KR100764852B1 - Speaker for portable terminal device - Google Patents

Abstract

And a speaker module and a receiver module each consisting of a yoke, a magnet, a plate, an acoustic diaphragm, and a voice coil, wherein the speaker module is installed in a plurality of pieces separated from a single frame, and is installed to face a first direction. The module is installed between the speaker modules in a second direction opposite to the first direction with respect to the frame, and the diaphragm of the speaker unit is coupled to an edge fixed along the edge of the frame in the first direction. Disclosed is a speaker for a portable terminal device in which a diaphragm of a receiver portion is coupled to an edge fixed to a center portion of the frame in the second direction.

Handset, Mobile Phone, Track, Ellipse, Roll, Diaphragm, Edge, Receiver, Slim, Space Efficiency

Description

Speaker for portable terminal device {Speaker for portable terminal device}

1 is a cross-sectional view showing a speaker for a conventional portable terminal device.

2 is a plan view of a speaker according to the present invention.

3 is a cross-sectional view of a speaker according to the present invention.

4 is a bottom view of the speaker according to the present invention.

The present invention relates to a speaker for a portable terminal device, and more particularly, to a speaker in which a receiver function is integrated.

1 is a cross-sectional view showing a speaker for a conventional portable terminal device.

Referring to FIG. 1, a frame 11 having a space on an inner surface thereof, a magnet 14 magnetized in a vertical direction embedded in the frame, a yoke 12 forming a magnetic circuit together with the magnet 14, and a magnet 14. The upper plate 15 attached to the magnetic plate to form a magnetic circuit, the vibration generating plate 16 for the outer end is fixed to the upper end of the frame 11, the voice coil is wound in a cylindrical shape around the lower end of the diaphragm 16 ( 17), the protection plate 19 which covers the open end of the frame 11, and the PCB board 20 joined to one side of the outer surface of the frame 11 are comprised.

In addition, the air hole 18 is formed in the frame 11 at a predetermined position so that the air flows smoothly when the diaphragm 16 vibrates.

In the speaker for a portable terminal device having such a structure, the voice coil 17 existing in the gap between the yoke 12 and the upper plate 15 is joined to the diaphragm 16, so that the electromotive force is moved up and down by an input signal. Sound pressure is generated by vibrating the diaphragm 16 which is generated and adhesively constrained to the frame 11.

However, according to this conventional structure, when only one voice coil is used, when the shape of the speaker is oval or track-shaped in accordance with the portable terminal device, the rolling of the edge of the diaphragm in the uniaxial direction is small. Sufficient movement of the diaphragm corresponding to the amplitude cannot be ensured.

In addition, when the diameter of the voice coil is reduced to solve this problem, another problem occurs that the required performance cannot be realized.

In conclusion, there is a problem that it is practical as a speaker for a portable terminal device, and it is difficult to manufacture an oval or track type having a very short axis.

On the other hand, a receiver is applied to the portable terminal device. When the speaker and the receiver are separately applied in a slim and compact situation, space efficiency cannot be increased, which causes a great obstacle to miniaturization.

The present invention has been made to solve such a conventional problem, and an object of the present invention is to provide a speaker that can be equivalent to a speaker having a large aperture in terms of performance and excellent spatial efficiency for application to a portable terminal device. It is.

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According to the present invention, a plurality of speaker parts are formed separately from a single frame and a receiver part is formed between the speaker parts, each of the speaker parts being a container shape fixed to the frame and open to the frame surface. York; A magnet fixed to the yoke bottom; A plate fixed to the magnet to form a magnetic circuit together with the yoke and the magnet; An acoustic diaphragm for fixing the edge along the surface edge of the frame; And a voice coil having one end fixed to the rear surface of the diaphragm corresponding to the magnetic circuit and the other end extending between the yoke and the magnet, wherein the receiver unit is fixed to the frame and has a container shape opened to the rear surface of the frame. York; A magnet fixed to the yoke bottom; A plate fixed to the magnet to form a magnetic circuit together with the yoke and the magnet; A diaphragm for sound generation, the edge of which is fixed to the center of the rear surface of the frame; And a voice coil having one end fixed to the rear surface of the diaphragm corresponding to the magnetic circuit and the other end extending between the yoke and the magnet.

Preferably, the frame may be either oval or track-shaped.

In addition, a PCB terminal plate may be installed around the yoke of the receiver unit at the rear of the frame.

Hereinafter, with reference to the drawings will be described a preferred embodiment of the present invention.

2 to 4 are plan, sectional and bottom views, respectively, of the speaker according to the present invention.

As shown, the frame 111 has a track shape as a whole, and first and second speaker portions 102 and 104 are formed on the left and right sides in the first direction (upper direction in the drawing), respectively, and the first direction therebetween. The receiver portion 106 is formed in a second direction (lower direction in the drawing) that is opposite to the direction.

The first and second speaker parts 102 and 104 and the receiver part 106 have the same structure.

Hereinafter, for convenience of description, the structure of the first speaker unit 102 and the receiver unit 106 will be described.

The first yoke 112 having a container shape having one end opened is fixed to the frame 111 so that the top thereof is opened. Referring to FIG. 2, when viewed from above, the first yoke 112 is circular and thus the distance from the first yoke 112 to the frame 111 is approximately the same except between the first yokes 112.

The first magnet 114 magnetized in the up and down direction is accommodated and fixed to the bottom of the first yoke 112, and the first plate 115 is fixed to the upper part of the first magnet 114 so that the first yoke 112 and The magnetic circuit is formed together with the first magnet 114.

The first acoustic diaphragm 116 is coupled to the first edge fixed along the upper edge of the frame 111 as a single body. That is, the first vibration plate 116 for sound generation is formed in a track shape like the frame 111.

According to the present invention, one end of the first voice coil 117 is formed on the rear surface of the first diaphragm 116 corresponding to each of the first yokes 112 of the first speaker unit 102 and the second speaker unit 104. The other end thereof is fixed and extends between the first yoke 112 and the first magnet 114.

On the other hand, between the first speaker portion 102 and the second speaker portion 104, the frame-shaped second yoke 112a, one end of which is opened, is fixed to open the lower portion.

On the bottom of the second yoke 112a, the second magnet 114a magnetized in the up and down direction is received and fixed, and the second plate 115a is fixed to the upper portion of the second magnet 114a to fix the second yoke 112a and The magnetic circuit is formed together with the second magnet 114a.

The second vibration plate 116a for sound generation is coupled to a second edge fixed along the center edge of the frame 111 as one unit. That is, the sound generating second diaphragm 116a is formed in a circular shape like the second yoke 112a so that the rolling of the second edge of the second diaphragm 116a is sufficiently uniformly secured as a whole.

In addition, one end of the second voice coil 117a is fixed to the rear surface of the second diaphragm 116a corresponding to the second yoke 112a, and the other end thereof is between the second yoke 112a and the second magnet 114a. Extends.

On the other hand, the PCB terminal plate 120 is attached to the surface corner of the second yoke (112a).

According to the speaker of the present invention having such a structure, although the frame 111 itself is formed in a track shape as a whole, the first voice coil 117 is respectively provided in the first speaker part 102 and the second speaker part 104. Since it is formed small, it is possible to provide a space in which the first diaphragm 116 can sufficiently roll in the short axis direction, that is, the vertical direction in FIG. 2, and thus a sufficient amplitude can be obtained.

In addition, the disadvantage that the magnetic circuit is small and the driving force is reduced by solving a plurality of first voice coil 117 for each of the first yoke (112).

Such a characteristic can be obtained by additionally forming a plurality of speaker parts having the same structure as the first and second speaker parts 102 and 104 even when the length of the long axis is long.

On the other hand, in the case of the receiver part 106, since the separate independent 2nd diaphragm 116a is used, rolling of the 2nd edge of the 2nd diaphragm 116a does not become a problem at all.

Therefore, according to the speaker of the present invention, it is possible to implement the same performance as the speaker having a large aperture while having a slim design with good spatial efficiency in the characteristics of the portable terminal device.

In addition, the speaker and receiver can be integrated to further increase space efficiency, simplifying and miniaturizing the product.

Although the above has been described with reference to the preferred embodiment of the present invention, various changes and modifications are possible at the level of those skilled in the art. Therefore, the scope of the present invention should not be construed as being limited to the above embodiment, but should be determined by the claims described below.

As described above, according to the present invention, by integrating the speaker and the receiver, the space efficiency can be further increased, and the product can be simplified and downsized.

In addition, by making the voice coil small in each speaker section, a space for the diaphragm can be rolled sufficiently can be obtained, and sufficient amplitude can be obtained. A plurality of voice coils are provided for each yoke, so that the magnetic circuit is small, so that the driving force is reduced. The disadvantage of being smaller can be solved.

Accordingly, the mobile terminal device can have a slim design with good spatial efficiency and can implement the same performance as a large-sized speaker.

Claims (4)

It includes two speaker parts formed separately from the frame formed in any one of a single oval or track shape, and a receiver part formed between the speaker parts, Each of the speaker units, A first yoke of a container shape fixed to the frame and open to the frame surface; A first magnet fixed to the first yoke bottom; A first plate fixed on the first magnet to form a magnetic circuit together with the first yoke and the first magnet; A first diaphragm for sound generation fixed to a first edge coupled along a surface edge of the frame; And One end is fixed to the rear surface of the first diaphragm corresponding to the magnetic circuit and the other end faces the first direction while having the first voice coil extending between the first yoke and the first magnet, The receiver unit, A second yoke in the shape of a container fixed to the frame and open to the back of the frame; A second magnet fixed to the bottom of the second yoke; A second plate fixed on the second magnet to form a magnetic circuit together with the second yoke and the second magnet; A second diaphragm for sound generation fixed to a second edge coupled to a central rear surface of the frame; And One end is fixed to the rear surface of the second diaphragm in correspondence to the magnetic circuit, and the other end has a second voice coil extending between the second yoke and the second magnet while being opposite to the first direction with respect to the frame. Facing in the second direction, And a PCB terminal plate is installed around the second yoke on the rear surface of the frame. delete delete A speaker module consisting of a first yoke, a first magnet, a first plate, a first diaphragm for sound generation and a first voice coil, and a second yoke, a second magnet, a second plate, a second diaphragm and a second voice for acoustic generation A receiver module consisting of a coil, The speaker module is installed in two separate to the frame of a single body is installed so as to face the first direction, the receiver module is installed between the speaker module in a second direction opposite to the first direction with respect to the frame Installed as The first diaphragm is fixed to a first edge coupled along the edge of the frame in the first direction, and the second diaphragm is fixed to a second edge coupled to the central portion of the frame in the second direction. Speaker for portable terminal device.

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