KR20130015344A - Linear vibration motor - Google Patents

Linear vibration motor Download PDF

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Publication number
KR20130015344A
KR20130015344A KR1020110077284A KR20110077284A KR20130015344A KR 20130015344 A KR20130015344 A KR 20130015344A KR 1020110077284 A KR1020110077284 A KR 1020110077284A KR 20110077284 A KR20110077284 A KR 20110077284A KR 20130015344 A KR20130015344 A KR 20130015344A
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KR
South Korea
Prior art keywords
coupled
vibrator
magnet
hollow hole
linear vibration
Prior art date
Application number
KR1020110077284A
Other languages
Korean (ko)
Inventor
전재우
Original Assignee
삼성전기주식회사
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 삼성전기주식회사 filed Critical 삼성전기주식회사
Priority to KR1020110077284A priority Critical patent/KR20130015344A/en
Publication of KR20130015344A publication Critical patent/KR20130015344A/en

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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
    • H02K1/34—Reciprocating, oscillating or vibrating parts of the magnetic circuit
    • 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
    • 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
    • H02K7/06—Means for converting reciprocating motion into rotary motion or vice versa
    • H02K7/065—Electromechanical oscillators; Vibrating magnetic drives
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K2211/00—Specific aspects not provided for in the other groups of this subclass relating to measuring or protective devices or electric components
    • H02K2211/03—Machines characterised by circuit boards, e.g. pcb

Abstract

PURPOSE: A linear vibrating motor is provided to implement various vibration forces by including a plurality of elastic members with different spring constants. CONSTITUTION: A hollow hole is formed in a vibrator part. The vibrator part includes a coil. A stator(100) includes an inner space for linear vibration. A magnet part(130) is combined with the stator to pass through the hollow hole. A first elastic member(210) elastically supports the linear vibration motion of the vibrator part.

Description

Linear vibration motor

The present invention relates to a linear vibration motor.

A general vibration motor is a component that converts electrical energy into mechanical vibration by using an electromagnetic force generation principle, and is mounted on an electronic device such as a mobile communication or a portable terminal and a game machine to be used for notification of silent reception.

Linear vibration motors are generally used as the vibration motors currently used, and the linear vibration motors are generally located at the corners of the device to generate vibrations in a direction perpendicular to the object receiving the vibrations.

As shown in FIG. 1, the linear vibration motor includes a single elastic member 25 coupled to the stator part 10, the vibrator part 20, and the stator part 10 to elastically support the vibrator part 20. Include.

In addition, the stator 10 includes a bracket 11, a coil 12, a printed circuit board 13, and a case 14, and the vibrator 20 includes the yoke 21, the weight 22, Magnet 23, plate yoke 24.

Accordingly, since the general linear vibration motor uses one elastic member 25 to elastically support the vibrator portion 20, the user always feels constant vibration.

On the other hand, since the conventional linear vibration motor does not provide a variety of vibration force, there is a problem to be used in an electronic device for transmitting a three-dimensional touch and response by transmitting a variety of vibration force to the user.

The present invention was created to solve the problems of the prior art as described above, an object of the present invention is to provide a linear vibration motor including a plurality of elastic members for elastically supporting the linear vibration movement of the vibrator portion.

The linear vibration motor according to the embodiment of the present invention has a hollow hole, a vibrator portion including a coil, a stator portion having an internal space formed so that the vibrator portion linearly vibrates therein, The magnet part coupled to the stator part, the upper end is coupled to the inner upper surface of the stator portion, the lower end is coupled to the upper portion of the vibrator portion and the first elastic member and one end elastically supporting the linear vibration movement of the vibrator portion It is coupled to the inner bottom surface of the stator portion, the other end is characterized in that it comprises a printed circuit board coupled to the vibrator portion.

In addition, the vibrator portion is coupled to the lower end of the first elastic member, the cover portion having a hollow hole to penetrate the magnet portion, the vibrator and upper portion accommodated in the inner space of the cover portion to enable linear vibration movement along the outer peripheral surface of the magnet portion The end is coupled to the cover portion, the lower end further comprises a second elastic member coupled to the vibrator to elastically support the linear vibration movement of the vibrator, the coil accommodates the magnet portion therein and the outer peripheral surface of the magnet portion It is characterized in that it is movable linearly.

In addition, the cover upper portion is coupled to the lower end of the first elastic member, the inner upper portion is coupled to the upper end of the second elastic member, the inner case and the inner space in which the hollow hole through which the magnet portion is formed are formed It characterized in that it comprises an inner bracket which is coupled to the lower portion of the inner case as possible.

In addition, the inner bracket is formed at a position spaced apart from the hollow hole so that the hollow hole is formed at a position corresponding to the hollow hole formed in the inner case, and the other end of the printed circuit board is penetrated to be coupled to the vibrator portion. Characterized in that the through-hole is formed.

In addition, the vibrator is coupled to the outer peripheral surface of the coil, a cylindrical yoke coupled to the lower end of the second elastic member and a hollow hole for receiving the cylindrical yoke and the coil is formed on the weight coupled to the outer peripheral surface of the cylindrical yoke It includes a sieve, characterized in that the coil is coupled to the other end of the printed circuit board.

In addition, the second elastic member is characterized in that the hollow portion is formed larger than the outer diameter of the magnet portion to linearly move along the outer circumferential surface of the magnet portion as the elastic support of the linear vibration of the vibrator.

In addition, the second elastic member is characterized in that it has a spring constant value different from the spring constant value of the first elastic member.

The stator unit may include an inner space for accommodating the vibrator unit, coupled to a case covering the vibrator unit from the outside, and a bracket coupled to a lower portion of the case and coupled to one end of the printed circuit board at an upper portion thereof. The part passes through the hollow hole of the vibrator part, and one end is coupled to the inner top surface of the bracket, and the other end is coupled to the inner top surface of the case.

In addition, the magnet portion is coupled to the inner upper surface of the bracket, is coupled to the inner upper surface of the case to face the first magnet and the first magnet passing through the hollow hole of the vibrator portion, the hollow of the vibrator portion And a second magnet penetrating the hole.

The magnet may further include a plate yoke having an upper portion coupled with the first magnet and a lower portion coupled with the second magnet to integrally connect the first magnet and the second magnet.

The printed circuit board may include a coupling plate fixed and coupled to the stator part, an elastic part extending from the coupling plate to extend in a spiral direction to have an elastic force, and provided at one end of the elastic part and coupled to the vibrator part. It characterized in that it comprises a contact for applying an external power source to the vibrator.

The stator part may further include a damper coupled to the bracket so as to face the lower part of the vibrator part to prevent noise and impact when contacting the vibrator part.

Linear vibration motor according to an embodiment of the present invention by providing a plurality of elastic members having different spring constant value, there is an effect of providing a variety of vibration force than the conventional linear vibration motor.

In addition, since the linear vibration motor according to the embodiment of the present invention can provide a variety of vibration force, the user can feel a three-dimensional vibration tactile.

1 is a cross-sectional view of a linear vibration motor according to the conventional invention.
2 is a cross-sectional view of a linear vibration motor according to an embodiment of the present invention.
3 is an exploded perspective view of the linear vibration motor shown in FIG.
Figure 4 is an exploded perspective view of the vibrator portion constituting the linear vibration motor shown in FIG.
Figure 5 is a schematic coupling perspective view showing the inside of the linear vibration motor shown in FIG.

BRIEF DESCRIPTION OF THE DRAWINGS The objects, particular advantages and novel features of the present invention will become more apparent from the following detailed description taken in conjunction with the accompanying drawings, in which: FIG. 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. Also, the terms first, second, etc. may be used to describe various components, but the components should not be limited by the terms. The terms are used only for the purpose of distinguishing one component from another. In the following description, well-known functions or constructions are not described in detail since they would obscure the invention in unnecessary detail.

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

2 is a cross-sectional view of a linear vibration motor according to an embodiment of the present invention, Figure 3 is an exploded perspective view of the linear vibration motor shown in Figure 2, Figure 4 is a vibrator portion constituting the linear vibration motor shown in FIG. Figure 5 is an exploded perspective view, Figure 5 is a schematic coupling perspective view showing the inside of the linear vibration motor shown in FIG.

As shown, the linear vibration motor according to the embodiment of the present invention includes a stator part 100, a vibrator part 200, a magnet part 130, a first elastic member 210, and a printed circuit board 220. .

 As shown in FIGS. 3 and 4, the vibrator part 200 includes a cover part 230, a vibrator 240, and a second elastic member 250.

More specifically, the cover part 230 includes an inner case 231 and an inner bracket 235.

In addition, the inner case 231 has a lower end 212 of the first elastic member 210 is coupled to the outer upper portion and the upper end 251 of the second elastic member 250 is coupled to the inner upper portion. .

In addition, a hollow hole 232 through which the magnet part 130 penetrates is formed in a central portion of the inner case 231.

In addition, the inner bracket 235 is coupled to the lower portion of the inner case 231.

More specifically, the inner bracket 235 is formed with a hollow hole 236 at a position corresponding to the hollow hole 232 formed in the inner case 231.

A through hole 237 through which a portion of the printed circuit board 220 penetrates is formed at a position spaced apart from the hollow hole 236 by a predetermined distance.

As shown in FIG. 4, the vibrator 240 includes a coil 241, a cylindrical yoke 242, and a weight 243.

In addition, the coil 241 accommodates the magnet part 130 to be inserted into the hollow hole h1.

Accordingly, the coil 241 is formed to have an inner diameter larger than the outer diameter of the magnet part 130 so as to linearly move along the outer circumferential surface of the magnet part 130 to have an annular shape having the hollow hole h1. It is preferable that it is formed in a shape.

The coil 241 is coupled to the other end of the printed circuit board 220 to receive power from the outside.

The cylindrical yoke 242 is coupled to the outer circumferential surface of the coil 241 and the lower end 252 of the second elastic member 250 is coupled to the upper portion.

In addition, the cylindrical yoke 242 has a hollow hole (h2) corresponding to the hollow hole (h1) of the coil 241 is formed to accommodate the magnet portion 130 to be inserted into the hollow hole (h2). .

The weight 243 is formed with a hollow hole (h3) for receiving the cylindrical yoke 242 integrally coupled to the coil 241 is coupled to the outer peripheral surface of the cylindrical yoke (242).

Thus, the coil 241 constituting the vibrator 240, the cylindrical yoke 242 and the weight 243 is a hollow hole (h1, h2, h3) for accommodating the magnet portion 130 therein Each of which is formed to move linearly along the outer circumferential surface of the magnet portion 130 in the longitudinal direction.

As shown in FIG. 4, the second elastic member 250 has an upper end 251 coupled to the cover portion 230, and a lower end 252 coupled to the vibrator 240 to allow the vibrator ( Elastic support of the linear vibration movement of 240).

More specifically, the upper end 251 of the second elastic member 250 is coupled to the inner upper surface of the inner case 231, the lower end 252 is coupled to the upper portion of the cylindrical yoke 242 The oscillator 240 elastically supports.

In addition, the second elastic member 250 has a hollow portion 253 having an inner diameter larger than the outer diameter of the magnet 130.

Accordingly, the second elastic member 250 is linearly moved along the outer circumferential surface of the magnet part 130 as the second elastic member 250 elastically supports the linear vibration movement of the vibrator 240.

As shown, the stator part 100 includes a case 110 and a bracket 120.

More specifically, it is preferable that the case 110 has an internal space formed such that the vibrator portion 200 vibrates linearly therein.

In addition, the bracket 120 is disposed below the case 110 to partition the internal space to form the internal space.

In addition, one end of the printed circuit board 220 is coupled to the upper portion of the bracket 120.

The magnet 130 is coupled to the inner upper surface of the bracket 120 and the other end is coupled to the inner upper surface of the case 110 so as to pass through the hollow hole of the vibrator portion 200.

In addition, the magnet part 130 may be composed of one magnet or a plurality of magnets connected integrally from the inner upper surface of the bracket 120 to the inner upper surface of the case 110.

Therefore, in the embodiment of the present invention, as shown in the drawing, the magnet part 130 includes a plurality of magnets, a first magnet 131 and a second magnet 132.

More specifically, the first magnet 131 is coupled to the inner upper surface 121 of the bracket 120.

2 and 5, the first magnet 131 is formed in the hollow hole 236 and the vibrator 240 of the inner bracket 235 constituting the vibrator portion 200. It goes through the hollow hole.

In addition, the second magnet 132 is coupled to the inner upper surface of the case 110.

The second magnet 132 includes a hollow hole 232 formed in the hollow hole 213 of the first elastic member 210, the inner case 231 constituting the vibrator part 200, and It passes through the hollow hole 253 of the elastic member 250 and the hollow hole of the vibrator 240.

In addition, the plate yoke 133 is coupled between the first magnet 131 and the second magnet 132 to integrally connect the first magnet 131 and the second magnet 132.

Accordingly, the magnet part 130 formed by integrally connecting the first magnet 131 and the second magnet 132 has the first elastic member 210, the cover part 230, and the vibrator 240. Through it is located between the bracket 120 and the case 110.

As shown in FIG. 2, the first elastic member 210 has an upper end 211 coupled to an inner upper surface of the case 110, and a lower end 212 constitutes the vibrator 200. It is coupled to an outer upper surface of the inner case 231.

In addition, the first elastic member 210 has a hollow hole 213 having an inner diameter larger than the outer diameter of the first magnet 131 and the second magnet 132 constituting the magnet portion 130.

Accordingly, since the first elastic member 210 may be moved up and down along the outer circumferential surface of the magnet part 130, the first elastic member 210 may elastically support the linear vibration motion of the vibrator part 200.

2 and 5, one end of the printed circuit board 220 is coupled to an inner bottom surface of the stator part 100, and the other end thereof is coupled to the vibrator part 200.

More specifically, the printed circuit board 220 is made of a coupling plate 221, elastic portion 222 and the contact portion 223, the printed circuit board 220 according to an embodiment of the present invention is made of FPC It is preferable.

The coupling plate 221 is fixedly coupled to an upper surface of the bracket 120 constituting the stator part 100.

In addition, the elastic portion 222 extends upward from the coupling plate 221 to extend in a spiral direction to have an elastic force.

More specifically, the inner diameter of the elastic portion 222 extending in the spiral direction is preferably formed larger than the outer diameter of the magnet portion 130.

The contact portion 223 is provided at one end of the elastic portion 222 and is coupled to a lower portion of the coil 241 constituting the vibrator portion 200 to apply external power to the coil 241. .

Also, as shown in FIGS. 2 and 5, the printed circuit board 220 extends along a circumferential direction of the magnet part 130 without being in contact with the outer circumferential surface of the magnet part 130. Coupled with the coil 241.

Accordingly, the printed circuit board 220 may be deformed up and down according to the linear vibration movement of the vibrator portion 200.

In addition, since the inner diameter of the printed circuit board 220 is larger than the outer diameter of the magnet part 130, contact with the magnet part 130 may be prevented when deformation in the vertical direction.

The driving of the linear vibration motor according to the embodiment of the present invention is as follows.

As shown in FIG. 5, power is first applied to the coupling plate 221 of the printed circuit board 220 which is coupled to an upper portion of the bracket 120 and connected to an external set component.

Accordingly, power is applied to the coil 241 connected to the contact portion 223 of the printed circuit board 220 to induce a magnetic field in the coil 241.

Electromagnetic force is generated in the magnet part 130 and the coil 241 which pass through the vibrator part 200 and are coupled to the case 110 and the bracket 120.

Thereafter, the vibrator 240 including the coil 241 and the weight body 243 linearly moves up and down along the outer circumferential surface of the magnet part 130 to generate vibration, and the second elasticity The member 250 elastically supports the vibrator 240 which linearly vibrates.

In addition, the first elastic member 210 may elastically support the vibrator portion 200 that is already linearly vibrated.

That is, in the exemplary embodiment of the present invention, the vibrator portion 200 which is linearly vibrated by the second elastic member 250 having a predetermined spring constant value is mutually different from the spring constant value of the second elastic member 250. Since the first elastic member 210 having the different spring constant value is elastically supported again, the vibration force is variously changed by the difference of the different spring constant values.

Although the present invention has been described in detail through specific embodiments, this is for explaining the present invention in detail, and the linear vibration motor according to the present invention is not limited thereto, and the general knowledge in the art within the technical spirit of the present invention. It is obvious that modifications and improvements are possible by those who have them.

It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

100: stator part 110: case
120: bracket 130: magnet
200: vibrator portion 210: the first elastic sub-cap
220: printed circuit board 230: cover
240: oscillator 250: second elastic member
h1, h2, h3: hollow hole

Claims (12)

A hollow hole is formed, the vibrator portion including a coil;
A stator portion in which an inner space is formed such that the vibrator portion linearly vibrates therein;
A magnet part coupled to the stator part to penetrate the hollow hole of the vibrator part;
An upper end coupled to an inner upper surface of the stator portion, and a lower end coupled to an upper side of the vibrator portion to elastically support linear vibration movement of the vibrator portion; And
One end is coupled to the inner bottom surface of the stator portion, the other end is a linear vibration motor comprising a printed circuit board coupled to the vibrator portion.
The method according to claim 1,
The vibrator portion
A cover part coupled to a lower end of the first elastic member and having a hollow hole through which the magnet part passes;
A vibrator accommodated in an inner space of the cover part to enable linear vibration movement along the outer circumferential surface of the magnet part; And
The upper end is coupled to the cover portion, the lower end further comprises a second elastic member coupled to the vibrator for elastically supporting the linear vibration movement of the vibrator,
The coil is a linear vibration motor, characterized in that the magnet part accommodates therein and is linearly movable along the outer circumferential surface of the magnet part.
The method according to claim 2,
The cover
An inner upper portion coupled to a lower end of the first elastic member, an inner upper portion coupled to an upper end of the second elastic member, and an inner case having the hollow hole through which the magnet part passes; And
Linear vibration motor comprising an inner bracket coupled to the lower portion of the inner case to form an inner space.
The method according to claim 3,
The inner bracket
The hollow hole is formed at a position corresponding to the hollow hole formed in the inner case, and the through hole is formed at a position spaced apart from the hollow hole so that the other end of the printed circuit board is penetrated to be coupled to the vibrator portion. Linear vibration motor characterized by. The method according to claim 2,
The vibrator
A cylindrical yoke coupled to an outer circumferential surface of the coil and coupled to a lower end of the second elastic member at an upper portion thereof; And
A hollow hole is formed to accommodate the cylindrical yoke and coil, and includes a weight body coupled to an outer circumferential surface of the cylindrical yoke.
The coil is a linear vibration motor, characterized in that coupled to the other end of the printed circuit board.
The method according to claim 2,
The second elastic member
And a hollow part formed larger than an outer diameter of the magnet part to linearly move along the outer circumferential surface of the magnet part by elastically supporting the linear vibration motion of the vibrator.
The method according to claim 2,
The second elastic member
And a spring constant value different from the spring constant value of the first elastic member.
The method according to claim 1,
The stator section
An inner space formed to receive the vibrator part to cover the vibrator part from the outside; And
A bracket coupled to a lower portion of the case and coupled to one end of the printed circuit board at an upper portion thereof;
The magnet part passes through the hollow hole of the vibrator part, one end is coupled to the inner upper surface of the bracket and the other end is coupled to the inner upper surface of the case.
The method according to claim 8,
The magnet part
A first magnet coupled to an inner upper surface of the bracket and penetrating the hollow hole of the vibrator part; And
And a second magnet coupled to an inner upper surface of the case so as to face the first magnet and penetrating the hollow hole of the vibrator part.
The method according to claim 9,
The magnet part
The upper portion is coupled to the first magnet, the lower portion is coupled to the linear magnet between the second yoke further comprises a plate yoke for integrally connecting the first magnet and the second magnet.
The method according to claim 1,
The printed circuit board
A coupling plate fixed and coupled to the stator portion;
An elastic portion extending from the coupling plate and extending in a helical direction to have an elastic force; And
And a contact portion provided at one end of the elastic portion and coupled to the vibrator portion to apply external power to the vibrator portion.
The method according to claim 8,
The stator section
And a damper coupled to the bracket so as to face the lower portion of the vibrator to prevent noise and impact when contacting the vibrator.
KR1020110077284A 2011-08-03 2011-08-03 Linear vibration motor KR20130015344A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020110077284A KR20130015344A (en) 2011-08-03 2011-08-03 Linear vibration motor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020110077284A KR20130015344A (en) 2011-08-03 2011-08-03 Linear vibration motor

Publications (1)

Publication Number Publication Date
KR20130015344A true KR20130015344A (en) 2013-02-14

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Application Number Title Priority Date Filing Date
KR1020110077284A KR20130015344A (en) 2011-08-03 2011-08-03 Linear vibration motor

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015115755A1 (en) * 2014-02-03 2015-08-06 (주)파트론 Linear vibration motor and method for manufacturing same
KR101653796B1 (en) * 2015-05-29 2016-09-05 주식회사 오리엔텍 Vibration Motor of Intermediate Connecting member of Modified Shape
CN112260507A (en) * 2020-03-31 2021-01-22 威海永柏微电机有限公司 Vertical vibrator using upper and lower permanent magnets

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015115755A1 (en) * 2014-02-03 2015-08-06 (주)파트론 Linear vibration motor and method for manufacturing same
KR101653796B1 (en) * 2015-05-29 2016-09-05 주식회사 오리엔텍 Vibration Motor of Intermediate Connecting member of Modified Shape
CN112260507A (en) * 2020-03-31 2021-01-22 威海永柏微电机有限公司 Vertical vibrator using upper and lower permanent magnets
CN112260507B (en) * 2020-03-31 2022-08-19 威海永柏微电机有限公司 Vertical vibrator using upper and lower permanent magnets

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