KR20030011745A - Two-way micro speaker for mobile communication terminal increased electromagnetic wave - Google Patents

Abstract

PURPOSE: A bilateral micro speaker for a mobile communication terminal having an increased electromagnetic wave is provided to precisely listen a receiving sound of a receiver in a state that a user wears a hearing aid by transmitting an electromagnetic wave to the hearing aid and transmitting a normal received sound to ears by the hearing aid. CONSTITUTION: A lower top plate(11) is mounted to an inner surface magnet(10). An upper top plate(11') is mounted to an outer surface magnet(10'). A yoke(20) is inserted between the inner surface magnet(10) and the outer surface magnet(10'). A speaker portion(S1) is installed at a magnetic space portion(30). A voice coil(50) is connected to a vibration plate(40). The voice coil(50) is inserted into the speaker portion(S1). A voice coil(50') is connected to a vibration plate(40'). A receiver portion(R1) is installed at a magnetic space portion(30'). A coil unit(100) is formed between a lower end periphery of the yoke(20) of the receiver portion(R1) and an upper end periphery of a vibration plate(40').

Description

Two-way micro speaker for mobile communication terminal increased electromagnetic wave}

The present invention relates to a bidirectional micro speaker for a mobile communication terminal having an increased electromagnetic wave, and more particularly, a hearing aid (Hearing) formed of a printed circuit board (PCB) coil or a winding coil at the lower end of a yoke of a receiver unit in which vibration interference of a diaphragm does not occur. Aid) By forming a coil unit for reproducing the detection signal, the electromagnetic force of the receiver unit is increased through the coil unit, and the hearing sound is normally detected even when the hearing aid is worn by detecting the electromagnetic wave generated through the increased electromagnetic force. The present invention relates to a bidirectional micro speaker for a mobile communication terminal having an increased electromagnetic force for listening.

In general, the bidirectional speaker mounted inside the terminal combines a speaker unit for outputting a ring tone and a receiver unit for outputting a reception sound to enable independent sound reproduction.

However, the two-way speaker as described above implements the sound pressure band of the general public, and the hearing loss is weak, so that the hearing impaired people wearing hearing aids are not implemented as a normal sound pressure. That is, the output sound output from the speaker unit has no problem for hearing impaired people wearing hearing aids, but the reception sound output from the receiver unit is not only through a mechanical device but also the output sound pressure can be received from the hearing aid. It is different from the sound pressure zones that exist, so normal listening is impossible.

To describe the hearing aid in more detail,

Hearing aids are electronic medical machines that amplify inaudible sounds for people with hearing impairments and supplement them so that they can be heard loudly as needed. A general hearing aid is mainly composed of a microphone, an amplifier, and a receiver (speaker), and receives a sound through the microphone and converts it into an electrical signal. The converted electrical signal is amplified by an amplifier and then converted back into a sound signal by a hearing aid receiver.

If the user hears the reception sound output from the receiver unit of the bidirectional speaker on-axis while wearing the hearing aid formed as described above, the sound generated from the diaphragm of the receiver unit reaches the listening position in phase and is relatively vibrated. A sound pressure waveform proportional to is obtained. As a result, the sound output from the receiver can be perceived to some extent.

However, when listening to the incoming sound output from the receiver of the two-way speaker in the off-axis position, the sound pressure waveform is reinforced or canceled according to the position away from the axis. The difference will be.

That is, the person listening on the axis can hear the reception sound output from the receiver more clearly than the person listening from the position off the axis. However, listening on the axis does not mean that you can hear the sound clearly, it is more clearly heard than when you are listening off-axis.

Therefore, there is a need for an apparatus capable of clearly listening to a reception sound output from a receiver even when listening on an axis or at an off-axis position.

Recently, by strengthening the function of the Hearing Aid (Hearing Aid) by installing a telephone coil (Telecoil) inside the hearing aid, if you do not hear the telephone tone well when receiving a call to adjust the hearing aid to hear a clear sound, but this is a cost Not only is this expensive, there are problems such as troublesome operation and frequent failures.

There is also a portable telephone (Utility Model Registration No. 199525) that has a projection-type unit formed outside the receiver of the mobile communication terminal. However, this is not only cumbersome because the hearing aid must be removed after the hearing aid is used. Due to the protruding part, it is inconvenient to store and impedes the aesthetics of the phone.

Therefore, in recent years, there has been a desire to increase the electromagnetic force by increasing the number of windings of the voice coil mounted on the receiver, but in order to generate an electromagnetic force recognizable in the hearing aid, the size of the receiver increases, which is a terminal structure showing a trend toward smaller size. There is a problem such as that is not suitable.

An object of the present invention is to solve such a problem in the prior art, the PCB coil wound in a predetermined shape or the winding coil wound to a predetermined thickness between the yoke and the vibration plate of the receiver portion with the lowest vibration interference of the vibration plate. By mounting the coil unit, the electromagnetic force generated in the receiver unit is increased. The electromagnetic wave is transmitted to the hearing aid due to the increased electromagnetic force, and the hearing aid that recognizes the electromagnetic wave transmits the normal reception sound to the ear through the receiver. The purpose of the present invention is to provide a bidirectional micro speaker for a mobile communication terminal.

Figure 1a is a cross-sectional view showing a coil unit formed of a winding coil in the present invention

Figure 1b is a cross-sectional view showing a coil unit formed of a PCB coil in the present invention

Figure 2a or 2b is a state diagram showing a coil unit formed of a PCB coil in the present invention

Figure 3 is a state diagram showing the flow of electromagnetic force in the present invention

Figure 4 is a connection diagram showing a conventional PCB connection

5 is a connection diagram showing the PCB connection of the present invention

6a or 6b is an embodiment applying the present invention to the speaker unit

Figure 7 is a graph showing the magnetic field strength standard of the hearing aid in the present invention

8a or 8b is a graph showing the magnetic field strength calculated through the present invention

<Description of Symbols for Major Parts of Drawings>

1: PCB coil 2: I / O line 3: I / O line

4: Winding coil 10: Inner ring magnet 10 ': Outer ring magnet

11,11 ': Top plate 20: York 30,30': Magnetic space part

40,40 ': Diaphragm 50,50': Voice coil 60: PCB coil winding part

61: insertion hole 62: connector 70: PCB connection

71: first receiver I / O unit 72: second receiver I / O unit 73: common ground unit

100: coil unit R1: receiver portion S1: speaker portion

A: two way micro speaker

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

Between the inner ring magnet 10 on which the lower top plate 11 is mounted and the outer ring magnet 10 'on which the upper top plate 11' is mounted. The voice coil 50 connected to the diaphragm 40 is inserted into the magnetic space portion 30 formed between the inner and outer ring magnets 10, 10 ′ and the yoke 20. A speaker part S1 into which it is inserted; The receiver part R1 into which the voice coil 50 'connected to the diaphragm 40' is inserted into the magnetic space part 30 'formed between the inner and outer ring magnets 10, 10' and the yoke 20. In the conventional micro speaker composed of a combination of the present invention, the present invention is a coil between the lower outer periphery of the yoke 20 of the receiver portion R1 and the upper outer periphery of the diaphragm 40 'as shown in Fig. 1a or 1b. It is characterized in that the unit 100 is formed.

In the above, the coil unit 100 is formed by mounting the winding coil 4 wound around a predetermined number of times and a predetermined width as shown in FIG.

In the above, the coil unit 100 includes a PCB coil winding unit 60 in which the PCB coil 1 is wound a plurality of times in a spiral shape on the upper and lower surfaces as shown in FIGS. 1B to 2B; It is formed by a combination of the first connector input and output unit 71, the second receiver input and output unit 72 and the common connection portion (73) consisting of a common ground (73).

In the above, the coil units 100 may be stacked in a multiple of two.

In the above, the coil unit 100 may be mounted to the speaker unit S1 as shown in FIG. 6A or 6B.

In the above, an insertion hole 61 into which the voice coil 50 'of the receiver portion R1 is inserted is formed at the center of the PCB coil winding portion 60, as shown in FIG. 2A or 2B. The connection hole 62 for connecting the upper and lower PCB coil 1 is formed.

In the above, the direction of the PCB coil 1 wound on the upper surface of the PCB coil winding part 60 and the direction of the PCB coil 1 wound on the lower surface are formed in the same direction.

In the above, the first receiver input and output unit 71 of the PCB connection unit 70 is connected to the winding start front end portion of the input and output line 2 and the PCB coil 1, the second receiver input and output unit 72, the diaphragm ( The end of the voice coil 50 'connected to the 40') is connected to the input / output line 3, and the winding end of the PCB coil 1 and the front end of the voice coil 50 'are connected to the common ground 73. It is done.

As described above, the present invention inserts and mounts an outer ring magnet 10 'equipped with an upper top plate 11' to one side above the support frame 80, as shown in FIG. 1A or 1B, and the outer ring magnet 10 '. At the bottom, the inner ring magnet 10 having the lower top plate 11 is inserted into the recess 21 After mounting the yoke 20 having a shape, the lower end of the yoke 20 is formed of a predetermined shape of the PCB coil 1 or the winding coil 4 wound in the same direction as the voice coil 50 '. The coil unit 100 is formed. After the coil unit 100 is formed, the voice coil 50 having the diaphragm 40, 40 ′ mounted on the upper and lower spaces between the inner and outer ring magnets 10, 10 ′ and the yoke 20. ) 50 'is inserted, and the electromagnetic wave waves implemented by the present invention are equipped with protectors 90 and 90' formed with sound emitting holes 91 and 91 'on top of the diaphragm 40 and 40'. Is completed with augmented bidirectional micro speaker.

Referring to the coil unit 100 of the bidirectional micro speaker (A) formed as described above in more detail as follows.

First, referring to the coil unit 100 formed of the winding coil 4 as shown in FIG. 1A,

The winding coil 4 wound around the predetermined width and the predetermined number of times between the lower outer periphery of the yoke 20 and the outer periphery of the diaphragm 40 'of the receiver portion R1 having the weakest vibration interference of the diaphragm 40'. It is installed.

When the power is applied to the micro-speaker (a) formed with the winding coil 4 as described above, current flows through the PCB connection part 70 mounted on the terminal board 5 to the voice coil 50 '. When an induced voltage is excited to the voice coil 50 ', Lorentz force is generated. The Lorentz force is formed in a direction perpendicular to the plane of magnetic flux density and current, that is, a vertical coil. 50 'moves upward and downward, and the diaphragm 40' coupled to the voice coil 50 'vibrates. In addition, when a current flows in the winding coil 4 mounted between the yoke 20 and the diaphragm 40 ', the electromagnetic force is increased, and the microphone of the hearing aid receives the electromagnetic wave and converts it into an electrical signal. The converted electrical signal is amplified by an amplifier, and then converted into a sound signal through the receiver of the hearing aid so that a clear reception sound can be heard.

And with reference to the coil unit 100 formed of a PCB coil 1 as shown in Figure 2a or 2b,

The coil unit 100 is formed of a PCB coil winding unit 60 and a PCB connection unit 70 formed of a PCB coil 1, wherein the PCB coil winding unit 60 is formed of copper foil patterns on the upper and lower surfaces of the PCB substrate. PCB coil (1) It is formed by winding in a unidirectional vortex shape such as That is, the PCB coil 1 is wound from the outer circumferential edge of the upper surface of the PCB coil winding part 60 to the inner circumference, and the PCB coil 1 wound into the upper inner circumferential edge is formed on one side of the PCB coil winding part 60. It is wound from the inner circumference to the outer circumference by being connected to the lower surface through the connecting hole 62.

The PCB connection unit 70 is formed of the first receiver input / output unit 71, the second receiver input / output unit 72, and the common ground unit 73. First, the PCB connection unit 70 is mounted on the terminal board 5 to apply a driving signal of the terminal. Looking at the conventional PCB connection 70 is

As shown in FIG. 4, the input / output lines 2 and 3 and the voice coil 50 ′ are connected. When power is applied through the input / output line 2, current flows through the voice coil 50 ′ to the surrounding electromagnetic field. This occurs, and the vibration plate 40, 40 'is vibrated by the electromagnetic force generated in the electromagnetic field. However, the sound pressure output by the vibration of the diaphragm 40, 40 'does not satisfy the appropriate decibel (dB) that can be heard by people wearing hearing aids.

Therefore, in the present invention, the PCB coil winding unit 60 and the PCB coil unit 100 formed of the PCB coil winding unit 60 and the PCB connection unit 70 are inserted and connected between the input / output line 2 and the voice coil 50 'as shown in FIG. 5. .

Looking at the connection state of the receiver unit R1 side of the PCB connection unit 70, the first receiver input and output unit 71, the winding of the input / output line 2 and the PCB coil 1 to which the drive signal of the terminal is applied starts. The end portion of the voice coil 50 'connected to the diaphragm 40' and the input / output line 3 are connected to the second receiver input / output unit 72 and soldered. The ground portion 73 is connected to and soldered to the front end portion of the PCB coil 1 and the voice coil 50 'which have been wound.

Therefore, when power is applied to the coil unit 100 formed as described above, after passing through the PCB coil winding unit 60 in which the PCB coil 1 is wound through the input / output line 2, the common grounding unit 73. Through the current flows to the voice coil 50 'is connected to the PCB coil (1). When an induced voltage is excited to the voice coil 50 ', a Lorentz force is generated, and a vertical displacement occurs in the voice coil 50' due to the Lorentz force, and the voice coil 50 ' The coupled diaphragm 40 'is to vibrate.

In the coil unit 100, as shown in FIG. 3, the electromagnetic force is increased, and the electromagnetic wave of the electromagnetic force is received by the microphone of the hearing aid and converted into an electrical signal. The converted electrical signal is amplified by an amplifier, and then converted into a sound signal through a receiver of the hearing aid so that a clear reception sound can be heard.

As such, when the coil unit 100 is mounted between the lower outer periphery of the yoke 20 and the upper outer periphery of the diaphragm 40 'of the receiver R1 having the least interference with the diaphragm 40', the electromagnetic force increases. By recognizing the increased electromagnetic force in the microphone of the hearing aid and transmitting the normal sound wave, people equipped with the hearing aid can listen to the received sound. In addition, since the PCB coil 1 is free from interference and is easy to work, it uses a very thin PCB substrate, so that the number of turns of the PCB coil 1 can be increased as many times as desired or the PCB substrate can be laminated. It is possible to secure enough electromagnetic force as desired.

In the present invention, as a result of measuring the magnetic field strength generated in the axial direction (radial) off the axis (radial), as shown in Figure 8a to 8b. Through the calculation result, it can be seen that a measurement value suitable for the hearing aid standard standard as shown in FIG. 7 can be obtained.

In another embodiment of the present invention, as shown in FIG. 6A or 6B, the coil unit 100 may be mounted to the speaker unit S1, and the diaphragm may be mounted to the speaker unit S1 as illustrated in the receiver unit R1. It is mounted between the yoke 20 and the diaphragm 40 having the least interference on the 40, and the area of the speaker unit S1 is wider than that of the receiver unit R1, so that the winding coil 4 or the PCB coil can be mounted. The number of turns of (1) is also increased, so that the electromagnetic force generated is also larger than that of the receiver portion R1.

As described above, the present invention provides the coil unit 100 or the winding coil in which the PCB coil 1 is wound between the yoke 20 of the receiver portion R1 and the vibration plate 40 'having the weakest vibration interference of the diaphragm 40'. By forming the coil unit 100 equipped with (4), the electromagnetic force generated in the receiver portion (R1) is increased, the electromagnetic wave is transmitted to the microphone of the hearing aid due to the electromagnetic force, even in the state wearing the hearing aid without a separate device It allows you to listen to clear phone sounds.

Claims (8)

Between the inner ring magnet 10 on which the lower top plate 11 is mounted and the outer ring magnet 10 'on which the upper top plate 11' is mounted. The voice coil 50 connected to the diaphragm 40 is inserted into the magnetic space portion 30 formed between the inner and outer ring magnets 10, 10 ′ and the yoke 20. A speaker part S1 into which it is inserted; The receiver part R1 into which the voice coil 50 'connected to the diaphragm 40' is inserted into the magnetic space part 30 'formed between the inner and outer ring magnets 10, 10' and the yoke 20. In the conventional micro-speaker composed of a combination of the above, the coil unit 100 is formed between the outer periphery of the lower end of the yoke 20 and the outer periphery of the diaphragm 40 'of the receiver portion (R1). Two-way micro speaker for mobile communication terminal with increased electromagnetic wave. The method of claim 1, wherein the coil unit (100) is a two-way micro speaker for a mobile communication terminal with an increased electromagnetic wave, characterized in that formed by mounting a winding coil (4) wound a predetermined number of times and a predetermined width. 2. The coil unit (100) according to claim 1, further comprising: a PCB coil winding portion (60) in which the PCB coil (1) is wound a plurality of times in a spiral shape on an upper surface and a lower surface; Bidirectional for a mobile communication terminal with an increased electromagnetic wave, characterized in that formed by a combination of; the first connector input and output unit 71, the second receiver input and output unit 72, and the PCB connection unit 70 composed of a common ground (73) Micro speaker. The method of claim 1, wherein the coil unit 100 is a two-way micro-speaker for a mobile communication terminal with an increased electromagnetic wave, characterized in that stacked in the form of multiples of 2. The method of claim 1, wherein the coil unit (100) is a two-way micro speaker for a mobile communication terminal with increased electromagnetic waves, characterized in that mounted to the speaker unit (S1). The insertion hole 61 into which the voice coil 50 'of the receiver portion R1 is inserted is formed in the center of the PCB coil winding portion 60, and the upper and lower surfaces of one side of the PCB substrate are formed. The connecting hole 62 for connecting the PCB coil 1 of the bidirectional micro speaker for mobile communication terminal with increased electromagnetic waves, characterized in that formed. 4. A direction according to claim 3, wherein the direction of the PCB coil 1 wound on the upper surface of the PCB coil winding part 60 and the direction of the PCB coil 1 wound on the lower surface are formed in the same direction. Two-way micro speaker for mobile communication terminals with increased electromagnetic waves. 4. The winding start end of the input / output line 2 and the PCB coil 1 is connected to the first receiver input / output unit 71 of the PCB connection unit 70, and the second receiver input / output unit 72 is connected. The end of the voice coil 50 'connected to the diaphragm 40' is connected to the input / output line 3, and the wound terminal of the PCB coil 1 and the voice coil 50 'are connected to the common ground 73. Two-way micro speaker for mobile communication terminal with increased electromagnetic waves, characterized in that the front end is connected.