KR100401000B1 - Speaker United in Receiver - Google Patents

Abstract

The present invention relates to a speaker to which a receiver is coupled. The speaker unit 110 outputs a ringing tone of a predetermined size from one side, the receiver unit 120 outputs a predetermined size of sound from the other side, and the speaker unit 110. And a frame 26 that symmetrically receives the receiver 120 and a terminal 28 connected to the frame 26 to which an electric signal is applied, the speaker unit 110 and the receiver. The unit 120 includes protectors 10 and 40 having a plurality of sound outlets 11 and 41, diaphragms 12 and 38 generating sound by vibration at a sound pressure, and a voice vibrating by an applied voice current. The coils 14 and 36, the top plates 16 and 34 mounted in the voice coils 14 and 36, and the magnet 18 generating the magnetic field by the voice current flowing through the voice coils 14 and 36, 32) and the upper portion of the core (18, 32) is a core without a fixed winding A double yoke 20 having a yoke 22 and a lower yoke 24 integrated therein is incorporated in various mobile communication terminals such as a cellular phone or a PCS phone to integrate a speaker for generating a ringing tone and a receiver for reproducing a voice signal. A receiver is a combined speaker.

Description

Speaker with receiver {Speaker United in Receiver}

The present invention relates to a speaker in which a receiver and a speaker are integrally coupled, and more particularly, to a speaker and a voice which are mounted in various mobile communication terminals such as a mobile phone (eg, a cellular phone or a PCS phone) to generate a ringing tone. The present invention relates to a speaker having a receiver integrated with a receiver for reproducing a signal.

In general, speakers and receivers have no difference in mechanical and electromagnetic structure, and they are powered by voice coils existing between the air gaps by Fleming's left-hand law that a current-carrying conductor is subjected to a force in a magnetic field. To convert it into mechanical energy.

That is, when a current signal containing several frequencies is applied to the voice coil, the voice coil generates mechanical energy according to the strength of the current and the magnitude of the frequency, and generates vibrations in the diaphragm attached to the voice coil. The ear produces a sound pressure of a predetermined magnitude.

Among these sound pressures, relatively low sound pressures are used to closely adhere to the human ear and are commonly referred to as receivers. In contrast, those with relatively high sound pressure and a certain distance from the human ear are used as speakers. It is called.

The magnetic circuits of the speaker and the receiver are magnetic fluxes perpendicular to the voice coils present in the air gap by using magnets and permanent plates in the yoke made of ferrous metal, respectively. It is designed to be bridged, and the voice coil is bonded to the diaphragm to generate the up and down excitation force by the input signal to vibrate the diaphragm adhered to the frame to generate sound pressure. The diaphragm has various wave shapes in order to remove the buckling phenomenon and excellent response during vertical vibration. The shape of the diaphragm acts as a design variable that has the greatest influence on the frequency characteristics.

Speakers and receivers have not changed much in structure for a long time, but in recent years, small size and light weight have been continuously made in response to the trend of commercialization of high-energy permanent magnets, development of molding technology for micro structures, and small size and light weight in the information and communication field. And high performance is being realized.

In particular, the miniaturization of mobile communication terminals depends on whether the components such as receivers, speaker buzzers, and vibrators that have mechanical dynamic characteristics can be miniaturized. It is done.

Until now, mobile communication terminals have mostly used buzzers to generate ringing sounds, but they are being replaced by speakers having excellent frequency characteristics because they require the generation of various ringing sounds according to user's convenience, taste, and preference changes. In addition, in the case of the receiver, improving the frequency characteristics due to the small size and light weight has emerged as a major problem.

Conventional speakers and receivers are mounted in separate locations as separate components when mounted in a mobile communication terminal. That is, in the perspective view of Fig. 1, the receiver 2 for outputting an audio signal of the mobile communication terminal 1, the speaker 4 for outputting a ringing sound, etc., the microphone 3 for inputting a voice signal, and the like, respectively function. It was mounted in the appropriate position to fit.

Therefore, there has been a difficulty in securing space in the mounting of such components in the past, and it is more difficult to separately mount two components, such as a speaker and a receiver, due to the densification of the internal structure of the mobile communication terminal. In particular, a speaker that needs to generate a ringing sound has a large problem in miniaturization because a diaphragm having a relatively large diameter is required in order to output an appropriate sound pressure.

Moreover, in the case of the folding mobile communication terminal, which is widely used and used in recent years, it is difficult to attach a relatively bulky speaker, and there are no products using the speaker for calling until now.

In addition, when using the conventional speaker and the receiver at the same time by using a separate magnetic circuit and a frame, there is a disadvantage that the volume and weight of the mobile communication terminal is increased.

In addition, since the speaker and receiver are molded by plastic processing, the yoke permeability decreases due to plastic deformation and high energy permanent magnets are used. Low, especially in the case of the speaker had a problem that has an inappropriate magnetic circuit structure to give enough sound pressure.

In order to solve the above problems, the present invention is to form a yoke or pole piece that can accommodate the receiver and the speaker at the same time by plastic working, and the receiver is coupled to the yoke or pole piece by mounting the components of the receiver and the speaker It is an object to configure the integrated speaker in the frame.

In addition, another object of the present invention is to provide a speaker coupled to one side of the flip portion of the foldable mobile communication terminal to secure space, reduce manufacturing costs and simplify the manufacturing process of the mobile communication terminal.

In addition, another object of the present invention is to increase the shape of the speaker components differently from the receiver in order to maximize the sound pressure of the speaker compared to the receiver, or to improve the efficiency of the appropriate magnetic circuit in the same shape.

1 is a perspective view showing a portable mobile communication terminal showing a state where a receiver and a speaker are separately mounted in the related art;

2 is a perspective view of a speaker coupled to the receiver shown in the first embodiment according to the present invention;

3 is a cross-sectional view of FIG.

4 and 5 are cross-sectional views of a speaker coupled to the receiver shown in the second and third embodiments according to the present invention,

6 is a mounting state of the speaker coupled to the present invention.

♣ Explanation of symbols for main part of drawing ♣

10, 40: protectors 11, 41: sound outlet

12, 38: diaphragm 14, 36: voice coil

16, 17, 34, 35: top plate 18, 19, 32, 33: magnet

20: double yoke 21: double pole peace

22: upper yoke 24: lower yoke

25, 27: through 26: frame

28: terminal 29: terminal block

30: connector 110: speaker unit

120: receiver 200: portable mobile communication terminal

210: flip part 211, 212: through hole

220: main body

The present invention to achieve the above object, a) a speaker unit for outputting a ring tone of a predetermined size from one side; b) a receiver unit which is integrally coupled to the speaker unit and outputs sound of a predetermined size from the other side; c) a frame symmetrically accommodating the speaker portion and the receiver portion; And d) a terminal connected to the frame and to which an electrical signal is applied, wherein the speaker unit and the receiver unit which are integrally coupled include: a protector having a plurality of sound emission outlets; Diaphragm for generating sound by vibration at a sound pressure; A voice coil vibrating by an applied voice current; A top plate mounted in the voice coil; A magnet generating a magnetic field by voice current flowing through the voice coil; And a receiver including a double yoke in which an upper yoke and a lower yoke, which are iron cores without a fixed winding of the magnet, are integrated.

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

2 is a perspective view of a speaker coupled to the receiver shown in the first embodiment according to the present invention, Figure 3 is a cross-sectional view of FIG.

According to the present invention, the portable mobile communication terminal 200 processes and inputs and receives voice and data signals transmitted and received, and the processed sound signals are divided into the speaker unit 110 and the receiver unit 120, respectively, and the speaker unit 110. ) And receiver portion 120 are symmetrically received in frame 26.

The speaker unit 110 outputs a call sound of a predetermined size from one side, and the speaker unit 110 outputs a sound of a predetermined size from the other side. In addition, the terminal 28 is connected to one side of the frame 26 to input an electrical signal. That is, the connector 30 for inputting and outputting signals to the terminal block 29 of the terminal 28 is connected.

The speaker unit 110 includes a first protector 10 having a plurality of sound outlets 11, a first diaphragm 12 that generates sound by vibration at a sound pressure, and a vibration that is generated by an applied voice current. The first voice coil 14, the first top plate 16 mounted in the first voice coil 14, and the first magnet generating a magnetic field by the voice current flowing through the first voice coil 14 ( 18) and the first magnet 18 consists of an upper yoke 22, which is an iron core without a fixed winding.

In addition, the receiver 120 may be vibrated by a second protector 40 having a plurality of sound outlets 41, a second diaphragm 38 that generates sound by vibration at a sound pressure, and a voice current applied thereto. The second voice coil 36, the second top plate 34 mounted in the second voice coil 36, and the second to generate a magnetic field by the voice current flowing through the second voice coil 36 The magnet 32 and the lower yoke 24, which is an iron core without a fixed wire, to which the second magnet 32 is fixed, are included.

Furthermore, the upper yoke 22 of the speaker unit 110 and the lower yoke 24 of the receiver unit 120 are integrated into a double yoke 20 formed asymmetrically and coupled to the inside of the frame 26. The first magnet 18, the first top plate 16, the first boy coil 14, the first diaphragm 12, and the first protector 10 may be inserted into the component 110. Each component is larger than the components inserted into the receiver 120. This is to enable the speaker unit 110 to output a sound larger than the sound output from the receiver unit 120.

In addition, a plurality of first through holes 27 are formed inside the frame 26 to adjust the mechanical rigidity of air existing between the frame 26 and the diaphragm 12 of the speaker unit 110. A plurality of second through holes 25 are formed at one end of the double yoke 20 so as to adjust the mechanical stiffness of the air existing between the frame 26 and the diaphragm 38 of the receiver 120.

On the other hand, Figure 4 is a second embodiment of the present invention, the upper yoke 22 and the lower yoke 24 is integrated into a double yoke 20 formed symmetrically coupled to the inside of the frame 26, the speaker Sizes of the first magnet 18, the first top plate 16, the first boy coil 14, the first diaphragm 12, and the first protector 10 as components that are inserted into and mounted in the unit 110. Is the same size as the component inserted into the receiver 120.

The components of the speaker unit 110 and the receiver unit 120 have the same size, but the magnetic flux of the first magnet 18 of the speaker unit 110 is greater than the magnetic flux of the second magnet 32 of the receiver unit 120. Big ones apply.

In addition, the number of turns of the first voice coil 14 of the speaker unit 110 is larger than the number of turns of the second voice coil 36 of the receiver unit 120 is applied, the first of the speaker unit 110 The number of turns of the voice coil 14 and the number of turns of the second voice coil 36 of the receiver unit 120 are the same, but the thickness of the first voice coil 14 of the speaker unit 110 is greater than that of the receiver unit 120. Larger than the thickness of the second voice coil 36 is applied.

A plurality of through holes 27 are formed to adjust the mechanical stiffness of air existing between the speaker unit 110 and the diaphragms 12 and 38 of the receiver unit 120 from the side of the frame 26. . In addition, a nonwoven screen (not shown) is attached to the back surface of the through hole 27 to control the flow of air.

Although the double yoke 20 that can accommodate the receiver 120 and the speaker unit 110 is molded by plastic working, the permeability of the double yoke 20 due to plastic deformation is reduced and the high energy magnet is used. Due to the relatively thin thickness of the yoke, the saturation of the magnetic circuit is extremely low and the efficiency is low. In particular, in the case of the speaker unit 110, the magnetic circuit structure has an inappropriate magnetic circuit structure.

In particular, in the case of the speaker unit 110 to generate a ringing sound, there is a method of increasing the diameter of the diaphragm and a method of improving the efficiency of the magnetic circuit in order to obtain an appropriate sound pressure.

In terms of the method of improving the efficiency of the magnetic circuit, the integrated speaker and receiver proposed by the present invention can greatly increase the efficiency of the magnetic circuit, so that a high sound pressure can be obtained even when a diaphragm having a small diameter is employed. Along with the integration of the two parts, it can greatly contribute to miniaturization.

In particular, the shape shown in Figure 4 has an asymmetric shape of the speaker and the receiver portion, and takes the form of using the speaker portion and the receiver portion at the same time through the air for the air flow, unlike the previous commercial products double yoke (20 ), Which is not manufactured by wrought iron processing, is manufactured by molding ferrite powder and polyamide resin with a weight ratio of 90% to 10%, thereby reducing the overall weight and simplifying the manufacturing process. It is possible to improve productivity and provide the advantage.

FIG. 5 is a third embodiment of a speaker to which the receiver of the present invention is coupled. In contrast to the cylindrical magnets 18 and 32 in the center, the ring magnets 19 and 33 are used. A double pole piece 21 is positioned at the center, and magnets 19 and 33 having top plates 17 and 35 are attached to upper and lower portions of the double pole piece 21, respectively. .

At this time, there is a difference from the first and second embodiments in that a magnetic circuit structure is formed so that the magnetic flux from the magnets 19 and 33 located outside the double pole piece 21 flows toward the pole piece.

Double pole piece 21 is made of a material having a high permeability, such as pure iron, characterized in that the size of the pole piece of the speaker unit 110 and the receiver unit 120 asymmetric.

In addition, the voice coils 14 and 36 are attached to a position closer to the center of the diaphragms 12 and 38 than in a general receiver or speaker. Therefore, in terms of mechanical vibration, the effect of concentrating the diaphragms 12 and 38 is increased, thereby having a structure capable of generating higher sound pressure.

In the position of the through hole for adjusting the mechanical rigidity of the internal air of the speaker unit 110 and the receiver unit 120, the through hole is formed on the side as in the second embodiment, and the speaker unit 110 and the receiver unit It is possible to selectively employ one of two forms of forming a common through hole at 120 and forming a through hole at one side of the receiver unit 120 as in the first embodiment.

FIG. 6 shows that the speaker unit 110 to which the receiver unit 120 is coupled is mounted on one side of the flip unit 210 of the foldable mobile communication terminal 200, and the speaker unit 110 is the outside of the flip unit 210. As such, the receiver 120 is mounted inward so that the flip portion 210 is closed, that is, in a state in which the mobile communication terminal 200 is not used, a ringing sound is generated through the outer speaker unit 110. In the state in which the mobile communication terminal 200 is in use, by outputting the sound signal through the receiver unit 120 inside, while using the function of the speaker and the function of the receiver at the same time, each use is made to be different. A plurality of through holes 211 and 212 for outputting sound are formed in the inner and outer sides of the flip unit 210 in a state where the speaker coupled to the flip unit 210 is mounted.

The speaker coupled to the present invention is preferably made of a thin film, for example, 3.6mm or less, the speaker unit 110 is 70 ~ 80dB within 1m, the receiver 120 outputs a sound of 100dB within 10cm It is desirable to.

As described above, in the present invention, most of the mobile communication terminals are symmetrically positioned in the opposite direction in order to prevent the user's hearing damage due to the ringing tone caused by the abnormal signal. The proposed product can prevent hearing damage.

Considering the trend of mounting a large liquid crystal display (LCD) for wireless video communication and data communication in the future, it is expected that the demand for a folding type mobile communication terminal for small size and light weight will be maintained continuously. The present invention provides an advantage that the present invention can be easily applied to a relatively difficult space product such as a mobile communication terminal, and may be sufficiently changed, converted, replaced, and replaced in consideration of the present invention, and is not limited to the above. .

As described above, the speaker combined with the receiver of the present invention combines a magnet, a top plate, a voice coil, a diaphragm and a protector up and down symmetrically or asymmetrically to one frame and a yoke or a pole piece to receive a ring tone and a voice signal. The speaker and the receiver to be reproduced are integrated, and small size and light weight can be reduced due to the increase in the efficiency of the magnetic circuit. Therefore, the speaker and the receiver can be easily attached to the flip portion of the narrow mobile communication terminal. In addition, by integrating two magnetic circuits into one, the structure is simple and the manufacturing cost is reduced.

Claims (16)

a) a speaker unit for outputting a ringing tone of a predetermined size from one side; b) a receiver unit which is integrally coupled to the speaker unit and outputs sound of a predetermined size from the other side; c) a frame symmetrically accommodating the speaker portion and the receiver portion; And d) a terminal connected to the frame to which an electrical signal is applied; Including; The speaker unit and the receiver unit are integrally coupled, A protector in which a plurality of sound discharge outlets are formed; Diaphragm for generating sound by vibration at a sound pressure; A voice coil vibrating by an applied voice current; A top plate mounted in the voice coil; A magnet generating a magnetic field by voice current flowing through the voice coil; And Double yoke of which upper yoke and lower yoke are iron cores The receiver is coupled to the speaker comprising a. The method of claim 1, wherein the speaker unit A first protector having a plurality of sound emission outlets, A first diaphragm which generates sound by vibration at sound pressure, A first voice coil vibrating by an applied voice current, A first top plate mounted in the first voice coil, A first magnet generating a magnetic field by a voice current flowing through the first voice coil, The speaker coupled to the receiver, characterized in that the first magnet comprises an upper yoke which is a core without a fixed winding. The method of claim 1, wherein the receiver unit A second protector having a plurality of sound emission outlets, A second diaphragm which generates sound by vibration at sound pressure, A second voice coil vibrating by an applied voice current, A second top plate mounted in the second boy coil, A second magnet generating a magnetic field by a voice current flowing through the second voice coil, The speaker coupled to the receiver, characterized in that the second magnet includes a lower yoke which is an iron core without a fixed winding. [4] The magnet according to claim 2 or 3, wherein the upper yoke and the lower yoke are integrated into an asymmetrically formed double yoke, coupled to an inner side of the frame, and inserted into and mounted on a speaker unit. And a size of the diaphragm and the protector, respectively, larger than the component inserted into the receiver. The machine of claim 4, wherein a plurality of first holes are formed inside the frame to adjust mechanical stiffness of air existing between the frame and the diaphragm of the speaker, and between the frame and the diaphragm of the receiver. Speakers coupled to the receiver, characterized in that a plurality of second through-holes are formed at one end of the double yoke to adjust the rigidity. [4] The magnet according to claim 2 or 3, wherein the upper yoke and the lower yoke are integrated into a symmetrically formed double yoke, coupled to the inside of the frame, and inserted into and mounted on the speaker unit. And a receiver coupled to the diaphragm and protector, wherein the size of the diaphragm and the protector is the same size as that of the component to be inserted into the receiver. The speaker as claimed in claim 6, wherein the components of the speaker unit and the receiver unit have the same size, and the magnetic flux of the speaker unit is larger than the magnetic flux of the receiver unit. The speaker coupled receiver of claim 6, wherein the number of turns of the voice coil of the speaker unit is larger than the number of turns of the voice coil of the receiver unit. 7. The receiver of claim 6, wherein the number of turns of the voice coil of the speaker unit and the number of turns of the voice coil of the receiver unit are the same, but the thickness of the voice coil of the speaker unit is larger than the thickness of the voice coil of the receiver unit. speaker. The speaker as claimed in claim 6, wherein a plurality of through holes are formed to adjust mechanical stiffness of air existing between the speaker portion and the diaphragm of the receiver portion from the side of the frame. 6. The speaker of claim 5, wherein a nonwoven screen is attached to the rear surface of the through hole so as to control the flow of air. According to claim 1, wherein the receiver is coupled to the speaker mounted on one side of the flip portion of the clamshell mobile communication terminal, the speaker portion facing the outside of the flip portion, the receiver portion is mounted so as to face the inside of the flip portion Speaker with combined receiver. The speaker as claimed in claim 1, wherein the double yoke is injection molded by mixing ferrite powder and polyamide resin in a weight ratio of 90% to 10%. 11. The speaker of claim 10, wherein a nonwoven screen is attached to the rear surface of the through hole so as to control the flow of air. a) high permeability double pole piece formed asymmetrically in the upper and lower parts; b) a first protector having a plurality of sound emitting outlets; c) a first diaphragm for generating sound by vibration at sound pressure; d) a first voice coil vibrating by an applied voice current; e) a first magnet configured to have a magnetic field by a voice current flowing in a ring shape on the outer side of the first voice coil and the double pole piece; f) a speaker unit including a first top plate mounted in the same shape on an upper end of the first magnet and outputting a ringing tone of a predetermined size from one side; g) a second protector having a plurality of sound emitting outlets; h) a second diaphragm which generates sound by vibration at sound pressure; i) a second voice coil vibrating by an applied voice current; j) a second magnet configured to generate a magnetic field by a voice current flowing in the ring shape on the outer side of the second voice coil and the lower pole piece; k) a receiver unit including a second top plate mounted in the same shape on the lower end of the second magnet, and outputting sound of a predetermined size from the other side; l) a frame accommodating the speaker unit and the receiver unit asymmetrically; And m) a terminal connected to the frame to which an electrical signal is applied; Speakers coupled to the receiver, characterized in that integrally coupled. 16. The method of claim 15, wherein a common hole is formed in the speaker unit and the receiver unit in order to control the mechanical stiffness of the air inside the speaker unit and the receiver unit, or a plurality of through holes are selectively formed in one end of the double pole piece. A speaker with a receiver.