KR100703484B1 - Speaker device for portable terminal - Google Patents

Abstract

According to an aspect of the present invention, there is provided a speaker device of a portable terminal including a cylindrical induction part housing mounted to a rear of a speaker unit, a connection part housing extending from one side of the induction part housing, and an extension part housing extending to an end of the connection part housing. It discloses a speaker device of a portable terminal having a resonance case, wherein the connecting portion housing and the extension housing extends in parallel to the radial direction of the induction portion housing. The speaker device of the portable terminal configured as described above provides a resonance case mounted to the rear of the speaker unit, thereby improving the sound quality of the output sound by reinforcing the sound of the bass region. In addition, by providing a resonance case shaped like the letter 'P', there is an advantage that it is easy to mount in the space of the limited terminal housing.

Handset, speaker, bass, resonance

Description

Speaker device for portable terminal {SPEAKER DEVICE FOR PORTABLE TERMINAL}

1 is an exploded perspective view showing a speaker device of a portable terminal according to an embodiment of the present invention;

FIG. 2 is a cross-sectional view illustrating a state in which the speaker device illustrated in FIG. 1 is assembled;

3 is a plan view showing a resonance case of the speaker device shown in FIG.

<Description of Signs of Major Parts of Drawings>

100: speaker unit 101: speaker unit

102: resonance case 121: induction housing

122: connection housing 123: extension housing

130: damper 104: speaker cover

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a portable terminal, and more particularly, to a speaker device of a portable terminal device that can be easily mounted in a limited space and can provide sound close to the original sound by reinforcing bass.

In general, a portable terminal refers to a device that provides a wireless communication function between a user and a user or a user and a service provider through a mobile communication base station, and the like, including voice call service, short message transmission from mobile banking, Various types of service contents, such as watching TV, playing online games, and video on demand, are provided to a user through a portable terminal.

The portable terminal as described above has a bar-type terminal provided with an input / output device such as a communication circuit, a transmitter, a receiver, and the like in one housing, a flip-type terminal provided with a flip cover in the bar-type terminal, and a pair of housings open and close and open and close. The device is classified into a foldable terminal or the like distributed in each housing. Recently, sliding type terminals have been introduced to satisfy various tastes of users while increasing portability and convenience of use with folding type terminals.

Mobile communication services using such mobile terminals were initially limited to voice calls, short message transmission, etc., but also multimedia services and digital multimedia broadcasting (DMB), as well as transmission of games, music and video files, and online games. It is expanded to "."

Prior to the commercialization of multimedia services and DMB, display devices of portable terminals have already implemented high-definition and color screens by using thin film transistor (TFT) devices instead of monochromatic liquid crystal display devices. Using such display devices, a color screen of sufficient image quality for multimedia service or DMB viewing can be provided.

Meanwhile, in order to provide a speaker device suitable for such a multimedia service and a DMB service, separate speaker units are additionally installed in addition to the speaker unit that outputs a sign sound and a ring tone. Through such added speaker units, the portable terminal implements stereo sound.

However, due to the limited space of the portable terminal, the performance of the additionally installed speaker units is not fully exhibited. That is, the sound output to the rear of the speaker unit cancels or distorts the sound of the bass region due to the phase difference from the sound output to the front, and the sound reflected in the terminal affects the sound pressure or sound quality again. There is a problem of lowering.

In order to solve the above problems, it is an object of the present invention to provide a speaker device of a portable terminal that can implement the improved bass characteristics and sound quality by providing a sealed resonant structure that is easy to install in the portable terminal.

In order to achieve the above object, the present invention provides a speaker device of a portable terminal,

A resonance case including a cylindrical induction part housing mounted to the rear of the speaker unit, a connection part housing extending from one side of the induction part housing, and an extension part housing extending to an end of the connection part housing,
The connection part housing and the extension part housing disclose a speaker device of a portable terminal extending in parallel to the radial direction of the induction part housing.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the following description of the present invention, if it is determined that the detailed description of the related known function or configuration may unnecessarily obscure the subject matter of the present invention, the detailed description thereof will be omitted.

1 and 2, the speaker device 100 of a portable terminal according to an exemplary embodiment of the present invention includes a resonance case 102 mounted in a housing 11 of a terminal together with a speaker unit 101. Equipped.

An opening 13 is formed on the housing 11 of the portable terminal to smoothly output the sound generated by exposing the speaker unit 101. The opening 11 is formed along the periphery of the opening 13. The speaker unit 101 is mounted in a state of being supported on the side. In this case, a damper 103 is interposed between the inner surface of the housing 11 and the speaker unit 101. The damper 103 blocks the sound generated from the speaker unit 101 and traveling to the front thereof into the housing 11.

The opening 13 is closed by the speaker cover 104. The speaker cover 104 is attached to an outer surface of the housing 11, and has a plurality of speaker holes 141 to output sound generated from the speaker unit 101 to the outside.

Referring to FIG. 3, the resonance case 102 is composed of an induction part housing 121, a connection part housing 122, and an extension part housing 123.

The induction part housing 121 is mounted to the rear of the speaker unit 101 to sequentially advance the sound output to the rear of the speaker unit 101 to the connection part housing 122 and the extension part housing 123. do. In mounting the induction part housing 121 to the rear of the speaker unit 101, the housing 11, the speaker unit 101, and the induction part housing 121 including the damper 103 may be formed by a screw or the like. They must be fastened together or glued together. When considering post repair due to damage of the speaker unit 101, the induction part housing 121, etc., it may be preferable to be fastened together by a screw or the like.

The fastening of the housing 11, the speaker unit 101, and the induction part housing 121 together is to prevent them from vibrating at different frequencies when the speaker unit 101 generates sound. In addition, the speaker unit 101 and the induction part housing 121 are in close contact with each other to prevent the sound output to the rear of the speaker unit 101 from leaking out of the induction part housing 121.

On the other hand, the inner surface of the induction unit housing 121 is composed of a curved surface to prevent the sound output from the rear of the speaker unit 101 is diffusely reflected in the induction unit housing 121, and the reflected sound to the connection portion Advance to the housing 122. Therefore, the sound reflected by the inner surface of the induction part housing 121 is returned to the connection part housing 122 without affecting the speaker unit 101 or distorting the output sound.

The resonance frequencies of the speaker devices are inversely proportional to the volume of the internal space of the speaker device and the length of the resonance space, and have a property that is proportional to the cross-sectional area of the resonance space. Therefore, in order to secure the sound quality of the bass region of the sound output from the speaker device, it is preferable that the cross-sectional area is small and the volume and length of the internal space of the speaker device are large.

The speaker device according to the present invention includes a connection part housing 122 extending from an end of the connection part housing 122 in order to secure sound quality of the bass region. The connection part housing 122 is to advance the sound transmitted from the induction part housing 121 through the connection part housing 122. At this time, the connecting portion housing 122 has a shape in which the cross-sectional area gradually decreases away from the induction portion housing 121, and the extension portion housing 123 extends from an end thereof.

The gradual decrease in the cross-sectional area of the connection part housing 122 as the distance from the induction part housing 121 is to reduce the cross-sectional area of the internal space of the resonance case 102, and also extends from the end of the connection part housing 122. The extension of the sub housing 123 is to increase the length of the resonance case 102. In this case, the cross-sectional area of the extension part housing 123 is equal to the cross-sectional area of the end of the connection part housing 122 and is constantly maintained along the longitudinal direction. As a result, the volume and length of the speaker device 100 can be secured, and the cross-sectional area can be reduced.

In addition, the connection part 122 is formed in a shape that gradually decreases while sufficiently securing a cross-sectional area at a position adjacent to the induction part housing 121, so that sound is transferred from the induction part housing 121 to the connection part housing 122. When entering smoothly, it does not cause diffuse reflection.

The induction part housing 121 is formed in a cylindrical shape, and the connection part housing 122 and the extension part housing 123 extend at least one side in a straight line. In this case, the connection part housing 122 and the extension part housing 123 extend in parallel to the radial direction of the induction part housing 121. Therefore, the resonance case 102 has a letter 'P' shape, which can reduce the interference with the internal components of the terminal, such as a printed circuit board when installed in the housing 11 of the terminal. That is, within the thickness range of the terminal housing, a part of the resonance case 102, that is, the connection part housing 122 or the extension housing 123 may be mounted in a form overlapping with a printed circuit board. At this time, a portion of the printed circuit board overlapping with the connection part housing 122 or the extension part housing 123 may be disposed to utilize a limited component mounting space by disposing a passive element having a smaller thickness than other elements.

In the foregoing detailed description of the present invention, specific embodiments have been described. However, it will be apparent to those skilled in the art that various modifications can be made without departing from the scope of the present invention.

As described above, the speaker device of the portable terminal according to the present invention provides a resonance case mounted to the rear of the speaker unit, thereby improving the sound quality of the output sound by reinforcing the sound of the bass region. In addition, by providing a resonance case of the shape of the letter 'P', there is an advantage that it is easy to mount in the space of the limited terminal housing.

Claims (9)

In the speaker device of a portable terminal, A resonance case including a cylindrical induction part housing mounted to the rear of the speaker unit, a connection part housing extending from one side of the induction part housing, and an extension part housing extending to an end of the connection part housing, And the connection part housing and the extension part housing extend in parallel to the radial direction of the induction part housing. The speaker device of claim 1, wherein the speaker unit is mounted on an inner surface of the housing of the portable terminal, and a damper is interposed between the speaker unit and the inner surface of the housing. The speaker device of claim 1, wherein an inner surface of the induction part housing faces a rear surface of the speaker unit and is formed in a curved surface. The speaker of claim 1, wherein the inner surface of the induction part housing is formed to have a curved surface, and the sound output to the rear of the speaker unit and reflected by the inner surface of the induction part housing proceeds to the connection part housing. Device. The speaker device of claim 1, wherein the connection part housing gradually decreases in cross-sectional area as it moves away from the induction part housing. The speaker device of claim 1, wherein the extension housing extends in a shape having a constant cross-sectional area along its longitudinal direction. The speaker device of claim 1, wherein a part of the sound generated from the speaker unit sequentially passes through the connection part housing and the extension part housing through the induction part housing. The speaker device of claim 1, wherein the resonance case has a letter 'P' shape. According to claim 1, An opening formed on a housing of the portable terminal to expose the speaker unit mounted therein; And And a speaker cover mounted to the opening to protect the speaker unit. The speaker cover comprises a plurality of speaker holes for outputting the sound generated from the speaker unit.

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