KR100804023B1 - Vibration generator - Google Patents

Abstract

The present invention relates to a vibration generating device, and an object of the present invention is to provide a vibration generating device that increases the vibration force by allowing the vibrating body to double vibration and improves the vibration transmission efficiency by concentrating the vibration force on the case. The present invention for achieving the above object is a magnetic force change occurs in the coil when an electric signal is input, the vibration generating device vibrating while the coil and the magnet repulsed / suctioned by the changing magnetic force, the interaction between the coil and the magnet Primary movement means for supporting any one flowing by; It is characterized in that it comprises a; secondary support means for receiving the exercise force of the primary movement means while also supporting the primary movement means is repeated up and down repetitive movement; According to the present invention as described above, when the coil and the magnet are repulsed / suctioned due to the change in the magnetic force of the coil, the primary motion means for supporting any one of the coil and the magnet that is movable starts the vertical movement. Then, the kinetic force is transmitted to the secondary exercise means supporting the primary exercise means, and thus the secondary exercise means also starts the up and down repetitive movement. Therefore, the up and down repetitive movement force of the primary movement means is added to the up and down repetition movement force of the secondary movement means, resulting in an effect of increasing the vibration force.

Description

Vibration Generator {VIBRATOR}

1 is an exploded perspective view showing a configuration of the present invention.

2 is a cross-sectional view showing the configuration of the present invention.

3 a and b are cross-sectional views showing the operating state of the present invention.

4 is a sectional view showing another embodiment of the present invention.

5 is a sectional view showing another embodiment of the present invention.

6 is a cross-sectional view showing yet another embodiment of the present invention.

       <Description of Signs of Major Parts of Drawings>

10: vibration generating device 11: primary movement means

12: secondary movement means 12a: elastic frame

13 support member 14 fixed member

1: Case 1a: Body

1b: cover 1c: step

1d: axis

The present invention relates to a vibration generating device, and more particularly, to a vibration generating device in which a magnetic force change occurs in a coil when an electrical signal is input, and the coil and the magnet vibrate while being repulsed / sucked by each other by a changing magnetic force.

In general, portable communication terminals such as mobile phones (cellular phones and PCS phones), PDAs, and notebook computers are equipped with an electronic acoustic transducer to enable sound output.

The electro-acoustic transducer includes a speaker receiver buzzer capable of outputting voice and sound, and is largely classified into a vibration generating device that generates vibration as well as sound and outputs sound in three dimensions.

The vibration generator includes a motor driving method for generating vibration by centrifugal force of a rotation pin eccentrically fixed to a rotating shaft of the motor, and a vibrator vibrating linearly in a coil generating magnetic force by an electric signal (power source) applied thereto. The solenoid method that generates the is representative.

For reference, the solenoid has a dictionary meaning of "coil wound in a tubular", and the tubular coil is called a solenoid coil, and the solenoid represents a converter that converts electrical energy into mechanical energy by magnetic force generated in the air gap. .

Most solenoids are magnetic circuits made of a metal vibrator that is moved by a magnetic force around the coil, a case surrounding the outside, and a magnetic material corresponding to the core inside the coil. When a current is applied to the inner coil, the solenoid is applied to the magnetic circuit surrounding the coil. The magnetic flux flows, and the magnetic flux in the magnetic circuit generates a magnetic force on the vibrator to operate the solenoid.

Conventional vibration generating device using the solenoid as described above has the advantage of less waste of vibration energy than the motor driving method, and when the AC signal is applied, mechanical resonance occurs due to the physical characteristics of the magnetic circuit and the vibrator at a specific frequency, and the resonance frequency According to the change in the vibration force, that is, there is an advantage that can adjust the magnitude of the vibration force, while the components are very complicated, due to this has a problem of low manufacturability and high manufacturing cost.

On the other hand, the motor drive method, in particular, the coin-type vibration generating device to obtain a vibration force through the eccentric rotation movement, or to obtain a vibration force through the linear reciprocating motion force.

However, it was impossible to obtain a large vibration force in the eccentric rotational structure of the coin-type vibration generating device, there was a problem in the linear reciprocating structure also has a limitation in maximizing the vibration force because the movement distance is short.

The present invention for solving the above problems is to provide a vibration generating device to increase the vibration force by allowing the vibrating body to double vibration, and to improve the vibration transmission efficiency by concentrating the vibration force in the case.

The present invention for achieving the above object is a magnetic force change occurs in the coil when an electric signal is input, the vibration generating device vibrating while the coil and the magnet repulsed / suctioned by the changing magnetic force, the interaction between the coil and the magnet Primary movement means for supporting any one flowing by; It characterized in that it comprises a ;; the primary movement means is supported to repeat the vertical movement, the secondary movement means for receiving the exercise force of the primary movement means also repeated up and down movement.

According to the present invention as described above, when the coil and the magnet are repulsed / suctioned due to the change in the magnetic force of the coil, the primary motion means for supporting any one of the coil and the magnet that is movable starts the vertical movement.

Then, the kinetic force is transmitted to the secondary exercise means supporting the primary exercise means, and thus the secondary exercise means also starts the up and down repetitive movement.

Therefore, the vertical repeating force of the secondary movement means is added to the vertical repeating force of the primary movement means.

Before describing the present invention as described in detail, which is a reference for the description of the present invention, Figure 1 is an exploded perspective view showing the configuration of the present invention, Figure 2 is a cross-sectional view showing the configuration of the present invention, 3 is a cross-sectional view showing an operating state of the present invention, Figure 4 is a cross-sectional view showing another embodiment of the present invention, Figure 5 is a cross-sectional view showing another embodiment of the present invention, Figure 6 is shown in a cross-sectional view showing another embodiment of the present invention.

The present invention will be described below with reference to the accompanying drawings presented as above.

First, as shown in FIGS. 1 and 2 of the present invention, when an electric signal is input, a change in magnetic force occurs in the coil C, and the coil C and the magnet M mutually react by the changing magnetic force. A vibration generating device (10) vibrating while being sucked, comprising: primary movement means (11) for supporting any one flowing by interaction between the coil (C) and the magnet (M); While supporting the primary movement means 11 to repeat the vertical movement, the secondary movement means 12 to receive the movement force of the primary movement means 11 also repeated vertical movement;

Here, the coil C described above may be, for example, an annular voice coil fixed to the case 1 of the vibration generating device 10.

In this case, the terminal of the coil (C) is connected to an external electrical signal supply source, may be soldered to the PCB provided in the case (1), it may be connected in the form of contacts through the terminal.

In this case, the case 1 may be a main body 1a or a cover 1b.

Meanwhile, the magnet M described above in the present invention may be, for example, an annular magnet 1 · 2 (M1) (M2) having a concentric circle and having a different diameter to have a gap.

In this way, the magnetic force applied to the coil C is increased, and the vibration force can be improved significantly.

In addition, the magnet M may be, for example, a single magnet.

In this case, the vibration force may be lowered, but the diameter of the vibration generator 10 may be reduced, and thus the vibration force may be used as the small vibration generator 10.

In addition, the magnet (M) is seated on the top plate (T) by acting as a magnetic path (path) for supplying the magnetic flux of the magnet (M) to the magnetic pole, thereby concentrating the magnetic force.

In this case, when the magnet M is a magnet 1,2 (M1) (M2), it is preferable to mount the top plate 1,2 (T1) (T2) on each magnet.

On the other hand, the above-described primary motion means 11 of the present invention may be, for example, yoke, may be a leaf spring having a lower coefficient of carbohydrate compared to the secondary motion means 12, may be a synthetic resin vibrating body have.

When the primary vibrating means 11 is a yoke or a leaf spring, it is preferable to seat the magnet (M), and in the case of a vibrating body made of synthetic resin, it is preferable to seat the coil.

In this case, the primary movement means 11 may be penetrated by a central portion, or penetrated by a central portion, and may be bent in one direction.

In addition, the primary movement means 11 may support the magnet (M), it may be a coil (C). However, when mounting the magnet (M) in view of the correlation between the weight and vibration force, it is preferable to apply this because the vibration force is excellent.

On the other hand, the above-described secondary movement means 12 of the present invention, for example, relative to the primary movement means 11 that wraps from one side of the primary movement means 11 to the outer circumferential surface has a relatively high ballistic coefficient It may be a leaf spring.

At this time, the secondary movement means 12 is the center is fixed to the case (1), the outer periphery protrudes in one direction, the central portion and the outer peripheral portion of at least three or more elastic frames (curving in an arc shape ( It may be connected by 12a).

The elastic frame 12a lengthens its forming length to improve the low frequency portion.

In addition, the outer circumferential end of the secondary movement means 12 may include a magnet M including the primary movement means 11 or the primary movement means 11 that is bent and seated inward.

At this time, the outer circumference of the secondary movement means 12 that is bent inwardly is fixed to surround the top plate (T) upper surface seated on the magnet (M), the secondary movement means (to the top plate (T) The same height may be formed by forming a step of the same height as the thickness of 12), or may be directly wrapped around the top surface of the top plate T without the step.

In addition, a support for securing a range of independent repetitive movement of the primary movement means 11 relative to the secondary movement means 12 between the secondary movement means 12 and the lower outer peripheral surface of the primary movement means 11. The member 13 may be provided.

In this case, the support member 13 may be, for example, a ring for supporting the lower peripheral edge of the primary movement means 11 with respect to the secondary movement means 12, and the lower outer peripheral edge of the primary movement means 11. It may be a stone jaw formed on the surface, it may be a stone jaw formed on the inner peripheral surface of the secondary movement means (12).

In addition, the secondary movement means 12 may be fixed by injection molding the outer periphery of the inner peripheral surface of the main body (1a), it may be fixed to the ring is inserted into both sides of the outer peripheral surface.

In addition, a stepped portion 1c may be formed at the center portion of the main body 1a of the case 1 while protruding inward and penetrating the center thereof.

In addition, a rod-shaped shaft 1d having a groove formed at an end portion corresponding to a through hole formed at a step of the main body 1a may be formed at a central portion of one side of the cover 1b of the case 1. .

In this case, the stepped end of the stepped shaft 1d formed at the center of one side of the cover 1b press-fixes the secondary movement means 12 to the stepped step 1c of the main body 1a. Through the through-hole formed in the central portion of the secondary movement means 12 and the stepped portion 1c of the main body 1a and exposed to the outside of the main body 1a, the end is riveted by pressing, so that the lid 1b and The main body 1a is completed with casing.

Referring to the operation of the present invention configured as described above are as follows.

First, in the present invention as shown in Figs. 1 and 2 of the accompanying drawings, when an electric signal alternately input to the coil C is input from the outside, the coil C and the magnet M, that is, the magnet, are changed by the magnetic force change. 1 (M1) and magnet 2 (M2) will be repulsive / suction action.

In this case, as shown in FIGS. 3A and 3B, the coil C fixed to the cover 1b is in a fixed state, and the magnet 1 M1 supported by the primary movement means 11 and The magnet M2 is repeatedly moved up and down.

Then, the primary movement means 11 supporting the magnet 1 (M1) and the magnet (M2) also starts the up and down repetitive movement. At this time, the movement of the primary movement means is a vertical up and down repetitive movement, straight up and down reciprocating motion.

Then, the kinetic force is transmitted to the secondary movement means 12 supporting the primary movement means 11, so that the secondary movement means 12 also repeats the vertical movement in the state in which the center is supported by the main body 1a. At the start, the vibration force is transmitted to the case 1. At this time, the second movement of the movement means 12 is repeated up and down movement, wing movement.

In the present invention as described above, the vertical repetitive movement force of the secondary movement means 12 is added to the vertical repetition movement force of the primary movement means 11, thereby increasing the vibration force.

This has the same effect in the embodiment as shown in FIGS. 4 and 5.

At this time, the embodiment shown in Figure 4 attached to the outer circumference of the secondary movement means 12 that is bent inwardly is wrapped around the top plate (T) that is seated on the upper portion of the magnet (M) Structure.

And, the embodiment shown in FIG. 5 is a rivet protruding through a hole formed in the step (1c) of the main body (1a) through a separate fixing member 14 through the central portion of the secondary movement means 12 Structure.

On the other hand, the present invention, as shown in Figure 6, the outer periphery of the secondary movement means 12 is impregnated in the main body (1a) is fixed, the primary movement means 11 and the magnet (M) and The top plate (T) is in contact with the outer circumferential surface of the inner annulus (12b) of the secondary movement means 12, it may be fixed through the bending of the end.

In the present invention as described above, since the voice coil is applied, vibration is added or subtracted according to the sound signal, and may be used for sound transmission through bone conduction.

While the invention has been described and illustrated in connection with a preferred embodiment for illustrating the principles of the invention, the invention is not limited to the configuration and operation as such is shown and described.

Rather, it will be apparent to those skilled in the art that many changes and modifications to the present invention are possible without departing from the spirit and scope of the appended claims. Accordingly, all such suitable changes and modifications and equivalents should be considered to be within the scope of the present invention.

The present invention as described above is the present invention as described above, when the coil and the magnet repulsion / suction action by the change of the magnetic force of the coil, the primary movement means for supporting any one of the coil and the magnet that can be flowed starts up and down repetitive motion .

Then, the kinetic force is transmitted to the secondary exercise means supporting the primary exercise means, and thus the secondary exercise means also starts the up and down repetitive movement.

Therefore, the up and down repetitive movement force of the primary movement means is added to the up and down repetition movement force of the secondary movement means, resulting in an effect of increasing the vibration force.

Claims (26)

Protected by the outer case (1), when the electrical signal is input, the magnetic force change occurs in the coil (C), the vibration that vibrates while the coil (C) and the magnet (M) is repulsed / suctioned by the changing magnetic force A generator (10), comprising: primary movement means (11) for supporting any one flowing by interaction of the coil (C) and the magnet (M); While supporting the primary movement means 11 to repeat the vertical movement, the secondary movement means (12) to receive the movement force of the primary movement means 11 also repeated vertical movement; including, but the secondary movement means The support member 13 is provided between the 12 and the lower outer peripheral surface of the primary movement means 11 to secure the independent repeating movement range of the primary movement means 11 with respect to the secondary movement means 12. Vibration generating device characterized in that. The vibration generating device according to claim 1, wherein the coil (C) is an annular voice coil fixed to the case (1) of the vibration generating device (10). The vibration generating device according to claim 2, wherein the case (1) is a main body (1a) and a cover (1b). 2. The vibration generating device according to claim 1, wherein the magnet (M) is an annular magnet 1 · 2 (M1) (M2) having different diameters and having concentric circles to have a gap. delete The vibration generating device of claim 1, wherein a top plate (T) is mounted on the magnet (M). delete delete The vibration generating device according to claim 1, wherein the primary movement means is a yoke. The vibration generating device according to claim 1, wherein the primary movement means (11) is a leaf spring having a relatively low coefficient of elasticity compared to the secondary movement means (12). The vibration generating device according to claim 1, wherein the primary movement means (11) is a synthetic resin diaphragm. The vibration generating device according to any one of claims 1 to 9 or 10, wherein a magnet (M) is mounted on the primary movement means (11). The vibration generating device according to claim 1, wherein a coil is mounted on the primary movement means. The vibration generating device according to claim 1, wherein the primary movement means (11) is penetrated through a central portion thereof. The vibration generating device according to claim 1, wherein the primary movement means (11) is penetrated by a central portion and is bent in one direction. The method according to claim 1, wherein the secondary movement means 12 is a leaf spring having a relatively high coefficient of elasticity compared to the primary movement means 11 that wraps from one side of the primary movement means 11 to the outer peripheral surface Vibration generating device. According to claim 1, wherein the secondary movement means 12 has a center fixed to the case 1, the outer periphery protrudes in one direction, the center portion and the outer peripheral portion of at least three to draw a curve in an arc shape Vibration generating device characterized in that connected by the elastic frame (12a) or more. According to claim 1, wherein the outer peripheral upper end of the secondary movement means 12 is wrapped around the magnet (M) and the top plate (T) including the primary movement means 11 is bent inwardly seated Vibration generating device characterized in that. delete The vibration generating device according to claim 1, wherein the support member (13) is a ring for supporting the lower peripheral edge of the primary movement means (11) with respect to the secondary movement means (12). The vibration generating device according to claim 1, wherein the support member (13) is a stone jaw formed on the outer circumferential lower surface of the primary movement means (11). The vibration generating device according to claim 1, wherein the support member (13) is a stone step formed on the inner circumferential surface of the secondary movement means (12). The vibration generating device according to claim 1, wherein the secondary movement means (12) is formed by impregnating injection molding on the inner circumferential surface of the case (1). 4. The vibration generating device according to claim 3, wherein a stepped portion (1c) through which the center penetrates is formed in the central portion of the main body (1a) of the case (1). 25. The rod-shaped shaft (1d) according to claim 24, wherein a groove is formed at an end portion corresponding to a through hole formed in the step (1c) of the main body (1a) at a central portion of one side of the cover (1b) of the case (1). Vibration generating device characterized in that is formed. delete

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