KR20120020485A - Linear type vibration motor and manufacturing method thereof - Google Patents

Linear type vibration motor and manufacturing method thereof Download PDF

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Publication number
KR20120020485A
KR20120020485A KR1020100084119A KR20100084119A KR20120020485A KR 20120020485 A KR20120020485 A KR 20120020485A KR 1020100084119 A KR1020100084119 A KR 1020100084119A KR 20100084119 A KR20100084119 A KR 20100084119A KR 20120020485 A KR20120020485 A KR 20120020485A
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KR
South Korea
Prior art keywords
electromagnet member
weight
permanent magnet
spring
vibration motor
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KR1020100084119A
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Korean (ko)
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KR101157985B1 (en
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서형석
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주식회사 대림음향
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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K1/00—Details of the magnetic circuit
    • H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
    • H02K1/12—Stationary parts of the magnetic circuit
    • H02K1/17—Stator cores with permanent magnets
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K15/00—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
    • H02K15/02—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies
    • H02K15/03—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies having permanent magnets
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K33/00—Motors with reciprocating, oscillating or vibrating magnet, armature or coil system
    • H02K33/02—Motors with reciprocating, oscillating or vibrating magnet, armature or coil system with armatures moved one way by energisation of a single coil system and returned by mechanical force, e.g. by springs
    • H02K33/10—Motors with reciprocating, oscillating or vibrating magnet, armature or coil system with armatures moved one way by energisation of a single coil system and returned by mechanical force, e.g. by springs wherein the alternate energisation and de-energisation of the single coil system is effected or controlled by movement of the armatures
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
    • H02K7/10—Structural association with clutches, brakes, gears, pulleys or mechanical starters
    • H02K7/102—Structural association with clutches, brakes, gears, pulleys or mechanical starters with friction brakes
    • H02K7/1021—Magnetically influenced friction brakes
    • H02K7/1023—Magnetically influenced friction brakes using electromagnets

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Reciprocating, Oscillating Or Vibrating Motors (AREA)
  • Apparatuses For Generation Of Mechanical Vibrations (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Manufacturing & Machinery (AREA)

Abstract

A linear vibration motor is disclosed. The present invention is to vibrate the weight in the vertical direction based on the electrical signal from the PCB in the inner space formed by the upper and lower casing, the upright formed in the bottom of the lower casing, the top of the cylindrical structure Electromagnet members; A coil provided at an outer side of the electromagnet member and electrically connected to a PCB provided at a bottom of the lower casing to magnetize the electromagnet member; A spring disposed on the upper casing to be spaced apart from the electromagnet member; The electromagnet member is formed in a structure surrounding the upper both sides, and the center is provided with an auxiliary weight portion protruding downwardly so that a part of the electromagnet member is magnetized into the opened inside of the electromagnet member, the weight coupled to the spring sieve; And a permanent magnet coupled to the weight body, and when the polarity of the electromagnet member and the permanent magnet are different due to the polarity change of the coil due to the control of the PCB, the magnet is pulled, and if the polarity is the same, the repetitive movement is repeatedly performed. It is supposed to generate. The linear vibration motor is combined with the weight and the permanent magnet weighted weight can be improved vibration force.

Description

Linear vibration motor and its manufacturing method {LINEAR TYPE VIBRATION MOTOR AND MANUFACTURING METHOD THEREOF}

The present invention relates to a linear vibration motor and a method of manufacturing the same, and more particularly, to a linear vibration motor and a method of manufacturing the same that can improve the response speed and output without changing the volume.

In general, ringtones and vibrations are widely used for incoming calls in communication devices. For vibration, it is common to drive a small vibration motor so that the driving force is transmitted to the case of the device so that the whole device can vibrate.

Vibration motor, which is one of the receiving means currently applied to communication devices such as mobile phones, is a part that converts electrical energy into mechanical energy (vibration) by using the principle of electromagnetic force, which is mounted on a mobile phone for notification of silent reception. It is used.

 However, the mobile phone market is expanding rapidly, and along with the demand for new functions, the adoption of touch screens for the use of multimedia is rapidly increasing. As the vibration is required, the necessity for the development of a new structure with a faster response and a higher vibration force than existing products is emerging.

This problem could be solved by the linear vibration motor generating vertical vibration in the vertical direction. That is, the linear vibration motor that vibrates up and down is equipped with a case having a predetermined internal space, a lower plate mounted on the lower surface, a magnet magnetized vertically, and a magnet to form a magnetic circuit together with the lower plate and the magnet. It is composed of a vibration generating coil and the like provided on the upper surface of the bracket for sealing the lower portion of the casing and the spring and the casing and the yoke to vibrate the upper and lower vibrating body including the yoke and the weight mounted to the yoke.

The vertical vibration motor of the up and down vibration type having such a configuration, when power is supplied to the vibration generating coil, is used for the interaction between the magnetic field generated in the magnetic circuit composed of the magnet, the lower plate and the yoke and the electric field generated in the vibration generating coil. As a result, since the vibrating body including the magnet, the lower plate, the yoke and the weight is suspended in the casing via the spring, the vibrating body vibrates up and down.

However, the vibration motor of the above structure has a problem that the entire volume must be increased in order to increase the magnetic force by increasing the size of the magnet to improve the response speed and vibration force.

The technical problem of the present invention is to provide a linear vibration motor and a method of manufacturing the same, which can improve output such as response speed and vibration force without changing the overall volume of the linear vibration motor.

The technical problem to be achieved by the present invention is not limited to the technical problem mentioned above, and other technical problems not mentioned above may be clearly understood by those skilled in the art from the following description. There will be.

The technical problem, according to the present invention,

In the inner space formed by the upper and lower casing to vibrate the weight in the vertical direction based on the electrical signal from the PCB,

An electromagnet member having a cylindrical structure formed upright at the bottom of the lower casing and having an upper opening;

A coil provided at an outer side of the electromagnet member and electrically connected to a PCB provided at a bottom of the lower casing to magnetize the electromagnet member;

A spring disposed on the upper casing to be spaced apart from the electromagnet member;

The electromagnet member is formed in a structure surrounding the upper both sides, and the center is provided with an auxiliary weight portion protruding downwardly so that a part of the electromagnet member is magnetized into the opened inside of the electromagnet member, the weight coupled to the spring sieve; And

It includes a permanent magnet coupled to the weight body,

When the power is applied from the PC to the coil, if the polarity of the electromagnet member and the permanent magnet is different due to the change in the magnetic field of the coil is pulled, and if the polarity is the same, it is characterized in that to generate a vibration by repeatedly performing the pushing motion Linear vibration motor can be provided.

According to another embodiment, the weight in the inner space formed by the upper, lower casing to vibrate in the vertical direction based on the electrical signal from the PC,

An electromagnet member formed upright on the bottom casing;

A coil provided inside the electromagnet member and electrically connected to a PCB provided at the bottom of the lower casing to magnetize the electromagnet member;

A spring disposed on the upper casing to be spaced apart from the electromagnet member;

A weight body formed in a structure surrounding the electromagnet member on both sides thereof and coupled to the spring; And

It includes a permanent magnet provided on the central bottom surface of the weight body,

When the power is applied from the PC to the coil, if the polarity of the electromagnet member and the permanent magnet is different due to the change in the magnetic field of the coil is pulled, and if the polarity is the same, it is characterized in that to generate a vibration by repeatedly performing the pushing motion Linear vibration motor can be provided.

The weight body is formed in a circular shape, the bottom edge protrudes downwardly to form a weight part, and a center part of the bottom face is formed with a space for accommodating the coil and the electromagnet member.

The permanent magnet is made of a circular shape, it is coupled to the outside of the space.

The electromagnet member is configured separately from the lower casing and are coupled to each other.

The electromagnet member is formed integrally with the lower casing.

The bottom of the permanent magnet is provided with a plate made of a magnetizable metal for increasing magnetic force.

On the other hand, as a method for manufacturing a vertical vibration linear vibration motor,

a) forming the electromagnet member upright from the bottom of the lower casing, and then placing the PCB in the remaining area except the electromagnet member;

b) winding the coil on the outside of the electromagnet member and electrically connecting the PCB;

c) installing a spring on an inner upper surface of the upper casing, wherein the protruding center portion of the spring faces downward;

d) forming a circular weight body, wherein the bottom magnetic field is formed to protrude downwardly from the weight portion, and a concave space portion is formed at the center;

e) forming a permanent magnet in the shape of a circular donut and coupling it to the outside of the space part;

f) coupling the weight body combined with the permanent magnet to the bottom of the central portion of the spring; And

g) When the weight is coupled to the spring, it can provide a linear vibration motor manufacturing method comprising the step of coupling the upper casing and the lower casing.

In addition, as a method for manufacturing a vertical vibration linear vibration motor,

a) coupling the electromagnet member to the bottom of the lower casing to stand upright, and then placing the PC in an area other than the region in which the electromagnet member is installed;

b) winding the coil inside the electromagnet member and electrically connecting it with the PCB;

c) installing a spring on an inner upper surface of the upper casing, wherein the protruding center portion of the spring faces downward;

d) forming a circular weight body, wherein the bottom magnetic field is formed to protrude downwardly from the weight portion, and a concave space portion is formed at the center;

e) coupling the permanent magnet to the inner center of the space portion;

f) coupling the weight body combined with the permanent magnet to the bottom of the central portion of the spring; And

g) When the weight is coupled to the spring, it can provide a linear vibration motor manufacturing method comprising the step of coupling the upper casing and the lower casing.

And, the step e) further comprises the step of coupling the plate of the magnetizable metal on the bottom of the permanent magnet.

According to the present invention, the electromagnet member is electrically magnetized, and since the permanent magnet is disposed outside the coil or the electromagnet member, it becomes relatively bulky, so that a strong magnetic force line can be formed. It can be improved.

In addition, since the permanent magnet is coupled to the weight body has the effect that the weight is increased and the vibration force can be improved.

1 is a schematic cross-sectional view showing a linear vibration motor according to a preferred embodiment of the present invention.
Figure 2 is an operating state diagram of the linear vibration motor shown in FIG.
Figure 3 is a schematic cross-sectional view showing a linear vibration motor according to another embodiment of the present invention.
4 is an operational state diagram of the linear vibration motor shown in FIG.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. However, in describing the present invention, descriptions of already known functions or configurations will be omitted to clarify the gist of the present invention.

1 is a schematic cross-sectional view showing a linear vibration motor according to a preferred embodiment of the present invention, Figure 2 is an operating state diagram of the linear vibration motor shown in FIG.

As shown in FIG. 1, the linear vibration motor according to the present embodiment is electrically provided with a lower casing 10 and an upper casing 20, a PC 30 for supplying and controlling power, and a coil 50. The inner surface of the weight body 70 and the weight body 70 which is provided in the magnetized electromagnet member 40, the spring 60, the spring 60 and vibrates up and down when magnetizing and releasing the electromagnet member 40 It consists of a permanent magnet (80) coupled to.

Looking at the linear vibration motor and a method of manufacturing the same according to the present embodiment in more detail as follows.

The upper and lower casings 10 and 20 are for protecting the respective components, and the upper casing 10 has a structure which is opened downward, and the lower casing 20 is formed on the opened four sides of the lower casing 10. To close the space. Internal spaces are formed inside the upper and lower casings 10 and 20.

The PC 30 is disposed at the bottom of the lower casing 20 and controls the coil 50 to supply power or change a signal. That is, the power applied to the coil 50 is controlled to repeatedly change the polarity of the electronic member 40. The coil 50 is wound on the outer circumferential surface of the cylindrical electromagnet member 40 which is formed upright in the lower casing 20 so as to electrically magnetize the electromagnet member 40 when power is applied from the PC 30. do. To this end, the coil 50 is electrically connected to the PC 30.

As described above, the electromagnet member 40 is electrically magnetized by a power source applied to the coil 50. The electromagnet member 40 is formed in a cylindrical shape with an upper portion opened, and is integrally formed with the lower casing 20. That is, as shown in Figure 1 is formed to stand upright in the bottom of the lower casing (20). At this time, the lower casing 20 is preferably made of a metal capable of magnetization. In addition, the electromagnet member 40 may be manufactured separately and coupled to the lower casing 20.

The spring 60 is for elastically supporting the weight body 70 to generate vibration by the up and down movement of the weight body 70, and has a structure in which the center portion protrudes. The weight body 70 is coupled to the central portion of the spring (60). In addition, the spring 60 may be made of a metal having magnetization, or may be made of a nonmagnetic material. The spring 60 may be bent to have sufficient elasticity and support force, cut grooves may be formed, and coil springs of various shapes and structures may be used.

The weight body 70 is coupled to the bottom surface of the spring 60 to generate vibrations, and forms a whole circle, and a weight portion 72 protruding downward is formed at the bottom edge. Thus, the space portion 74 which is opened downward in the center portion is formed by the weight portion 72 protruding downwardly from the bottom edge. The space portion 74 is for accommodating a part of the coil 50 and the electromagnet member 40 and the permanent magnet 80. The lower and inner sides of the weight portion 72 are fillets. This fillet is to prevent interference with the other place during the vertical movement of the weight body (70).

In addition, the space portion 74 of the weight body 70 is provided with an auxiliary weight portion 76. This auxiliary weight portion 76 may be formed integrally with the weight body 70, as shown in Figure 1, although not shown in the figure, it is manufactured separately and coupled to the space portion 74 of the weight body 70 May be

The weight body 70 is coupled to the center of the bottom surface of the spring 60 by a variety of coupling means such as rivets, screws, melting point, etc., by changing the magnetic force of the permanent magnet 80 and the electromagnet member 40, It will vibrate downward.

Permanent magnet 80 is formed in the shape of a ring or donut is coupled to the outer space portion 74 of the weight 70 by a variety of coupling means. At this time, since the permanent magnet 80 is formed in a ring shape, since the permanent magnet 80 has a large volume and an area as compared with the cylindrical permanent magnet installed in the center of the spring, a larger magnetic force can be obtained.

The lower surface of the permanent magnet 80 is coupled to the plate 82 made of a magnetic material. This plate 82 is for concentrating the magnetic force of the permanent magnet and increasing the magnetic force.

The process of manufacturing the linear vibration motor by combining each of these components is as follows.

First, as described above, the electromagnet member 40 protrudes from the bottom center of the lower casing 20 so as to stand upright. Then, the PCB 30 is disposed in the region excluding the electromagnet member 40. Next, the coil 50 is wound around the outer circumferential surface of the electromagnet member 40.

Then, the coil 50 and the PC 30 are electrically connected.

Subsequently, the spring 60 is installed on the inner upper surface of the upper casing 10, but the protruding center portion of the spring 60 is installed downward.

In this state, the weight body 70 is formed in a circular shape, but the weight portion 72 is formed at the bottom edge thereof, and a recessed space portion 74 opened downward is formed at the bottom face thereof. At this time, inside and outside the lower end of the weight portion 72 performs a chamfer. And the auxiliary weight part 76 protrudes integrally from the inner center of the space part 74 directly below.

Subsequently, the permanent magnet 80 is formed in a circular donut shape and coupled to the outer side of the space portion 74 of the weight body 70.

Then, the plate 82 made of a magnetic material is coupled to the bottom surface of the permanent magnet 80.

When the permanent magnet 80 and the plate 82 are coupled to the space portion 74 of the weight body 70 as described above, the weight body 70 is used to engage the coupling means such as riveting the center of the spring 60. To combine.

Subsequently, when the weight body 70 is coupled to the spring 60, the upper casing 10 is coupled to the lower casing 20 so as to receive and protect each component in its inner space.

In this process, the upper portion of the electromagnet member 40 is in a state of being positioned inside the space 74, and the lower end portion of the auxiliary weight part 76 is inserted into the electromagnet member 40.

The operation of the linear vibration motor manufactured as described above will be described below with reference to FIG. 2.

When power is applied to the coil 50 from the PC 30, the electromagnet member 40 is electrically magnetized.

Accordingly, the electromagnet member 40 pulls the permanent magnet 80 disposed at the corresponding position by the attraction force. That is, the electromagnet member 40 is to pull the permanent magnet 80 coupled to the weight body 70.

At this time, since the plate 82 is coupled to the permanent magnet 80, the magnetic force is increased, the pulling of the electromagnet member 40 is made stronger.

Therefore, the weight body 70 moves downward while overcoming the elasticity of the spring 60.

In addition, when the electrical signal of the power applied to the coil 50 is changed by the controller (not shown), the electromagnet member 40 may have a different polarity. Accordingly, the electromagnet member 40 pushes the permanent magnet 80, and the weight body 70 to which the permanent magnet 80 is coupled is returned to its original state (moved upward) by the restoring elastic force of the spring 60. will be.

Subsequently, when the electrical signal of the power applied to the coil 50 is changed again, the electromagnet member 40 has a different polarity from that of the permanent magnet 80 to pull the permanent magnet 80, and when the electrical signal is changed again. Since the same polarity pushes the permanent magnet 80, the weight 70 is moved up and down by the restoring elasticity of the spring 60 and the pulling operation of the electromagnet member 40.

That is, the operation of the polarity of the electromagnet member 40 equal to or different from that of the permanent magnet 80 is repeatedly and quickly performed. Accordingly, the upper and lower movements of the weight body 70 are repeatedly performed, thereby causing vibration. Will occur. At this time, since the weight body 70 and the permanent magnet 80 are coupled, the weight is increased to improve the vibration force.

The vibration motor is easy to control because it can generate vibration only by changing the signal of the power applied to the coil 50, and the weight 70 and the permanent magnet 80 are combined to weight the electromagnet member ( When the magnetization of 40) becomes larger, the vibration output can be improved.

On the other hand, Figure 3 and Figure 4 of the accompanying drawings shows another embodiment of the present invention.

3 and 4, the linear vibration motor according to another embodiment is provided with a coil 50 on the inner circumferential surface of the electromagnet member 40 disposed in the center of the lower casing 20, the weight 70 The permanent magnet 80 is provided in the center of the space portion 74 of the linear vibration motor of the above-described embodiment except that the plate 82 is coupled to the lower end of the permanent magnet 80. Same as

When the upper and lower casings 10 and 20 are coupled to the linear vibration motor, the electromagnet member 40 and the upper one side of the coil 50 are positioned in the space portion 74 of the weight body 70 and the coil ( A portion of the permanent magnet 80 and the plate 82 is positioned in the space opened upwards of the 50 and the electromagnet member 40.

Therefore, when the electromagnet member 40 is magnetized in the state in which the permanent magnet 80 is coupled to the weight body 70 and is different from the polarity of the permanent magnet 80, the electromagnet member 40 pulls the permanent magnet 80, If it is the same, it is pushed. At this time, when the electromagnet member 40 pulls the permanent magnet 80, a portion of the upper end of the electromagnet member 40 is accommodated in the space portion 74, the permanent magnet 80 is in the inside of the electromagnet member 40 It is in a state to be located.

When the polarity of the electromagnet member 40 is changed to be the same as that of the permanent magnet 80, the permanent magnet 80 is pushed by the electromagnet member 40, and the weight 70 is applied to the elasticity of the spring 60. It is moved upward by this, it generates vibration by this repetitive operation.

As described above, the weight 70 and the permanent magnet 80 are coupled, and the polarity of the electromagnet member 40 is controlled to move the weight 70 and the permanent magnet 80 in the vertical direction, thereby generating vibration. Will be, because the weight 70 and the permanent magnet 80 is combined with the weight is added to the vibration force can be generated. That is, the output can be improved.

While specific embodiments of the invention have been described and illustrated above, it is to be understood that the invention is not limited to the described embodiments, and that various modifications and changes can be made without departing from the spirit and scope of the invention. It is self-evident to those who have. Therefore, such modifications or variations are not to be understood individually from the technical spirit or point of view of the present invention, the modified embodiments will belong to the claims of the present invention.

10: upper casing 20: lower casing
30: PCB 40: Electromagnet member
50: coil 60: spring
70 weight part 72 weight part
74: space part 76: auxiliary weight part
80 permanent magnet 82 plate

Claims (11)

In the inner space formed by the upper and lower casing to vibrate the weight in the vertical direction based on the electrical signal from the PCB,
An electromagnet member having a cylindrical structure formed upright at the bottom of the lower casing and having an upper opening;
A coil provided at an outer side of the electromagnet member and electrically connected to a PCB provided at a bottom of the lower casing to magnetize the electromagnet member;
A spring disposed on the upper casing to be spaced apart from the electromagnet member;
The electromagnet member is formed in a structure surrounding the upper both sides, and the center is provided with an auxiliary weight portion protruding downwardly so that a part of the electromagnet member is magnetized into the opened inside of the electromagnet member, the weight coupled to the spring sieve; And
It includes a permanent magnet coupled to the weight body,
Linear vibration motor, characterized in that by the polarity change of the coil due to the control of the PCC pulls if the polarity of the electromagnet member and the permanent magnet is different, and if the polarity is the same, the vibration is repeatedly performed to generate a vibration. In the inner space formed by the upper and lower casing to vibrate the weight in the vertical direction based on the electrical signal from the PCB,
An electromagnet member formed upright on the bottom casing;
A coil provided inside the electromagnet member and electrically connected to a PCB provided at the bottom of the lower casing to magnetize the electromagnet member;
A spring disposed on the upper casing to be spaced apart from the electromagnet member;
A weight body formed in a structure surrounding the electromagnet member on both sides thereof and coupled to the spring; And
It includes a permanent magnet provided on the central bottom surface of the weight body,
Linear vibration motor, characterized in that by the polarity change of the coil due to the control of the PCC pulls if the polarity of the electromagnet member and the permanent magnet is different, and if the polarity is the same, the vibration is repeatedly performed to generate a vibration. The method of claim 1,
The weight body is formed in a circular shape, the bottom edge is protruded directly below the weight portion is formed, the center of the bottom surface is characterized in that the space portion for receiving the coil and the electromagnet member is formed. The method of claim 2,
The weight body is formed in a circular shape, the bottom edge is protruded directly below the weight portion is formed, the center of the bottom surface is characterized in that the space portion for receiving the coil and the electromagnet member is formed. The method of claim 3,
The permanent magnet is made of a circular, linear vibration motor, characterized in that coupled to the outside of the space. The method of claim 2,
The electromagnet member is a linear vibration motor, characterized in that configured separately from the lower casing. The method of claim 1,
The electromagnet member is a linear vibration motor, characterized in that formed integrally with the lower casing. The method according to any one of claims 1 to 7,
The bottom surface of the permanent magnet is a linear vibration motor, characterized in that the plate is provided with a magnetizable metal for increasing the magnetic force. As a method for manufacturing a vertical vibration linear vibration motor,
a) forming the electromagnet member upright from the bottom of the lower casing, and then placing the PCB in the remaining area except the electromagnet member;
b) winding the coil on the outside of the electromagnet member and electrically connecting the PCB;
c) installing a spring on an inner upper surface of the upper casing, wherein the protruding center portion of the spring faces downward;
d) forming a circular weight body, wherein the bottom magnetic field is formed to protrude downwardly from the weight portion, and a concave space portion is formed at the center;
e) forming a permanent magnet in the shape of a circular donut and coupling it to the outside of the space part;
f) coupling the weight body combined with the permanent magnet to the bottom of the central portion of the spring; And
g) when the weight is coupled to the spring, linear vibration motor manufacturing method comprising the step of coupling the upper casing and the lower casing. As a method for manufacturing a vertical vibration linear vibration motor,
a) coupling the electromagnet member to the bottom of the lower casing to stand upright, and then placing the PC in an area other than the region where the electromagnet member is installed;
b) winding the coil inside the electromagnet member and electrically connecting it with the PCB;
c) installing a spring on an inner upper surface of the upper casing, wherein the protruding center portion of the spring faces downward;
d) forming a circular weight body, wherein the bottom magnetic field is formed to protrude downwardly from the weight portion, and a concave space portion is formed at the center;
e) coupling the permanent magnet to the inner center of the space portion;
f) coupling the weight body combined with the permanent magnet to the bottom of the central portion of the spring; And
g) when the weight is coupled to the spring, linear vibration motor manufacturing method comprising the step of coupling the upper casing and the lower casing. The method according to any one of claims 9 to 10,
Wherein the step e) further comprises the step of coupling a plate made of a magnetizable metal on the bottom of the permanent magnet.

KR1020100084119A 2010-08-30 2010-08-30 Linear type vibration motor KR101157985B1 (en)

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