KR20030032446A - A Multi-functional Speaker - Google Patents

Abstract

PURPOSE: A multi function speaker is provided, to perform not only a speaker function but also a buzzer and a receiver function through one component according to an external driving signal. CONSTITUTION: A cap(110) has at least one sound output hole. A housing(150) forms a space with the cap by being fixed to a bottom of the cap, and has a projected core(152) on its center, and comprises fixing ports to be connected to a substrate, and also comprises at least one through-hole for amplitude adjustment. A coil(140) is connected to connection ports electrically prolonged from the fixing ports of the housing. A magnet(130) is located on the housing with a constant gap along a circumference of the coil. A supporting ring(124) is located on the housing with a constant gap with a circumference of the magnet. A diaphragm(120) has a vibrating board(122) on its top center fixed to a chin of the diaphragm. And a fixing ring(126) fixes the diaphragm completely.

Description

Multifunctional speaker {A Multi-functional Speaker}

The present invention relates to a multifunctional speaker embedded in an electronic device requiring a mobile device such as a mobile phone or a PCS or a sound device such as a PDA (personal digital assistant), communication equipment, etc. More specifically, one component according to the external drive signal The present invention relates to a multifunctional speaker having a new structure capable of selectively performing a buzzer and a receiver function as well as a speaker function.

In general, a mobile terminal such as a mobile phone, a PCS, a wireless pager, or the like, has a built-in speaker or receiver for receiving a buzzer or a receiver's call sound. In addition, such a portable terminal has a tendency to be smaller in volume, and accordingly, the buzzer, speaker, and receiver parts are also gradually miniaturized.

As one example of such components, Korean Laid-Open Patent Publication No. 2000-7047 discloses a buzzer with thin thickness that minimizes the thickness of the buzzer. FIG. 1 is a representative structure of such a thin plate buzzer, and includes a connection terminal connected to an excitation coil 14 and a frame 15 formed on an upper portion of a housing 15 having fixed terminals for fixing the thin plate buzzer to another portion. 15b) is seated, an excitation coil is wound around a core or pole 15a placed in the center of the frame, and a metal ring 12a and a magnet 13 are respectively located on the outside of the housing. It is fixed. In addition, a diaphragm 12 having a magnet piece is mounted on an upper portion of the metal ring 12a, and a cap 11 is fixedly installed on an upper portion of the housing.

On the other hand, in recent years, in accordance with the trend of miniaturization of various components, multi-purpose sound equipment incorporating these components into one component has been developed. As a representative example, Korean Laid-Open Patent Publication No. 2000-58817 discloses a multi-functional buzzer capable of selectively performing speaker, vibrator and receiver functions according to a drive signal from the outside. have. As shown in FIGS. 2 and 3, the multi-purpose buzzer 10 has a plurality of through holes 21a for sound transmission through the outside and a plurality of terminals for connecting a driving power source. A cylindrical case 21 having 27 fixedly installed at one side thereof; Circular magnets 23a and 23b and plates 28a and 28b are sequentially stacked on top and bottom to induce the flow of magnetic force of the magnet and to fix the springs 26a and 26b. Yoke 25 for engaging jaw (26c) (26d) for the upper and lower outer periphery; A pair of springs (26a) (26b) to which the yoke (25) is fixed at the center and the outer part is fixed to the case (21) such that the yoke is located at the center of the case; It is attached to the inner surface of each diaphragm and installed opposite to the yoke and the magnet, and vibrates due to the change in the magnetic force between the coil and the coil (24a, 24b) and the magnet and the coil connected to the driving power through the terminal 27 The diaphragm 22a, 22b is comprised. When the multi-purpose buzzer 20 receives a frequency signal from the terminal 27, the coils 24a and 24b are excited to generate magnetic force to push and pull between the magnets 23a and 23b and the coils 24a and 24b. Force is generated. The multipurpose buzzer functions as a receiver, a speaker, or a vibrator while the diaphragms 22a and 22b are vibrated by this force. Specifically, in the case of the multi-purpose buzzer, the multi-purpose buzzer varies the number of windings of coils or magnetic forces of magnets facing each other so that the magnitude of the vibration changes according to the frequency of the input signal, and one side of the speaker area and the other side of the receiver. The area is performed and, furthermore, the vibrator function is caused by the vibration of the yoke 25. However, the multi-purpose buzzer having the above-described structure has a disadvantage in that the coil itself vibrates as the coil is excited according to an input signal, and the coil is severely generated when the coil movement is large, and the energy change is increased, thereby causing the coil to be disconnected. In addition, since the multi-purpose buzzer uses a spring 26, the vibration width is smaller than that of a conventional vibrator single component, and this vibration adversely affects the speaker or the buzzer function, making it difficult to generate accurate sound. First of all, the multi-purpose buzzer adopts a pin grid method in which the terminal 27 is drawn out to one side of the case 21, which makes it difficult to be surface-mounted on a substrate such as a mobile terminal and takes up a lot of space after mounting. There is a problem done.

SUMMARY OF THE INVENTION An object of the present invention is to provide a multifunctional speaker having a novel structure capable of selectively performing a speaker function as well as a buzzer and a receiver function according to an external driving signal.

Another object of the present invention is to provide a multifunctional speaker capable of producing accurate sound even with low current.

Furthermore, another object of the present invention is to provide a multifunctional speaker that is not only easy to mount the surface but also has a simple structure and is very easy to manufacture and assemble.

1 is a cross-sectional view of a conventional thin plate buzzer.

2 is an exploded perspective view of a conventional multi-purpose buzzer.

3 is a cross-sectional view of the multipurpose buzzer of FIG. 2.

4 is an external view of a multifunctional speaker according to the present invention.

5 is an exploded perspective view of a multifunctional speaker according to the present invention.

6 is a cross-sectional view taken along the line A-A of FIG.

Figure 7 shows another form of magnet according to the present invention.

Figure 8 shows another form of bottom plate according to the present invention.

9 shows another form of cap according to the present invention.

10 is an exploded perspective view of the housing of FIG.

11 shows another form of terminal according to the present invention.

12A-12D show various forms of separate cores in accordance with the present invention.

Figure 13 is an exploded perspective view of a multifunctional speaker of another embodiment according to the present invention.

FIG. 14 is an assembled sectional view of FIG.

Fig. 15A is a detailed view of another housing according to the present invention, and Fig. 15B is a bottom view thereof.

Figure 16 is a diagram showing the operation of the multifunctional speaker according to the present invention.

17 is a frequency characteristic diagram comparing general acoustic components with the multifunctional speaker of the present invention.

Explanation of symbols on the main parts of the drawings

100 .... Multifunctional speaker 110 .... Cap 120 .... Diaphragm

122 .... Damping plate 124 .... Support ring 126 .... Retaining ring

130 .... Magnet 140 .... Coil 150 .... Housing

151 .... Terminal 152 .... Core 154 .... Frame

Multifunctional speaker according to the present invention for achieving the above object, the cap having at least one outlet;

A fixed terminal configured to be fixed to a lower surface of the cap to form a space between the cap, a core protruding upward in the center, and to be electrically connected to the substrate so as to be surface-mounted on the substrate; A housing having at least one through hole communicating with the outside;

A coil disposed in the housing along the outer circumferential surface of the core in the space and electrically connected to the connecting terminals extending from the fixed terminals of the housing;

Magnets positioned on the housing at regular intervals along an outer circumferential surface of the coil;

A support ring positioned on the housing at a predetermined distance from an outer circumferential surface of the magnet and having a jaw formed at an inner side of the upper end to allow the diaphragm to be placed;

A diaphragm fixed to the jaw of the diaphragm, wherein a diaphragm is positioned at an upper center thereof; And

It comprises a fixing ring for completely fixing the diaphragm fixed to the jaw of the support ring.

In the multifunctional speaker according to the present invention, since a coil is formed in a sufficient space around the core of the housing, the size of the coil and the core can be variously manufactured to meet product specifications. This sufficient space allows the winding of the coil to be freely adjusted in the multifunctional speaker according to the present invention. Since the resistance deformation by the winding of the coil is free, current can be adjusted and power consumption can be reduced, so that the multifunctional speaker can operate very stably.

In addition, unlike the conventional multipurpose buzzer, since the diaphragm is moved instead of the coil itself, the multifunction speaker of the present invention may exclude heat generation or disconnection of the coil. In addition, since the core of the coil and the housing are in close contact with each other, heat generation is extremely low.

Moreover, in the multifunctional speaker of the present invention, even if heat is generated from the coil, heat generated due to the heat sink of the frame in the housing tends to be directly radiated through the frame in the housing.

Although the multifunctional speaker of the present invention appears to have a structure similar to that of a conventional thin plate buzzer (FIG. 1), in reality, a new speaker capable of expressing not only the buzzer but also the receiver and the speaker functions by completely different vibration mode of the diaphragm. It is about.

Hereinafter, the multifunctional speaker according to the present invention will be described in detail with reference to the drawings and various embodiments, but these detailed structures and descriptions are merely exemplary, and various modifications based on the embodiments illustrated in the present invention by those skilled in the art. It is obvious that the above-exemplified embodiments should not be construed as limiting the technical scope of the present invention as such modifications are possible.

Figure 4 shows the appearance of one embodiment of the multi-function speaker 100 according to the present invention, Figure 5 is an exploded perspective view of the multi-function speaker, Figure 6 is a cross-sectional view AA of Figure 4, showing the internal cross-sectional structure have.

As shown in FIG. 4, the multifunction speaker 100 according to the present invention includes a cap 110 for protecting the interior, and a housing 150 fixed to a lower portion of the cap 110. The multifunction speaker is mounted on a substrate (not shown) and electrically connected to a pad of the substrate through a plurality of fixed terminals 151b and 151b 'exposed to the outside from the bottom to the side of the housing.

5 is an exploded perspective view showing the internal structure of such a multifunctional speaker, and includes a diaphragm 120, a magnet 130, and a coil 140 in the space between the cap 110 and the housing 150.

5 and 6, in the multifunction speaker 100, the coil 140 is positioned around the core 152 on the lower surface of the cap 110 and the upper surface of the fixed housing 150. One magnet 130 is disposed at regular intervals along the outer circumferential surface of the coil 140, and a diaphragm 120 is provided on an upper portion thereof.

The coil 140 is disposed on the housing along the outer circumferential surface of the core in the space between the cap 110 and the housing 150 to fix the terminals 151a, 151a ', 151b and 151b' of the housing. Are electrically connected to the connection terminals 153a, 153a ', 153b, and 153b' respectively extending from the plurality of terminals (see FIG. 10).

The magnet 130 is attached to the upper surface of the housing 150 apart from the coil 140 by a predetermined distance. The magnet 130 may have a generally circular shape, but may have a shape that is almost circular and is not connected discontinuously as shown in FIG. 7.

The diaphragm 120 is fixed to an upper end of the support ring 124 spaced apart from the magnet 130 at a predetermined distance, and a weight balance 122 is attached to the upper center thereof. Specifically, when the diaphragm 120 is fixed on the support ring 124, the jaw 125 is formed inwardly along the outer circumferential surface thereof so that the diaphragm 120 is easily settled. In addition, the diaphragm 120 is located at the jaw 125 of the support ring, and the fixing ring 126 is again positioned on the outer circumferential surface of the diaphragm in a fixed state to securely fix the diaphragm. The multifunction speaker of the present invention can realize the vibration mode of the diaphragm completely different from the conventional thin plate buzzer (Fig. 1) by firmly fixing the diaphragm to the support ring 124 through the fixing ring 126. That is, in the conventional thin plate buzzer, the vibration of the diaphragm is greatly biased downward so that only the buzzer function can be performed. However, in the multifunctional speaker of the present invention, the vibration of the diaphragm vibrates in a balanced state up and down to various driving signals. Therefore, accurate response can be realized, so that not only the buzzer function but also the receiver and speaker functions can be expressed.

The diaphragm suitable for the multifunctional speaker of the present invention is preferably made of a magnetic metal material such as, for example, a permalloy. In addition, the support ring and / or the fixing ring is preferably made of a nonmagnetic material such as, for example, brass.

In addition, the diaphragm 122 formed in the upper center of the diaphragm assists the up and down vibration of the diaphragm by magnetic force and its own weight. The bottom plate may have various shapes. For example, the bottom plate may have a round triangular bottom plate 222 as shown in FIG. 8.

The cap 110 has at least one sound outlet 112 at the top to emit sound, the lower part is fixed to the housing 150, and can receive components in the space between the cap and the housing. The inside of the cap 110 is formed with a plurality of protrusions 116 downward at the top to prevent the vibration plate from being separated while the vibration plate 120 vibrates. In addition, a boss 114 is formed inwardly of the cap around the sound outlet 112 of the cap. The boss 114 amplifies and emits the sound emitted to the outside. Therefore, it is sufficient that the exit port of the cap can emit sound regardless of the number. 9 shows a case with only one outlet port 212 on top of the cap 220.

FIG. 10 is an exploded detailed view of the housing 150 of FIG. 5, wherein FIGS. 10A and 10B are a terminal 151 and a frame 154 which are part of the housing 150, respectively, and FIG. The frame 154 is a perspective view of an embedded material embedded in an insulating material, and FIG. 10D shows a bottom view of the housing.

The body 155 of the housing 150 is molded by molding an insulating material so that the frame 154 and the terminals 151 extending from the core 152 are embedded in the housing. The housing 150 has a guide member 157 formed radially on the upper surface of the frame at regular intervals. The guide member 157 also serves as a guide so that the magnet 130 can be accurately placed while preventing the vibration plate from being separated during the vibration.

The frame 154 has at least one hole 156 in the circumferential direction between the magnet 130 and the support ring 124, and after the housing is molded, the guide member 157 passes through the holes. The body 155 may be integrally connected with. In addition, as shown in FIG. 10D showing a bottom view of the housing, the housing 150 has at least one of the holes 156 of the frame 154 to emit sound generated by the diaphragm 120. Is a through hole 156a exposed to the outside. The through hole 156a adjusts the amplitude of sound generated by the diaphragm 120 in the space formed by the cap 110 and the housing 150. The amplitude adjusting through-hole 156a enables the multifunction speaker of the present invention to adjust the amplitude of the sound so that it can function not only as a buzzer but also as a receiver and a speaker. The amplitude adjusting through hole 156a is connected to the wave guide groove 158 formed on the bottom of the housing 150 to facilitate sound emission. Such waveguide grooves are very effective for the treatment of sound.

Terminals 151 in the housing are connected terminals 153a, 153a ', 153b and 153b' connected to the coil 140 and fixed terminals 151a, 151a 'and 151b connected to a substrate (not shown). 151b '). Both the connecting terminal and the fixed terminal are exposed to the outside of the housing. In this embodiment, the terminal 151 has a case of having four terminals, but as shown in FIG. 11, six fixed terminals 251a, 251a ', 251a' ', 251b and 251b' ( 251b ") may be used, and the number of terminals is not particularly limited.

The connection terminals 153a, 153a 'and 153b, 153b' having the same polarity among the connection terminals are integrally connected to each other and embedded in the housing 150. The fixed terminals 151a, 151a ', 151b and 151b' are respectively connected from the connection terminals 153a, 153a ', 153b and 153b' of the terminal to the side through the lower part of the housing 150. It is extended. Further, preferably, the housing has a terminal guide groove 155a formed thereon for connecting the lead wire of the coil 140 and the connection terminals 153a and 153b of the terminal. Therefore, the multifunction speaker 100 of the present invention is formed so that the fixed terminals 151a, 151a ', 151b, and 151b' are exposed to the outside from the lower and side surfaces of the housing, and thus can be easily mounted on the surface of any substrate. This has the advantage. In the multifunctional speaker of the present invention, 151a and 151b of the fixed terminals are connected to perform a speaker / buzzer function by acting as a positive electrode and a negative electrode, respectively, and 151a 'and 151b' of other fixed terminals are receivers / Connected to perform the buzzer function.

In the multifunction speaker of the present invention, the core 152 of the housing 150 is integrally formed by being connected to the frame 154, but the core of the housing may have a structure separated from the frame.

Fig. 12 shows various types of cores having this separated structure. The core 252 of FIG. 12A has a basic shape, and the core 252a of FIG. 12B shows a core having a rounded top edge. The core 252a having such a structure can prevent the leakage of magnetic force while increasing the focusing of the magnetic flux, which is advantageous for the vibration control of the diaphragm. The core 252b of FIG. 12C shows a structure having a multi-stage cylindrical shape at the top. A multifunctional speaker having a core of such a structure is advantageous for focusing magnetic flux as in FIG. 12B. In addition, the core 252c of FIG. 12D is formed so that the upper end thereof is larger than the body of the core. This structure of the core can ensure the fixing of the coil 140 in the housing, it will be able to widen the magnetic force distribution. Such separate cores may be inserted into the housing 150 directly without a frame, but in order to effectively dissipate heat generated from the coil, it is preferable to insert the cores into the frame 154.

13 and 14 show an embodiment of the multifunctional speaker having a structure different from that of the multifunctional speaker so far. In the present embodiment, unlike the multifunction speaker of FIG. 5, the multifunction speaker 300 is not provided with a support ring separately, and the support ring 324 is formed integrally with the housing 350. For ease of understanding, the symbols in FIGS. 13 and 14 correspond to those in FIGS. 5 and 6.

In the present exemplary embodiment, the multifunction speaker 300 includes a support ring 324 integrally formed on the upper portion of the housing 350 as shown in FIG. 15. Therefore, since the multifunctional speaker according to the present embodiment is integrally molded with the support ring and the housing, it may be very advantageous in the manufacturing process compared with the multifunctional speaker in which the support ring is assembled. The support ring 324 of the housing 350 may have a jaw 325 formed therein to settle the diaphragm 320, and the fixing ring 326 may be positioned on the outer circumferential surface of the diaphragm 320 again. Secure it firmly. In addition, since the housing 350 has a support ring 324 formed integrally, the terminal guide groove 155a through which the leader line of the coil 340 passes may not be formed at the upper portion of the housing. A guide hole 355b of 350 is formed so that the leader line of the coil 340 is drawn out through the guide hole 355b. In addition, as shown in FIG. 15B showing the bottom of the housing, a terminal guide groove 355a is formed in the lower portion of the housing 350 from the guide hole 355b to connect the connection terminals 353a and 353b of the terminal 351. And is electrically connected. That is, the multifunctional speaker 300 according to the present invention has an advantage of being more easily surface mounted on the substrate by being connected to the lead wire and the connection terminals of the coil inside the housing.

Hereinafter, the operation of the multifunctional speaker of the present invention having such a structure will be described in detail.

Figure 16 shows a cross-sectional structural view of the multifunctional speaker of the present invention having another structure for explaining the operating state of the multifunctional speaker of the present invention. As shown in Figure 16a, the multi-function speaker 100 of the present invention, when a signal having a constant frequency from the outside, the coil 140 is excited while the magnetic force is generated in the core 152 is made of a magnetic plate ( A force for pulling 122 and the diaphragm 120 is generated, which causes the diaphragm 120 to move downward, that is, in the direction of the arrow. Then, when the frequency pulse input signal is reversed, as shown in Fig. 16B, a pushing force is generated on the core 152 and the diaphragm 120 is restored to its original position again with its own elastic force and moves upward, that is, in the direction of the arrow. In the conventional thin plate buzzer 10, even if the diaphragm 12 is attached to the support ring, the diaphragm is not securely fixed, and the vibration is greatly biased downward. The conventional thin plate buzzer 10 is different from the force of pulling the diaphragm 12 downward and the force restored upward is different from the buzzer function. That is, when the speaker signal is applied to the conventional thin plate buzzer 10, a tremor of sound, that is, a cracking sound is generated. In contrast, the multifunction speaker 100 of the present invention can vibrate in a state where the vibration of the diaphragm 120 is balanced up and down because the diaphragm 120 is fixed by the fixing ring 126. This balanced up and down vibration is continuously repeated, and basically the sound generated by the vibration is quickly released to the outside through the sound outlet 112 of the cap and the wave guide groove 158 of the housing.

Particularly, in the present invention, accurate sound can be adjusted according to various driving signals by the amplitude adjusting through hole 156a provided in the housing 150, so that the speaker, receiver, and buzzer functions can be smoothly performed even in a wide frequency band.

17 is a frequency signal characteristic diagram of a speaker, a receiver, and a buzzer for a conventional buzzer, a speaker, a receiver component, and a multifunctional speaker of the present invention, respectively. In the speaker characteristics of FIG. When the multi-function speaker 100 of the present invention is a vibration occurs in accordance with the center frequency input signal may function as a speaker. In particular, the speaker function in the multifunctional speaker of the present invention shows a good response at a much wider frequency than a general speaker component.

In addition, in the receiver characteristic as shown in FIG. 17B, when a signal of about 300 Hz to 3.4 KHz center frequency band is generally input, the multifunction speaker 100 of the present invention shows that the vibration may occur according to the frequency input signal to function as a receiver. have.

In addition, in the buzzer characteristic of FIG. 17C, when a signal of a center frequency band of 2.5 to 3.5KHz is generally input, the multifunction speaker 100 of the present invention may generate a vibration according to the frequency input signal, thereby functioning as a buzzer. In particular, the multifunctional speaker of the present invention shows a very good response in the required center frequency band compared to general buzzer components.

As described above, the multifunctional speaker according to the present invention can perform a speaker, a buzzer, and a receiver function as one component, among other things, and accordingly, an advantage of miniaturizing the electronic device as well as the cost of the electronic device such as a mobile terminal can be achieved. There is this.

In addition, by adopting a new structure, the multifunctional speaker according to the present invention, by forming a strong magnetic field can be a sensitive response in a wide frequency signal band to form accurate sound, improving the quality compared to the respective acoustic components. In particular, the multifunctional speaker of the present invention is free of coil and magnet design, suitable for various specifications, and excellent heat dissipation of heat generated from the coil itself.

In addition, the multi-function speaker according to the present invention can be simplified in the manufacturing process, such as simple assembly of the parts.

Furthermore, the multifunctional speaker according to the present invention can be surface-mounted on a substrate to enable rapid assembly of electronic devices. Such multifunctional speakers are MP3 as well as portable terminals such as mobile phones, PCS, personal digital assistants (PDAs), mobile communication mobiles, and the like. It can be widely used in various electronic products requiring acoustic devices such as laptops, TVs, plasma display panels (PDPs).

Claims (20)

A cap having at least one outlet; A fixed terminal configured to be fixed to a lower surface of the cap to form a space between the cap, a core protruding upward in the center, and to be electrically connected to the substrate so as to be surface-mounted on the substrate; A housing having at least one amplitude adjusting through hole communicating with the outside; A coil disposed in the housing along the outer circumferential surface of the core and electrically connected to the connecting terminals extending from the fixed terminals of the housing in the space; Magnets positioned on the housing at regular intervals along an outer circumferential surface of the coil; A support ring positioned on the housing at a predetermined distance from an outer circumferential surface of the magnet and having a jaw formed at an inner side of the upper end to allow the diaphragm to be placed; A diaphragm fixed to the jaw of the diaphragm, wherein a diaphragm is positioned at an upper center thereof; And Multifunctional speaker comprising a fixing ring for completely fixing the diaphragm fixed to the jaw of the support ring. The method of claim 1, The housing is a multi-function speaker that is molded so that the terminals extending from the core and the terminals forming the fixed terminal and the fixed terminal is molded with an insulating material so as to remove the connecting terminal and the fixed terminal and the terminal is embedded in the housing. The method of claim 2, The core of the housing extends from the frame and integrally formed with the frame. The method of claim 1, The core of the housing is a multifunctional speaker of the separated form that can be inserted into the frame fixed. The method of claim 1, The frame of the housing has at least one hole in the circumferential direction between the magnet and the support ring, the guide member is formed radially at regular intervals on the at least one hole of the frame, the guide member is formed in the hole Multifunctional speaker connected integrally with the housing through. The method of claim 1, The housing is a multifunctional speaker formed with a terminal guide groove for connecting the coil and the connecting terminal on the top. The method of claim 1, And at least one wave guide groove extending from the amplitude adjusting through hole of the housing to a side surface of the housing. The method of claim 1, The connecting terminal is a multi-function speaker in which the terminals of the same polarity are integrally formed to remove the connecting terminal and the fixed terminal, and the terminal is embedded in the housing. The method of claim 1, The fixed terminal extends from the connection terminal to the side through the lower portion of the housing, the multifunction speaker formed so that the fixed terminal is exposed to the outside at the lower and side of the housing to enable surface mounting. The method of claim 9, And at least two fixed terminals. The method of claim 1, Multi-function speaker formed at the top of the cap is the mouth of the cap. The method of claim 1, A multifunctional speaker formed with a plurality of protrusions downward in the upper inner side of the cap. The method of claim 1, Multi-function speaker formed around the outlet of the cap, the boss is formed inside the cap. The method of claim 1, The support ring is a multifunctional speaker made of a nonmagnetic material. The method of claim 1, The fixing ring is a multifunctional speaker made of a nonmagnetic material. The method of claim 1, The diaphragm is a multifunctional speaker made of a magnetic metal material. The method of claim 16, The diaphragm is a multifunctional speaker made of permalloy alloy. The method of claim 1, The support ring on the housing is formed integrally with the housing. The method of claim 18, The housing is formed with a guide hole through which the lead wire of the coil can pass, the terminal guide groove connected to the guide hole is formed in the lower portion of the housing. A portable terminal having a multifunctional speaker according to any one of claims 1 to 19.