KR200359898Y1 - Two way speaker - Google Patents

Abstract

The present invention discloses a bidirectional speaker in which a speaker for generating a ringing tone in one direction and a receiver for reproducing a call voice in the other direction are integrally formed. The bidirectional speaker according to the preferred embodiment of the present invention includes a frame having a predetermined cylindrical structure, a yoke including a stage having a predetermined width on an inner wall, and a flange having a predetermined width on an outer circumferential surface thereof. The speaker unit including a first magnet, a first diaphragm, and a first coil is formed above the yoke. Below the yoke, a receiver portion including a second magnet, a second diaphragm, and a second coil is formed. The inner diameter of the first coil and the second coil is preferably the same.

Description

Two-way speaker

The present invention relates to a speaker used in a voice communication device, and more particularly, to a bidirectional speaker in which a speaker for generating a ringing sound in one direction and a receiver for reproducing a call voice in the other direction are integrally formed.

Previously, a voice communication device such as a mobile phone was equipped with a receiver for transmitting voice and a speaker for generating a ringing tone, but in recent years, the product has been miniaturized and lightened due to the development of design and technology. Two-way speakers are mainly installed.

As shown in FIG. 1, the bidirectional speaker according to the related art has magnets 3a and 3b on both sides of the yoke 2 integrally coupled to the center of the frame 1 by bending the outer edges to have different heights. Annularly wound voice coils 5a, 5b attached to the inner surfaces of the diaphragms 4a, 4b attached to the upper and lower surfaces of the frame 1 are disposed to face the two magnets 3a, 3b. A bidirectional speaker having a circular magnet (3a) and a donut-shaped magnet (3b) are attached to the center of the upper surface of the yoke (2) and the bottom of the yoke (2), respectively, and caps above and below the frame (1). 6a and 6b are covered.

Referring to FIG. 2, the bidirectional speaker according to the related art differs in size from a diaphragm 4a disposed above the yoke 2 and a diaphragm 4b disposed below. The diaphragm 4a disposed at an upper portion surrounds the circular magnet 3a and attaches a coil 5a having a diameter that may be disposed above the circular magnet 3a, and the diaphragm 4b disposed at the lower portion of the donut A coil 5b having a diameter that can be arranged at a predetermined interval with the donut-shaped magnet 3b is wrapped around the shaped magnet 3b.

Therefore, since the diameters of the circular magnets 3a and the donut-shaped magnets 3b are different from each other, the diameters of the coils 5a and 5b also vary, and the coils 5a and 5b are attached to the diaphragms 4a and 4b so that they The spaces 7a, 7b, 7c, and 7d that can be moved to each other had to be separately provided.

The bidirectional speaker according to the prior art requires these separate spaces 7a, 7b, 7c, 7d in which the diaphragms 4a, 4b can move in the radial direction, so that the magnets 3a, 3b attached to the yoke 2 ), The diameter of the coil is inevitably reduced, which causes the magnetic flux density to decrease, resulting in a decrease in output. Accordingly, there was a disadvantage in that the incoming sound or the call sound of the voice communication device could not be heard well by the ambient noise.

Further, spaces 7a, 7b, 7c, and 7d in which the diaphragm 4a above the yoke 2 and the diaphragm 4b below the yoke 2 can move up and down are respectively left in the circumferential direction of the yoke 2. Since the magnets (3a, 3b) to be attached to the yoke (2), it is difficult to assemble exactly in the assembly position, the workability is poor, and because the magnets (3a, 3b) attached only with adhesive, the assembly strength is also low there was.

The present invention has been made to solve the above problems, an object of the present invention is to provide a two-way speaker that can output a high output by increasing the magnetic flux density.

Another object of the present invention is to provide a two-way speaker that can increase the assembly strength and mass production rate and reduce the manufacturing cost by improving the assembly of the speaker unit and the receiver unit.

In order to achieve the above object, a first preferred embodiment of the present invention, a frame having a predetermined cylindrical space; A yoke disposed in the cylindrical space of the frame, the yoke having a predetermined cylindrical shape and having an end having a predetermined width on an inner wall and a flange having a predetermined width on an outer circumferential surface thereof; A first magnet attached to the inner space of the yoke and forming a magnetic field; A first diaphragm disposed above the first magnet to reproduce sound by vibration; A first coil attached to a rear surface of the first diaphragm and disposed so as to be on a step of a predetermined width formed in the yoke, and vibrating the first diaphragm by interaction with the first magnet; A second magnet having an outer diameter corresponding to the inner diameter of the frame and attached to a rear surface of the flange of the yoke and forming a magnetic field; A second diaphragm disposed to cover the second magnet and reproducing sound by vibration; And a second coil attached to a rear surface of the second diaphragm and disposed at a position corresponding to the first coil on a rear surface of the yoke, and vibrating the second diaphragm by interaction with the second magnet. Provides a two-way speaker that includes.

A second preferred embodiment of the present invention also includes a frame having a predetermined cylindrical space; A support member disposed in the cylindrical space of the frame, the support member being a double cylinder of different sizes and having an extension portion radially interconnected to the inner wall of the cylinder; A disk-shaped first magnet inserted into an inner cylinder of the support member to form a magnetic field; A first diaphragm disposed above the first magnet to reproduce sound by vibration; A first coil attached to a rear surface of the first diaphragm and disposed on an extension of the support member, the first coil oscillating the first diaphragm by interaction with the first magnet; An outer diameter corresponds to an inner diameter of the frame, and an inner diameter is a ring shape corresponding to the outer diameter of the support member, the second magnet being inserted between the frame and the support member to form another magnetic field; A second diaphragm disposed to cover the second magnet and reproducing sound by vibration; And a second coil attached to a rear surface of the second diaphragm and disposed at a position opposite to the first coil and vibrating the second diaphragm by interaction with the second magnet.

The inner diameter of the first coil and the second coil is preferably the same.

1 is an exploded perspective view of a two-way speaker according to the prior art.

2 is a cross-sectional view of the bidirectional speaker according to FIG. 1;

3 is a cross-sectional view of a two-way speaker according to a first embodiment of the present invention.

4 is a cross-sectional view of a two-way speaker according to a second embodiment of the present invention.

5 is a partial cross-sectional view of a bidirectional speaker according to a preferred embodiment of the present invention.

<Explanation of symbols for main parts of drawing>

10: frame 20: yoke, support member

21: inner wall, inner cylinder 22: outer cylinder

30: 1st magnet 40: 1st diaphragm

50: 1st coil 60: 2nd magnet

70: second diaphragm 80: second coil

Hereinafter, the present invention will be described in more detail with reference to the accompanying drawings. Identical elements refer to like reference numerals.

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

3, the bidirectional speaker according to a preferred embodiment of the present invention, the frame 10 having a predetermined cylindrical space; A yoke (20) disposed in the cylindrical space of the frame (10), having a predetermined cylindrical shape, having an end (22) of a predetermined width on the inner wall (21), and a flange (23) of a predetermined width on an outer circumferential surface; A first magnet 30 attached to the inner space of the yoke 20 and forming a magnetic field; A first diaphragm 40 disposed above the first magnet 30 to reproduce sound by vibration; It is attached to the rear surface of the first diaphragm 40, and disposed so as to be on the end 22 of the predetermined width formed in the yoke 20, by the interaction with the first magnet 30, the first diaphragm A first coil 50 which vibrates 40; A second magnet 60 having an outer diameter corresponding to the inner diameter of the frame 10 and attached to the rear surface of the flange 23 of the yoke 20 to form a magnetic field; A second diaphragm 70 disposed to cover the second magnet 60 to reproduce sound by vibration; And attached to a rear surface of the second diaphragm 70 and disposed on the rear surface of the yoke 20 so as to be positioned at a position corresponding to the first coil 50, by interaction with the second magnet 60. And a second coil 80 for vibrating the second diaphragm 70.

It is preferable that the first coil 50 and the second coil 80 have the same inner diameter.

The yoke 20 is a predetermined cylindrical member in which the inner wall 21 forms the stage 22. The yoke 20 has a predetermined circular space therein, and the inner wall 21 extends vertically to the outside so that the center portion has a predetermined width. And then vertically back to the top. The end of the inner wall 21 again extends radially perpendicular to form a flange 23 of a predetermined width.

The first magnet 30 is a disk shape having a predetermined diameter, and corresponds to the internal space shape of the yoke 20. Therefore, when attached to the yoke 20, it is only necessary to insert the first magnet 30 in the circular space, it is not necessary to adjust the assembly position of the first magnet 30 in a separate device for centering.

The first diaphragm 40 is partially curved in a predetermined circular shape, is disposed to cover the first magnet 30 from above, and reproduces the sound source of the speaker by vibration.

The first coil 50 is attached to the bent portion of the rear surface of the first diaphragm 40 and has a diameter larger than that of the first magnet 30 to surround the first magnet 30. At this time, the lower end 22 of the predetermined width formed by bending the inner wall 21 of the yoke 20 is located below the first coil 50. When the first coil 50 is energized, the first coil 50 vibrates the first diaphragm 40 up and down by the action of the first magnet 30.

The second magnet 60 has a predetermined ring shape that matches the shape of the flange 23 formed on the outer circumferential surface of the yoke 20, is fitted to fit the inner diameter of the frame 10, and is attached to the rear surface of the flange 23. The outer diameter of the second magnet 60 corresponds to the inner diameter of the frame 10, and the inner diameter of the second magnet 60 surrounds the inner circular space of the yoke 20 and allows a margin to be attached to the rear surface of the flange 23. It is desirable to have. Due to this structure, the second magnet 60 can be easily assembled to the frame 10.

The second diaphragm 70 has a diameter different from that of the first diaphragm 40, is partially curved in a predetermined circular shape, is disposed to cover the second magnet 60, and reproduces the sound source of the receiver by vibration. do.

The second coil 80 is attached to the bent portion of the rear surface of the second diaphragm 70, has a diameter smaller than the inner diameter of the ring-shaped second magnet 60, and forms an inner circular space of the second magnet 60. It is arranged in an enclosed form. At this time, the end 22 of the predetermined width formed by bending the inner wall 21 of the yoke 20 comes to the upper portion of the second coil 80. The second coil 80 receives a force by the action of the second magnet 60 when energizing, and vibrates the second diaphragm 70 up and down.

Meanwhile, the diameters of the curved portions of the first diaphragm 40 and the second diaphragm 70 are the same, and the first coil 50 and the second coil 80 having the same diameter are attached to the curved portions. It is desirable to be. With the same diameter, the space for the first coil 50 and the second coil 80 to move up and down is unnecessary in the circumferential direction of the frame 10, so that the diameters of the magnets 30 and 60 can be increased. Therefore, the output can be improved by increasing the magnetic flux density.

4 is a cross-sectional view of a two-way speaker according to a second embodiment of the present invention.

4, the bidirectional speaker according to the second embodiment of the present invention includes a frame 10 having a predetermined cylindrical space; A support member (20) disposed in the cylindrical space of the frame (10) and having dual cylinders (21, 22) of different sizes and having extensions (23) radially interconnected to the inner wall of the cylinder; A disk-shaped first magnet (30) inserted into the inner cylinder (21) of the support member (20) to form a magnetic field; A first diaphragm 40 disposed above the first magnet 30 to reproduce sound by vibration; The first diaphragm 40 is attached to the rear surface of the first diaphragm 40 and disposed on the extension 23 of the support member 20, and the first diaphragm 40 is formed by interaction with the first magnet 30. A first coil 50 which vibrates (); The outer diameter corresponds to the inner diameter of the frame 10, the inner diameter is a ring shape corresponding to the outer diameter of the support member 20, and is inserted between the frame 10 and the support member 20, and another magnetic field A second magnet 60 for forming; A second diaphragm 70 disposed to cover the second magnet 60 to reproduce sound by vibration; And an agent attached to the rear surface of the second diaphragm 70 and disposed at an opposite position to the first coil 50 and oscillating the second diaphragm 70 by interaction with the second magnet 60. Two coils 80.

The inner diameters of the first coil 50 and the second coil 80 are the same, and the first magnet 30 and the second magnet 60 are attached to the plate 90 on both upper and lower sides.

The support member 20 is a double cylindrical structure, the cross section has an H shape. In the space formed by the inner cylinder 21 of the support member 20, a disk-shaped first magnet 30 may be inserted, and the outer cylinder 22 is inserted into an inner diameter of the ring-shaped second magnet 60. Thus, the position of the first magnet 30 and the second magnet 60 can be determined. Extensions 23 radially interconnected from the inner center of the support member 20 divide the space formed between the heights of the first magnet 30 and the second magnet 60.

The first magnet 30 has a disk shape having a predetermined diameter and has a diameter that can be inserted into the inner cylinder 21 of the support member 20. Therefore, when attaching the first magnet 30, it is only necessary to insert the first magnet 30 into the inner cylinder 21, and adjust the assembly position of the first magnet 30 with a separate device for centering. No need to give

The first diaphragm 40 is partially curved in a predetermined circular shape, is disposed to cover the first magnet 30 from above, and reproduces the sound source of the speaker by vibration.

The first coil 50 is attached to the curved portion of the rear surface of the first diaphragm 40, has a diameter larger than the diameter of the first magnet 30, and is disposed in a form surrounding the first magnet 30. At this time, the lower portion of the first coil 50, the extension portion 23 for connecting the double cylinders (21, 22) of the support member 20 is located.

The second magnet 60 has a predetermined ring shape, the outer diameter of the second magnet 60 corresponds to the inner diameter of the frame 10, the inner diameter of the second magnet 60 and the outer diameter of the support member 20 Corresponds. Therefore, the second magnet 60 is inserted to match the inner diameter of the frame 10, and since the support member 20 including the first magnet 30 is inserted into the inner diameter, no additional position adjustment is necessary and the assembly is easy. Do.

The second diaphragm 70 has a diameter different from that of the first diaphragm 40, is partially curved in a predetermined circular shape, and is disposed to cover the second magnet 60, and reproduces the sound source of the receiver by vibration. do.

The second coil 80 is attached to the bent portion of the rear surface of the second diaphragm 70, has a diameter smaller than the inner diameter of the ring-shaped second magnet 60, and forms an inner circular space of the second magnet 60. The second coil 80 faces the extension 23 of the support member 20. The second coil 80 receives a force by the action of the second magnet 60 when energizing, and vibrates the second diaphragm 70 up and down.

In the bidirectional speaker according to the second embodiment of the present invention, the plate 90 is attached to both upper and lower surfaces of the first magnet 30 and the second magnet 60. This structure is for compensating the absence of the yoke and forming a magnetic circuit without requiring a separate space for the yoke.

Meanwhile, the diameters of the curved portions of the first diaphragm 40 and the second diaphragm 70 are the same, and the first coil 50 and the second coil 80 having the same diameter are attached to the curved portions. It is desirable to be.

3 and 5, the principle and operation of a two-way speaker according to an embodiment of the present invention will be described.

In the bidirectional speaker according to the preferred embodiment of the present invention, a speaker is formed at one side of a predetermined cylindrical space of the frame 10 and a receiver is formed at the other side.

Since the disk-shaped first magnet 30 constituting the speaker has a shape that matches the shape of the inner circular space of the yoke 20 or the supporting member 20, the assembly position can be inserted into the circular space to determine the assembly position. It is easy to assemble because it does not require a separate device for centering, is inserted into the inner space of the yoke 20 or the support member 20, the inner wall 21 of the yoke 20 or the support member 20 Since it is supported by, the assembly strength is also excellent.

Since the ring-shaped second magnet 60 has a diameter and a shape corresponding to the inner diameter of the frame 10, the ring-shaped second magnet 60 can be inserted into the frame 10 and assembled. At this time, since a part of the inner wall 21 or the support member 20 of the yoke 20 is inserted into the circular space formed at the center of the second magnet 60, it is also possible without any additional device for centering. Since the position of the two magnets 60 can be determined, the assembly is easy, and the position is fixed by the inserted inner wall 21 or the support member 20 to increase the assembly strength.

The first diaphragm 40 constituting the speaker and the second diaphragm 70 constituting the receiver are disposed on the first and second magnets 30 and 60 assembled as described above.

The first diaphragm 40 and the second diaphragm 70 attach the first coil 50 and the second coil 80, respectively, and the first coil 50 attaches the first magnet 30 to the outside. It is disposed in the form of wrapping, the second coil 80 is disposed in a form surrounding the central space of the second magnet (60). Due to this arrangement, the first coil 50 is placed on the end 22 of the inner wall 21 of the yoke 20 or the extension 23 of the support member 20, and the second coil 80 is It is located below the end 22. At this time, the diameter of the first coil 50 and the diameter of the second coil 80 are preferably the same.

Due to the position of the coils 50 and 80 of the above-described structure, the bidirectional speaker according to the preferred embodiment of the present invention has a space for attaching the magnets 3a and 3b as shown in FIG. 2 and between the inner wall of the yoke 2. In the spaces 7a, 7b, 7c, and 7d in which the respective coils 5a and 5b can move up and down, there is no need to be provided in the circumferential direction of the yoke 2.

Thus, as in the preferred embodiment of the present invention shown in Figures 3 and 5, the first coil 50 and the second coil 80 are mutually with the end 22 of the inner wall 21 of the yoke 20 interposed therebetween. Face to face.

Since the bidirectional speaker according to the preferred embodiment of the present invention does not have a separate space for the movement of the coils 50 and 80 in the circumferential direction of the frame 10 as described above, the internal circular space of the frame 10 The diameter of the first magnet 30 can be increased so as to correspond to the second magnet 60, so that the diameter can be made larger.

As shown in FIG. 5, the bidirectional speaker assembled in such a structure has the N pole and the S pole adjacent to each other so that a magnetic force can flow between the first magnet 30 and the second magnet 60 to flow in one direction. Are arranged. The magnetic field flows in the direction of the arrow in the magnets 30 and 60 arranged as shown, and when a current flows in the first coil 50 or the second coil 80, the coil 50, 80 is forced up and down to vibrate the vibration plates 40 and 70 to reproduce the sound source.

In the bidirectional speaker, since the speaker and the receiver form a separate magnetic field, when the sound source of the speaker is reproduced, a current flows only in the first coil 50 constituting the speaker, and the first diaphragm 40 vibrates. When reproducing the sound source, a current flows only in the second coil 80 constituting the receiver, and the second diaphragm 70 vibrates.

The bidirectional speaker has a coil 50 disposed above the magnets 30 and 60 when the magnetic flux density of each of the magnets 30 and 60 increases by increasing the diameters of the first magnet 30 and the second magnet 60. 80) This strength is greatly increased. Accordingly, the vibration of each of the diaphragms 40 and 70 is also increased, so that the output of the speaker and the receiver is increased.

As described above, the bidirectional speaker according to the preferred embodiment of the present invention does not need to separately provide a space for the coils attached to each diaphragm in the circumferential direction of the frame to vibrate, the diameter of the magnet constituting the speaker and the receiver By increasing the flux density to increase the magnetic flux density can be produced high output.

The bidirectional speaker according to a preferred embodiment of the present invention is also provided with an end on the inner wall of the yoke so that the coils attached to each of the diaphragms up and down with the end between them may vibrate, or each coil may be provided with an extension on the support member. Allow the extension to move up and down with the intervening portion therebetween. Accordingly, the magnet constituting the speaker unit and the magnet constituting the receiver unit can be stably assembled in the remaining space, thereby increasing the assembly strength and mass production rate, thereby reducing the manufacturing cost.

In addition, since the inner diameters of the coils constituting the speaker unit and the receiver unit are the same, the same winding machine can be used when making the coil, thereby reducing the manufacturing cost, and thus the coils have the same diameter in the upper and lower portions of the frame and are located in opposite positions. Since it is laid, it is also possible to reduce the manufacturing cost by not having to individually provide a device for centering the coil.

Although the present invention has been described in detail only with respect to the preferred embodiments described, those skilled in the art will understand that various modifications and changes are possible within the technical spirit of the present invention.

Claims (3)

A frame having a predetermined cylindrical space; A yoke disposed in the cylindrical space of the frame, the yoke having a predetermined cylindrical shape and having an end having a predetermined width on an inner wall and a flange having a predetermined width on an outer circumferential surface thereof; A first magnet attached to the inner space of the yoke and forming a magnetic field; A first diaphragm disposed above the first magnet to reproduce sound by vibration; A first coil attached to a rear surface of the first diaphragm and disposed so as to be on a step of a predetermined width formed in the yoke, and vibrating the first diaphragm by interaction with the first magnet; A second magnet having an outer diameter corresponding to the inner diameter of the frame and attached to a rear surface of the flange of the yoke and forming a magnetic field; A second diaphragm disposed to cover the second magnet and reproducing sound by vibration; And A second coil attached to a rear surface of the second diaphragm and disposed at a position corresponding to the first coil on a rear surface of the yoke, and including a second coil to vibrate the second diaphragm by interaction with the second magnet. Two-way speaker characterized in that. A frame having a predetermined cylindrical space; A support member disposed in the cylindrical space of the frame, the support member being a double cylinder of different sizes and having an extension portion radially interconnected to the inner wall of the cylinder; A disk-shaped first magnet inserted into an inner cylinder of the support member to form a magnetic field; A first diaphragm disposed above the first magnet to reproduce sound by vibration; A first coil attached to a rear surface of the first diaphragm and disposed on an extension of the support member, the first coil oscillating the first diaphragm by interaction with the first magnet; An outer diameter corresponds to an inner diameter of the frame, and an inner diameter is a ring shape corresponding to the outer diameter of the support member, the second magnet being inserted between the frame and the support member to form another magnetic field; A second diaphragm disposed to cover the second magnet and reproducing sound by vibration; And And a second coil attached to a rear surface of the second diaphragm and disposed at a position opposite to the first coil, and vibrating the second diaphragm by interaction with the second magnet. The bidirectional speaker according to claim 2 or 3, wherein an inner diameter of the first coil and the second coil is the same.