KR20110088985A - Apparatus for generating vibration - Google Patents

Apparatus for generating vibration Download PDF

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Publication number
KR20110088985A
KR20110088985A KR1020100008758A KR20100008758A KR20110088985A KR 20110088985 A KR20110088985 A KR 20110088985A KR 1020100008758 A KR1020100008758 A KR 1020100008758A KR 20100008758 A KR20100008758 A KR 20100008758A KR 20110088985 A KR20110088985 A KR 20110088985A
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KR
South Korea
Prior art keywords
case
movable body
moving
yoke
elastic
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Application number
KR1020100008758A
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Korean (ko)
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KR101152417B1 (en
Inventor
유근수
Original Assignee
인창전자주식회사
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Priority to KR1020100008758A priority Critical patent/KR101152417B1/en
Publication of KR20110088985A publication Critical patent/KR20110088985A/en
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Publication of KR101152417B1 publication Critical patent/KR101152417B1/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
    • H02K1/17—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
    • 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
    • H02K33/12—Motors with reciprocating, oscillating or vibrating magnet, armature or coil system with armatures moving in alternate directions by alternate energisation of two coil systems
    • H02K33/14—Motors with reciprocating, oscillating or vibrating magnet, armature or coil system with armatures moving in alternate directions by alternate energisation of two coil systems wherein the alternate energisation and de-energisation of the two coil systems are effected or controlled by movement of the armatures
    • 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
    • H02K33/18—Motors with reciprocating, oscillating or vibrating magnet, armature or coil system with coil systems moving upon intermittent or reversed energisation thereof by interaction with a fixed field system, e.g. permanent magnets

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Reciprocating, Oscillating Or Vibrating Motors (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Mechanical Engineering (AREA)

Abstract

The present invention provides a vibration generating device. The vacuum generating device has a predetermined length, and the case is formed with a distribution hole for exposing the inside; A moving part disposed in the case so as to be movable along the longitudinal direction of the case and having a magnet at one end thereof; A pair of elastic parts disposed inside the case to elastically support both ends of the moving part; And installed inside the case so as to be located on one end of the moving portion, has a predetermined internal space that can surround the outer periphery of the magnet, and receives a current from the outside for generating an electromagnetic force to the moving portion It includes a current applying unit. Accordingly, the present invention can generate vibration in a state of elastically supporting both ends of the movable body while moving along the straight line, which is a weight within the case.

Description

Vibration generating device {APPARATUS FOR GENERATING VIBRATION}

The present invention relates to a vibration generating device, and more particularly, to move a weight along a straight line in a case having a predetermined length as a current flows in a magnetic field, and to perform vibration in a state in which both ends of the weight are elastically supported. It relates to a vibration generating device that can be generated.

In general, one of the essential functions of a portable communication device such as a mobile phone is the incoming call function, and the widely used type of the incoming call function is to use a voice such as a melody or a ringing tone, and the other to force the device to shake. This function uses vibration.

Among these types of incoming calls, voice functions such as melody and bell are mainly used to detect incoming calls by transmitting various types of melodies or bells pre-input to the outside through small speakers.

In addition, the function using the vibration is generally to enable the device to vibrate by driving a small vibration motor to transmit the vibration force to the case of the device.

Here, the vibration function used in the prior art is operated by a vibration motor mounted separately in the device, the most typical of such a vibration motor is a coin type vibration motor (coin type) having a larger diameter than the thickness, and It is roughly classified into a bar type vibration motor with a weight attached to the shaft protruding to the outside, and among these motors, the bar type vibration motor has excellent vibration characteristics compared to the coin type vibration motor, and thus, most mobile communication It is adopted in a terminal.

The bar-type vibration motor is divided into a cored motor and a coreless motor according to the presence or absence of a core, and is generally a cylindrical type that accommodates them using a stator and a rotor as basic components. By including a case and a weight coupled to one end of the shaft, which is one component of the rotor, the weight is eccentrically moved in accordance with the rotation of the shaft to generate vibration. This vibration motor is the same as the configuration of a conventional motor except the weight portion.

However, in the bar type vibration motor, the weight, which is a weight coupled to one end of the shaft, generates vibrations according to the rotation of the shaft, so that the shaft of the shaft is finely twisted after the vibration function is continuously used for a certain period of time. . Accordingly, there is a problem in that vibration is not generated uniformly at one end of the shaft.

An object of the present invention is a vibration that can stably generate vibration in a state in which elastically supporting both ends of the movable body while moving along a straight line the weight of the movable body in the case having a certain length as the current flows in the magnetic field In providing a generator.

Another object of the present invention is to provide a vibration generating device that can guide a moving line of the moving body to form a straight line by installing a moving body on the axis of a predetermined length.

It is still another object of the present invention to provide a vibration generating device capable of generating uniform vibration by reciprocating a moving body with a uniform electromagnetic force by forming an inner diameter of a coil surrounding the magnet and a cross-sectional area of the magnet proportional to each other. .

In a preferred aspect, the present invention provides a vibration generating device.

The vacuum generating device has a predetermined length, and the case is formed with a distribution hole for exposing the inside; A moving part disposed in the case so as to be movable along the longitudinal direction of the case and having a magnet at one end thereof; A pair of elastic parts disposed inside the case to elastically support both ends of the moving part; And installed inside the case so as to be located on one end of the moving portion, has a predetermined internal space that can surround the outer periphery of the magnet, and receives a current from the outside for generating an electromagnetic force to the moving portion It includes a current applying unit.

Here, the moving part includes a movable body having the predetermined length, a yoke that is fastened to one end of the movable body, the outer circumference protrudes a predetermined length, and the magnet fixed to an inner central portion of the yoke so as to be positioned inside the yoke. It is preferable.

In addition, it is preferable that the other end of the movable body is provided with a support groove in which one end of the pair of elastic bodies provided on the other end side of the movable body is in contact with and supported.

In addition, the support groove may be formed in any one of the other end central portion of the movable body, and the other end outer peripheral portion of the movable body.

In addition, the outer circumference of both ends of the movable body is preferably formed in a curved shape to form a predetermined curvature.

In addition, the inside of the case is further provided with a moving shaft connecting the inner end and the other end of the case, the moving body is formed in the center hole to be movable by being fitted to the moving shaft, the moving body and the moving body It is preferable to provide bearings rolling with each other.

In addition, the outer circumference of the yoke protrudes side by side along the outer circumference of the movable body, a support plate is further fixedly installed at an end of the magnet, and the other one of the pair of elastic bodies positioned at one end of the movable body is connected to the support plate. It is preferable that the other ends of the case elastically support each other, but the other one of the pair of elastic bodies is disposed in an inner space of the current applying unit.

Here, the outer circumference of the yoke is located inside the outer circumference of the movable body and protrudes, and the other one of the pair of elastic bodies located at one end of the movable body elastically supports the outer circumferential end of the yoke and the inner other end of the case. However, the other of the pair of elastic bodies may be disposed on the outer circumferential side of the current applying unit.

In addition, the current applying unit is made of a coil having a predetermined inner diameter, it is preferable that the inner diameter of the current applying unit and the cross-sectional area of the magnet has a proportional relationship with each other. Accordingly, it is possible to generate a uniform electromagnetic force at a constant electrical rating.

Here, instead of reducing the size of the vibrator by reducing the cross-sectional area of the magnet and the inner diameter of the coil, it is possible to compensate the electromagnetic field size by increasing the height of the coil to a certain height.

The present invention has the effect of stably generating vibration in a state in which elastically supporting both ends of the movable body while moving along the straight line the weight of the movable body in the case having a certain length by the electromagnetic force.

In addition, the present invention has the effect of guiding the moving line of the moving body to form a straight line by installing a moving body on the axis of a certain length.

In addition, the present invention by forming the inner diameter of the coil surrounding the magnet and the cross-sectional area of the magnet to be proportional to each other, has the effect of generating a uniform vibration by reciprocating the moving body with a uniform electromagnetic force.

1 is a cross-sectional view showing a first embodiment of a vibration generating device of the present invention.
2 is a cross-sectional view showing a vibration generating device including another embodiment of the moving body of FIG.
3 is a cross-sectional view showing a second embodiment of the vibration generating device of the present invention.
4 is a cross-sectional view showing a vibration generating device including another embodiment of the movable body of FIG. 3.
5 is a cross-sectional view showing a third embodiment of the vibration generating device of the present invention.
6 is a cross-sectional view showing a vibration generating device including another embodiment of the movable body of FIG. 5.
7 is a sectional view showing a fourth embodiment of the vibration generating device of the present invention.
8 is a cross-sectional view showing a vibration generating device including another embodiment of the movable body of FIG. 7.

Hereinafter, with reference to the accompanying drawings to describe the vibration generating device of the present invention.

[First Embodiment] A Moving Part of a First Solid Type

1 is a cross-sectional view showing a first embodiment of a vibration generating device of the present invention. 2 is a cross-sectional view showing a vibration generating device including another embodiment of the moving body of FIG.

Referring to FIG. 1, a vacuum generating apparatus according to a first embodiment of the present invention includes a case 100 having a large space therein, and a moving part 200 that is movably installed in the case 100. The current applying unit 400 provides an electromagnetic force capable of moving the moving unit 200.

The above configurations will be described in detail.

The case 100 forms a cylindrical shape having a predetermined inner diameter and is formed to have a predetermined length. And, one end of the case 100 is provided with a base 120 that can act as a cap, the other end of the case 100 is a distribution hole that can expose the internal space of the case 100 to the outside 110 is formed. Here, the distribution holes 110 may be formed in one or a plurality, the size and number of the distribution holes 110 may be formed in proportion to the space volume of the internal space of the case 100. In addition, the distribution hole 110 is moved so that the pressure generated in the inner space of the case 100 is easily discharged to the outside when the moving unit 200 described below moves inside the case 100. It may have a role to facilitate the movement of the unit 200.

[Moving part]; Solid type

The moving part 200 is disposed in the inner space of the case 100 and the movable body 210 having a predetermined length and the yoke 300 is fastened to one end of the movable body 210 and the outer circumference protrudes a predetermined length And a magnet 220 fixed to an inner central portion of the yoke 300 so as to be positioned inside the yoke 300.

Here, the movable body 210 may be formed in a cylindrical shape and form an outer diameter smaller than the inner diameter of the case 100 so as to be movable in the inner space of the case 100. Therefore, a predetermined gap is formed between the outer circumference of the movable body 210 and the inner circumference of the case 100.

Then, at one end of the movable body 210, a yoke fitting groove 212 which is dug in a predetermined depth is formed. Therefore, the end of the yoke 300 is fitted and fixed to the yoke fitting groove 212.

The yoke 300 extends along one end surface of the movable body 210 from the outer circumference of the head body 310 and the outer body of the yoke fitting groove 212 and at the end of the movable body ( The bending body 320 is bent to protrude a predetermined length along a direction parallel to the outer circumference of the 210. In addition, a predetermined space is formed inside the yoke 300, and in particular, a magnetic fitting groove 310a is formed inside the head body 310.

Accordingly, the yoke 300 may be fixed by being inserted into the yoke fitting groove 212 in which the head body 310 is formed at one end of the movable body 210.

In addition, the magnetic 220 according to the present invention may be inserted into and fixed in the magnetic fitting groove 310a formed at the inner side of the head body 310. Here, the magnetic 220 is made of a cylindrical solid and has a predetermined cross-sectional area. This cross-sectional area is determined in proportion to the inner diameter of the current applying unit 400 described below. Conversely, the inner diameter of the current applying unit 400 may be determined in proportion to the inner diameter of the magnetic 220.

That is, the size of the electromagnetic field may be compensated by increasing the height of the coil 400 instead of reducing the diameter of the vibrator by reducing the cross-sectional area of the magnet 220 and the radius of the coil 400.

In general, since the magnetic field of the electromagnet has a greater influence on the electromagnetic force generated by the vibrator than the magnetic field of the permanent magnet, the design of the long coil 400 having a small inner diameter and a predetermined height may be advantageous for forming the electromagnetic field of the vibrator.

A support plate 230 is installed at one end of the magnetic 220 that is fitted and fixed to the magnetic fitting groove 310a as described above. The support plate 230 may be adhesively fixed to one end of the magnetic 220 through an adhesive or the like.

On the other hand, the other end of the movable body 210 may be formed with a support groove 211 having a predetermined depth, the support groove 211 may be formed to be located inside the other end of the movable body (210).

In addition, one end and the other end of the movable body 210 may be formed in a curved shape having a predetermined curvature. This may serve to reduce contact resistance with the inner circumference of the case 100 generated while the moving body 210 moves inside the case 100.

Therefore, the moving unit 200 according to the present invention may be configured as described above.

[Pair of elastomers]

Both ends of the moving part 200 configured as described above may be elastically supported by a pair of elastic bodies 510 and 520 such as coil-shaped elastic springs installed at one end side and the other end side of the case 100.

The pair of elastic bodies 510 and 520 may include a first elastic body 510 disposed at an inner end side of the case 100 and a second elastic body 520 disposed at the other end side of the case 100.

One end of the first elastic body 510 is elastically supported on one surface of the support plate 230 provided at the end of the magnet 220, and the other end is elastically supported on the inner peripheral surface of one end of the case 100.

One end of the second elastic body 520 is elastically supported by the support groove 211, and the other end thereof is elastically supported by the inner peripheral surface of the other end of the case 100.

Here, the first elastic body 510 and the second elastic body 520 may have a coil shape, have the same inner diameter, and may have the same elastic modulus.

In addition, a current applying unit 400, which is a coil according to the present invention, is positioned on an outer circumference of the first elastic body 510. Therefore, the current applying unit 400 is disposed to surround the outer circumference of the first elastic body 510.

Here, the inner diameter of the current applying unit 400 is preferably formed in proportion to the cross-sectional area of the magnet 220.

Meanwhile, a flexible circuit board 600 for transmitting an electrical signal to the current applying unit 400 may be disposed on one inner side surface of the case 100.

In addition, the current applying unit 400 may be included in the internal space of the bending body 320 of the yoke 300 mentioned above.

Therefore, when the current applying unit 400 receives an electrical signal from the outside, the current applying unit 400 generates a current, thereby generating an electromagnetic force capable of moving the moving body 210 in one direction. .

In addition, since both ends of the movable body 210 moved by such a force are elastically supported by the first and second elastic bodies 510 and 520, a predetermined elastic flow up and down may be realized.

[Another Example of Modification of Moving Body]

Meanwhile, referring to FIG. 2, the support groove 211 ′ is formed in the movable body 210 according to the present invention, and the support groove 211 ′ may be formed at the outer circumference of the other end of the movable body 210. In this case, the second elastic body 521 supported by the support groove 211 ′ may be formed to a predetermined size than the inner diameter of the first elastic body 510. Here, the elastic modulus of the first and second elastic bodies 510 and 521 may be formed differently.

Preferably, the elastic modulus of the second elastic body 521 is preferably smaller than the elastic modulus of the first elastic body 510. Therefore, the elastic modulus of the first and second elastic bodies 510 and 521 may be balanced with each other.

Second Embodiment Axis Types of Moving Objects

3 is a cross-sectional view showing a second embodiment of the vibration generating device of the present invention.

4 is a cross-sectional view showing a vibration generating device including another embodiment of the movable body of FIG. 3.

Vibration generating device according to a second embodiment of the present invention is characterized in that it has a moving shaft 240 for guiding the moving line of the moving body 210 to form a straight line.

Here, the configuration of the case 100 mentioned in the first embodiment is substantially the same and a description thereof will be omitted.

However, the inside of the case 100 is further provided with a moving shaft 240 connecting the inner end and the other end of the case 100.

[Moving part]

The moving part 201 is disposed in the inner space of the case 100 and has a predetermined length, the moving body 210 'which is a weight to which the moving shaft 240 of a predetermined length is fitted, and the moving shaft 240 is The yoke 300 is penetrated and fastened to one end of the movable body 210 'and the outer circumference protrudes for a predetermined length, and the yoke 300 so that the moving shaft 240 penetrates and is positioned inside the yoke 300'. It has a magnet 220 'fixed to the inner center of the').

The movable body 210 'is formed with a central hole 210a' to be movable by being inserted into the movable shaft 240, and the movable shaft 210 'and the movable body 210' are mutually formed in the movable body 210 '. Rolling support bearing 800 is installed.

Here, the movable body 210 ′ may be formed in a cylindrical shape and form an outer diameter smaller than the inner diameter of the case 100 to be movable in the inner space of the case 100. Therefore, a predetermined gap is formed between the outer circumference of the movable body 210 'and the inner circumference of the case 100.

In addition, one end of the movable body 210 'is provided with a bearing installation groove 213' having a predetermined depth. Accordingly, the cylindrical bearing 800 is installed in the bearing installation groove 213 'so as to support each other between the inner circumferential surface of the movable body 210' and the outer circumferential surface of the moving shaft 240.

In addition, a yoke fitting groove 212 'having a predetermined depth is formed at one end of the movable body 210' to be connected to the bearing installation groove 213 '. Accordingly, the yoke 300 'is fitted into the yoke fitting groove 212' to be fixed.

The yoke 300 ′ extends along one end surface of the moving body 210 ′ from the outer circumference of the head body 310 ′ and fitted into the yoke fitting groove 212 ′. The bending body 320 'is bent to protrude a predetermined length along a direction parallel to the outer circumference of the movable body 210' at the end. In addition, a predetermined space is formed inside the yoke 300 ′, and in particular, a magnetic fitting groove 310 a ′ is formed inside the head body 310 ′.

Here, the yoke 300 'is formed with a hole 300a' into which the moving shaft 240 is fitted. The bearing 800 is substantially positioned in the hole 300a '.

Therefore, the yoke 300 ′ may be fixed by being inserted into the yoke fitting groove 212 ′ at which the head body 310 ′ is formed at one end of the movable body 210 ′.

In addition, the magnetic fitting groove 310a ′ formed in the inner side of the head body 310 ′ may be fitted with and fixed to the magnetic 220 ′ according to the present invention. Here, the magnetic 220 'is made of a cylindrical solid and has a predetermined cross-sectional area. This cross-sectional area is determined in proportion to the inner diameter of the current applying unit 400 described below. Conversely, the inner diameter of the current applying unit 400 may be determined in proportion to the inner diameter of the magnetic 220 '.

A support plate 230 'is installed at one end of the magnetic 220' that is inserted into and fixed to the magnetic fitting groove 310a '. The support plate 230 ′ may be adhesively fixed to one end of the magnetic 220 ′ through an adhesive or the like.

On the other hand, the other end of the movable body 210 'may be formed with a support groove 211 "having a predetermined depth, the support groove 211" may be formed to be located inside the other end of the movable body 210'. have.

In addition, one end and the other end of the movable body 210 ′ may be formed in a curved shape having a predetermined curvature. This may serve to reduce contact resistance with the inner circumference of the case 100 generated while the moving body 210 ′ moves inside the case 100.

Therefore, the moving unit 201 according to the present invention can be configured as described above.

[Pair of elastomers]

Both ends of the moving part configured as described above may be elastically supported by a pair of elastic bodies 510 and 520 such as coil-shaped elastic springs installed at one end side and the other end side of the case 100.

The pair of elastic bodies 510 and 520 may include a first elastic body 510 disposed on one end side of the case 100 and a second elastic body 520 disposed on the other end side of the case 510.

One end of the first elastic body 510 is elastically supported on one surface of the support plate 230 'provided at the end of the magnet 220', and the other end is elastically supported on one inner side surface of the case 100.

In addition, one end of the second elastic body 520 is elastically supported by the support groove (), and the other end is elastically supported by the inner peripheral surface of the other end side of the case 100.

Here, the first elastic body 510 and the second elastic body 520 may have a coil shape, have the same inner diameter, and may have the same elastic modulus.

In addition, a current applying unit 400, which is a coil according to the present invention, is positioned on an outer circumference of the first elastic body 510. Therefore, the current applying unit 400 is disposed to surround the outer periphery of the first elastic body 510.

Here, the inner diameter of the current applying unit 400 is preferably formed in proportion to the cross-sectional area of the magnet 220 '.

Meanwhile, a flexible circuit board 300 for transmitting an electrical signal to the current applying unit 400 may be disposed on one inner side surface of the case 100.

In addition, the current applying unit 400 may be included in the internal space of the bending body of the yoke 300 'mentioned above.

Therefore, when the current applying unit 400 receives an electrical signal from the outside, the current applying unit 400 generates a current, thereby generating an electromagnetic force capable of moving the moving body 210 'in one direction. do.

In addition, since both ends of the movable body 210 ′ moved by such a force are elastically supported by the first and second elastic bodies 510.520, a predetermined elastic flow up and down may be realized.

At this time, since the movable body 210 'can be elastically flown while being fitted to the movable shaft 240, the moving line of the movable body 210' can be easily guided to form a straight line by the movable shaft 240. have.

[Another Example of Modification of Moving Body]

Meanwhile, referring to FIG. 4, a support groove 211 ′ ″ is formed in the movable body 210 ′ according to the present invention, and the support groove 211 ′ ″ is formed at the outer circumference of the other end of the movable body 210 ′. It may be formed. In this case, the second elastic body 521 supported in the support groove 211 ′ ″ may be formed to a predetermined size than the inner diameter of the first elastic body 510. Here, the elastic modulus of the first and second elastic bodies 510 and 521 may be formed differently.

Preferably, the elastic modulus of the second elastic body 521 is preferably smaller than the elastic modulus of the first elastic body 510. Therefore, the elastic modulus of the first and second elastic bodies 510 and 521 may be balanced with each other.

Third Embodiment Moving Part of Second Solid Type

5 is a cross-sectional view showing a third embodiment of the vibration generating device of the present invention. 6 is a cross-sectional view showing a vibration generating device including another embodiment of the movable body of FIG. 5.

Referring to FIG. 5, a vacuum generating apparatus according to a third exemplary embodiment of the present invention may largely make a case having a space therein, a moving part installed to be movable in the case, and the moving part. It consists of a current applying unit that provides an electromagnetic force.

The above configurations will be described in detail.

The case 100 forms a cylindrical shape having a predetermined inner diameter and is formed to have a predetermined length. And, one end of the case 100 is formed with a distribution hole 110 for exposing the inner space of the case 100 to the outside. Here, the distribution holes 110 may be formed in one or a plurality, the size and number of the distribution holes 110 may be formed in proportion to the space volume of the internal space of the case 100. In addition, the distribution hole 110 is moved so that the pressure generated in the inner space of the case 100 is easily discharged to the outside when the moving unit 700 described below moves inside the case 100. It may have a role for smooth movement of the part 700.

[Moving part]; Solid type

The moving unit 700 is disposed in the inner space of the case 100 and the movable body 710 having a predetermined length and the yoke 301 is fastened to one end of the movable body 710 and the outer circumference protrudes a predetermined length And a magnet 720 fixed to an inner central portion of the yoke 301 so as to be positioned inside the yoke 301.

Here, the movable body 710 may be formed in a cylindrical shape and form an outer diameter smaller than the inner diameter of the case 100 so as to be movable in the inner space of the case 100. Therefore, a predetermined gap is formed between the outer circumference of the movable body 710 and the inner circumference of the case 100.

In addition, a yoke fitting groove 712 is formed at one end of the movable body 710 to have a predetermined depth. Therefore, the yoke fitting groove 712 is fixed to the yoke 301.

The yoke 301 extends along one end surface of the moving body 710 from the outer circumference of the head body 311 and the head body 311 fitted in the yoke fitting groove 712 and at the end of the moving body ( Auxiliary bending which is formed to be outwardly formed from the end of the bending body 312 and the bending body 312 protruded and bent to have an inner diameter included in the width of the movable body 710 along a direction parallel to the outer circumference of the 710 Body 313. Here, preferably, the auxiliary bending body 313 is formed to be inclined upwardly outward. This is to prevent the first elastic body 511 described below from protruding outward.

 In addition, a predetermined space is formed inside the yoke 301, and in particular, a magnetic fitting groove 311 a is formed inside the head body 311.

Therefore, the yoke 301 may be fixed by being inserted into the yoke fitting groove 712 in which the head body 311 is formed at one end of the movable body 710.

In addition, the magnetic 720 according to the present invention may be inserted into and fixed in the magnetic fitting groove 311a formed at the inner side of the head body 311. Here, the magnetic 720 is made of a cylindrical solid and has a predetermined cross-sectional area. This cross-sectional area is determined in proportion to the inner diameter of the current application unit 401 described below. Conversely, the inner diameter of the current applying unit 401 may be determined in proportion to the inner diameter of the magnetic 720.

On the other hand, the other end of the movable body 710 may be formed with a support groove 711 having a predetermined depth, the support groove 711 may be formed to be located on the outer periphery of the other end of the movable body 710.

In addition, one end and the other end of the movable body 710 may be formed in a curved shape having a predetermined curvature. This may serve to reduce contact resistance with the inner circumference of the case 100 generated while the moving body 710 moves inside the case 100.

Therefore, the moving part 700 according to the present invention can be configured as described above.

[Pair of elastomers]

Both ends of the moving part configured as described above may be elastically supported by a pair of elastic bodies 511 and 521 such as coil-shaped elastic springs installed at one end side and the other end side of the case 100.

The pair of elastic bodies 511 and 521 may include a first elastic body 511 disposed on one end side of the case 100 and a second elastic body 521 disposed on the other end side of the case 100.

One end of the first elastic body 511 is elastically supported on the inclined portion of the auxiliary bending body 313, the other end is elastically supported on one end side inner circumferential surface of the case 100. In particular, the other end of the first elastic body 511 is supported on the inclined surface of the inclined portion 120 formed on the inner inner circumferential surface of the case 100. The inclined surface is formed to open along the outer circumferential direction of the case 100 to prevent the other end of the first elastic body 511 from protruding outward.

One end of the second elastic member 521 is elastically supported by the support groove 711, and the other end thereof is elastically supported by the inner peripheral surface of the other end side of the case 100.

Here, the first elastic body 511 and the second elastic body 521 may be formed in the shape of a coil, have the same inner diameter, and may have the same elastic modulus.

In addition, a current applying unit 401, which is a coil according to the present invention, is positioned on the inner circumferential side of the second elastic body 521. Therefore, the current applying unit 401 is disposed in the inner space of the second elastic body 521.

Here, the inner diameter of the current applying unit 401 is preferably formed in proportion to the cross-sectional area of the magnet 720.

Meanwhile, a flexible circuit board 600 for transmitting an electrical signal to the current applying unit 401 may be disposed on one inner side surface of the case 100.

In addition, the current applying unit 401 may be included in a space between the inner circumference of the bending body 312 of the yoke 301 mentioned above and the outer circumference of the magnet 720.

Therefore, when the current applying unit 401 receives an electrical signal from the outside, the current applying unit 401 generates a current, thereby generating an electromagnetic force capable of moving the moving body 710 in one direction. .

In addition, since both ends of the movable body 710 moved by such a force are elastically supported by the first and second elastic bodies 511 and 521, a constant elastic flow up and down may be realized.

[Another Example of Modification of Moving Body]

Meanwhile, referring to FIG. 6, a support groove 711 ′ is formed in the movable body 710 according to the present invention, and the support groove 711 ′ may be formed inside the other end of the movable body 710. In this case, the second elastic body 520 supported by the support groove 711 ′ may be formed to be smaller than the inner diameter of the first elastic body 511. Herein, the elastic modulus of the first and second elastic bodies 511 and 520 may be different from each other.

Preferably, the elastic modulus of the second elastic body 520 is formed to be larger than the elastic modulus of the first elastic body 511 at a constant. Therefore, the elastic modulus of the first and second elastic bodies 511 and 520 may be balanced with each other.

[Fourth Embodiment] Shaft Type of Moving Body

7 is a cross-sectional view showing a fourth embodiment of the vibration generating device of the present invention.

8 is a cross-sectional view showing a vibration generating device including another embodiment of the movable body of FIG. 7.

The vibration generating device according to the fourth embodiment of the present invention is characterized by having a moving shaft 740 for guiding the moving line of the moving body 710 'to form a straight line.

Here, the configuration of the case 100 mentioned in the third embodiment is substantially the same and a description thereof will be omitted.

However, the moving shaft 740 connecting the inner end and the other end of the case 100 is further installed inside the case 100.

[Moving part]

The moving part 701 is disposed in the inner space of the case 100, has a predetermined length, a moving body 710 'which is a weight to which a moving shaft 740 of a predetermined length is fitted, and the moving shaft 740 is A yoke 301 ′ penetrated to one end of the movable body 710 ′ and having an outer circumference protruding a predetermined length, and the yoke 301 so that the moving shaft 740 penetrates and is positioned inside the yoke 301 ′. Has a magnet 720 'fixed to an inner central portion of the "

The movable body 710 'is formed with a central hole 710a' so as to be movable by being inserted into the movable shaft 740, and the movable shaft 740 and the movable body 710 'are formed in the movable body 710'. Rolling support bearing 800 is installed.

Here, the movable body 710 ′ is formed in a cylindrical shape and preferably forms an outer diameter smaller than the inner diameter of the case 100 to be movable in the inner space of the case 100. Therefore, a predetermined gap is formed between the outer circumference of the movable body 710 'and the inner circumference of the case 100.

And, one end of the movable body 710 'is formed with a bearing installation groove 713' which is deeply drilled inward. Accordingly, the cylindrical bearing 800 is installed in the bearing installation groove 713 ′ so as to support each other between the inner circumferential surface of the moving body 710 ′ and the outer circumferential surface of the moving shaft 740.

In addition, a yoke fitting groove 712 'having a predetermined depth is formed at one end of the movable body 710' so as to be connected to the bearing installation groove 713 'inwardly. Thus, the yoke fitting groove 712 'is fitted with a yoke 301'.

The yoke 301 ′ extends along one end surface of the moving body 710 ′ from the outer circumference of the head body 311 ′ fitted to the yoke fitting groove 712 ′, and A bending body 312 'bent to protrude a predetermined length along a direction parallel to the outer circumference of the moving body 710' at an end, and at the end of the bending body 312 ' And an auxiliary bending body 313 'extending upwardly inclined. Here, the inclined portion of the auxiliary bending body 313 ′ is a portion in which one end of the first elastic body 511 is elastically supported.

A predetermined space is formed inside the yoke 301 ′, and in particular, a magnetic fitting groove 311 ′ is formed inside the head body 311 ′.

Here, the yoke 301 'is formed with a hole 300a' into which the moving shaft 740 is fitted.

Accordingly, the yoke 301 'may be fixed by being fitted into the yoke fitting groove 712' formed at one end of the moving body 710 '.

In addition, a magnetic 720 'according to the present invention may be inserted into and fixed to the magnetic fitting groove 300a' formed at the inner side of the head body 311 '. Here, the magnetic 720 ′ is made of a solid cylindrical shape and has a predetermined cross-sectional area. This cross-sectional area is determined in proportion to the inner diameter of the current application unit 401 described below. Conversely, the inner diameter of the current applying unit 401 may be determined in proportion to the inner diameter of the magnetic 720 '.

On the other hand, the other end of the movable body 710 'may be formed with a support groove 711 "having a predetermined depth, the support groove 711" may be formed to be located on the outer periphery of the other end of the movable body 710' have.

In addition, one end and the other end of the movable body 710 'may be formed in a curved shape having a predetermined curvature. This may serve to reduce contact resistance with the inner circumference of the case 100 generated while the moving body 710 ′ moves inside the case 100.

Therefore, the moving unit 701 according to the present invention can be configured as described above.

[Pair of elastomers]

Both ends of the moving part 701 configured as described above may be elastically supported by a pair of elastic bodies 511 and 521 such as coil-shaped elastic springs installed at one end side and the other end side of the case 100.

The pair of elastic bodies 511 and 521 may include a first elastic body 511 disposed at one inner side of the case and a second elastic body 521 disposed at the other end side of the case 100.

One end of the first elastic body 511 is elastically supported on the inclined portion of the auxiliary bending body 313 ', and the other end is elastically supported on one end side inner circumferential surface of the case 100. In particular, the other end of the first elastic body 511 is supported on the inclined surface of the inclined portion 120 formed on the inner inner circumferential surface of the case 100. The inclined surface is formed to open along the outer circumferential direction of the case 100 to prevent the other end of the first elastic body 511 from protruding outward.

One end of the second elastic member 521 is elastically supported by the support groove 711 ″, and the other end thereof is elastically supported by the inner peripheral surface of the other end side of the case 100.

Here, the first elastic body 511 and the second elastic body 521 may be formed in the shape of a coil, have the same inner diameter, and may have the same elastic modulus.

In addition, a current applying unit 401, which is a coil according to the present invention, is positioned on the inner circumferential side of the second elastic body 521. Therefore, the current applying unit 401 is disposed in the inner space of the second elastic body 521.

Here, the inner diameter of the current applying unit 401 is preferably formed in proportion to the cross-sectional area of the magnet 720 '.

Meanwhile, a flexible circuit board 600 for transmitting an electrical signal to the current applying unit 401 may be disposed on one inner side surface of the case 100.

The current applying unit 401 may be included in a space between the inner circumference of the bending body 312 ′ of the yoke 301 ′ mentioned above and the outer circumference of the magnet 720 ′.

Therefore, when the current applying unit 401 receives an electrical signal from the outside, the current applying unit 401 generates a current, thereby generating an electromagnetic force capable of moving the moving body 710 'in one direction. do.

In addition, since both ends of the movable body 710 'moved by such a force are elastically supported by the first and second elastic bodies 511 and 521, a constant elastic flow up and down may be realized.

In this case, since the movable body 710 'is inserted into the movable shaft 740 and moved, the movable shaft 740 may allow the elastic flow to be performed while the moving line of the movable body 710' forms a straight line.

[Another Example of Modification of Moving Body]

Meanwhile, referring to FIG. 8, a support groove 711 ′ ″ is formed in the movable body 710 ′ according to the present invention, and the support groove 711 ′ ″ is located inside the other end of the movable body 710 ′. It may be formed. In this case, the second elastic body 520 supported in the support groove 711 ′ ″ may be formed to be smaller than the inner diameter of the first elastic body 511. Herein, the elastic modulus of the first and second elastic bodies 511 and 520 may be different from each other.

Preferably, the elastic modulus of the second elastic body 520 is formed to be larger than the elastic modulus of the first elastic body 511 at a constant. Therefore, the elastic modulus of the first and second elastic bodies 511 and 520 may be balanced with each other.

100: case
200,201,700,701: moving part
210, 210 ': moving object
510,511: first elastic body
520,521: second elastic body
300,300 ', 301,301': York
400, 401: current applying unit

Claims (9)

A case having a predetermined length and having a distribution hole exposing the inside thereof;
A moving part disposed inside the case so as to be movable along a length direction of the case and having a magnet at one end thereof;
A pair of elastic parts disposed inside the case to elastically support both ends of the moving part; And
It is installed inside the case so as to be located at one end of the moving part, has a predetermined internal space that can surround the outer periphery of the magnet, the current received from the outside to apply a current for generating an electromagnetic force to the moving part Vibration generating device comprising an application unit. The method of claim 1,
The moving unit,
A movable body having the predetermined length, a yoke fastened to one end of the movable body and having an outer circumference protruding by a predetermined length, and the magnet fixed to an inner central portion of the yoke so as to be positioned inside the yoke; Device. The method of claim 2,
The other end of the movable body, the vibration generating device is characterized in that the support groove is formed in which the end of any one of the pair of elastic bodies provided on the other end side of the movable body in contact support. The method of claim 3, wherein
The support groove is a vibration generating device, characterized in that formed in any one of the other end central portion of the movable body, and the other end outer peripheral portion of the movable body. The method of claim 2,
Vibration generating device characterized in that the outer periphery of the movable body is formed in a curved shape to form a predetermined curvature. The method of claim 2,
Inside the case is further provided a moving shaft connecting the inner end and the other end of the case,
The movable body is formed in the central hole so as to be movable on the moving shaft,
Vibration generating device is characterized in that the movable body is provided with a bearing supporting the moving shaft and the movable body to each other. The method of claim 2,
The outer circumference of the yoke protrudes side by side along the outer circumference of the movable body,
At the end of the magnet support plate is further fixed,
The other one of the pair of elastic bodies located on one end side of the movable body elastically supports the support plate and the other end of the inside of the case,
And the other of the pair of elastic bodies is disposed in an inner space of the current applying unit. The method of claim 2,
The outer circumference of the yoke protrudes and is located inside the outer circumference of the movable body,
The other one of the pair of elastic bodies located on one end of the movable body elastically supports the outer circumferential end of the yoke and the inner other end of the case,
And the other of the pair of elastic bodies is disposed on an outer circumferential side of the current applying unit. The method of claim 1,
The current applying unit is made of a coil having a predetermined inner diameter,
The inner diameter of the current applying unit and the cross-sectional area of the magnet has a proportional relationship with each other.
KR1020100008758A 2010-01-29 2010-01-29 Apparatus for generating vibration KR101152417B1 (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101320226B1 (en) * 2012-08-16 2013-10-21 삼성전기주식회사 Vibratior
KR101388868B1 (en) * 2012-09-06 2014-04-30 삼성전기주식회사 vibratior
CN104052229A (en) * 2013-03-15 2014-09-17 三星电机株式会社 Vibrator And Electronic Apparatus Having Thereof

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KR102087798B1 (en) 2019-11-08 2020-04-24 주식회사 엠플러스 Horizontal linear vibrator

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Publication number Priority date Publication date Assignee Title
JP2003117489A (en) * 2001-10-10 2003-04-22 Citizen Electronics Co Ltd Axially driven vibrator
JP2003225613A (en) * 2002-02-05 2003-08-12 Citizen Electronics Co Ltd Axial direction driven vibrating body

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101320226B1 (en) * 2012-08-16 2013-10-21 삼성전기주식회사 Vibratior
KR101388868B1 (en) * 2012-09-06 2014-04-30 삼성전기주식회사 vibratior
US8941273B2 (en) 2012-09-06 2015-01-27 Samsung Electro-Mechanics Co., Ltd. Vibration generation device
CN104052229A (en) * 2013-03-15 2014-09-17 三星电机株式会社 Vibrator And Electronic Apparatus Having Thereof
KR20140113857A (en) * 2013-03-15 2014-09-25 삼성전기주식회사 Vibrator and electronic apparatus having thereof
CN104052229B (en) * 2013-03-15 2019-06-28 Mplus株式会社 Vibrator and electronic device including the vibrator

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