KR20030059604A - Receiver United in Speaker - Google Patents

Abstract

PURPOSE: A speaker built-in type receiver is provided to improve a magnetic force of a magnetic circuit gap which is formed at the inside and outside diameters of a main magnet in order to output the high equality of sound. CONSTITUTION: A frame(39) has a circle space at an inner side thereof. A yoke(34) is installed at the inner side of the frame(39) and functions as an upper plate. A main magnet(33) is installed at an upper end of the yoke(34). The upper plate(35) is connected to an upper end of the main magnet(33) and functions as the yoke. A sub magnet(38) is mounted to a center of the upper plate(35). A speaker(30) includes the first vibrating plate(31) and the first cover(41). The first vibrating plate(31) is adhered to the upper end of the frame(39). The first cover(41) is formed at an upper portion of the first vibrating plate(31). A receiver(40) includes the second vibrating plate(32) and the second cover(45). The second vibrating plate(32) is adhered to a lower end of the frame(39). The second cover(45) is formed at an upper portion of the second vibrating plate(32).

Description

Speaker integrated receiver {Receiver United in Speaker}

The present invention relates to a receiver in which a speaker and a speaker are integrally coupled, and more particularly, a ringing tone that is mounted in various mobile communication terminals such as a cellular phone (for example, cellular, PCS, PDA, and IMT-2000). The present invention relates to a receiver having a speaker integrated with a speaker for generating a voice signal and a receiver for reproducing a voice 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 including 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 vibrates the diaphragm attached to the voice coil. It generates a sound pressure of a predetermined magnitude that can be recognized by the human ear ultimately.

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 upper 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 bound to the frame to generate sound pressure. The diaphragm has various shapes of waves in order to remove the buckling phenomenon and excellent response during the up and down oscillation, and the shape of the diaphragm acts as a design variable having 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, but recently, an integrated type is used in most cases.

That is, in the cross-sectional view of FIG. 1, the speaker integrated receiver for outputting an acoustic signal, a ringing sound, and the like of the mobile communication terminal includes a yoke 2 provided inside the frame 1 and a magnet 3 for transmitting magnetic force to the yoke. And a plate (6) receiving magnetic force of a different polarity from the yoke from the magnet, a first vibration plate (5) for converting vibrations to a sound at the top of the plate, and a first vibration plate coupled to the yoke and the magnet A speaker unit 9 having a first voice coil 4 configured to give a vibration force in the axial direction according to the flow of current between the speakers 9; And a second vibrating plate 5 for converting vibrations to a sound at the bottom of the plate, and a second vibrating plate coupled to the second vibrating plate and applying vibration force in the axial direction as a current flows between the yoke and the magnet. It is composed of the receiver unit 10 is composed of two voice coil (4).

In the case where the receiver of FIG. 1 is coupled to the speaker of FIG. 1, the magnetic circuit by the magnet 3 is used to function as a speaker and a receiver, and the configuration is to minimize the thickness.

In the case of the speaker integrated receiver of Fig. 2, the frame 20, the yoke 22 provided inside the frame, the first magnet 21 coupled to the lower end of the yoke, and the lower portion of the yoke A speaker unit 28 including a first vibration plate 23 installed and a first voice coil 24 coupled to the first vibration plate; The second magnet 25 coupled to the center upper end of the yoke 22, the second vibrating plate 26 installed on the yoke, and the second boy coil 27 coupled to the second vibrating plate are provided. It is composed of the receiver unit 29 included.

In the case where the receiver of FIG. 2 is combined, two magnetic circuits by two magnets 21 and 25 may be used to function as a speaker and a receiver, and the yoke and the magnet may be minimized in order to minimize thickness. The hole is formed in the structure.

Thus, as a conventional speaker integrated receiver, Figure 1 is configured to face the yoke of the speaker, in the case of Figure 2 in order to reduce the thickness (hole) in the hole of the speaker frame to insert into the receiver frame, and The magnet is composed between the frames.

However, in the conventional case, although the receiver and the speaker are integrated to minimize the thickness and slim, the magnetic flux density cannot be improved. Moreover, when two magnetic circuits are used, workability and yield are deteriorated, resulting in an increase in production cost of the product.

SUMMARY OF THE INVENTION In view of the above problems, the present invention allows a speaker and a receiver to function using one magnetic circuit, and is formed in the inner diameter and the outer diameter of the main magnet by the configuration of two diaphragms and a main magnet and a sub magnet. An object of the present invention is to provide a speaker integrated receiver capable of outputting high-quality sound by improving magnetic force of a magnetic circuit gap.

Furthermore, the present invention is designed in such a way that the speaker and the receiver are integrated to implement slimming and miniaturization, and the speaker and the receiver can be driven separately to solve safety problems and improve the work process.

1 and 2 are cross-sectional views of a conventional speaker integrated receiver,

3 is a plan view and a cross-sectional view of a speaker integrated receiver according to the present invention;

4 is a sectional view of an essential part of a speaker integrated receiver according to the present invention;

♣ Explanation of symbols for main part of drawing ♣

30: speaker part 31, 32: diaphragm

33, 38: Magnet 34: York

35: upper plate 36, 37: voice coil

39: frame 40: receiver section

41, 45: Cover 42, 46: Sound outlet

The present invention to achieve the above object, the frame having a predetermined circular space inside; A yoke installed inside the frame and having a function of an upper plate; A main magnet configured at the top of the yoke; An upper plate coupled to an upper end of the magnet and having a function of a yoke; A sub magnet mounted at the center of the upper plate; The first vibration plate is bonded to the upper end of the frame to generate a sound of a predetermined frequency due to the vibration of the sound pressure in the speaker mode, and a magnetic field formed in the main magnet by a voice current applied to the first vibration plate applied to the first A speaker unit including a first voice coil for vibrating the diaphragm and a first cover having a plurality of sound emission ports formed on the first vibration plate; The second vibrating plate attached to the lower end of the frame to generate a sound of a predetermined frequency by vibration by sound pressure when in the receiver mode, and the main magnet, the sub-magnet and the upper plate by the voice current applied to the second vibrating plate. And a receiver unit including a second voice coil for vibrating the second vibration plate with a magnetic field formed therein, and a second cover having a plurality of sound discharge ports formed on the second vibration plate.

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

3 is a plan view and a cross-sectional view of a speaker integrated receiver according to the present invention.

The speaker integrated receiver of the present invention is divided into the speaker unit 30 and the receiver unit 40 in the speaker mode and the receiver mode when the input and output audio and data signals, the speaker unit and the receiver unit integrally to the frame 39 Are accepted.

As described above, the speaker integrated receiver includes a main magnet 33 and an upper plate 35 in a single frame 39.

The main magnet 33 preferably applies a permanent magnet, and an intrinsic magnetic flux that is bridged from the main magnet 33 is formed in a predetermined direction. An upper plate 35 having a yoke function is mounted on an upper end of the main magnet 33. The upper plate 35 is fixed to the upper end of the main magnet 33 in a shape recessed inside.

In addition, a yoke 34 is installed inside the frame 39, a main magnet 33 is mounted on an upper end of the yoke, and the yoke 34 has a function of an upper plate at the same time. In the center of the upper plate 35 is mounted a sub-magnet 38, which is a permanent magnet, the sub-magnet 38 is located at the center of the upper plate 35 to maximize the magnetic circuit formed by the yoke and the magnet It is.

Based on this configuration, in the speaker unit 30, the first vibration plate 31 which generates a sound of a predetermined frequency by vibration due to sound pressure in the speaker mode is adhered to the upper end of the frame 39, and the applied voice current is applied. A first voice coil 36 for vibrating the first vibration plate 31 by a magnetic field formed in the main magnet 33 is attached to the first vibration plate 31, and an upper portion of the first vibration plate 31. The first cover 41 having a plurality of sound discharge ports 42 is covered therewith.

In the receiver 40, the second vibration plate 32 which generates sound of a predetermined frequency by vibration due to sound pressure when in the receiver mode is adhered to the lower end of the frame 39, and the main magnet is applied by the applied voice current. A second boy coil 37 for vibrating the second vibrating plate by the magnetic field formed in the 33 and the sub magnet 38 and the upper plate 35 is attached to the second vibrating plate 32, and the second vibrating plate The upper part of the 32 is covered with a second cover 45 having a plurality of sound discharge openings 46 formed therein.

As described above, according to the present invention, the speaker and the receiver are integrated and applied to a bidirectional micro speaker that is driven separately, using two diaphragms 31 and 32, a ring main magnet 33, and a sub magnet 38. It is a structure that drives and receiver separately, maximizing gap gap of magnetic circuit.

The voice coils 36 and 37 are disposed on the first vibration plate 31 of the speaker unit 30 and the second vibration plate 32 of the receiver unit 40 so as to face inward. The upper plate 35 and the yoke 34 are designed to use the outer diameter of 33) as the magnetic circuit of the speaker unit 30, and the inner diameter to be used as the magnetic circuit of the receiver unit 40. The upper plate 35 serves as a function of the yoke and a magnetic circuit for driving the speaker unit 30. In addition, by installing the sub-magnet 38 in the upper plate 35 to maximize the magnetic circuit, by implementing the upper plate 35 to perform the function of the yoke 34 and the function of the upper plate 35 at the same time The magnetic circuit for driving the receiver 40 is formed.

Next, the magnetic circuit will be described in detail with reference to FIG. 4. First, the first voice coil 36 of the speaker unit 30 includes a first space 43 formed between the yoke 34 and the main magnet 33. The second voice coil 37 of the receiver 40 is located in the second magnet 47 formed between the sub magnet 38 and the upper plate 35 and the main magnet 33.

This uses the inner and outer diameters of the main magnet 33 as different magnetic circuits using the main magnet 33 and the sub magnet 38, and amplifies the magnetic flux density of the receiver 40 through the sub magnet 38. It is.

In addition, the yoke 34 and the upper plate 35 may play the same role as each other, so that the first vibrating plate 31 for the speaker and the second vibrating plate 32 for the receiver are separately driven in each magnetic circuit. It is.

As described above, the speaker integrated receiver of the present invention constitutes an upper plate and a sub magnet having functions of a yoke, a main magnet, and a yoke in one frame, and implements a speaker unit using a magnetic circuit formed by the main magnet and the yoke. The main magnet, the upper plate and the sub magnet are formed by the receiver circuit using the magnetic circuit, and the speaker unit and the receiver unit are integrated to reduce the size and slimness, and to secure space when mounting the set.

In addition, the separation of the speaker and the receiver to solve the functional and safety problems, in particular by the installation of the sub-magnet to maximize the magnetic flux density of the receiver to output more improved sound quality, and to reduce the manufacturing cost, The present invention may be sufficiently changed, converted, substituted, and replaced in consideration of the present invention, and is not limited to the above.

Claims (2)

A frame having a predetermined circular space therein; A yoke installed inside the frame and having a function of an upper plate; A main magnet configured at the top of the yoke; An upper plate coupled to an upper end of the magnet and having a function of a yoke; A sub magnet mounted at the center of the upper plate; The first vibration plate is bonded to the upper end of the frame to generate a sound of a predetermined frequency due to the vibration of the sound pressure in the speaker mode, and a magnetic field formed in the main magnet by a voice current applied to the first vibration plate applied to the first A speaker unit including a first voice coil for vibrating the diaphragm and a first cover having a plurality of sound emission ports formed on the first vibration plate; The second vibrating plate attached to the lower end of the frame to generate a sound of a predetermined frequency by vibration by sound pressure when in the receiver mode, and the main magnet, the sub-magnet and the upper plate by the voice current applied to the second vibrating plate. And a receiver unit including a second voice coil for vibrating the second vibration plate with a magnetic field formed therein, and a second cover having a plurality of sound emission ports formed on an upper portion of the second vibration plate. The method of claim 1, wherein the first voice coil is located in a first space formed between the yoke and the main magnet, the second voice coil is located in a second space formed between the sub magnet and the upper plate and the main magnet. Speaker integrated receiver.