KR101004134B1 - Linear vibration motor - Google Patents

Linear vibration motor Download PDF

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Publication number
KR101004134B1
KR101004134B1 KR1020100070166A KR20100070166A KR101004134B1 KR 101004134 B1 KR101004134 B1 KR 101004134B1 KR 1020100070166 A KR1020100070166 A KR 1020100070166A KR 20100070166 A KR20100070166 A KR 20100070166A KR 101004134 B1 KR101004134 B1 KR 101004134B1
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KR
South Korea
Prior art keywords
case
vibration
coil
magnet
piece
Prior art date
Application number
KR1020100070166A
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Korean (ko)
Inventor
김태진
Original Assignee
주식회사 블루콤
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Priority to KR1020100070166A priority Critical patent/KR101004134B1/en
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Publication of KR101004134B1 publication Critical patent/KR101004134B1/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B06—GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL
    • B06B—METHODS OR APPARATUS FOR GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS OF INFRASONIC, SONIC, OR ULTRASONIC FREQUENCY, e.g. FOR PERFORMING MECHANICAL WORK IN GENERAL
    • B06B1/00—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency
    • B06B1/02—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy
    • B06B1/04—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy operating with electromagnetism
    • B06B1/045—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy operating with electromagnetism using vibrating magnet, armature or coil system
    • 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
    • H02K1/14—Stator cores with salient poles
    • H02K1/146—Stator cores with salient poles consisting of a generally annular yoke with salient poles
    • 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
    • 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

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

Abstract

The present invention relates to a linear vibrating motor capable of vibrating an electronic device, etc., wherein the case is open at one side and the inside is empty, and one side of the open case can be closed while one side edge is in the outward direction of the case. A bracket having a protruding extension, a magnet attached to the inner top surface of the case to generate a magnetic field having a fixed direction and intensity, and mounted at the inner side of the case to face the magnet to transmit electricity of a specific frequency It generates a magnetic field of varying intensities and directions according to the signal, and then interacts with the magnetic field generated from the magnet to vibrate in the longitudinal direction of the case. In addition, the vibrating body is inserted into the case with one side facing the expansion piece, the connecting piece which can receive an electrical signal of a specific frequency transmitted from the outside, and one edge is connected to the connecting piece from the connecting piece Receives the electric signal of a specific frequency to be transmitted and fixed to the connecting piece in the state of moving in the longitudinal direction of the case, mounted on one side of the moving piece facing the magnet and transmitted to the moving piece via the connecting piece When receiving an external electric signal to generate a magnetic field of varying strength and direction, and then interacts with the magnetic field of the magnet to move in the longitudinal direction of the case with the moving piece, and mounted on the outer peripheral surface of the coil Move along the length of the case with the coil to maximize the intensity of vibration And the vibration can be mounted to the yoke coil so that it no longer unbiased from the inside of the casing in one direction to the vibration so that the magnetic field generated from the magnet and the coil can be uniformly shingles in the predetermined range. In addition, the vibrating body is interposed between the connecting piece and the vibration yoke, both sides are coupled to one side of the bracket and one side of the vibration yoke and the elastic member is provided with a through hole through which the moving piece can pass through the coil and The vibration generated from the coupled vibration yoke can be effectively transmitted to the outside. The linear vibration motor according to the present invention having such a structure includes a coil for generating a magnetic field whose intensity and direction are variable according to an electric signal of a specific frequency input from the outside, and a magnet for generating a magnetic field having a fixed intensity and direction at all times; And a vibration yoke and an elastic member capable of maximizing the vibration of the coil moving in the vertical direction with respect to the magnet. Therefore, the linear vibration motor according to the present invention has an advantage of semi-permanently preserving the life of the vibration motor by not using a brush and a commutator applied to the existing vibration motor.

Description

Linear vibration motor

The present invention relates to a linear vibration motor, and more particularly, to a linear vibration motor that can be inserted into a mobile device or the like to vibrate a mobile device or the like.

In general, a communication device is equipped with a voice device such as a melody or a bell or a vibration device that shakes the device so that the owner of the communication device knows the reception state of the information.

The vibration device has been proposed to reduce the noise damage caused by the voiced device. The vibration device may be a small vibration motor that can be inserted into a mobile phone.

Vibration motors currently applied to mobile phones include a "linear vibration device" filed and registered by the company of the present inventor. The linear vibration device includes a bracket 101 having a flat plate shape, as shown in FIG. The cover 103 which is coupled to the bracket 101 and at the same time has an empty inside, a permanent magnet 105 mounted on the inner top surface of the cover 103 to generate a magnetic field having a fixed size and direction, and the cover ( The lower PCB 107 is mounted on one side of the bracket 101 disposed inside the 103 to receive an electrical signal of a specific frequency transmitted from the outside.

In addition, while being able to exert a certain size of elasticity on one side of the lower PCB 107 disposed inside the cover 103, the elasticity that can receive an electrical signal of a specific frequency transmitted from the lower PCB 107 A magnetic field that is mounted on one side of the member 109 and the elastic member 109 disposed inside the cover 103 to change its size and direction according to an electrical signal of a specific frequency transmitted from the elastic member 109. Then, the vibration body 111 capable of vibrating in the longitudinal direction of the permanent magnet 105 together with the elastic member 109 by interacting with the magnetic field generated from the permanent magnet 105, and the permanent magnet 105 The yoke 112 may be mounted on a circumferential surface of the circumferential surface to concentrate the magnetic field of the permanent magnet 105 in a specific direction.

In addition, the vibrating body 111 is bonded to one side of the elastic member 109, the upper PCB 113 for receiving an electrical signal of a specific frequency transmitted from the elastic member 109 and the upper PCB 113 Coil 115, which is bonded to one side of and mounted to face the permanent magnet 105 to receive an electric signal of a specific frequency transmitted from the upper PCB 113, and generates a magnetic field of a variable size and direction, and It may be composed of a weight 117 mounted on an outer circumferential surface of the coil 115 and one side of the upper PCB 113.

However, the linear vibrating device has a problem in that it can be applied to a small number of mobile devices because the voltage frequency range capable of driving the linear vibrating device is narrow, and the weight may be separated from the magnet when the mobile device falls to the floor. There was this.

In addition, the linear vibration device previously applied has a problem that the vibration force may be scattered due to the low voltage frequency and the weight of the weight 117.

In addition, the weight 117 has a problem in that the vibration frequency can be deformed by damaging the elastic member over time, there is a problem that may cause a vibration bottom phenomenon.

Accordingly, the present invention solves the problems in the characteristics of the conventional linear vibration device as described above to make the linear vibration device compatible with a plurality of mobile devices, and the parts that are in contact with the weight due to the existing weights are damaged It is an object of the present invention to provide a linear vibration motor that can minimize the noise generated from the linear vibration device.

In addition, another object of the present invention is to provide a linear vibration motor that can reduce the cost of the linear vibration device by reducing the part to be inserted into the linear vibration device and some processes for manufacturing the linear vibration device. .

The linear vibration motor of the present invention for achieving the above object is a case in which one side is opened and the inside is empty, and one side of the open case can be closed while protruding in one direction to the outside of the case. A bracket having an extension piece, a magnet attached to the inner upper surface of the case to generate a magnetic field having a fixed direction and intensity, and mounted inside the case to face the magnet to transmit electrical signals of a specific frequency transmitted from the outside; As a result, a magnetic field of varying strength and direction is generated, and then a vibration body capable of vibrating in the longitudinal direction of the case by interacting with a magnetic field generated from the magnet.

In addition, the vibrating body is inserted into the case with one side facing the expansion piece, the connecting piece which can receive an electrical signal of a specific frequency transmitted from the outside, and one edge is connected to the connecting piece from the connecting piece Receives the electric signal of a specific frequency to be transmitted and fixed to the connecting piece in the state of moving in the longitudinal direction of the case, mounted on one side of the moving piece facing the magnet and transmitted to the moving piece via the connecting piece When receiving an external electric signal to generate a magnetic field of varying strength and direction, and then interacts with the magnetic field of the magnet to move in the longitudinal direction of the case with the moving piece, and mounted on the outer peripheral surface of the coil Move along the length of the case with the coil to maximize the intensity of vibration And the vibration can be mounted to the yoke coil so that it no longer unbiased from the inside of the casing in one direction to the vibration so that the magnetic field generated from the magnet and the coil can be uniformly shingles in the predetermined range.

In addition, the vibrating body is interposed between the connecting piece and the vibration yoke, both sides are coupled to one side of the bracket and one side of the vibration yoke and the elastic member is provided with a through hole through which the moving piece can pass through the coil and The vibration generated from the coupled vibration yoke can be effectively transmitted to the outside.

The linear vibration motor according to the present invention does not use a brush and a commutator, thereby reducing the mechanical wear of the vibration motor, and by ensuring a sufficient space for the vibration yoke having a predetermined mass can be vibrated, the maximum volume under the same volume The amount of vibration can be generated and the amount of vibration can be controlled according to the frequency by using the resonance frequency.

In addition, the signal transmission member and the vibration yoke coupled to the coil can not deform the elastic member unless an electrical signal of a specific frequency is input to the coil, and thus, between the lower end of the vibration yoke and the bracket coupled with the bracket before the cover is engaged. By checking the intervals, all products can be adjusted to have equal quality.

In addition, since the vibrating body combined with the bracket only needs to be inserted into the inner side of the case in which the magnet is mounted, it is easy to assemble and has an advantage of troubleshooting and characteristic inspection.

In addition, the coil provided in the present invention may be in a state of being '0' magnetically when an electric signal of a specific frequency disappears, thereby enabling fast response speed and characteristic design.

In addition, the present invention reduced the manufacturing process for the linear vibration motor by combining the existing weight and yoke as one, it was possible to reduce the cost without having to produce a separate weight and yoke.

In addition, by using a relatively light weight vibration yoke instead of a heavy weight, the voltage frequency range for vibrating the vibration yoke can be widened, and vibration noise can be reduced.

In addition, according to the present invention, by using a lightened vibration yoke instead of weight, it is possible to prevent the elastic member from being damaged by weight over time.

1 is an exploded perspective view of a linear vibration motor according to the present invention;
Figures 2a and 2b is a perspective view of the connecting piece and the coupling guide and the moving piece mounted with a coil,
3 is a longitudinal sectional view of a linear vibration motor according to the present invention;
4 is a view showing that the voltage frequency range that can drive the present invention as a result of the experiment is wider than the previous invention,
5 is an exploded perspective view of an application number "10-2009-0014657" filed by the inventor.

Hereinafter, with reference to the accompanying drawings will be described in detail the present invention.

The linear vibrating motor according to the present invention protrudes outwardly of the case 1 at one edge while being able to close one side of the open case 1 and one side of the open case 1 and an open side of the case 1. A bracket (5) with an extended piece (3), a magnet (7) attached to the inner top surface of the case (1) to generate a magnetic field having a fixed direction and strength, and inside the case (1) Mounted to face the magnet 7 generates a magnetic field of varying intensity and direction according to the electrical signal of a specific frequency transmitted from the outside, and then interacts with the magnetic field generated from the magnet 7 in the longitudinal direction of the case (1) It consists of a vibrating body (9) capable of vibrating.

In addition, the vibrating body 9 is inserted into the case 1 in a state where one side thereof faces the expansion piece 3, and the connecting piece 11 capable of receiving an electrical signal of a specific frequency transmitted from the outside. And, one side edge is connected to the connecting piece 11 can receive an electrical signal of a specific frequency transmitted from the connecting piece 11 and be moved in the longitudinal direction of the case 1 in a state fixed to the connecting piece (11) It is mounted on one side of the movable piece 13, the magnet 7 and the movable piece 13 facing the movable piece 13 and receives the external electric signal transmitted to the moving piece 13 via the connecting piece 11, and the strength and direction This variable magnetic field is generated and then interacts with the magnetic field of the magnet 7 to move together with the moving piece 13 in the longitudinal direction of the case 1, and the coil 15 of the coil 15. It is mounted on the outer circumference and together with the coil 15 The vibration coil 15 is moved in the longitudinal direction of the switch 1 to maximize the strength of vibration and the magnetic field generated from the magnet 7 and the coil 15 can be evenly spread within a specific section. The vibrating yoke 17 is mounted so as not to be biased in one direction from the inside of the case 1.

On the other hand, the coil 15 is preferably formed in a cylindrical shape with a line and the rear end is opened, the hollow inside, the magnet 7 is the outer diameter of the coil 15 so that it can be inserted into the inside of the coil 15 It is preferable that the cylindrical shape is made smaller than the inner diameter of.

In addition, the vibration yoke 17 is made of a ferromagnetic material so that the magnetic field generated from the magnet 7 and the coil 15 can pass smoothly, the vibration yoke 17 includes a conventional weight (weight) role. do.

In addition, while the vibration body 9 is interposed between the connecting piece 11 and the vibration yoke 17, both sides are coupled to one side of the bracket 5 and one side of the vibration yoke 17, and the moving piece ( The elastic member 21 having the through hole 31 through which the 13 is passed may be mounted to effectively transmit the vibration generated from the vibration yoke 17 coupled to the coil 15 to the outside.

In addition, it is preferable that the buffer plate 25 is mounted between the bracket 5 and the moving piece 13 so as to reduce contact noise generated between the moving piece 13 and the bracket 5.

On the other hand, between the connecting piece 11 and the moving piece 13, as shown in Figure 2a and 2b, the edge of the moving piece 13 from one end of the connecting piece 11 inserted into the inside of the case 1 While pivoting in the circumferential direction of the movable piece 13 with a predetermined gap therebetween, the connecting piece 27 is mounted so that the end thereof can be connected to the edge of the movable piece 13 so that the connecting piece 11 is an elastic member ( The movable piece 13 connected to the connecting piece 11 moves in the up and down direction of the case 1 through the through hole 31 of the elastic member 21 in a state in which it cannot be moved between the bracket 21 and the bracket 5. To be possible.

In addition, the connecting piece 11, the moving piece 13 and the connection guide 27 are provided with a positive pole printed circuit and a negative pole printed circuit so as to receive an electrical signal of a specific frequency input from the outside.

As shown in FIG. 1, the elastic member 21 has an annular ring-shaped outer plate 29 which can be fixed to one side of the bracket 5 with the connecting piece 11 interposed therebetween, and the outer plate ( The inner plate 33 having a through hole 31 smaller than the inner diameter of the outer plate 29 while being spaced apart by a predetermined distance in the height direction of the outer plate 29, and whose one side is coupled to one side of the vibration yoke 17. ).

In addition, while turning between the outer plate 29 and the inner plate 33 in the circumferential direction of the outer plate 29 or inner plate 33, both ends of the outer plate 29 and the inner plate 33. A connection bridge 35 that can be connected to is mounted to allow the inner plate 33 to contract or expand relative to the outer plate 29.

Referring to Figure 3 the process of operating the linear vibration motor according to the present invention having the structure as described above is as follows.

First, when an electrical signal having a specific frequency is input to the connecting piece 11 provided in the present invention, the coil 15 is connected to the connecting piece 11 and the moving guide 13 and the moving piece 13 of a specific frequency. Receive an electrical signal.

Meanwhile, the coil 15 receiving the electric signal of the specific frequency generates a magnetic field whose intensity and direction vary according to the electric signal of the specific frequency, and then interacts with the magnetic field generated from the magnet 7 to move the moving piece. Vibrates in the up and down directions of the case 1 together with the 13 and the vibration yoke 17.

At this time, the elastic member 21 may be transmitted to the outside by maximizing the vibration transmitted from the vibration yoke 17 and the coil 15 and the moving piece 13 in the up and down direction.

On the other hand, when comparing the characteristics of the present invention and the characteristics of the invention of the present invention compared to Table 1 as follows.

Inspection items A pre- filed invention Invention Remarks One Vibration 1.6g on average 1.7g on average level 2 noise 15dB average 10dB average 30% improvement 3 Current consumption 68 mA average 88 mA average 20mA rise 4 Aftershock 0.26 g on average 0.29g on average level 5 Rise time 39ms average 22ms average 48% improvement 6 Fall time 50ms average 25ms average 50% improvement 7 Overall distortion Average 12% Average 4% 67% improvement

As described in Table 1 above, the present invention is improved in noise and overall distortion rate than the previous invention.

In addition, it can be seen that the raising and lowering speed of the vibration yoke is higher than the previously claimed invention.

However, the current consumption is increased, as shown in Table 1, compared to the original invention.

In addition, as shown in FIG. 4, it can be seen that the voltage frequency band width that can drive the linear vibration motor is wider than that of the previously disclosed invention.

In addition, the present invention and the advantages and disadvantages of the present invention are shown in Table 2 as follows.

Item A pre- filed invention Invention One Set joint -Narrow voltage frequency characteristic range, not suitable for some models
-Set noise occurs due to high noise -Relatively wide voltage frequency range
-Significantly improved set joint phenomenon due to low noise 2 responsibility
(At the time of the drop test
Magnet
Breakaway) -The weight comes off the magnet as it comes into contact with the case
-The elastic member is damaged by the weight of the weight, which is disadvantageous for low frequency test. -Vibration yoke that functions as a weight is lightened so that it does not depart from the magnet
-Reduced elastic member damage due to light weighted vibration yoke, good for low frequency test 3 Frequency shift and vibration bottom during drop test -The weight deforms the elastic member, causing the vibration frequency to move, causing the vibration to occur. -Less damage of elastic member due to light weight vibration yoke
-Frequency shift and low vibration can be minimized 4 price -Expensive compared to general vibration motor -High price competitiveness 5 noise -High weight of weight and vibration width, high touch noise rejection rate -Minimize touch noise defect rate 6 Vibration force distribution -Large vibration distribution
-Due to the low vibration force distribution, certain quality can be expected

The linear vibration motor according to the present invention having such a structure generates a magnetic field having a fixed intensity and direction, and a coil 15 for generating a magnetic field whose intensity and direction are varied according to an electric signal of a specific frequency input from the outside. The electronic device and the like may be vibrated by using the magnet 7 and the vibration yoke 17 and the elastic member 21 capable of maximizing the vibration of the coil 15 moved up and down with respect to the magnet 7. Can be.

Therefore, the linear vibration motor according to the present invention has an advantage of semi-permanently preserving the life of the vibration motor by not using a brush and a commutator applied to the existing vibration motor.

1. Case 3. Extension
5. Bracket 7. Magnet
9. Vibrating body 11. Connecting piece
13. Moving piece 15. Coil
17. Vibration yoke 21. Elastic member
25. Shock absorber 27. Connection guide
29. Outer plate 31. Through hole
33. Inner plate 35. Connecting bridge

Claims (3)

A case 1 having one side open and an empty inside;
A bracket 5 capable of closing one side of the opened case 1 and having an extension piece 3 protruding outwardly of the case 1 at one edge thereof;
A magnet (7) attached to an inner top surface of the case (1) to generate a magnetic field having a fixed direction and intensity;
And a magnetic field mounted on the inner side of the case 1 to face the magnet 7 and varying in intensity and direction according to an electric signal of a specific frequency transmitted from the outside, and then mutually interacting with the magnetic field generated from the magnet 7. It is made of a vibrating body (9) which acts to vibrate in the longitudinal direction of the case (1),
The vibrating body 9 is inserted into the case 1 in a state where one side thereof faces the expansion piece 3, and a connection piece 11 capable of receiving an electrical signal of a specific frequency transmitted from the outside;
One side edge may be connected to the connecting piece 11 to receive an electrical signal of a specific frequency transmitted from the connecting piece 11 and may be moved in the longitudinal direction of the case 1 while being fixed to the connecting piece 11. Moving piece 13;
It is mounted on one side of the moving piece 13 facing the magnet 7 and receives an external electric signal transmitted to the moving piece 13 via the connecting piece 11 to generate a magnetic field of varying strength and direction. Coil 15 which can move in the longitudinal direction of the case 1 together with the moving piece 13 by interacting with the magnetic field of the magnet (7);
It is mounted on the outer circumferential surface of the coil 15 and at the same time moved in the longitudinal direction of the case 1 together with the coil 15 to maximize the strength of vibration and the magnetic field generated from the magnet 7 and the coil 15 is specified Vibration yoke 17 so that the vibrating coil 15 is not biased in one direction from the inside of the case (1) so that it can be evenly encased in the section;
And interposed between the connecting piece 11 and the vibration yoke 17, both sides are coupled to one side of the bracket (5) and one side of the vibration yoke 17 and through which the moving piece 13 can pass through the center. Equipped with a hole 31 is made of an elastic member 21 that can be transmitted to the outside by maximizing the vibration generated from the vibration yoke 17 coupled to the coil 15,
Between the connecting piece 11 and the moving piece 13, from the one end of the connecting piece 11 inserted into the inside of the case 1 with the edge of the moving piece 13 and a predetermined gap between the moving piece 13 While pivoting in the circumferential direction of (), the connecting guide 27 is mounted so that the end can be connected to the edge of the moving piece 13 so that the connecting piece 11 is interposed between the elastic member 21 and the bracket 5 and cannot move. In the state so that the moving piece 13 connected through the connecting piece 11 and the connecting guide 27 can be moved in the vertical direction of the case 1 through the through hole 31 of the elastic member 21,
The connecting piece 11, the moving piece 13 and the connection guide 27 are provided with a positive pole printed circuit and a negative pole printed circuit so as to receive an electrical signal of a specific frequency input from the outside.
A buffer plate 25 is mounted between the bracket 5 and the moving piece 13 to reduce contact noise generated between the moving piece 13 and the bracket 5.
The elastic member 21 has an outer ring 29 of the annular ring shape that can be fixed to one side of the bracket (5) sandwiching the connecting piece (11) therebetween;
While spaced apart a predetermined distance in the height direction of the outer plate 29, has a through hole 31 smaller than the inner diameter of the outer plate 29, one side may be coupled to one side of the vibration yoke 17 Inner plate 33;
And while turning in the circumferential direction of the outer plate 29 or inner plate 33 between the outer plate 29 and the inner plate 33, both ends of the outer plate 29 and the inner plate 33 The inner plate 33 is contracted or expanded relative to the outer plate 29 by having a connecting bridge 35 which can be connected,
The coil 15 has a cylindrical shape having a line and a rear end open and a hollow inside, and the magnet 7 has an outer diameter so that the inner diameter of the coil 15 can be inserted into the coil 15. A linear vibration motor comprising a smaller cylindrical shape.
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KR1020100070166A 2010-07-20 2010-07-20 Linear vibration motor KR101004134B1 (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101141625B1 (en) 2012-04-04 2012-05-17 주식회사 블루콤 Spicom composed of linear vibration motor and speaker
KR101272729B1 (en) * 2011-07-15 2013-06-10 크레신 주식회사 Linear vibration motor
KR101455722B1 (en) * 2013-08-19 2014-11-04 주식회사 오리엔텍 Vibration motor

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100923867B1 (en) * 2009-07-21 2009-10-28 김태진 Linear vibration motor

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100923867B1 (en) * 2009-07-21 2009-10-28 김태진 Linear vibration motor

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101272729B1 (en) * 2011-07-15 2013-06-10 크레신 주식회사 Linear vibration motor
KR101141625B1 (en) 2012-04-04 2012-05-17 주식회사 블루콤 Spicom composed of linear vibration motor and speaker
KR101455722B1 (en) * 2013-08-19 2014-11-04 주식회사 오리엔텍 Vibration motor

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