KR20160031904A

KR20160031904A - Linear vibration motor

Info

Publication number: KR20160031904A
Application number: KR1020140122259A
Authority: KR
Inventors: 김진훈
Original assignee: 주식회사 엠플러스
Priority date: 2014-09-15
Filing date: 2014-09-15
Publication date: 2016-03-23

Abstract

A linear vibration motor according to an embodiment of the present invention includes a stator including a housing having an inner space in which a magnet is disposed, an elastic body disposed in the inner space and moving linearly, a weight provided in the elastic body, A vibration damper including a coil, a first damper provided between the elastic body and the weight, and a second damper provided between the elastic body and the housing. Therefore, the double damping structure in which the damper is disposed inside and outside the elastic body can prevent the touch of the weight and the elastic body occurring at the time of maximum displacement of the elastic body, and reduce the impact amount of the elastic body and the damper to improve high frequency noise .

Description

[0001] LINEAR VIBRATION MOTOR [0002]

The present invention relates to a linear vibration motor.

A vibration motor is a component that converts electrical energy into mechanical vibration by using the principle of generating electromagnetic force, and is usually mounted on a mobile device to generate a silent incoming signal to prevent others from suffering damage due to external sound .

That is, the vibration motor is excited by an electromagnetic force having a resonant frequency determined by using a spring and a vibrator suspended from the spring, instead of using the principle of rotation of the motor to generate vibration.

At this time, the spring has a constant K value, and the resonance frequency Fn of the vibration motor is determined together with the mass m of the vibrator. Further, the spring is formed in a coil shape so as to facilitate the movement of the vibrator, and is usually provided on a stator composed of a case and a bracket. The spring elastically supports the vibrator, .

On the other hand, mobile devices including smart phones are generally adopting a touch screen method, and accordingly, functions for generating vibrations during touch are increasing. Here, the vibrating motor performs a haptic function indicating that the touch is made by touching the touch screen, and as described above, it is used as a silent incoming alarm function.

Therefore, in order to perform such a function, the vibration motor is configured as a linear type, which is disclosed in detail in (Patent Document 1). According to the above-described Patent Document 1, a linear vibration motor includes a vibrator including a yoke and a weight, which is vertically movable, and a magnet and a coil ) Are arranged to constitute a magnetic circuit system, a maximum displacement occurs at a resonance point when a direct current or alternating current having a constant frequency is applied, causing mechanical vibration.

KR 2005-0083528 A

According to an aspect of the present invention, there is provided a linear vibration motor capable of easily reducing a high-frequency noise that can be generated in a linear vibration process, easily mitigating a falling impact and further reducing a residual vibration There is.

Another aspect of the present invention is to provide a linear vibration motor capable of easily reducing a gap between a magnet and a coil which generate linear vibration.

According to an aspect of the present invention, there is provided a linear vibration motor including: a stator including a housing formed with an inner space in which a magnet is disposed; an elastic body disposed in the inner space to move linearly; A first damper provided between the elastic body and the weight, and a second damper provided between the elastic body and the housing. The first damper is disposed between the elastic body and the housing, And a second damper (second damper).

According to another aspect of the present invention, there is provided a linear vibration motor including a stator including a housing having an inner space in which coils are disposed, an elastic body disposed in the inner space and linearly moving, A vibration damper including a magnet disposed opposite to the coil and a weight surrounding the magnet, a first damper disposed between the elastic body and the weight, And a second damper provided between the elastic body and the housing.

According to another aspect of the present invention, there is provided a linear vibration motor comprising: a stator including a housing formed with an inner space in which a magnet is disposed; an elastic body disposed in the inner space and linearly moving; A vibrator including a weight provided on the elastic body and a coil disposed opposite to the magnet and a vibrator fixedly mounted on the housing and facing the coil so as to be in close contact with the periphery of the magnet, And a damper for supporting the damper.

These solutions will become more apparent from the following detailed description taken in conjunction with the accompanying drawings.

Prior to this, terms and words used in the present specification and claims should not be construed in a conventional and dictionary sense, and the inventor should appropriately define the concept of the term in order to describe its invention in the best way possible It must be construed as meaning and concept consistent with the technical idea of the invention on the basis of the principle that it can be done.

1 is a cross-sectional view of a linear vibration motor according to a first embodiment of the present invention;
2 is a cross-sectional view illustrating a linear vibration motor according to a first embodiment of the present invention.
3 is a cross-sectional view illustrating a linear vibration motor according to a second embodiment of the present invention.
4 is a cross-sectional view illustrating a linear vibration motor according to a second embodiment of the present invention.
5 is a cross-sectional view of a linear vibration motor according to a third embodiment of the present invention.
6 is a cross-sectional view of a linear vibration motor according to a fourth embodiment of the present invention.
7 is a cross-sectional view of a linear vibration motor according to a fourth embodiment of the present invention;
8 is a cross-sectional view of a linear vibration motor according to a fifth embodiment of the present invention.
9 is a cross-sectional view of a linear vibration motor according to a fifth embodiment of the present invention.
10 is a sectional view showing a linear vibration motor according to a fifth embodiment of the present invention.
11 is a cross-sectional view of a linear vibration motor according to a fifth embodiment of the present invention.

One embodiment of the present invention will become more apparent from the following description taken in conjunction with the accompanying drawings. It should be noted that, in the present specification, the reference numerals are added to the constituent elements of the drawings, and the same constituent elements are assigned the same number as much as possible even if they are displayed on different drawings. It is also to be understood that the terms "first,"" second, "" one side,"" other, "and the like are used to distinguish one element from another, no. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS In the following description of the present invention, detailed description of known arts which may unnecessarily obscure the gist of the present invention will be omitted.

The linear vibration motor according to an embodiment of the present invention is a dual damping structure in which a damper is disposed on the inside and outside of an elastic body moving linearly so that a weight occurring when a maximum displacement of the elastic body occurs, To prevent the touch of the elastic body and to reduce the amount of impact of the elastic body and the damper, thereby improving the high frequency noise.

That is, under the structure of a general linear vibration motor in which an elastic body as a vibrator is fixedly installed in an internal space of a housing as a stator and linear motion is performed, when the spring as an elastic body reaches the maximum displacement, the spring is pushed by the damper, It is possible to generate a high frequency noise due to the weight and touch caused by the protrusion or the increase in the amount of the impact of the spring and the damper. In addition, the linear vibration motor, which is gradually becoming smaller and thinner, can be easily damaged when dropped.

Therefore, in a linear vibration motor according to an embodiment of the present invention, a damper including rubber or silicone is disposed on the inner side and the outer side of the elastic body which can be applied with such a spring, It is possible to prevent breakage and cracking of the weight body through impact absorption during impact and drop impact, thus ensuring falling reliability. In addition, there is an effect that the ringing which is a phenomenon that the elastic body is shaken by the external force in the state where the linear vibration motor is not used can be reduced.

Meanwhile, the linear vibration motor according to an embodiment of the present invention may include silicon, rubbers, and porons in order to minimize the gap between a coil and a magnet for generating an electromagnetic force for linear vibration. And supports the magnet with a damper.

That is, the linear vibration motor according to an embodiment of the present invention can reduce the air gap between the magnet and the coil by supporting the magnet through the damper, thereby increasing the magnetic flux density, Can be improved.

The increase of the electromagnetic force increases the response speed of the linear vibration motor, increases the weight, increases the weight, thereby improving the vibration power or increasing the excitation force to increase the driving displacement In addition, since the coil comes into contact with the damper which acts as a buffer when the drop impact is applied, it is possible to secure the reliability according to the falling impact, and it is possible to prevent damage due to interference between parts It is possible to effectively prevent the occurrence of disconnection.

Hereinafter, a linear vibration motor according to an embodiment of the present invention will be described with reference to the accompanying drawings.

1 and 2, the linear vibration motor 100 according to the first embodiment of the present invention includes a stator and a vibrator. The magnet 113 is fixed to the inner space 110a, And includes a resilient body 120, a weight 121, and a coil 122 as a vibrator.

The housing 110 includes a case 111 having a fixed plate 111a and a side wall 111b surrounding the fixed plate 111a and having an inner space 110a formed therein to receive the vibrator together with the magnet 113, And a bracket 112 assembled to the case 111 and covering the inner space 110a. The bracket 112 is provided with a circuit board 114 for applying external power to the coil 122.

The magnet 113 may include a first magnet 113a fixed to the bracket 112 so as to be disposed at the center of the inner space 110a and a second magnet 113a disposed to face the first magnet 113a, And a plate yoke 115 is interposed between the first and second magnets 113a and 113b.

The elastic body 120 is formed of a coil spring and one end 120a is fixed to the corner between the fixing plate 111a and the side wall 111b to be accommodated in the inner space 110a of the housing 110. [ And a coil 122 and a weight 121 which are disposed opposite to the magnet 113 at the other end 120b and are electrically connected to the circuit board 114. [ Here, the weight 121 is provided through a yoke 123 interposed between the elastic body 120 and the weight 121.

The linear vibration motor 100 according to the first embodiment of the present invention includes a first damper 130 and a second damper 131 together with a stator and a vibrator. In the case of the first damper 130, And between the elastic body 120 and the housing 110 in the case of the second damper 131. In the case of the second damper 131, That is, the first and second dampers 130 and 131 are disposed inside and outside the elastic body 120.

The first and second dampers 130 and 131 are formed by using a rubber or silicone which is easy to damp and the first damper 130 The elastic member 120 and the weight member 121 are disposed to be as close as possible to the other end 120b of the elastic member 120 so as to effectively prevent the elastic member 120 and the weight member 121 from being touched by the elastic member 120. In the case of the second damper 131, Placement is possible.

That is, the second damper 131 can be disposed close to the one end 120a of the elastic body 120 or close to the other end 120b, which prevents touch between the elastic body 120 and the housing 110 I can do it.

The linear vibration motor 100 according to the first embodiment of the present invention may further include a third damper 132 together with the first and second dampers 130 and 131, 132 are fixed to the bracket 112 so as to surround the magnet 113 irrespective of the installation positions of the first and second dampers 130 and 131 so that the maximum displacement of the elastic body 120, Not only the touch between the coil 122 and the bracket 112 but also the shock transmitted to the coil 122 can be absorbed to effectively prevent disconnection from the circuit board 114.

The third damper 132 is disposed so as to surround the magnet 113. The third damper 132 is fixed to the bracket 112 so as to be in close contact with the periphery of the magnet 113 to support the magnet 113, A guide or an adhesive layer for fixing the adhesive layer may be omitted.

Therefore, according to the linear vibration motor 100 according to the first embodiment of the present invention, the first and second dampers 130 and 131 are disposed on the inner side and the outer side of the elastic body 120, respectively, Since the third damper 132 is disposed between the first coil 132 and the coil 122, it is possible to prevent the generation of touch and high-frequency noise of each structure, and to prevent breakage and cracking during drop impact, Ringing, which is a phenomenon that the elastic body 120 is shaken by an external force in a state where the linear vibration motor 100 is not used, can be effectively reduced.

The air gap between the magnet 113 and the coil 122 can be reduced by the effect of bringing the third damper 132 into close contact with the magnet 113. In this case, The electromagnetic force can be effectively improved.

3 to 4, the linear vibration motor 200 according to the second embodiment of the present invention includes a stator and a vibrator. The stator includes a magnet 213, a housing (not shown) disposed in the inner space 210a 210, and includes the elastic body 220, the weight 221, and the coil 222 as the vibrator.

The housing 210 has a structure in which an inner space 210a is formed so as to receive the vibrator together with the magnet 213. The housing 210 includes a case 211 including a fixed plate 211a and a side wall 211b surrounding the fixed plate 211a And a bracket 212 assembled with the case 211 and covering the inner space 210a. The bracket 212 is provided with a circuit board 214 for applying external power to the coil 222.

The magnet 213 is fixed to the fixing plate 211a of the case 211 so as to be disposed in the center of the inner space 210a and a plate yoke 215 for increasing the magnetic flux is provided at the lower portion in the drawing.

The elastic body 220 is formed of a coil spring and one end 220a is fixed to an edge between the fixing plate 211a and the side wall 211b to be accommodated in the inner space 210a of the housing 210. [ And a coil 222 and a weight 221 electrically connected to the circuit board 214 and disposed opposite to the magnet 213 at the other end 220b. The weight 221 is provided through a yoke 223 which is interposed between the elastic body 220 and the elastic body 220 and between the elastic body 220 and the weight body 221.

Meanwhile, the linear vibration motor 200 according to the second embodiment of the present invention includes a first damper 230 and a second damper 231 together with a stator and a vibrator. In the case of the first damper 230, And between the elastic body 220 and the housing 210 in the case of the second damper 231. The second damper 231 is provided between the elastic body 220 and the housing 210. [ That is, the first and second dampers 230 and 231 are disposed inside and outside the elastic body 220.

The first and second dampers 230 and 231 are commonly formed using rubber or silicon which facilitates damping action. In the case of the first damper 230, The second damper 231 is disposed to be as close as possible to the other end 220b of the elastic body 220 so as to effectively prevent touch between the elastic body 220 and the weight 221. In contrast, Placement is possible.

That is, the second damper 231 can be disposed close to the one end 220a of the elastic body 220 or close to the other end 220b, which prevents the elastic body 220 from touching the housing 210 I can do it.

The linear vibration motor 200 according to the second embodiment of the present invention may further include a third damper 232 together with the first and second dampers 230 and 231, 232 is fixed to the bracket 212 constituting the housing 210 regardless of the installation position of the first and second dampers 230 and 231 so that the maximum displacement of the elastic body 220, Not only the touch of the coil 222 and the bracket 212 but also the shock transmitted to the coil 222 is absorbed to effectively prevent disconnection from the circuit board 214.

Therefore, according to the linear vibration motor 200 according to the second embodiment of the present invention, the first and second dampers 230 and 231 are disposed inside and outside the elastic body 220, respectively, and the housing 210, It is possible to prevent occurrence of touch and high-frequency noise of each structure and to prevent breakage and cracking during a drop impact, thereby ensuring drop reliability. In addition, since the third damper 232 is disposed between the coil 222 and the first damper 232, Ringing, which is a phenomenon in which the elastic body 220 is shaken by an external force in a state where the linear vibration motor 200 is not used, can be effectively reduced.

5, the linear vibration motor 300 according to the third embodiment of the present invention includes a stator and a vibrator. The stator includes a housing 310 in which a coil 322 is disposed in an inner space 310a, And includes the elastic body 320, the weight 321, and the magnet 313 as the vibrator.

The housing 310 has a structure in which an inner space 310a is formed so as to receive the vibrator together with the magnet 313 and includes a case 311 including a fixing plate 311a and a side wall 311b surrounding the fixing plate 311a And a bracket 312 assembled with the case 311 and covering the inner space 310a. The bracket 312 is provided with a circuit board 314 for applying external power to the coil 322.

The coil 322 is inserted into the fixing portion 312a protruding from the bracket 312 and faces the magnet 313. [ A concentric yoke 340 is inserted or press-fitted into the center of the coil 322. That is, the concentric yoke 340 is a metal material that functions as a magnetic body and is installed to easily hold the coils 322 and the magnet 313 concentric to each other while protecting the coils 322, Thereby forming a magnetic circuit.

The concentric yoke 340 includes a cylindrical body portion 341, a cylindrical upper portion 342, a cylindrical lower portion 343, and a cylindrical upper end portion 344, and is integrally configurable. At this time, the cylindrical upper portion 342 extends horizontally in a circumferential direction on the cylindrical body portion 341 and is disposed on the coil 322. This structure allows a touch with the magnet 313 . The cylindrical lower portion 343 is smaller in diameter than the cylindrical body portion 341 and protrudes downward from the cylindrical body portion 341 to be inserted or pressed into the coil 322 to fix the concentric yoke 340 I will install it.

The magnet 313 is formed in a ring shape so as to surround the periphery of the coil 322. The weight 321 is disposed so as to surround the magnet 313. [ A yoke 323 is interposed between the magnet 313 and the elastic body 320. The yoke 323 may be a metal ring shaped like a magnetic body and may be interposed between the yoke 323 and the elastic body 320 by being adhered and fixed to the magnet 313.

The elastic body 320 is formed of a coil spring and one end 320a is fixed to the side wall 311b or the corner between the side wall 311b and the bracket 312 to thereby secure the inner space 310a . And the magnet 313 is provided at the other end 320b.

The linear vibration motor 300 according to the third embodiment of the present invention includes a first damper 330 and a second damper 331 together with a stator and a vibrator. In the case of the first damper 330, The second damper 331 is provided between the elastic body 320 and the housing 310. The second damper 331 is provided between the elastic body 320 and the housing 310. [ In other words, the first and second dampers 330 and 331 are disposed inside and outside the elastic body 320.

The first and second dampers 330 and 331 are formed using rubber or silicone which is easy to perform a damping action. In the case of the first damper 330, The elastic member 320 and the weight member 321 are positioned as close as possible to the other end 320b of the elastic member 320 so as to effectively prevent the touch of the elastic member 320 and the weight member 321.

Therefore, according to the linear vibration motor 300 according to the third embodiment of the present invention, the first and second dampers 330 and 331 are disposed on the inner side and the outer side of the elastic body 320, respectively, It is possible to prevent the occurrence of noise and to prevent breakage and cracking during drop impact to ensure falling reliability and to prevent the elastic body 320 from being shaken by an external force in a state in which the linear vibration motor 300 is not used Ringing can be effectively reduced.

6 to 7, the linear vibration motor 400 according to the fourth embodiment of the present invention includes a stator and a vibrator. The stator includes a magnet 413, a housing (not shown) disposed in the inner space 410a 410, and includes the elastic body 420, the weight 421, and the coil 422 as the vibrator.

The housing 410 has a structure in which an inner space 410a is formed so as to receive the vibrator together with the magnet 413 and includes a case 411 including a fixed plate 411a and a side wall 411b surrounding the fixed plate 411a And a bracket 412 assembled with the case 411 and covering the inner space 410a. The bracket 412 is provided with a circuit board 414 for applying external power to the coil 422.

The magnet 413 includes a first magnet 413a fixed to the bracket 412 so as to be disposed at the center of the inner space 410a and a second magnet 413a disposed opposite to the first magnet 413a, Magnet 413b. A cushion 440 may be interposed between the first and second magnets 413a and 413b. Therefore, the first and second magnets 413a and 413b can be prevented from being disengaged by the compressive force of the cushion 440 during a falling impact.

The elastic body 420 is formed of a coil spring and one end 420a of the elastic body 420 is accommodated in the inner space 410a of the housing 410 by being fixed to the corner between the fixing plate 411a and the side wall 411b. And a coil 422 and a weight 421 which are disposed opposite to the magnet 413 at the other end 420b and electrically connected to the circuit board 414. [ The weight 421 is provided through a yoke 423 which is interposed between the elastic body 420 and the elastic body 420 and between the elastic body 420 and the weight body 421.

The linear vibration motor 400 according to the fourth embodiment of the present invention includes a first damper 430 and a second damper 431 together with a stator and a vibrator. In the case of the first damper 430, The second damper 431 is fixed to the fixed plate 411a and is tightly attached to the circumference of the second magnet 413b so as to be wrapped around the first magnet 413a . The first and second dampers 430 and 431 are fixed and supported by the first and second magnets 413a and 413b so that the first and second magnets 413a and 413b are fixedly installed A guide or an adhesive layer may be omitted.

The first and second dampers 430 and 431 have a common feature to prevent the coil 422 and the bracket 412 from touching each other during a drop impact and to absorb shock transmitted to the coil 422, It is formed using silicon, rubber, poron or the like which is easy to perform a damping action to effectively prevent disconnection from the circuit board 414.

Therefore, according to the linear vibration motor 400 according to the fourth embodiment of the present invention, when the drop 421 is brought into contact with the first and second dampers 430 and 431, It is possible to secure reliability, and it is possible to effectively prevent a phenomenon in which a damage is caused due to interference between parts, and a phenomenon in which a breakage or disconnection occurs.

The first and second dampers 430 and 431 may eliminate a guide or an adhesive layer for installing the first and second magnets 413a and 413b, The air gap between the coil 422 and the coil 422 can be reduced to increase the size of the weight 421 and the weight of the weight 421 can be increased to increase the vibration power or increase the excitation force, Thereby enhancing the dynamic power.

On the other hand, by reducing the air gap between the magnet 413 and the coil 422, the magnetic flux can be effectively increased by increasing the magnetic flux density. This increase in the electromagnetic force leads to an effect that the response speed of the linear vibration motor 400 is increased.

8-11, the linear vibration motor 500 according to the fifth embodiment of the present invention includes a stator and a vibrator. The stator includes a magnet 513, a housing (not shown) disposed in the inner space 510a 510, and includes the elastic body 520, the weight 521, and the coil 522 as the vibrator.

The housing 510 includes a housing 511a having a fixing plate 511a and a side wall 511b surrounding the fixing plate 511a and having an internal space 510a formed therein to receive the vibrator together with the magnet 513, And a bracket 512 assembled with the case 511 and covering the inner space 510a. The bracket 512 is provided with a circuit board 514 for applying external power to the coil 522.

The magnet 513 is installed on the fixing plate 511a of the case 511 so as to be disposed at the center of the inner space 510a. A cushion 540 may be fixed to the bracket 512 so as to face the magnet 513. Therefore, when the impact is dropped, the magnet 513 can be prevented from being separated by the compressive force of the cushion 540. In addition, a plate yoke 515 may be interposed between the cushion 540 and the magnet 513.

The elastic body 520 is formed of a coil spring and one end 520a of the elastic body 520 is accommodated in the inner space 510a of the housing 510 by being fixed to the corner between the fixing plate 511a and the side wall 511b. And a coil 522 and a weight 521 which are disposed opposite to the magnet 513 at the other end 520b and electrically connected to the circuit board 514. [ Here, the weight 521 is provided directly on the elastic body 520 or through a yoke 523 interposed between the elastic body 520 and the weight body 521.

Meanwhile, the linear vibration motor 500 according to the fifth embodiment of the present invention includes a first damper 530 together with a stator and a vibrator, and a second damper 531 (not shown) disposed opposite to the first damper 530, ). The first damper 530 is fixed to the fixing plate 511a and is wrapped around the magnet 513.

That is, the first damper 530 is disposed and supported by the magnet 513 so that a guide or an adhesive layer for fixing the magnet 513 can be omitted. The second damper 531 is fixed to the bracket 512.

The first and second dampers 530 and 531 have a common feature that not only prevents the coil 522 and the bracket 512 from touching each other during the fall impact, but also absorbs impact transmitted to the coil 522, Silicon, rubber, or poron, which is easy to perform a damping action to effectively prevent disconnection from the circuit board 514.

Therefore, according to the linear vibration motor 500 according to the fifth embodiment of the present invention, when the drop impact occurs, the coil 522 comes into contact with the first damper 530 or the second damper 531, And it is possible to effectively prevent a phenomenon in which damage or breakage occurs due to damage due to interference between parts.

In addition, the air gap between the magnet 513 and the coil 522 can be reduced, thereby increasing the magnetic flux density, thereby effectively improving the electromagnetic force. This increase in the electromagnetic force leads to an effect that the response speed of the linear vibration motor 500 is increased.

On the other hand, if the air gap between the magnet 513 and the coil 522 is reduced, the weight 521 can be increased in size, thereby increasing the weight and improving the vibration power or increasing the excitation force So that the driving force can be improved by increasing the driving displacement.

While the preferred embodiments of the present invention have been disclosed for illustrative purposes, those skilled in the art will appreciate that various modifications, additions and substitutions are possible, without departing from the scope and spirit of the invention as disclosed in the accompanying claims.

The specific scope of protection, including all the simple modifications and variations of the embodiments of the present invention, will become apparent from the appended claims.

100, 200, 300, 400, 500: Linear vibration motor
110, 210, 310, 410, 510: housing
110a, 210a, 310a, 410a, 510a:
111, 211, 311, 411, 511: case
111a, 211a, 311a, 411a, 511a:
111b, 211b, 311b, 411b, 511b:
112, 212, 312, 412, 512:
113, 213, 313, 413, 513: magnet
113a and 413a: a first magnet
113b and 413b: the second magnet
114, 214, 314, 414, 514: circuit board
115, 215, 515: plate yoke
120, 220, 320, 420, 520:
120a, 220a, 320a, 420a, 520a:
120b, 220b, 320b, 420b, 520b:
121, 221, 321, 421, 521:
122, 222, 322, 422, 522:
123, 223, 323, 423, 523: York
130, 230, 330, 430, 530: a first damper
131, 231, 331, 431, 531: a second damper
132, 232: a third damper
312a:
340: Concentric yoke
341: Cylindrical body part
342: cylindrical top
343: cylindrical bottom
344: Cylindrical upper end
440, 540: cushion

Claims

A stator including a housing having an inner space in which a magnet is disposed;
A vibrator including an elastic body disposed in the inner space and linearly moving, a weight provided on the elastic body, and a coil disposed opposite to the magnet;
A first damper provided between the elastic body and the weight body; And
A second damper provided between the elastic body and the housing;
And a linear vibration motor.

The method according to claim 1,
The housing may include a case having a fixed plate on one end of the elastic body and a side wall surrounding the fixed plate; And
A bracket assembled to a side wall of the case to cover the inner space;
And a linear vibration motor.

The method according to claim 1,
The magnet includes a first magnet fixed to the center of the inner space; And
A second magnet disposed opposite to the first magnet;
And a linear vibration motor.

The method of claim 3,
A plate yoke interposed between the first and second magnets;
Further comprising a linear vibration motor.

The method according to claim 1,
The vibrator may include a yoke interposed between the elastic body and the weight body;
Further comprising a linear vibration motor.

The method according to claim 1,
A third damper provided between the housing and the coil;
Further comprising a linear vibration motor.

The method of claim 6,
And the third damper is in close contact with the periphery of the magnet to support the magnet.

A stator including a housing having an inner space in which coils are disposed;
A vibrator disposed in the inner space and linearly moving, a vibrator provided in the elastic body and including a magnet disposed opposite to the coil, and a weight disposed around the magnet;
A first damper provided between the elastic body and the weight body; And
A second damper provided between the elastic body and the housing;
And a linear vibration motor.

The method of claim 8,
The housing may include a case having a fixed plate on one end of the elastic body and a side wall surrounding the fixed plate; And
A bracket assembled to a side wall of the case to cover the inner space;
And a linear vibration motor.

The method of claim 8,
The vibrator includes: a yoke interposed between the elastic body and the magnet;
Further comprising a linear vibration motor.

A stator including a housing having an inner space in which a magnet is disposed;
A vibrator including an elastic body disposed in the inner space and linearly moving, a weight provided on the elastic body, and a coil disposed opposite to the magnet; And
A first damper fixedly installed on the housing and disposed opposite to the coil and supporting the magnet while closely surrounding the periphery of the magnet;
And a linear vibration motor.

The method of claim 11,
The housing may include a case having a fixed plate on one end of the elastic body and a side wall surrounding the fixed plate; And
A bracket assembled to a side wall of the case to cover the inner space;
And a linear vibration motor.

The method of claim 11,
A second damper disposed opposite to and facing the first damper;
Further comprising a linear vibration motor.

The method of claim 11,
The magnet includes a first magnet fixed to the center of the inner space; And
A second magnet disposed opposite to the first magnet;
And a linear vibration motor.

The method of claim 11,
A cushion interposed between the magnet and the housing;
Further comprising: a linear vibration motor.

15. The method of claim 14,
A cushion interposed between the first and second magnets;
Further comprising: a linear vibration motor.

16. The method of claim 15,
A plate yoke interposed between the cushion and the magnet;
Further comprising a linear vibration motor.