KR100496005B1 - Sound-to-vibration conversion apparatus - Google Patents

Abstract

The present invention relates to an acoustic-vibration converting apparatus that converts an acoustic signal into vibration using an iron core and an inertial weight so as to hear sound through a bone diagram of a human body. The acoustic-vibration converter according to the present invention is located between two first magnetic means, which is formed so that the north pole and the south pole are formed in one plane to face each other in the housing, and the two first magnet means are located. An acoustic-vibration converting apparatus comprising a second magnetic means rotatably coupled to a central axis installed in parallel with the first magnetic means in a central portion of the housing, wherein either one of the first magnetic means and the second magnetic means has an acoustic signal. The electromagnet is characterized in that the electromagnet moves relative to the housing according to the interaction between the magnetic force formed on the electromagnet and the magnetic force of other magnet means by the acoustic signal applied to the electromagnet.

Description

Sound-to-vibration conversion apparatus

The present invention relates to an acoustic-vibration converting apparatus that converts an acoustic signal into vibration using an iron core and an inertial weight so as to hear sound through a bone diagram of a human body.

In the past, as a hearing device for the hearing impaired, a thing called a bone loudspeaker has been developed. This is an acoustic transducer that stimulates the auditory nerve by vibration of the skull instead of the auditory nerve stimulation caused by the eardrum so that the deaf person with a damaged eardrum can hear the sound. Basically, a goldos speaker is a speaker device that reproduces sound through a liquid or a solid body instead of air. Bone conduction acoustic listening device for the hearing impaired is disclosed in patent application No. 1994-4746 (filed Oct. 7, 1994).

On the other hand, it has been developed for the purpose of hearing listening for the hearing impaired, so-called "feeling speaker" that allows the user to feel the sound output from the speaker not by hearing, but by the human sense of touch. The haptic speaker converts sound into vibration and stimulates the auditory nerve as a vibration transmitted to the human body, and allows a user to hear lively and thrilling sound than a conventional acoustic speaker without giving a loud noise to others. These haptic speakers can be mounted on a car seat to meet the needs of audio enthusiasts and can be used in other gaming chairs, theaters, and the like.

However, conventionally, since the haptic speaker is manufactured using the structure of a general acoustic speaker as it is, high output was not obtained. Therefore, if the output is increased, the current flows a lot, which shortens the life of the coil due to heat generation. When the natural frequency of the oscillator coincides with the frequency of the amplified signal, the oscillator synchronizes, causing abnormal oscillation. There is a disadvantage that a frequency above a certain band cannot be output.

Applicants of the present invention has already made a number of patent applications (application number 10-2001-0026923, 10-2001-0026924, 10-2001-0026925) in order to improve the disadvantage of the conventional haptic speaker.

The present invention was devised to improve the shortcomings of the conventional haptic speaker, which is a bidirectional generated by applying an acoustic signal to an electromagnet using an I-shaped iron core attached to an inertial body by removing the structure of the conventional acoustic speaker. It is an object of the present invention to provide an acoustic-vibration converter that generates vibration energy by using tension and repulsive force between an electromagnetic force and a permanent magnet opposite thereto.

In particular, the applicant of the present invention can provide an acoustic vibrator of a structurally very thin form compared to the inventions already patented application, and also to provide a vibration-vibrating device that can vibrate in both directions instead of one direction. The purpose.

In order to achieve the above object, an acoustic-vibration converter according to the present invention comprises: a housing having at least two inner walls facing each other; A central axis installed to cross the central portion of the housing so as to be parallel to the inner wall of the housing, and two magnet means attached to two opposite inner walls of the housing, wherein the north pole and the south pole of each magnet means are the same as each inner wall; First magnet means positioned in a plane and disposed at right angles to the longitudinal direction of the central axis, wherein the N / S pole directions of the respective magnet means are equally located; An I-shaped magnet means positioned in the space between the two first magnet means, the N pole and the S pole is formed at both ends of the I-shaped body, the N pole and the S pole is the first magnetic means and Is located at a predetermined distance, the center of the magnet means is coupled to the central axis of the housing second magnet means installed to reciprocate in the same direction as the N / S pole magnetic direction of the first magnet means; Attached to both ends of the second magnetic means, respectively, the second magnetic means is composed of an inertial weight to increase the inertial force during the rotational movement to vibrate the housing. In such a configuration, one of the first magnet means and the second magnet means is composed of an electromagnet to which an acoustic signal is applied, whereby the magnetic force formed on the electromagnet by the acoustic signal applied to the electromagnet and the magnetic force of the other magnet means By action, the electromagnet rotates and the housing with relatively low inertia forces vibrates.

The first magnetic means may be a permanent magnet, and the second magnetic means may be an electromagnet. On the contrary, the first magnet means may be an electromagnet, and the second magnet means may be a permanent magnet.

Hereinafter, with reference to the accompanying drawings will be described in detail the configuration and operation of the preferred embodiment according to the present invention.

Example 1

1 is a plan view of a first embodiment of an acoustic-vibration converter according to the present invention, FIG. 2 is a side view and FIG. 3 is a perspective view.

The electromagnet 15 is fixed to the central portion of the housing 11 so as to be rotatable about the central axis 19. Since the acoustic signal output from the amplifying circuit is applied to the coil 23 wound on the electromagnet 15, the number of windings should be adjusted and wound to match the amplifying circuit. The method of fixing the electromagnet 15 to the housing 11 is not limited to the method of fixing to the central axis 19 as in this embodiment. What is necessary is just to fix the electromagnet 15 so that movement relative to the housing 11 may be performed.

On both sides of the housing 11 opposite to both ends of the electromagnet 15, magnet means in which the N pole 13 'and the S pole 13 are formed in one plane is fixed. In this embodiment, the S pole 13 has a structure located on the upper surface of the N pole 13 '. The magnet means may use an electromagnet as well as a permanent magnet. Hereinafter, the magnet means will be described on the premise that the magnet means is a permanent magnet.

Inertial weights 17 are attached to each side of both ends of the electromagnet 15. The inertial weight 17 serves to increase the inertia force according to the movement of the electromagnet 15 to allow the relatively light housing 11 to vibrate.

Hereinafter, the operation of the embodiment of the present invention having the above structure will be described.

When the acoustic signal output from the amplification circuit is applied to the coil 23, the polarity and magnetic strength of the electromagnet 15 is changed according to the amplitude and phase of the acoustic signal, and the attraction force and repulsion force with the permanent magnets 13 and 13 'act. The electromagnet 15 is to reciprocate, the direction of the reciprocating motion is the same as the arrow direction of FIG. That is, when the magnetic force of the N pole is generated in one direction of the electromagnet 15 in response to the application of the acoustic signal, the S pole 13 and the attraction force of the permanent magnet 13 are generated upward, and the S pole is opposite to the electromagnet 15. This occurs and conversely goes down. When the direction of the sound signal is reversed, the electromagnet 15 is moved upside down to generate a reciprocating motion. At this time, the reciprocating distance of the electromagnet 17 simulates the amplitude waveform of the acoustic signal.

In addition, as described above, an inertial weight 17 is attached to both ends of the electromagnet 15 to increase the inertia force of the reciprocating motion of the electromagnet 15. Therefore, when the electromagnet 15 tries to reciprocate around the rotation shaft 19, the permanent magnets 13 and 13 'and the housing 11 having relatively small inertial forces vibrate because of the weight of the inertial weight 17. . Thus, the vibration of the acoustic-vibration converter according to the present invention becomes even greater. When the housing 11 vibrates, vibration is transmitted to a seat, a bed, and a chair on which the housing 11 is installed, and the vibration stimulates the tactile sense of the human body.

Note that since the natural vibration frequency of the electromagnet 15 is changed according to the weight of the inertial weight 17, it is necessary to determine the exact frequency using an audio generator, etc., and insert a frequency trap device into the amplifier to adjust it. This will prevent distortion and oscillation during harmonic reproduction. The frequency trapping device may be easily implemented by those skilled in the art as a kind of filter for removing a specific frequency.

Example 2

4 is a plan view of a second embodiment of an acoustic-vibration converter according to the present invention, FIG. 5 is a side view and FIG. 6 is a perspective view.

The difference from the first embodiment is that the positions of the permanent magnets and the electromagnets are changed. That is, the fixed magnet 35 is fixed to the center portion of the housing 31 so as to be rotatable about the central axis 39, and both sides of the housing 31 facing both ends of the fixed magnet 35 are electromagnets ( 33) was fixed. The method of fixing the stator magnet 35 to the housing 31 is not limited to the method of fixing the rotatably to the central axis 39 as in the first embodiment. What is necessary is just to fix the stator magnet 35 so that relative movement with respect to the housing 31 is possible. The electromagnet 33 is formed by winding the coil 36 on an I-shaped iron core. Reference numeral 34 denotes a coil box. The acoustic signal output from the acoustic device is applied to the coil 36 of the electromagnet 33.

The direction of the magnetic force generated in the electromagnet is changed according to the phase of the acoustic signal applied to the electromagnet 33, and the strength of the magnetic force is changed in accordance with the amplitude of the acoustic signal. When the direction and intensity of the magnetic force generated in the electromagnet 33 is changed, the stator magnet 35 is moved up and down by interaction with the magnetic force generated in the stator magnet 35 located between the electromagnets 33 (FIG. 5 and FIG. 5). 6 arrow direction) will vibrate.

Also in the second embodiment, the inertia force of the stator magnet 35 was increased by attaching the inertial weight 37 symmetrically to both sides of the stator magnet 35 as in the first embodiment. When the inertia force of the stator magnet 35 is increased, when the stator magnet 35 tries to reciprocate about the rotation axis 39, the inertia force of the inertia force relatively small due to the weight of the inertia weight 37 and the housing ( 31) vibrates. Thus, the vibration of the acoustic-vibration converter according to the present invention becomes even greater. When the housing 31 vibrates, vibration is transmitted to seats, beds, and chairs in which the housing 31 is installed, and the vibration stimulates the tactile sense of the human body.

In the first and second embodiments, if the rotation shaft 39 is not positioned at the center of the electromagnet 15 or the permanent magnet 35, but moved to one side by about 80%, it can function as a vibration sensor. There is an effect that can be applied to the approach detection type alarm for detecting gas pipe vibration or footprint vibration using this.

In the above, the configuration and operation of the embodiments of the present invention have been described, but the technical scope of the present invention is not limited to the above embodiments and should not be interpreted. The technical scope of the present invention should be determined by the reasonable interpretation of the matter described in the claims.

The acoustic-vibration converting apparatus according to the present invention, unlike the conventional sound speaker retrofit method, adopts an electromagnet using an iron core core and an inertial weight to obtain a large output vibration energy and to reduce heat loss generated in the electromagnet. It can be minimized. In addition, there is an advantage that the structure is simple and the productivity is low because the productivity is good. In particular, the sound-vibration converter according to the present invention has an effect of providing a very thin and compact sound-vibration converter because it uses an electromagnet using an I-shaped core.

The sound-vibration converter of the present invention can be built in a vehicle seat to satisfy the needs of car audio enthusiasts, and can be mounted on a computer, game console, theater chair, vehicle floor or ceiling, wall, etc. You can feel the powerful sound. In addition, it is embedded in the mattress of the bed is effective for induction of sleep in pregnant women's prenatal or insomnia patients, it is possible to produce a dramatic atmosphere of the couple life.

Equipped with an acoustic-vibration converter according to the present invention on the keyboard of the electronic piano, the user can feel the vibration directly from the hand pressing the keyboard, so that hearing impaired people can play the piano while feeling the sound, vibration of the electronic piano This eliminates the need to stick to expensive pianos. In addition, the acoustic-vibration converter according to the present invention is applicable to the acoustic resonance device. That is, it is possible to prevent eavesdropping by attenuating vehicle noise, toilet noise, etc., and attaching to a wall or a window of a conference room.

In addition, it can be used for communication means using a liquid or a solid medium, it can be used to relieve fatigue of mind and body as a massage function using the sound rate rather than a simple vibration of the conventional motor massager.

1 is a plan view of a first embodiment according to the present invention;

2 is a cross-sectional view of the first embodiment according to the present invention.

3 is a perspective view of a first embodiment according to the present invention;

4 is a plan view of a second embodiment according to the present invention;

Fig. 5 is a sectional view of a second embodiment according to the present invention.

6 is a perspective view of a second embodiment according to the present invention;

<Description of Major Reference Drawings>

11, 31 housing, 13, 13 ', 35 permanent magnets, 15, 33 electromagnets, 17, 37 inertia weights, 19, 39 center axis, 21, 41 bearings, 23, 34 coils

Claims (5)

A housing having at least two inner walls facing each other, A central axis installed to cross the central portion of the housing so as to be parallel to the inner wall of the housing; Two magnet means attached to two opposing inner walls of the housing, wherein the N pole and the S pole of each magnet means are located on the same plane as each inner wall and are disposed perpendicular to the longitudinal direction of the central axis. The N / S pole direction of the first magnetic means is the same, An I-shaped magnet means positioned in the space between the two first magnet means, the N pole and the S pole is formed at both ends of the I-shaped body, the N pole and the S pole is the first magnetic means and Is located at a predetermined interval, the center of the magnet means is coupled to the central axis of the housing second magnet means installed to reciprocate in the same direction as the N / S pole magnetic direction of the first magnet means, An acoustic-vibration converting apparatus attached to both ends of the second magnetic means, the second magnetic means including an inertial weight to increase the inertial force during rotational movement so that the housing vibrates. One of the first magnet means and the second magnet means consists of an electromagnet to which an acoustic signal is applied, and according to the interaction between the magnetic force formed on the electromagnet by the acoustic signal applied to the electromagnet and the magnetic force of the other magnet means, An electromagnetic-vibration converter, characterized in that the electromagnet rotates and the housing with relatively low inertia forces vibrates. The method of claim 1, And said first magnetic means is a permanent magnet and said second magnetic means is an electromagnet. The method of claim 1, And said first magnetic means is an electromagnet and said second magnetic means is a permanent magnet. delete delete