KR20110041246A - Apparatus for generating vibration and mobile device comprising the same - Google Patents

Abstract

PURPOSE: A vibration generating device and a mobile terminal with the same are provided to supply various feelings of vibrations. CONSTITUTION: A vibration generating device(1) comprises an electromagnetic force generating unit(11), a vibrator(12), a transfer member(13), and a spring(14). The electromagnetic force generating unit generates an electromagnetic force by receiving driving power. The vibrator vibrates in a fixed direction by receiving the electromagnetic force and vibrates in different directions according to the frequency of the driving power. A transfer member transfers the vibration of the vibrator to the outside. The spring is installed between the vibrator and the transfer member and includes at least two bending parts.

Description

Vibration generating device and a mobile terminal having the same {APPARATUS FOR GENERATING VIBRATION AND MOBILE DEVICE COMPRISING THE SAME}

The present invention relates to a vibration generating device and a mobile terminal having the same. More specifically, the present invention relates to a vibration generating device for providing a plurality of different vibration effects with one vibrator and a mobile terminal having the same.

Vibration generating device is widely used as a means for notifying the incoming of the mobile terminal is mounted on the mobile terminal, and recently, it is also installed in the game machine is increasing its use as a means for delivering the game effect to the user.

Recently released mobile terminals have a function of providing feedback corresponding to the input to the user by outputting voice or vibration in response to the user's input.

In particular, in the case of a mobile terminal to which haptic technology is applied, research on a vibration generating device that generates vibrations of a unique feeling unlike the conventional ones in order to provide various types of tactile feedback in response to various inputs of a user is in full swing. It is becoming.

An object of the present invention is to provide a vibration generating device having one vibrator for providing two or more different vibrations and a mobile terminal using the same.

An object of the present invention is to provide a vibration generating device for providing a plurality of vibrations having different vibration frequencies with one vibrator and a mobile terminal using the same.

An object of the present invention is to provide a vibration generating device for providing a plurality of vibrations having different vibration directions with one vibrator and a mobile terminal using the same.

Vibration generating device according to an embodiment of the present invention is at least one electromagnetic force generating unit for generating an electromagnetic force by receiving the drive power; A vibrator vibrating in a predetermined direction by the electromagnetic force and vibrating in different directions according to the frequency of the driving power source; Transmission member for transmitting the vibration to the outside; And at least one elastic body, one end of which is attached to the vibrator and the other end of which is attached to the transmission member, having at least two bent portions between the one end and the other end.

A mobile terminal according to an embodiment of the present invention includes a display unit for displaying a predetermined image; A user input unit to receive an input from a user; At least one electromagnetic force generating unit generating vibration and generating electromagnetic force by receiving driving power; A vibrator vibrating in a predetermined direction by the electromagnetic force and vibrating in a different direction according to the frequency of the driving power source; Transmission member for transmitting the vibration to the outside; And at least one elastic body having one end attached to the vibrator and the other end attached to the transmission member, and having at least two bent portions between the one end and the other end. And a control unit controlling an operation of the mobile terminal.

According to the present invention, it is possible to provide two or more different vibration effects by providing only one vibrator without providing a plurality of vibrators.

According to the present invention, since a plurality of different vibrations are generated using one vibrator, a vibration device that is lighter, more compact, and provides vibrations of various feelings can be provided.

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

1 and 2 are perspective views of a vibration generating device 1 according to an embodiment of the present invention, Figure 3 is an exploded perspective view of the vibration generating device 1, Figure 4 is a vibration generating device 1 of Front view.

As shown in FIGS. 1 to 4, the vibration generating apparatus 1 according to an embodiment of the present invention is provided with at least one electromagnetic force generating unit 11 generating electromagnetic force by receiving driving power, and receiving the electromagnetic force. A vibrator 12 vibrates in a predetermined direction and vibrates in different directions according to the frequency of the driving power, a transmission member 13 for transmitting vibrations to the outside, and one end is attached to the vibrator 12, and the other end of the vibrator 12. It is attached to the transmission member, and comprises at least one elastic body 14 having two or more bent portions between the one end and the other end.

The electromagnetic force generating unit 11 receives the driving power to generate the electromagnetic force.

According to an embodiment, the electromagnetic force generating unit 11 may include a coil 111 for generating magnetic flux by receiving the driving power and a magnetic body 112 for generating attraction or repulsive force by interacting with the magnetic flux.

According to an embodiment, the electromagnetic force generating unit 11 may further include a core 113 for increasing the magnetic flux density of the coil 111.

In this case, the coil 111 has a shape in which a conductive wire having a predetermined thickness is wound around the core 113 a plurality of times. The core 113 is configured to pass through the center of the coil 111, the material is made of a good degassing material when the driving power applied to the coil 111 is cut off, which is silicon steel, ferrite core, etc. Can be.

According to an embodiment of the present invention, when driving power is applied to the coil 111, magnetic flux is generated in the direction of the current flowing along the coil 111. The direction of the magnetic flux follows the right hand rule. The magnetic flux generated as described above generates an electromagnetic force through interaction with the magnetic body 112.

5 is a front view and a side view illustrating the electromagnetic force generating unit 11 of the vibration generating device 1 according to an embodiment of the present invention.

As shown in FIG. 5, the electromagnetic force generating unit 11 of the vibration generating apparatus 1 according to an embodiment of the present invention interacts with the coil 111 and the magnetic flux to generate magnetic flux by receiving driving power. It may include a magnetic body 112 for generating attraction or repulsive force.

The coil 111 may increase the magnetic flux density of the magnetic flux generated by including the core 113 therein.

As such, the magnetic flux generated by the coil 111 and the core 113 proceeds in a direction parallel to the central axis of the coil 111 and interacts with the magnetic body 112 positioned around the coil 111. It generates the electromagnetic force of attraction or repulsive force.

In some embodiments, the magnetic body 112 may be disposed on a central axis of the coil 111.

According to an embodiment, as shown in FIG. 5, the electromagnetic force generating unit 11 may include two magnetic bodies, in which case the magnetic bodies 112 face each other at both ends of the coil 111. Can be arranged.

In addition, when the magnetic body 112 is two, the magnetic body 112 is disposed so that the same pole toward the coil 111. For example, as shown in FIG. 5, when the N pole of the magnetic body disposed above the coil 111 faces the coil 111, the magnetic body disposed below the coil 111 is also illustrated. The N pole is also disposed to face the coil 111.

As a result, when a current in a predetermined direction flows to the coil 111 and the upper side of the coil 111 becomes the N pole and the lower side becomes the S pole, an electromagnetic force of the repulsive force is generated on the upper side of the coil 111. The lower side of the coil 111 generates an electromagnetic force of the attraction force can be generated an electromagnetic force of the action direction is downward.

Similarly, when the S pole of the upper magnetic body is disposed to face the coil 111, the lower magnetic body is also disposed so that the S pole faces the coil 111, and as a result, the electromagnetic force generating unit 11 has an electromagnetic force in an upward direction. Can be generated.

The magnetic body 112 may be a permanent magnet or an electromagnet having magnetic properties by applying power.

In some embodiments, the electromagnetic force generating unit 11 may further include a yoke 115 for setting a magnetic flux path of the magnetic body 112.

In some embodiments, as illustrated in FIG. 5, the yoke 115 may be provided on an opposite surface of the surface of the magnetic body 112 facing the coil 111. That is, in FIG. 5, the yoke 115 is provided on an upper side of an upper magnetic body, and is provided on a lower side of a lower magnetic body so that the magnetic body 112 is positioned between the yoke 115 and the coil 111. Can be.

According to the embodiment, the transmission member 13 of the vibration generating device 1 according to an embodiment of the present invention may be composed of a magnetic body, in this case, the magnetic flux generated by the electromagnetic force generating unit 11 is a magnetic body ( 112, the coil 111, the transfer member 13, and the yoke 115 may be advanced.

For example, as shown in the side view (right figure) of FIG. 5, the magnetic flux 32 of the electromagnetic force generating unit 11 proceeds from the magnetic body 112 to the coil 111, and the transmission member 13. Proceeds to the yoke 115 along the transfer member 13, and proceeds from the yoke 115 to the magnetic body 112 to form a series of closed curve.

As described above, the electromagnetic force generating unit 11 generates an electromagnetic force along a central axis of the coil 111, more specifically, along a traveling direction of the magnetic flux connecting the coil 111 and the magnetic body 112. The electromagnetic force acts on the vibrator 12 to be described later to cause vibration.

The vibrator 12 is vibrated in a predetermined direction by the electromagnetic force. That is, the vibrator 12 resonates using the electromagnetic force generated by the electromagnetic force generating unit 11 as an external force and vibrates in a predetermined direction.

In addition, the vibrator 12 vibrates in different directions according to the frequency of the driving power applied to the electromagnetic force generating unit 11.

According to an embodiment, the vibrator 12 may have a hole therein, and the electromagnetic force generating unit 11 may be provided inside the hole.

For example, as shown in FIGS. 1 to 4, the vibrator 12 includes a hole having a predetermined size therein, and the coil 111 of the electromagnetic force generator 11 may be located inside the hole. Can be.

According to an embodiment, the hole may be formed in the center of the vibrator 12, but is not limited thereto and may be eccentrically formed in a predetermined direction.

In this case, the size of the hole may be determined in consideration of the vibration amplitude of the vibrator 12 to the size of the coil 111.

That is, the hole is larger than the size of the coil 111 and may be formed with a size equal to or greater than the vibration amplitude so that the vibrator 12 does not collide with the coil 111 when the vibrator 12 vibrates.

According to an embodiment, any one of the coil 111 or the magnetic body 112 constituting the electromagnetic force generating unit 11 is coupled to the vibrator 12 to transmit the electromagnetic force to the vibrator 12.

1 to 4, the coil 111 is provided in a hole formed in the vibrator 12, and the magnetic body 112 is coupled to the vibrator 12, but is not limited thereto. ) May be coupled to the vibrator 12 and the magnetic body 112 may be provided in a hole formed in the vibrator 12.

In addition, in FIGS. 1 to 4, the magnetic body 112 is inserted into the vibrator 12 to minimize the size of the vibration generating device 1, but is not limited thereto. The magnetic body 112 may be the vibrator. It may be attached to the surface of (12).

According to an embodiment, in addition to the magnetic body 112, the yoke 115 may also be inserted into the vibrator 12 to minimize the size of the vibration generating device 1.

The vibrator 12 is attached to the end of the elastic body 14 to be described later to vibrate. That is, the vibrator 12 may act as a mass in the vibrating motion using the elastic body 14, and may adjust the vibration amount, vibration frequency, etc. of vibration generated according to the mass, shape, etc. of the vibrator 12. have.

According to an embodiment, the vibrator 12 may be configured to occupy the remaining space other than the space occupied by the electromagnetic force generating unit 11 in the transmission member 13. However, a free space necessary for the vibrating movement of the vibrator 12 should be secured between the vibrator 12 and the transmission member 13 and between the vibrator 12 and the electromagnetic force generating unit 11.

The transmission member 13 transmits the vibration generated by the vibrator 12 to the outside. According to an embodiment, the transmission member 13 may be provided in the form of a case including the electromagnetic force generating unit 11, the vibrator 12 and the elastic body 14 therein.

In addition, as described above, part or all of the transmission member 13 may be formed of a magnetic material to determine a traveling direction of the magnetic flux generated by the electromagnetic force generating unit 11.

One end of the elastic body 14 is attached to the vibrator 12, the other end is attached to the transmission member 13, and has two or more bent portions between the one end and the other end.

That is, the elastic body 14 may be a leaf spring connecting the vibrator 12 and the transmission member 13 with a predetermined elastic modulus.

In this case, one end 141 of the elastic body 14 is connected to the vibrator 12, the other end 142 is connected to the transmission member 13 to transmit the vibration of the vibrator 12 to the transmission member 13. The elastic body 14 may be supported by the transmission member 13 to perform elastic movement.

The elastic body 14 includes two or more curved portions between the one end 141 and the other end 142.

For example, as shown in FIGS. 3 and 4, the elastic body 14 may include two or more bends 143 and 144 between the one end 141 and the other end 142.

3 and 4, the bent portions 143 and 144 may be gently bent at an angle of 90 °, but the bent angles of the bent portions 143 and 144 may be less than 90 °. It may be large.

As described above, as a result of the elastic body 14 having a plurality of bends 143 and 144, the vibrator 12 may vibrate in a plurality of directions, for example, the elastic body 14 as shown in FIG. 4 and In the coupling of the vibrator 12, the vibrator 12 may vibrate in the x-axis direction and may also vibrate in the y-axis direction.

As such, the vibration generating apparatus 1 according to an embodiment of the present invention has a plurality of vibration modes, for example, a vibration mode in the x-axis direction and a vibration mode in the y-axis direction, each vibration mode being different from each other. Has a vibration frequency.

For example, if the vibration frequency of the vibrator 12 is f1 in the vibration mode in which the vibrator 12 vibrates in the x-axis direction, the vibration frequency of the vibrator 12 in the vibration mode vibrates in the y-axis direction is f2. As a result, the vibration frequencies in the two vibration modes may be different.

The vibration frequency may be determined according to the elastic modulus, the stiffness of the elastic body 14, the mass, the shape of the vibrator 12, and the position and size of the hole.

That is, the natural frequency of the vibration in the x-axis and the natural frequency of the vibration in the y-axis due to the mass, shape, and size of the vibrator 12 and the elastic body 14 constituting the vibration generating device 1 of the present invention. Is determined.

Therefore, if the frequency of the driving power applied to the electromagnetic force generating unit 11 is f1, the vibration frequency of the electromagnetic force generated by the electromagnetic force generating unit 11 will be f1, as a result, the vibrator 12 is x The vibration frequency of the vibration generated by the vibration generating device 1 by resonating in the axial direction is f1.

Similarly, if the frequency of the driving power applied to the electromagnetic force generating unit 11 is f2, the vibration frequency of the electromagnetic force generated by the electromagnetic force generating unit 11 will be f2, as a result, the vibrator 12 is the y-axis The vibration frequency of the vibration generated by the vibration generating device 1 by resonating in the direction becomes f2.

As such, the vibration generating apparatus 1 of the present invention includes a plurality of vibration modes having different natural frequencies, and different vibration frequencies and vibration directions depending on the frequency of the driving power applied to the electromagnetic force generating unit 11. It can generate a vibration having.

According to an embodiment of the present invention, the electromagnetic force generating unit 11 may be provided such that an action direction of the electromagnetic force forms a predetermined angle with the vibration direction of the vibrator 12.

For example, as shown in Figure 4, the direction of action of the electromagnetic force generated by the electromagnetic force generating unit 11, that is, the direction parallel to the central axis of the coil 111 is the vibration direction of the vibrator 12, That is, it may be configured to form a predetermined angle with the x-axis direction and the y-axis direction.

The vibration generating apparatus 1 according to the exemplary embodiment of the present invention illustrated in FIGS. 1 to 4 may generate the electromagnetic force in only one direction because there is only one electromagnetic force generating unit 11. Therefore, when the direction of action 31 of the electromagnetic force is arranged to be out of the vibration direction by the plurality of vibration modes, the electromagnetic force can be divided in the vibration direction of the plurality of vibration modes, and as a result, the vibration of the electromagnetic force It can vibrate in a vibration mode having a natural frequency equal to the frequency.

For example, as shown in FIGS. 5 and 6, the direction of action of the electromagnetic force generated by the electromagnetic force generating unit, that is, the direction parallel to the central axis 31 of the coil 111 is between the x-axis and the y-axis. It can be configured to be located.

When the direction of action 31 of the electromagnetic force does not coincide with the vibration direction of the vibrator 12, that is, the x-axis and the y-axis, the electromagnetic force F may be decomposed into Fx and Fy. The electromagnetic force can act in both the x- and y-axis directions.

As a result, the vibration generating device 1 of the present invention can apply a force in a plurality of directions using one electromagnetic force generating unit 11 can implement two or more vibration modes.

In addition, the frequency of the driving power applied to the electromagnetic force generating unit 11 may be controlled to generate vibration in one of the two or more vibration modes.

For example, as shown in FIG. 6, when driving power having a frequency of f1 is applied to the electromagnetic force generating unit 11, the electromagnetic force F is decomposed in the x-axis and y-axis directions by Fx and Fy, respectively. The vibrator 12 vibrates in a vibration mode corresponding to the frequency f1 of the driving power source, and finally vibrates with a vibration frequency of f1 in the x-axis direction.

On the contrary, as shown in FIG. 7, when a driving power source having a frequency of f 2 is applied to the electromagnetic force generating unit 11, the electromagnetic force F is decomposed into Fx and Fy and acted in two different directions, but the vibrator ( 12) vibrates in the y-axis vibration mode, which is a vibration mode corresponding to the frequency f2 of the driving power source, and finally vibrates with a vibration frequency of f2 in the y-axis direction.

As such, the vibration generating apparatus 1 according to an embodiment of the present invention includes two or more vibration modes having different natural frequencies, and the direction in which the electromagnetic force generated by the electromagnetic force generating unit 11 operates is two or more. When configured to deviate from the vibration direction of the vibration mode, it may vibrate in two or more different vibration modes according to the frequency of the driving power applied to the electromagnetic force generating unit 11.

According to the present invention, by providing one vibrator 12 and one electromagnetic force generating unit 11, the vibration effect of various feelings can be generated while reducing the number of components and reducing weight and size of the vibration generating device 1. .

8 is a graph showing the amount of vibration of the vibration generating device with respect to the frequency of the driving power source according to an embodiment of the present invention.

As shown in FIG. 8, the vibration generating apparatus 1 according to the exemplary embodiment of the present invention may include two vibration modes having different natural frequencies f1 and f2, and the frequency of any one of f1 or f2. By applying a driving power to the electromagnetic force generating unit 11 may generate vibration in any one of the two vibration modes.

That is, if the frequency of the driving power source is f1, the vibrator 12 vibrates in the x direction, and if the frequency of the driving power source is f2, the vibrator 12 will vibrate in the y direction.

In some embodiments, the driving power may be applied to the electromagnetic force generating unit 11 as a waveform obtained by synthesizing the frequencies of f1 and f2.

In this case, the vibrator 12 may vibrate in both the x and y directions to provide a vibration effect with a different feeling than the vibration in a single direction.

1 to 4, the elastic body 14 may include two bent portions between one end and the other end, but is not limited thereto. The elastic body 14 may include three or more bent portions.

For example, as shown in FIG. 9, the elastic body 14 may further include other bent parts 145 in addition to the two bent parts 143 and 144.

The added other bent portion 145 may be provided adjacent to the end attached to the transfer member 13 of the both ends of the elastic body (14). In addition, the added other bent portion 145 may be bent at an angle close to 180 ° unlike other bent portions 143 and 144 bent at 90 °.

Vibration generating device 1 according to an embodiment of the present invention can be distributed to the other portion of the elastic body 14 by providing an additional bent portion 145 adjacent to the end as described above.

According to an embodiment, the elastic body 14 may have three bent portions.

For example, as shown in FIG. 10, the elastic body 14 may have three bent portions 143, 144, and 145 between one end and the other end, and may be implemented to have a shape close to the letter.

As shown in FIG. 4 and FIG. 5, when the electromagnetic force generating unit 11 includes two magnetic bodies 112, two yokes 115 may be provided corresponding to the magnetic bodies 112. 11 and 12, only one yoke 115 may be provided.

That is, as shown in FIGS. 4 and 5, instead of the two yokes 115 being attached to one surface of the magnetic body 112, respectively, as shown in FIGS. 11 and 12, the two yokes 115 are shown. You can also connect) into a single yoke.

According to the embodiment, as shown in Figure 12, the transmission member 13 is provided with a hole 133 of a predetermined size so that the air in the transmission member 13 when the vibration of the vibrator 12 is leaked to the outside Or can be introduced into it.

As a result, when the vibrator 12 vibrates, vibration attenuation due to air in the transmission member 13 may be reduced.

As described above, the vibration generating device 1 according to an embodiment of the present invention may implement a plurality of different vibration modes by using one vibrator 12 and one electromagnetic force generating unit 11.

Hereinafter, a vibration generating apparatus according to another exemplary embodiment of the present invention including one vibrator and a plurality of electromagnetic force generating units will be described with reference to FIGS. 13 to 22.

13 to 15 are respectively a perspective view, an exploded perspective view and a front view of a vibration generating device 2 according to another embodiment of the present invention.

As shown in FIGS. 13 to 15, the vibration generating apparatus 2 according to another embodiment of the present invention operates two or more electromagnetic force generating units 20 and 21 for generating electromagnetic force by receiving driving power, and applying the electromagnetic force. Receives and vibrates in a predetermined direction, the vibrator 22 which vibrates in different directions according to the frequency of the driving power, the transmission member 23 for transmitting the vibration to the outside, and one end is attached to the vibrator 22 and the other end is It is attached to the transfer member 23, and includes two or more elastic bodies (241, 242) having two or more bends between the one end and the other end.

The electromagnetic force generating unit 11 may include coils 201 and 211 through which the driving power is supplied, and magnetic bodies 202 and 212 forming magnetic fields to interact with the magnetic flux to generate the Lorentz force.

That is, unlike the vibration generating device 1 according to the embodiment of the present invention described above, the vibration generating device 2 according to another embodiment of the present invention may vibrate the vibrator 22 using the force of Lorentz. .

In other words, the vibration generating apparatus of the present invention may use the attractive force or repulsive force between the coil and the magnetic body as the electromagnetic force for vibrating the vibrator, and may also use the Lorentz force between the coil and the magnetic body according to the embodiment.

This may be implemented in various ways by changing the arrangement of the coil relative to the magnetic body or the magnetization direction of the magnetic body.

16 and 17 are exemplary views illustrating the arrangement of the coils 201 and 211 and the magnetic bodies 202 and 212 of the vibration generating device 2 according to another embodiment of the present invention.

As shown in FIG. 16, the electromagnetic force generating unit 20 of the vibration generating apparatus 2 according to another exemplary embodiment of the present invention has a direction in which a current flowing along the coil 201 enters or exits the ground. The coil 201 and the magnetic body 202 can be arranged so that the flow of the magnetic field formed by the magnetic body 202 is parallel to the y-axis direction.

In this case, the force of Lorentz acting on the coil 201 by the Fleming's left hand law becomes the right direction, that is, the x-axis direction, and the coil 201 is fixed to the transmission member 23, thus acting-reacting. By the law of the Lorentz force is applied to the magnetic body 202 in the left direction.

As a result, when a current flows through the coil 201, the vibrator 22 may vibrate in the x-axis direction.

In some embodiments, the yoke 115 may be further attached to the coil 201 and the magnetic body 202 to adjust the direction of the magnetic field formed by the magnetic body 202.

That is, as shown in FIG. 16, the electromagnetic force generating unit 20 may include a yoke 203 on an opposite surface of the magnetic body 202 facing the coil 201.

In addition, the electromagnetic force generating unit 20 may include a yoke 204 on an opposite surface of the coil 201 facing the magnetic body 202.

As a result, the direction of the magnetic field formed by the magnetic body 202 starts from the N pole and proceeds to the coil 201, through the yoke 204 provided on one side of the coil 201, and again the magnetic body 202. In order to proceed to the S pole of the magnetic pole 202 through the yoke 203 provided on one surface of the magnetic body 202 may proceed to the N pole of the magnetic body 202 again.

As such, the vibrator 22 may vibrate in the left and right directions, that is, in the x-axis direction through the arrangement of the coil 201 and the magnetic body 202 illustrated in FIG. 16.

According to an embodiment, as shown in FIG. 17, the magnetic body 212 may be magnetized so that the magnetic field passing through the coil 211 travels in the y-axis direction to generate an electromagnetic force acting in the z-axis direction.

For example, when the direction of the magnetic field passing through the coil 211 is in the y-axis direction by changing the attachment direction of the N pole and the S pole of the magnetic body 212 as shown in FIG. The Lorentz force acting on the coil 211 may be parallel to the z-axis direction, and when the coil 211 is fixed to the transfer member 23, the Lorentz force is acted upon by the law of reaction-action. Will act on magnetic material 212.

As such, the vibrator 22 may vibrate in the front-back direction, that is, the z-axis direction through the arrangement of the coil 211 and the magnetic body 212 illustrated in FIG. 17.

However, FIGS. 16 and 17 are merely examples for describing a relationship between a coil and a magnetic body, and the coil and the magnetic body may be differently disposed according to the vibration direction of the vibrator 22 to generate an electromagnetic force.

According to an embodiment, any one of the coils or magnetic bodies constituting the electromagnetic force generating units 20 and 21 may be combined with the vibrator 22 to transmit the generated electromagnetic force to the vibrator 22.

13 to 15, the vibrator 22 is coupled to the magnetic body 212 to apply an electromagnetic force, but according to an embodiment, the vibrator 22 is coupled to the coil 211 and the magnetic body 212 is It is fixed to the transmission member 23 can transmit an electromagnetic force.

The vibrator 22 is vibrated in a predetermined direction by the electromagnetic force generated by the electromagnetic force generating units 20 and 21, and as described above, the vibration direction of the vibrator 22 may be changed according to the arrangement of the coil and the magnetic body. have.

Similar to the vibration generating device 1 according to the above-described embodiment, the vibration generating device 2 according to another embodiment also has a groove formed therein, and electromagnetic force generating units 20 and 21 are provided inside the groove. Can be.

In detail, a groove having a predetermined size is provided in the vibration generating device 2, and coils 201 and 211 of the electromagnetic force generating units 20 and 21 are provided in the groove, and the magnetic bodies 202 and 212 are the vibrators ( 22 to transmit the electromagnetic force to the vibrator (22).

The transmission member 23 transmits vibration to the outside, which is similar to the transmission member 13 of the vibration generating device 1 according to the embodiment of the present invention described above.

The elastic bodies 241 and 242 have one end attached to the vibrator 22 and the other end attached to the transfer member 23, and have two or more bent portions between the one end and the other end.

According to another embodiment of the present invention, the vibration generating device 2 may include two or more elastic bodies 241 and 242.

In this case, as shown in FIG. 15, the elastic bodies 241 and 242 have a first end 2411 attached to one surface of the vibrator 22 and the other end 2412 attached to one surface of the transmission member 23. The elastic body 241 and one end 2421 may include a second elastic body 242 attached to the other surface of the vibrator 22 and the other end 2422 attached to the other surface of the transmission member 23.

That is, the surfaces on which the first elastic body 241 and the second elastic body 242 are attached to the transmission member 23 may be configured to face each other, and the first elastic body 241 and the vibrator 22 may face each other. Surfaces to which the second elastic body 242 is attached may be configured to face each other.

The first elastic body 241 includes two or more bends 2413 and 2414 between one end 2411 and the other end 2412, and the second elastic body 242 also has one end 2421 and the other end 2422. It may include two or more bends 2423 and 2424 in between.

As described above, the vibration generating apparatus 2 according to another embodiment of the present invention has two elastic bodies 241 and 242 unlike the vibration generating apparatus 1 described above. It may further provide a vibration mode.

That is, the vibration generating apparatus 1 described above has only one vibration mode having one elastic body 14 and vibrating in the x-axis and y-axis directions, but the vibration generating device 2 according to another embodiment includes a plurality of vibration generating apparatuses. The elastic bodies 241 and 242 are further provided to provide a vibration mode in the z-axis direction.

According to another embodiment of the present invention, the vibration generating device 2 includes a plurality of electromagnetic force generating units 20, 21, each of the electromagnetic force generating units 20, 21 are the direction of action of the generated electromagnetic force each other It may be provided to be different.

For example, one of the electromagnetic force generating units 20 and 21 of the vibration generating device 2 shown in FIGS. 13 to 15 has the arrangement of the coil and the magnetic body as shown in FIG. 16, and the other is the coil as shown in FIG. 17. And by arranging to have the arrangement of the magnetic body, it is possible to implement a number of different vibrations.

For example, when the electromagnetic force generator 20 of FIG. 16 generates an electromagnetic force and acts on the vibrator 22, as shown in FIG. 18, the vibrator 22 may vibrate in a horizontal direction, that is, in an x-axis direction. Can be.

Likewise, when the electromagnetic force generator 21 of FIG. 17 generates an electromagnetic force to act on the vibrator 22, as shown in FIG. 19, the vibrator 22 may vibrate in the front-rear direction, that is, the z-axis direction. .

As such, the vibration generating apparatus 2 of the present invention includes a plurality of electromagnetic force generating units 20 and 21, and implements a plurality of different vibration modes by varying the direction of action of the electromagnetic force generated by each electromagnetic force generating unit. Can be.

According to the exemplary embodiment, when the two electromagnetic force generators 20 and 21 act on the electromagnetic force in the z-axis direction, but the two electromagnetic forces act in the opposite directions, that is, one electromagnetic force generator 20 corresponds to the amount of the z-axis. When the electromagnetic force is generated in the direction of and the other electromagnetic force generator 21 generates the electromagnetic force in the negative direction of the z axis, as shown in FIG. 20, the vibrator 22 has the x axis as the central axis. You can do rotational movements.

That is, according to another embodiment of the present invention, two or more different vibration modes may be implemented using one vibrator 22 and two electromagnetic force generators 20 and 21.

The plurality of vibration modes have different natural frequencies, and the vibrator 22 may vibrate at different vibration frequencies according to frequencies of driving power applied to the electromagnetic force generating units 20 and 21.

For example, the natural frequency of the vibration mode in the x-axis direction as shown in FIG. 18 is f1, the natural frequency of the vibration mode in the z-axis direction as shown in FIG. 19 is f2, and the rotational motion about the x-axis as shown in FIG. When the natural frequency is f3, one or more vibration modes may be output according to the frequency of the driving power applied to the electromagnetic force generating units 20 and 21.

That is, when driving power having a frequency of f1 is applied to the electromagnetic force generating units 20 and 21, the vibrator 22 resonates in the x-axis direction to generate vibration in a first vibration mode, and the electromagnetic force generating unit ( When a driving power source having a frequency of f 2 is applied to 20 and 21, the vibrator 22 resonates in the z-axis direction to generate vibration in a second vibration mode, and the electromagnetic force generating unit 20 and 21 generates When a driving power source having a frequency is applied, the vibrator 22 resonates to perform a rotational motion about the x-axis to generate vibration in a third vibration mode.

As such, by controlling the frequencies of the driving power applied to the electromagnetic force generating units 20 and 21, a plurality of vibrations having different vibration frequencies and vibrating in different directions may be generated.

21 is a graph showing the amount of vibration of the vibration generating device 2 with respect to the frequency of the driving power supply according to the embodiment of the present invention.

As shown in FIG. 21, the vibration generating apparatus 2 according to another embodiment of the present invention may include three vibration modes having different natural frequencies f1, f2, and f3, and any one of f1 to f3. The driving power having a frequency of may be applied to the electromagnetic force generating units 20 and 21 to generate vibration in any one of three modes.

That is, if the frequency of the driving power is f1, the vibrator 22 vibrates in the x direction, and if the frequency of the driving power is f2, the vibrator 22 will vibrate in the z direction, and if the frequency of the driving power is f3 The vibrator 22 will vibrate to make a rotational movement about the x axis.

According to an embodiment, the driving power may be applied to the electromagnetic force generating units 20 and 21 in a waveform obtained by synthesizing the frequencies of f1 to f3.

In this case, the vibrator 12 may vibrate in a synthesized direction by combining rotational motions based on the x direction, the z direction, and the x axis, thereby providing a vibration effect having a feeling different from that of the single direction vibration.

22 is a perspective view of a vibration generating device 2 according to another embodiment of the present invention.

Unlike the vibration generating device 2 of FIGS. 13 to 15, the vibration generating device 2 illustrated in FIG. 22 has a magnetic body 202 of the electromagnetic force generating units 20 and 21 disposed and transmitted to a hole in the vibrator 22. It is fixed to the member 23, the coil (201, 211) is coupled to the vibrator 22 is a structure for transmitting the electromagnetic force.

That is, in the vibration generating device 2 of FIGS. 13 to 15, the coil 211 is disposed in the hole and is fixed to the transmission member 23, and the magnetic bodies 202 and 212 are coupled to the vibrator 22. The device is an embodiment in which the positions of the coil and the magnetic body are interchanged.

According to an embodiment, as shown in FIG. 22, the magnetic body may be configured as one, but is not limited thereto and may be provided as many as the electromagnetic force generating units 20 and 21.

According to the present invention, two or more different vibration modes may be implemented using one vibrator. As a result, the weight and size of the vibration generating device can be reduced to provide a user with various vibration feelings with a lightweight and compact vibration element.

23 is a block diagram of a mobile terminal equipped with a vibration generating device according to an embodiment of the present invention.

The mobile terminal can be implemented in various forms. For example, the mobile terminal described herein may be a mobile phone, a smart phone, a notebook computer, a digital broadcasting terminal, a personal digital assistant (PDA), a portable multimedia player (PMP), navigation, or the like. have.

The illustrated mobile terminal 100 includes a wireless communication unit 110, an A / V input unit 120, a user input unit 130, a sensing unit 140, an output unit 150, a memory 160, The interface unit 170 may include a controller 180, a vibration generator 1, and a power supply 190. 23 illustrates a mobile terminal having various components. However, not all illustrated components are required. The mobile terminal may be implemented by more components than the illustrated components, or the mobile terminal may be implemented by fewer components.

Hereinafter, the components will be described in turn.

The wireless communication unit 110 may include one or more components for wireless communication between the mobile terminal 100 and the wireless communication system or wireless communication between the mobile terminal 100 and a network in which the mobile terminal 100 is located. For example, the wireless communication unit 110 may include a broadcast receiving module 111, a mobile communication module 112, a wireless Internet module 113, a short range communication module 114, and a location information module 115 .

The broadcast receiving module 111 receives a broadcast signal and / or broadcast related information from an external broadcast management server through a broadcast channel. The broadcast channel may include a satellite channel and a terrestrial channel. The broadcast management server may mean a server that generates and transmits a broadcast signal and / or broadcast related information or a server that receives a previously generated broadcast signal and / or broadcast related information and transmits the same to a terminal. The broadcast associated information may mean information related to a broadcast channel, a broadcast program, or a broadcast service provider. The broadcast signal may include not only a TV broadcast signal, a radio broadcast signal, and a data broadcast signal, but also a broadcast signal having a data broadcast signal combined with a TV broadcast signal or a radio broadcast signal.

Meanwhile, the broadcast related information may be provided through a mobile communication network, and in this case, may be received by the mobile communication module 112.

The broadcast related information may exist in various forms. For example, it may exist in the form of Electronic Program Guide (EPG) of Digital Multimedia Broadcasting (DMB) or Electronic Service Guide (ESG) of Digital Video Broadcast-Handheld (DVB-H).

The broadcast receiving module 111 receives broadcast signals using various broadcasting systems, and in particular, digital multimedia broadcasting-terrestrial (DMB-T), digital multimedia broadcasting-satellite (DMB-S), and media forward link (MediaFLO). Digital broadcast signals can be received using digital broadcasting systems such as only), digital video broadcast-handheld (DVB-H), integrated services digital broadcast-terrestrial (ISDB-T), and the like. Of course, the broadcast receiving module 111 is configured to be suitable for all broadcasting systems that provide broadcasting signals as well as the digital broadcasting system described above.

The broadcast signal and / or broadcast related information received through the broadcast receiving module 111 may be stored in the memory 160.

In addition, the mobile communication module 112 transmits and receives a radio signal with at least one of a base station, an external terminal, and a server on a mobile communication network. The wireless signal may include various types of data according to transmission and reception of a voice call signal, a video call call signal, or a text / multimedia message.

The wireless Internet module 113 is a module for wireless Internet access, and the wireless Internet module 113 can be built in or externally.

The short range communication module 114 refers to a module for short range communication. As a short range communication technology, Bluetooth, Radio Frequency Identification (RFID), Infrared Data Association (IrDA), Ultra Wideband (UWB), ZigBee, and the like may be used.

In addition, the location information module 115 is a module for checking or obtaining the location of the mobile terminal. One example is the Global Position System (GPS) module. The GPS module receives position information from a plurality of satellites. Here, the location information may include coordinate information represented by latitude and longitude. For example, the GPS module can measure the exact time and distance from three or more satellites and accurately calculate the current position by triangulating three different distances. A method of obtaining distance and time information from three satellites and correcting the error with one satellite may be used. In particular, the GPS module can obtain not only the location of latitude, longitude, and altitude but also accurate time together with three-dimensional speed information from the location information received from the satellite.

Meanwhile, the A / V input unit 120 is for inputting an audio signal or a video signal, and may include a camera 121 and a microphone 122. The camera 121 processes image frames such as still images or moving images obtained by an image sensor in a video call mode or a photographing mode. The processed image frame may be displayed on the display unit 151.

The image frame processed by the camera 121 may be stored in the memory 160 or transmitted to the outside through the wireless communication unit 110. Two or more cameras 121 may be provided according to the configuration aspect of the terminal.

The microphone 122 receives an external sound signal by a microphone in a call mode, a recording mode, a voice recognition mode, etc., and processes the external sound signal into electrical voice data. The processed voice data may be converted into a form transmittable to the mobile communication base station through the mobile communication module 112 and output in the call mode. The microphone 122 may implement various noise removing algorithms for removing noise generated in the process of receiving an external sound signal.

The user input unit 130 generates input data for the user to control the operation of the terminal. The user input unit 130 may include a key pad dome switch, a touch pad (static pressure / capacitance), a jog wheel, a jog switch, and the like. In particular, when the touch pad has a mutual layer structure with the display unit 151 described later, this may be referred to as a touch screen.

The sensing unit 140 detects a current state of the mobile terminal 100 such as an open / closed state of the mobile terminal 100, a location of the mobile terminal 100, presence or absence of a user contact, orientation of the mobile terminal, acceleration / deceleration of the mobile terminal, and the like. To generate a sensing signal for controlling the operation of the mobile terminal 100. For example, when the mobile terminal 100 is in the form of a slide phone, it may sense whether the slide phone is opened or closed. In addition, it is responsible for sensing functions related to whether the power supply unit 190 is supplied with power or whether the interface unit 170 is coupled to an external device.

The interface unit 170 serves as an interface with all external devices connected to the mobile terminal 100. For example, wired / wireless headset ports, external charger ports, wired / wireless data ports, memory card ports, ports for connecting devices with identification modules, audio input / output (I / O) ports, Video I / O (Input / Output) port, earphone port, etc. may be included.

Here, the identification module is a chip that stores various types of information for authenticating the use authority of the mobile terminal 100, and includes a user identification module (UIM) and a subscriber identify module (SIM). ), A Universal Subscriber Identity Module (“USIM”), and the like. In addition, the device equipped with the identification module (hereinafter, 'identification device') may be manufactured in the form of a smart card. Accordingly, the identification device can be connected to the terminal 100 through the port. The interface unit 170 receives data from an external device or receives power and transmits the data to each component inside the mobile terminal 100 or transmits the data inside the mobile terminal 100 to an external device.

The output unit 150 is for outputting an audio signal, a video signal, or an alarm signal. The output unit 150 may include a display unit 151, a sound output module 152, an alarm unit 153, and the like.

The display unit 151 displays and outputs information processed by the mobile terminal 100. For example, when the mobile terminal is in a call mode, a user interface (UI) or a graphic user interface (GUI) related to a call is displayed. When the mobile terminal 100 is in a video call mode or a photographing mode, the mobile terminal 100 displays a photographed and / or received image, a UI, or a GUI.

Meanwhile, as described above, when the display unit 13 and the touch pad form a mutual layer structure to form a touch screen, the display unit 151 may be used as an input device in addition to the output device. The display unit 151 may be a liquid crystal display, a thin film transistor-liquid crystal display, an organic light-emitting diode, a flexible display, or a three-dimensional display. 3D display). In addition, two or more display units 151 may exist according to the implementation form of the mobile terminal 100. For example, an external display unit (not shown) and an internal display unit (not shown) may be simultaneously provided in the mobile terminal 100.

The sound output module 152 outputs audio data received from the wireless communication unit 110 or stored in the memory 160 in a call signal reception, a call mode or a recording mode, a voice recognition mode, a broadcast reception mode, and the like. In addition, the sound output module 152 outputs a sound signal related to a function (eg, a call signal reception sound, a message reception sound, etc.) performed in the mobile terminal 100. The sound output module 152 may include a speaker, a buzzer, and the like.

The alarm unit 153 outputs a signal for notifying occurrence of an event of the mobile terminal 100. Examples of events occurring in the mobile terminal include call signal reception, message reception, and key signal input. The alarm unit 153 may output a signal for notifying occurrence of an event in a form other than an audio signal or a video signal. For example, the signal may be output in the form of vibration. When a call signal is received or a message is received, the alarm unit 153 may output a vibration to inform this. Alternatively, when a key signal is input, the alarm unit 153 may output a vibration in response to the key signal input. Through the vibration output as described above, the user can recognize the occurrence of the event. Of course, the signal for notification of event occurrence may be output through the display unit 151 or the voice output module 152.

The memory 160 may store a program for processing and controlling the controller 180 and may provide a function for temporarily storing input / output data (for example, a phone book, a message, a still image, a video, etc.). It can also be done.

The memory 160 may be a flash memory type, a hard disk type, a multimedia card micro type, a card type memory (for example, SD or XD memory), RAM Random Access Memory (RAM) Static Random Access Memory (SRAM), Read-Only Memory (ROM), Electrically Erasable Programmable Read-Only Memory (EEPROM), Programmable Read-Only Memory (PROM) magnetic memory, It may include at least one type of storage medium of the optical disk. In addition, the mobile terminal 100 may operate a web storage that performs a storage function of the memory 150 on the Internet.

The controller 180 typically controls the overall operation of the mobile terminal. For example, perform related control and processing for voice calls, data communications, video calls, and the like. In addition, the control unit 180 may include a multimedia module 181 for multimedia playback. The multimedia module 181 may be implemented in the controller 180 or may be implemented separately from the controller 180.

As described above, the vibration generator 1 generates vibration in response to the user's input or the reception of a call to provide tactile feedback to the user.

The structure and operation of the vibration generator 1 are as described above, the mobile terminal 100 may be provided with one or more vibration generator (1).

For example, as illustrated in FIG. 24, the mobile terminal 100 may include one vibration generator 1 to generate vibration.

According to an embodiment, as shown in FIG. 25, the mobile terminal 100 may include a plurality of vibration generating units 1 to generate vibration.

In FIG. 25, the mobile terminal 100 mounts the vibration generators 1 on the upper, lower, left, and right sides, respectively, but according to an embodiment, the vibration generators 1 are mounted on the corners of the mobile terminal 100. It is also possible, but the number and location of mounting is not limited thereto.

The operation of the vibration generator 1 is controlled by the controller 140.

The power supply unit 190 receives an external power source and an internal power source under the control of the controller 180 to supply power for operation of each component.

Although the present invention has been described through the above embodiments, the above embodiments are merely intended to illustrate the spirit of the present invention, and the present invention is not limited thereto. Those skilled in the art will appreciate that various modifications may be made to the embodiments described above. The scope of the invention is defined only by the interpretation of the appended claims.

1 and 2 are perspective views of a vibration generating device according to an embodiment of the present invention.

3 is an exploded perspective view of a vibration generating device according to an embodiment of the present invention.

4 is a front view of a vibration generating device according to an embodiment of the present invention.

5 is a front view and a side view illustrating an electromagnetic force generating unit of the vibration generating device according to an embodiment of the present invention.

6 and 7 are front views illustrating vibration generation of a vibration generating device according to an embodiment of the present invention.

8 is a graph of the amount of vibration with respect to the drive power frequency of the vibration generating device according to an embodiment of the present invention.

9 and 10 are front views illustrating the spring shape of the vibration generating device according to an embodiment of the present invention.

11 and 12 are perspective views of a vibration generating device according to an embodiment of the present invention.

13 to 15 are a perspective view, an exploded perspective view and a front view of a vibration generating device according to another embodiment of the present invention.

16 and 17 are front and perspective views illustrating an electromagnetic force generating unit of a vibration generating device according to another embodiment of the present invention.

18 to 20 are front and side views illustrating vibration generation of a vibration generating device according to another embodiment of the present invention.

21 is a graph of the amount of vibration with respect to the drive power frequency of the vibration generating device according to another embodiment of the present invention.

22 is a perspective view of a vibration generating device according to another embodiment of the present invention.

23 is a block diagram of a mobile terminal provided with a vibration generating unit according to an embodiment of the present invention.

24 and 25 are front views of a mobile terminal provided with a vibration generating unit according to an embodiment of the present invention.

Claims (10)

At least one electromagnetic force generating unit configured to generate an electromagnetic force by receiving driving power; A vibrator vibrating in a predetermined direction by the electromagnetic force and vibrating in different directions according to the frequency of the driving power source; Transmission member for transmitting the vibration of the vibrator to the outside; And At least one spring mounted between the vibrator and the transmission member and having two or more bends; Vibration generating device comprising a. The method of claim 1, wherein the electromagnetic force generating unit, A coil generating the magnetic flux by receiving the driving power; And A magnetic material that interacts with the magnetic flux to generate attraction or repulsive force; Vibration generating device comprising a. The method of claim 1, wherein the electromagnetic force generating unit, A coil through which current is supplied by the driving power; And A magnetic body that forms a magnetic field to interact with the current to generate a Lorentz force; Vibration generating device comprising a. The method of claim 1, The vibrator is a vibration generating device in which a hole in which the electromagnetic force generating unit is disposed is formed in the center. The method of claim 2 or 3, Any one of the coil or the magnetic material is coupled to the vibrator generating device. The method of claim 1, The electromagnetic force generating unit is a vibration generating device is provided so that the direction of operation of the electromagnetic force to form a predetermined angle with the vibration direction of the vibrator. The method of claim 1, And the spring is bent by the bend to surround the vibrator. The method of claim 1, A first spring having one end attached to one surface of the vibrator and the other end attached to one surface of the transmission member; And A second elastic body having one end attached to the other surface of the vibrator and the other end attached to the other surface of the transmission member; Vibration generating device comprising a. The method of claim 1, When the electromagnetic force generating unit is two or more, the direction of operation of the electromagnetic force generated by each electromagnetic force generating unit is different vibration generating device. In a mobile terminal, A display unit which displays a predetermined image; A user input unit to receive an input from a user; At least one electromagnetic force generating unit configured to generate an electromagnetic force by receiving driving power; A vibrator vibrating in a predetermined direction by the electromagnetic force and vibrating in different directions according to the frequency of the driving power source; Transmission member for transmitting the vibration of the vibrator to the outside; And At least one spring mounted between the vibrator and the transmission member and having two or more bends; Vibration generating unit for generating a vibration having a specific pattern according to the user's input; And A control unit controlling driving power applied to the electromagnetic force generating unit according to a user input; Mobile terminal comprising a.

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