KR100364119B1 - 2 channel integration and thin type speaker - Google Patents

Abstract

Disclosed is a two-channel integrated thin speaker, in which speakers are installed to face opposite directions on an upper side and a lower side of one frame, respectively. In the two-channel integrated thin speaker, the first diaphragm and the first magnetic circuit are installed above one side of the frame, and the second diaphragm and the second magnetic circuit are installed below the other side of the frame to face each other. Therefore, the thickness is remarkably reduced as compared with conventional two-channel speakers installed on the same axis. In addition, since the first and second diaphragms and the first and second magnetic circuits are installed in one frame, a work process is simpler than that of a conventional two-channel speaker combining the frame and the frame. Therefore, the cost is reduced.

Description

2-channel integrated thin speaker {2 CHANNEL INTEGRATION AND THIN TYPE SPEAKER}

The present invention relates to a two-channel integrated thin speaker, and more particularly, to a two-channel integrated thin speaker, in which speakers are installed so as to face opposite directions on one side above and one side below one frame.

A configuration and a manufacturing method of a conventional two-channel speaker will be described with reference to FIG. 1. 1 is a cross-sectional view showing a schematic configuration of a conventional two-channel speaker.

As shown, the first speaker 10 is provided. The first speaker 10 covers the first magnetic frame 12 and the first magnetic circuit 12 and the first magnetic circuit 12 installed inside the first frame 11 in a cylindrical shape. Has a first diaphragm 17 coupled thereto. The first magnetic circuit 12 is a metal material mounted on the first magnet 14 and the first magnet 14 provided in the inner space of the c-shaped first yoke 13 and the first yoke 13 forming a magnetic path. And a first voice coil 16 mounted to the first diaphragm 18 so as to be positioned between the first pole piece 15 and the first yoke 13 and the first magnet 14. Reference numeral 19 is a terminal plate connected to the first voice coil 16.

Then, the second speaker 20 having the same configuration as the first speaker 10 but different in size is provided, and the rear surface of the first frame 11 of the first speaker 10 and the second speaker 20 are provided. The rear surface of the second frame 21 is coupled to each other to form a two-channel speaker.

When the first speaker 10 is installed to face the inside of the mobile communication terminal and the second speaker 20 is largely sized to face the outside of the mobile communication terminal, the first speaker 10 functions as a receiver. And the second speaker 20 is to function as a speaker.

In the conventional two-channel speaker configured as described above, since the first speaker 10 having the predetermined thickness t1 and the second speaker 20 having the predetermined thickness t2 have a form in which they are coupled to the same axis, the overall thickness (t) has the disadvantage of thickening.

In addition, since the first and second speakers 10 and 20 are separately manufactured, the first and second speakers 10 and 20 must be coupled to each other. have.

The present invention has been made to solve the above problems, and an object of the present invention is to provide a two-channel integrated thin speaker that can be reduced in thickness and cost at the same time.

1 is a cross-sectional view showing a schematic configuration of a conventional two-channel speaker.

Figure 2 is a cross-sectional view showing a schematic configuration of a two-channel integrated thin speaker according to an embodiment of the present invention.

* Description of the symbols for the main parts of the drawings *

100: speaker 110: frame

111: seating groove 113: seating hole

121,125: first and second diaphragm 130,140: first and second magnetic circuit

A two-channel integrated thin speaker according to the present invention for achieving the above object, the frame having a predetermined length and a seating groove is formed on one side and the other side lower side is formed with a seating hole in the opposite direction to the seating groove; A first diaphragm coupled to one side of the frame to cover the seating groove and a second diaphragm coupled to the other side of the frame to cover the seating hole; A c-shaped first yoke seated in the seating groove facing the first diaphragm, a first magnet installed inside the first yoke and having a predetermined distance from an inner circumferential surface of the first yoke, coupled to the first magnet A first pole piece having a predetermined distance from an inner circumferential surface of the first yoke, a bobbin coupled to the first diaphragm, and a coil wound on the bobbin, positioned between the inner circumferential surface of the first yoke and the outer circumferential surface of the first magnet; A first magnetic circuit comprising a first voice coil; The c-shaped second yoke, which is seated in the seating hole facing the second diaphragm, is installed inside the second yoke, is coupled to the second magnet having a predetermined distance from the inner circumferential surface of the second yoke, and the second magnet. A second pole piece having a predetermined distance from an inner circumferential surface of the second yoke, a bobbin coupled to the second diaphragm to be positioned between an inner circumferential surface of the second yoke and an outer circumferential surface of the second magnet, and a coil wound on the bobbin; A second magnetic circuit comprising a second voice coil; The first and second terminal plates are respectively provided above the other side and below the one side of the frame and connected to the first and second voice coils, respectively.

Hereinafter, a two-channel integrated thin speaker according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

2 is a cross-sectional view showing a schematic configuration of a two-channel integrated thin speaker according to an embodiment of the present invention.

Speaker 100 according to the present embodiment, as shown, has a frame 110 of a predetermined length. A seating groove 111 and a seating hole 113 are formed at an upper side of the frame 110 and a lower side of the other side 110b of the frame 110 parallel to the longitudinal direction of the frame 110, respectively. At this time, the seating hole 113 is positioned on the radially outer side of the seating recess 111, and the seating recess 111 and the seating hole are positioned such that the seating recess 111 is positioned at the radially outer side of the seating recess 113. 113) is formed. That is, the seating groove 111 and the seating hole 113 are formed on the upper side and the lower side with respect to the longitudinal center of the frame 110, respectively, and are formed to face in opposite directions. And, the diameter (L1) of the seating groove 113 and the diameter (L2) of the seating hole 113 is formed different from each other, which will be described later.

The frame 110 is provided with first and second diaphragms 121 and 125 having different sizes to cover the seating recess 111 and the seating hole 113, respectively. At this time, the second diaphragm 125 is coupled to the other side surface 110b of the frame 110 opposite to one side 110a of the frame 110 on which the first diaphragm 121 is installed.

The first magnetic circuit 130 is installed in the seating recess 111 and the first diaphragm 121. The first magnetic circuit 130 is installed inside the c-shaped first yoke 131 and the first yoke 131 that is press-fitted into the inner circumferential surface of the seating groove 111 and the predetermined inner circumferential surface of the first yoke 131. A cylindrical first magnet 133 having an interval, a first pole piece 135 made of a metal material coupled to the first magnet 133 and having a predetermined distance from an inner circumferential surface of the first yoke 131, The first voice coil 137 is coupled to the first diaphragm 121 so as to be positioned between the inner circumferential surface of the first yoke 131 and the outer circumferential surface of the first magnet 133. The first voice coil 137 has a bobbin 137a coupled to the first diaphragm 121 and a coil 137b wound around the bobbin 137a.

The first voice coil 137 is connected to the first terminal plate 151 provided on the other side 110b of the frame 110 to receive external power. Referring to the driving, electromagnetic force is generated by the electric field formed by the input acoustic electric signal and the magnetic force between the first yoke 131 and the first magnet 133 to drive the first diaphragm 151. Then, the signal is output by the vibration of the air.

The seating hole 113 and the second diaphragm 125 have the same configuration as the first magnetic circuit 130, but are provided with a second magnetic circuit 140 having a different size. The second magnetic circuit 140 also has a second yoke 141, a second magnet 143, a second pole piece 145, and a second voice coil 147. The second voice coil 147 also has a bobbin 147a coupled to the second diaphragm 125 and a coil 147b wound around the bobbin 147a. In addition, a second terminal plate 155 connected to the second voice coil 147 is provided below one side surface 110a of the frame 110. The second diaphragm 125 is also driven by the same principle as the first diaphragm 121.

In the two-channel integrated thin speaker 100 according to the present exemplary embodiment, the first diaphragm 121 and the first magnetic circuit 130 face each other, and the second diaphragm 125 and the second magnetic circuit 140 face each other. Since it is in the opposite direction, it is driven in both directions.

In addition, since the sizes of the first diaphragm 121 and the first magnetic circuit 130 and the sizes of the second diaphragm 125 and the second magnetic circuit 140 are different from each other, any one having a large size may be used as a speaker. The other smaller one can be used as a receiver.

In case of installation and use in a mobile communication terminal or hands free, the first diaphragm and the magnetic circuits 121 and 130 with smaller sizes are disposed outside, and the second diaphragm and magnetic circuits 125 and 140 with larger sizes are disposed inside. In addition, the first magnetic circuit 130 used as the receiver is preferably installed on only one side (110a) and the rest of the seating groove 111 is closed. This is to minimize the interference between the part used as a speaker and the part used as a receiver.

As described above, in the two-channel integrated thin speaker according to the present invention, the first diaphragm and the first magnetic circuit are installed above one side of the frame, and the second diaphragm and the second magnetic circuit are installed below the other side of the frame. Facing in opposite directions. Therefore, the thickness is remarkably reduced as compared with conventional two-channel speakers installed on the same axis.

In addition, since the first and second diaphragms and the first and second magnetic circuits are installed in one frame, a work process is simpler than that of a conventional two-channel speaker combining the frame and the frame. Therefore, the cost is reduced.

In the above, the present invention has been described in accordance with one embodiment of the present invention, but those skilled in the art to which the present invention pertains have been changed and modified without departing from the spirit of the present invention. Of course.

Claims (2)

A frame having a predetermined length and having a seating groove formed on an upper side thereof, and a seating hole formed in a direction opposite to the seating groove below the other side thereof; A first diaphragm coupled to one side of the frame to cover the seating groove and a second diaphragm coupled to the other side of the frame to cover the seating hole; A c-shaped first yoke seated in the seating groove facing the first diaphragm, a first magnet installed inside the first yoke and having a predetermined distance from an inner circumferential surface of the first yoke, coupled to the first magnet A first pole piece having a predetermined distance from an inner circumferential surface of the first yoke, a bobbin coupled to the first diaphragm, and a coil wound on the bobbin, positioned between the inner circumferential surface of the first yoke and the outer circumferential surface of the first magnet; A first magnetic circuit comprising a first voice coil; The c-shaped second yoke, which is seated in the seating hole facing the second diaphragm, is installed inside the second yoke, is coupled to the second magnet having a predetermined distance from the inner circumferential surface of the second yoke, and the second magnet. A second pole piece having a predetermined distance from an inner circumferential surface of the second yoke, a bobbin coupled to the second diaphragm to be positioned between an inner circumferential surface of the second yoke and an outer circumferential surface of the second magnet, and a coil wound on the bobbin; A second magnetic circuit comprising a second voice coil; And, And a first terminal and a second terminal plate respectively provided above the other side of the frame and below the one side, and connected to the first and second voice coils, respectively. The method of claim 1, The diameter of the seating hole is provided larger than the diameter of the seating groove, The size of the first diaphragm and the first magnetic circuit is formed to correspond to the size of the seating groove and the size of the second diaphragm and the second magnetic circuit is formed to correspond to the size of the seating hole Integrated thin speaker.