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Linear Vibration Motor

A technology of linear vibration and vibration direction, applied in the direction of electromechanical devices, electrical components, etc., can solve the problems of low BL value and small magnetic field in the magnetic circuit, and achieve the effects of reducing magnetic flux leakage, increasing magnetic field strength, and increasing magnetic field strength

Inactive Publication Date: 2018-09-21
AAC TECH PTE LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the magnetic field in the magnetic gap of this magnetic circuit system is small, and the BL value of the magnetic circuit is low

Method used

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  • Linear Vibration Motor
  • Linear Vibration Motor
  • Linear Vibration Motor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Please refer to figure 1 , figure 2 , image 3 and Figure 4 ,in, figure 1 An exploded view of the three-dimensional structure of the linear vibration motor provided by the present invention, figure 2 for figure 1 The schematic diagram of the assembled structure of the linear vibration motor shown, image 3 for figure 2 The sectional view of the shown linear vibration motor along the direction A-A, Figure 4 for figure 2 The cross-sectional view of the linear vibration motor shown along the B-B direction. The present invention provides a linear vibration motor 100, which includes a housing 1 with a housing space, a magnetic circuit system 3 and a vibrator system 5 fixed in the housing 1, and the magnetic circuit system 3 drives the vibrator system 5 Vibrates along the Z-Z direction.

[0028] The casing 1 is made of soft magnetic material, and includes a casing 11 and a cover 13 assembled with the casing 11 to form a receiving space.

[0029] The housing 1...

Embodiment 2

[0042] see Figure 5 , is a cross-sectional view of Embodiment 2 of the linear vibration motor provided by the present invention. The difference between the second embodiment and the first embodiment is that the secondary magnetic circuit system 33 ′ of the linear vibration motor 200 further includes a fourth magnetic steel 333 ′ attached to the third magnetic steel 331 ′ along the Z-Z direction. The fourth magnetic steel 333' is magnetized along the Z-Z direction, and the polarity of the magnetic pole of the fourth magnetic steel 333' close to the third magnetic steel 331' is the same as that of the first magnetic steel 311'. The polarity of the magnetic poles of the core 313' is reversed. Specifically, when the opposite arrangement of the same poles of the first magnet 311' and the second magnet 315' is N-S-S-N, the N pole of the fourth magnet 333' is attached to the The third magnetic steel 331'; when the same polarity relative arrangement of the first magnetic steel 311'...

Embodiment 3

[0047] see Figure 6 , is a cross-sectional view of the third embodiment of the linear vibration motor provided by the present invention. The difference between the third embodiment and the second embodiment is that the secondary magnetic circuit system 33″ of the linear vibration motor 300 also includes The fifth magnet is 335″. The fifth magnetic steel 335 ″ is magnetized along the Z-Z direction, and the fifth magnetic steel 335 ″ and the fourth magnetic steel 333 ″ are oppositely arranged with the same pole.

[0048] In this embodiment, the fifth magnet 335″ is the same magnet as the fourth magnet 333″, and the fourth magnet 333″ is away from the fifth magnet 335″. The surface of the fifth magnetic steel 335 ″ is attached to the bottom of the housing 11 ″, and the surface of the fifth magnetic steel 335 ″ away from the fourth magnetic steel 333 ″ is attached to the cover 13 ″.

[0049] Compared with Embodiment 2, in Embodiment 3, the two third magnetic steels 331″ are ar...

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Abstract

The invention provides a linear vibration motor, which comprises a magnetic circuit system and an oscillator system, wherein the magnetic circuit system comprises a main magnetic circuit system and two secondary magnetic circuit systems; the main magnetic circuit system comprises first magnetic steel, a pole shank and second magnetic steel which are sequentially stacked along the vibration direction of the oscillator system; the first magnetic steel and the second magnetic steel are arranged in a homopolar opposite manner; each secondary magnetic circuit system comprises third magnetic steel; two opposite sides of the pole shank are homopolar opposite; and the polarities of homopolar opposite magnetic poles of the third magnetic steel are opposite to that of the homopolar opposite magnetic pole of the main magnetic circuit system. Compared with a related technology, the linear vibration motor provided by the invention has the advantages that the first magnetic steel and the second magnetic steel are arranged in a homopolar opposite manner and the secondary magnetic circuit systems are arranged at two opposite sides of the main magnetic circuit system, so that the magnetic field intensity of the magnetic circuit system is increased.

Description

【Technical field】 [0001] The invention relates to a vibration motor, in particular to a linear vibration motor with an optimized magnetic circuit. 【Background technique】 [0002] With the development of electronic technology, portable consumer electronic products are becoming more and more popular, such as mobile phones, handheld game consoles, navigation devices or handheld multimedia entertainment equipment, etc. These electronic products generally use vibration motors for system feedback. Such as mobile phone call prompts, information prompts, navigation prompts, vibration feedback of game consoles, etc. Such a wide range of applications requires high performance vibration motors. [0003] The linear vibration motor in the related art includes a housing with a housing space, a magnetic circuit system fixed in the housing space, and a vibrator system driven by the magnetic circuit system. The housing includes a housing and is assembled with the housing to form a The cove...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02K33/02
CPCH02K33/02
Inventor 郭顺毛路斌陈召宪
Owner AAC TECH PTE LTD
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