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A linear vibration motor

A technology of linear vibration and casing, applied in electrical components, electromechanical devices, etc., can solve the problems of high cost, poor vibration sense, complex structure, etc., and achieve the effect of low cost, strong vibration sense, and small size

Active Publication Date: 2018-03-20
ZHEJIANG DONGYANG CHENGJI ELECTRO MECHANICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The present invention provides a linear vibration motor with compact structure, small volume, low cost and strong vibration in order to solve the problem of high manufacturing cost or poor vibration sensitivity of linear vibration motors or complex structures in the prior art

Method used

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  • A linear vibration motor
  • A linear vibration motor
  • A linear vibration motor

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Embodiment 1: as figure 1 A linear vibrating motor shown includes a casing, the casing is formed by connecting an upper casing 1 and a lower casing 2, and the inner bottom of the lower casing 2 is provided with an FPC circuit board 3, and a pin of the FPC circuit board 3 Out of the lower case 2, the center of the bottom surface of the lower case 2 is provided with a coil 4 connected to the FPC circuit board 3, and a magnetic frame 5 is provided directly above the coil, the opening of the magnetic frame 5 faces downward, and the axis of the magnetic frame is in line with the The axis of the coil is coaxial, and the inside of the magnetic frame is provided with a magnetic steel 6. An annular cavity 7 is formed between the magnetic steel and the inner wall of the magnetic frame. The upper end of the coil is located in the annular cavity 7. A coil spring 9 is arranged between the block and the lower casing, the upper end surface of the mass block 8 is coplanar with the uppe...

Embodiment 2

[0022] Embodiment 2: as figure 2 As shown, the edge of the mass block 8 is provided with a plurality of diversion grooves 11 running through the upper and lower ends of the mass block along the circumference, and a number of exhaust holes 12 are provided in the center of the bottom surface of the lower case 2, and the outer bottom of the lower case is provided with a completely covered exhaust port. The dustproof cloth 13 of hole; The outer side of upper housing 1 is provided with cover plate 14, and the lower side edge of cover plate 14 is provided with connecting ring 140, is threadedly connected between connecting ring and upper housing, and the lower side center of cover plate is provided with There is a concave cavity 15, the center of the upper housing is provided with a central hole 16 communicating with the concave cavity, and the inner side of the cover plate 14 is provided with a number of radially distributed grooves 17, the inner ends of the grooves 17 communicate ...

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Abstract

The invention relates to the technical field of motors, and discloses a linear vibration motor. The linear vibration motor comprises a case, wherein the case is formed by connecting an upper shell and a lower shell; an FPC circuit board is arranged at the internal bottom part of the lower shell; a pin of the FPC circuit extends out of the lower shell; a coil connected with the FPC circuit board is arranged at the center of the bottom surface of the lower shell; a magnetic frame is arranged above the coil; an opening of the magnetic frame is downward; the axis of the magnetic frame and the axis of the coil are coaxial; magnetic steel is arranged in the magnetic frame; a ring cavity is formed between the magnetic steel and the inner wall of the magnetic frame; the upper end of the coil is located in the ring cavity; a mass block is arranged at the outer side of the magnetic steel; a coil spring is arranged between the mass block and the lower shell; the upper end surface of the mass block and the upper end surface of the magnetic frame are coplanar; and an avoiding gap is formed between the upper end surface of the mass block and the lower side surface of the upper shell. The linear vibration motor has the beneficial effects of being compact in structure, small in volume, low in cost and high in vibration level.

Description

technical field [0001] The invention relates to the technical field of motors, in particular to a linear vibration motor. Background technique [0002] Vibration motors are also called vibration motors. Vibration motors are indispensable electronic components for mobile phones, tablet computers, electronic toys and other electronic products, which provide users with tactile feedback. With the intensification of competition in the smartphone market, mobile phone manufacturers are paying more and more attention to the user's tactile experience. Linear vibration motors with various structures have appeared on the market. Compared with traditional rotor motors, linear motors have better vibration characteristics, response time, and use It has great advantages in life, noise, etc., and it can provide a variety of vibration modes, providing users with rich and varied and delicate and realistic tactile feedback. At present, the internal structure of vibrating linear motors is very...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02K33/02
CPCH02K33/02
Inventor 周仕
Owner ZHEJIANG DONGYANG CHENGJI ELECTRO MECHANICS CO LTD