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A linear vibrating motor

A linear vibration and motor technology, applied in the direction of electromechanical devices, electrical components, etc., can solve the problem of easy occurrence of polarization, and achieve the effect of preventing polarization, stable product performance, and increasing the gap.

Active Publication Date: 2019-06-28
GOERTEK INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In view of the above problems, the present invention provides a linear vibration motor to solve the problem that the Z-axis linear vibration motor in the prior art is prone to polarization

Method used

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  • A linear vibrating motor
  • A linear vibrating motor
  • A linear vibrating motor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] like figure 1 As shown, the embodiment of the present invention provides a linear vibration motor, including a housing, a mass 3 , a shrapnel 4 , a washer 2 , a magnet 5 , a coil 6 , and an FPCB 7 . The casing includes an upper casing 1 and a lower casing 8 . Wherein, the shrapnel 4 connects the mass block 3 and the shell, and there are at least two sets of shrapnel 4, which are respectively arranged on symmetrical sides of the mass block 3. The shrapnel 4 provides elastic force in the Z-axis direction, and the mass block 3 moves up and down along the Z-axis direction.

[0042] like figure 2 As shown, the shrapnel 4 can be arranged in two groups, symmetrically arranged on both sides of the mass block 3 . The shrapnel 4 is V-shaped, and each group is provided with 2 shrapnels 4, totally 4 shrapnels. Two of the shrapnels are arranged below the mass block 3 , and the other two shrapnels are arranged above the mass block 3 . The two shrapnels arranged below the mass bl...

Embodiment 2

[0050] In the embodiment of the present invention, the elastic sheet 4 is an inclined leaf spring. Such as Figure 8 , Figure 9 As shown, the shrapnel 4 can be set in two groups, and each group is set with 2 shrapnels, a total of 4 shrapnels. Two of the shrapnels are arranged below the mass block 3 , and the other two shrapnels are arranged above the mass block 3 . The inclined plate reed is provided with a vibrating arm, and the two free ends of the vibrating arm are provided with welding planes 41 , which are respectively welded and fixed on the mass block 3 and the shell through the welding planes 41 . The two shrapnels arranged below the mass block 3 are connected to the mass block 3 and the lower case 8 respectively, and the two elastic sheets arranged above the mass block 3 are respectively connected to the mass block 3 and the upper case 1 . A support plate 31 can be arranged on the side of the mass block 3 , and one free end of the shrapnel 4 is welded and fixed on...

Embodiment 3

[0055] Such as Figure 10 , Figure 11 Shown is the third embodiment of the present invention. In this embodiment, the springs 4 are inclined leaf springs, and two springs are arranged in each group, totaling four springs. The inclined plate reed is provided with a vibrating arm, and the two free ends of the vibrating arm are provided with welding planes 41, which are respectively welded and fixed on the mass block 3 and the upper shell 1 through the welding planes 41. The difference from the second embodiment is that, In this embodiment, the welding planes 41 are distributed vertically.

[0056] Such as Figure 10 , Figure 11 As shown, a support plate 31 is provided on the side of the mass block 3 , one welding plane 41 of the elastic piece 4 is connected and fixed on the side of the support plate 31 , and the other welding plane 41 is connected and fixed on the upper shell 1 .

[0057] This embodiment provides another structural solution for the inclined plate spring ty...

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Abstract

The invention discloses a linear vibrating motor. Elastic sheets are symmetrically arranged on the two sides or four sides of a mass block; the elastic sheets are V-shaped or inclined plate spring sheets; welding planes are arranged at the free ends of the elastic sheets; the elastic sheets are fixed on the mass block and the shell through the welding planes separately; and the elastic sheets provide elastic force in the Z-axis direction, so that the mass block can move up and down in the Z-axis direction. By adoption of the structure, the difference between the first-order vibrating frequency and the second-order vibrating frequency of the vibrating system can be effectively increased, so that the generation of polarization can be effectively prevented.

Description

technical field [0001] The invention relates to a linear vibration motor, in particular to a shrapnel of a linear vibration motor. Background technique [0002] The Z-axis linear vibration motor in the prior art includes an upper shell and a lower shell. The sealed space composed of the upper shell and the lower shell contains a vibration system, an FPCB, and a coil. The vibration system is composed of a helical shrapnel, a permanent magnet, and a mass block. The bottom end of the shrapnel with a larger diameter is fixed on the shell, and the mass block is fixedly connected with the top end of the helical shrapnel with a smaller diameter. Under the magnetic force of the coil and the permanent magnet, the permanent magnet drives the mass block to move up and down along the Z axis, and the helical shrapnel simultaneously Perform repeated stretching and compressing movements. [0003] In the common Z-axis linear vibration motor structure, the bottom end of the helical shrapnel...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02K33/02
CPCH02K33/02
Inventor 石华孙洪超
Owner GOERTEK INC