-shell, a 10-first bottom, a 11-first side wall, a 12-first notch, a 2-cover, a 20-second bottom, a 21-second side wall, a 22-second notch, a 23-supporting part, a 24-bending part, a 30-flexible circuit board, a 31-coil, a 40-mass block, a 41-pole piece, a 42-magnet, a 43-damping piece, a 5-elastic piece, a 6-first sealant part and a 6' -second sealant part. Detailed Description The following description of