KR100828070B1 - A speaker and manufacturing thereof - Google Patents

Abstract

A speaker and a manufacturing method thereof are provided to laminate a metal plate on a film made of a FPCB without adhesive, and to integrate a voice coil and a lead wire on the film for making a vibrating plate without a separate lead wire. A main vibrating plate of a speaker is a double vibrating plate structure with first and second vibrating parts(15,21). A metal pattern of the first vibrating part is formed in a center of the main vibrating plate. A metal pattern of a voice coil joining part(16) is formed in right and left sides of the first vibrating part with an arc shape. The voice coil joining part has positive and negative poles for surrounding the first vibrating part with a predetermined gap for the metal pattern of the first vibrating part, and is joined to a voice coil. The second vibrating part is formed in an outside of the voice coil joining part. In the second vibrating part, a metal plate is corroded and a film is exposed.

Description

Speaker and manufacturing method thereof

1 is a cross-sectional view showing the structure of a conventional speaker.

2 is a plan view and a cross-sectional view of a conventional diaphragm.

3 is a plan view and a sectional view of a diaphragm of a speaker according to the present invention;

Figure 4 is a perspective view showing the shape of the diaphragm of the speaker according to the present invention.

5 is a conceptual diagram showing the electrical transmission pattern of the diaphragm of the speaker according to the present invention.

Figure 6 is an exploded cross-sectional view showing the coupling between the protector, the diaphragm body, the frame of the speaker according to the present invention.

7 is a conceptual diagram showing a procedure of a method of manufacturing a speaker of the present invention.

8 is a part diagram showing a part of a speaker according to the present invention;

9a to 9d are exemplary views showing the voice coil coupling part and the first and second vibration parts of the diaphragm main body of the speaker according to the present invention.

<Description of the symbols for the main parts of the drawings>

110: voice coil 120: upper plate

160: magnet 170: diaphragm

200: voice coil lead wire 11: auxiliary pattern

15: first vibration unit 16: voice coil coupling unit

17: Terminal 18a: + lead wire

18b:-lead wire 19: lead treatment

20: cabaret 21: second vibration part

22: diaphragm body 23: frame

24: metal plate 25: film

27: 4-hole guide 28: auxiliary pattern

29: Protector 30: York

The present invention relates to a diaphragm structure of a speaker.

In general, a speaker consists of a principle of converting electrical energy into mechanical energy by a voice coil between the air gaps, according to Fleming's left-hand law that a current-carrying conductor is energized when it is in a magnetic field.

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 generates vibrations in the diaphragm attached to the voice coil. Ultimately, the human ear generates sound pressure that can be perceived.

The magnetic circuit of such a speaker typically has a magnetic flux connected at right angles to the voice coil existing in the cavity using a magnet and an upper plate in a bottom plate made of ferrous metal. The voice coil is bonded to the diaphragm to generate electromotive force up and down by the input signal, thereby vibrating the diaphragm bound to the frame to generate sound.

Referring to the configuration of a typical speaker with reference to Figure 1, the speaker is a frame 140, the upper portion is a trumpet-shaped shape, the diaphragm is assembled to enable natural shaking up and down through the edge 190 on the frame ( 170), which is fixed to the center portion of the bottom surface of the diaphragm through the guide ring 180, and to adjust the vibration while helping the vibration of the diaphragm between the voice coil 110, the voice coil and the frame is selectively applied current from the outside The damper 130, the upper plate 120 attached to the lower part of the frame, the lower plate 150 positioned below the upper plate at a predetermined interval, and the voice coil in the gap between the upper plate and the lower plate Is installed to accommodate a portion of the magnet 160 is configured to enable the vertical movement of the voice coil by cooperation with the plate .

The speaker configured as described above is a diaphragm as the voice coil 110 moves up and down by the electromagnetic force generated between the magnet 160 having the magnetic circuit as described above and the voice coil 110 between the upper and lower plates 120 and 150. 170 is shaken to generate sound.

Here, the edge serves to help the vibration plate shake well, Figure 2 shows an example of a conventional speaker edge in a plan view and a cross-sectional view.

Conventional speaker has a structure in which the diaphragm 170 is provided with components, respectively, to transfer electricity.

That is, as shown in FIGS. 1 and 2, a lead wire (side line) 200 of a thin voice coil between the voice coil 110 and the terminal terminal (not shown) that drives up / down according to an electrical signal is It is a structure that transfers electricity.

The driving of the micro speaker does not use gold wire to reinforce the disconnection of the lead wire 200 at a large amplitude and high output of the damper that maintains the linear movement of the diaphragm 170.

Accordingly, in order to secure smooth vibration and reliability of the diaphragm 170, the manufacturing method of shaping the voice coil lead wire 200 and reinforcing it with a soft adhesive is used.

Therefore, the non-linear diaphragm 170 is moved by the pressure-sensitive adhesive on the lead wire 200 of the voice coil and the risk of disconnection of the voice coil is exposed.

In addition, in the structure of a conventional speaker equipped with components, it is difficult to improve the electrical performance and the automation process of the lead wire processing unit, thereby reducing the cost, demanding workability, increasing the tech time in the manufacturing process of the side line, increasing the number of people, increasing labor costs, and eliminating high defect rates. I have a problem that is hard to do.

The present invention has been proposed to solve the above problems,

First, it is aimed at excluding the adhesive by coating a metal plate on a film made of a flexible circuit board (FPCB) by a laminating technique, away from the conventional method of adhering the metal plate to the film.

Secondly, the voice coil is patterned on the film to be integrally formed, and the voice coil is formed on the film up to a lead wire connecting the terminal terminal, so that a separate lead wire is unnecessary.

Speaker according to the present invention for achieving the above object is

A speaker comprising a yoke for receiving a magnet and a magnet plate sequentially, a voice coil vibrating by a magnetic force generated in the magnet and the magnet plate, and a diaphragm main body vibrating together by the vibration of the voice coil to reproduce sound.

The diaphragm body is

Coating the liquid film on a metal plate to form a flexible circuit board,

By etching the metal plate of the flexible circuit board into a pre-designed shape by using an etching technique, a circular first vibrating part metal pattern is formed in the center part, and the first vibration part has a certain distance outside the first vibrating part metal pattern. The metal pattern of the voice coil coupling part, which is a part coupled to the voice coil, is formed in an arc shape on the left and right sides of the first vibration part, and the metal plate is corroded on the outside of the voice coil coupling part. The exposed second vibration is formed,

The diaphragm main body has a double vibrating plate structure by the first and second vibrating parts inside and outside the voice coil coupling part of the diaphragm main body.

And the manufacturing method of the speaker according to the present invention

A yoke for accommodating a magnet and a magnet plate sequentially, a voice coil vibrating by the magnetic force generated in the magnet and the magnet plate, and a method of manufacturing a diaphragm body of a speaker that vibrates together to reproduce sound by the vibration of the voice coil To

a) coating a liquid flexible circuit board film on the metal plate;

b) Melting the metal plate in a container designed shape using an etching technique on the film-coated metal plate to form a metal pattern of the circular first vibrating part in the center and the first vibration at a certain distance outside the first vibrating part. The metal pattern of the voice coil coupling part coupled with the voice coil part is formed in an arc shape on the left and right sides of the first vibration part, and the metal plate is melted on the outside of the voice coil coupling part to expose the film. Forming a second vibration part;

c) the diaphragm body is coupled to the first and second vibration parts of the inner and outer parts of the voice coil coupling part by cutting the lead wire of the second vibration part and cutting the shape of the terminal connected thereto to couple the voice coil coupling part and the voice coil together. The double vibrating plate structure is provided as a characteristic configuration.

Hereinafter, the configuration of the present invention will be described with reference to the accompanying drawings.

The speaker according to the present invention basically comprises a diaphragm body 22 and a cabaret 20 in the form of a flexible circuit board made of a film 25, a metal plate (copper foil) 24, as shown in FIGS. 3 and 7. Element.

First, referring to the flexible circuit board, the flexible circuit board may be largely divided into single-sided and double-sided substrates, and more specifically, may be classified according to the layer layer according to the adhesive structure with the metal plate 24.

In the flexible circuit board, the metal plate 24 and the film 25 are usually manufactured by using an adhesive. However, when the flexible circuit board is used as a diaphragm material, the residual adhesive layer is adhered to the molding die when the flexible circuit board is formed. There is a disadvantage that the defect rate increases during molding.

The present invention is implemented as a 2Layer product laminated the film 25, without using an adhesive on the metal plate 24, such as rolled foil or electrolytic foil, in order to secure this disadvantage.

The laminating technique uses a well-known technique for making a beautiful glossiness and extending the life by coating a film on the surface of an ID card or various printed materials, and a detailed description thereof will be omitted.

Here, the film 25 that influences the characteristics of the diaphragm 24 does not have a fixed thickness using fabric of each manufacturer, and the liquid form itself, which is a material of the film 25, is coated on the metal plate 24. Therefore, it is preferable to use various materials having excellent binding strength and having high peel strength and various thicknesses even at high temperature and high humidity conditions.

The flexible circuit board obtained by the laminating technique or other known method of the metal plate 24 and the film 25 as described above is called the diaphragm body 22, the diaphragm body 22 is first to be removed in accordance with the pre-designed pattern A portion other than a pattern is removed from the metal plate 24 by using a so-called etching method in which a solvent is printed on the metal plate 24 to corrode.

When the metal plate 24 is corroded and removed by the etching method as described above, only the film 25 is left in portions other than the pattern, and since the metal pattern is formed except the exposed portion of the film 25, the first vibration part 15 is formed. Alternatively, a desired shape such as the voice coil coupling part 16 is manufactured.

That is, a circular first vibration part pattern 15 is formed in the center of the metal plate 24 so that the film 25 is exposed in the form of a spokes bar, and the first vibration part 15 is formed at a predetermined distance from the outside of the first vibration part 15. One pattern of the voice coil coupling part having +-poles is formed in an arc shape on the left and right sides so as to surround the vibration part 15, and the outer side of the voice coil coupling part 16 has the second film in the state where the film 25 is exposed. Eastern part 21 is formed.

Here, the voice coil coupling part 16 is coupled to the voice coil 4 of the speaker to apply a magnetic force to the diaphragm 2 when referring to the conventional speaker illustrated in FIG. 2.

Here, as shown in Figure 9a, b, c, d, the diaphragm body 22 is made of two or more layers, or the voice coil coupling portion 16 and the first and second vibration parts (15, 21) on both sides When formed, the first vibrating part 15 is formed to be connected to the voice coil coupling part 16 by winding a plurality of times a metal pattern having a predetermined thickness from the center to the outside while maintaining a distance from each other, The wound metal pattern may serve to play a role of the first vibration unit 15, an auxiliary role of the voice coil coupling unit 16, and a role of reinforcing the diaphragm body 22.

As illustrated in FIG. 3, the diaphragm main body 22 in which the first and second vibration parts 15 and 21 and the voice coil coupling part 16 are formed by etching the metal plate 24 as described above is additionally formed around the voice coil coupling part ( 16, further metal patterning the terminal 17 and the +,-lead wires (18a, b) interconnecting the voice coil coupling portion 16 and the terminal 17 to enable input of an electrical signal, and etching method May corrode.

Of course, the terminal 17 and the + and-lead wires 18a and b may be etched together with the first and second vibration parts 15 and 21 and the voice coil coupling part 16 of the diaphragm body 22. .

In more detail, the -pole of the terminal 17 is preferentially connected in a straight line with the right voice coil coupling portion (-pole) through the -lead wire 18b, and the -lead wire 18b is additionally connected to the second It is wrapped in an arc along the lower edge of the eastern portion 21, and is directed between the left and right voice coil coupling portions 16 and the voice coil coupling portions 165 in the direction of the center of the circle at the center point of the -lead line 18b of the lower edge. A metal pattern is formed in a straight line to extend.

The + pole of the terminal 17 surrounds the upper edge of the second vibration part along the circumference through the + lead line 18a and is connected to the left voice coil coupling part (+ pole), and the center point of the lower-lead wire of the left and right voice coil coupling parts. The pattern is formed to extend in a straight line toward the separation portion between the left and right voice coil coupling portion 16 and the voice coil coupling portion 16 in the center direction of the circle.

Thus, by etching it again, the diaphragm body 22 has the functions of the + and-lead wires 18a and b and the terminal 17 integrally.

Accordingly, unlike the substrate in which each component is formed as in the related art, the diaphragm body 22 is manufactured with various functions and diaphragm shapes such as electric transfer by the lead wire, first and second vibration parts, and body reinforcement.

The diaphragm body 22 of the present invention is preferably formed in a circular shape except for the lead wire and the terminal 17, but may be formed in an elliptical shape as shown in FIGS. 9C and 9D.

In the case of oval, the voice coil coupling part can be easily changed by those skilled in the art as the + and-poles are arranged on the left and right or up and down, but the voice coil coupling part 16 supplies power from the terminal 17 through the lead wire. The basic purpose of supply is the same.

The diaphragm body 22 as described above is thermoformed at a constant temperature (eg, polyimide 250-310 ° C.) and pressure (eg, 5-10 PSI).

This is when the voice coil coupling portion 16 of the diaphragm body 22 is coupled with the voice coil of the speaker, the diaphragm is formed to be bent upwards, to facilitate this operation.

6 to 8, the outer periphery of the diaphragm body 22 manufactured as described above, and the edge of the lead wire and the terminal 17 are cabarets 20 to prevent corrosion of the diaphragm, the terminal 17 and the lead wire. Can be covered.

Then, a lead treatment process is performed on the voice coil coupling portion 16, the diaphragm terminal, and the terminal 17 terminal portion of the diaphragm body 22. The diaphragm body 22 is made by bonding soldering and welding the voice coil 110 of the speaker to the composite diaphragm prepared as described above. When the magnetic circuit is combined with the frame 23 into which the magnetic circuit is inserted, and finally, the protector 29 for protecting the vibration unit is combined, the manufacture of the basic micro speaker is finished.

Referring to the speaker manufacturing method of the present invention according to the above configuration as follows.

First, the liquid flexible circuit board film 25 is coated on a metal unit 24 unit by laminating.

 Next, the metal plate 24 is corroded to an existing designed shape by using an etching method of printing a solvent on a laminating coated metal plate 24 in a pre-designed shape, and a film having a wheel shape in the center of the metal plate 24. A pattern of the circular first vibrating part 15 having the exposed portion 25 is formed, and the positive and negative polarities are lateral to the left and right so as to surround the first vibrating part 15 at a predetermined distance from the first vibrating part 15. A pattern of the voice coil coupling part 16 having a shape is formed, and a pattern of the second vibration part 21 in which the metal plate 24 is melted and the film 25 is exposed as it is outside of the pattern of the voice coil coupling part 16. Is formed.

Next, the pattern of the first vibrating part and the voice coil coupling part 16 formed on the metal plate 24 is etched or corroded to form the first vibrating part 15 and the voice coil coupling part 16 to form the diaphragm body 22. To complete).

Here, at least one auxiliary pattern 28 may be further formed in the second vibrator 21 to reinforce.

Next, the outer periphery of the second vibrator 21 and the shape of the lead wire and the terminal 17 are fixed by using the four-hole guide 27 as shown in FIG.

Next, the outer periphery of the diaphragm body 22, the edge of the lead wire and the terminal 17 is covered with a cover 20 to prevent corrosion of the diaphragm, terminal 17 and lead wire.

Next, the lead wires of the diaphragm body 22 and the terminals of the terminal 17 are subjected to a lead treatment for electrical energization.

Next, when the diaphragm body 22 is combined with the frame 23 into which the magnetic circuit is inserted, and finally, the protector 29 for protecting the vibration unit is combined, the manufacture of the basic micro speaker is completed.

Where the metal plate 24 and the film 25 of the diaphragm body 22 is bonded by an adhesive rather than a laminating technique, the step of further attaching the mesh to the surface to prevent the flexible circuit board is adhered by the adhesive It may further include.

In addition, a plurality of auxiliary metal patterns 28 may be formed on the second vibrating portion of the diaphragm body 22 to enjoy the reinforcing effect of the diaphragm body 22.

According to the present invention by the above configuration,

First, the present invention forms a flexible circuit board by coating a liquid film with a conventional substrate on a metal plate, and by etching the metal plate of the flexible circuit board in a pre-designed shape by using an etching technique, the first circular circular The metal part of the vibration part is formed, and has a + and-poles to surround the first vibration part at a distance from the outside of the first vibration part metal pattern, and the metal pattern of the voice coil coupling part, which is a part coupled to the voice coil, Each of the first vibration part is formed in an arc shape, and a second vibration part in which a film is exposed by corrosion of a metal plate is formed outside the voice coil coupling part.

As in the prior art, there is an advantage of solving the problem that the residual adhesive layer is bonded to the molding die when forming the diaphragm material, thereby causing a defective rate during molding.

Second, the double vibration structure is provided by the first and second vibration parts inside and outside the voice coil coupling part of the diaphragm main body to provide more wideband and high output sound quality, and to increase reliability by linear movement at high power output. It works.

Third, since the first vibration portion inside and outside the voice coil coupling portion of the diaphragm body also serves to reinforce the strength of the diaphragm body, it is possible to enhance durability of the device and to produce high output more efficiently.

Fourth, the diaphragm main body by additionally forming a terminal and a lead wire connecting the voice coil coupling part and the terminal to the outer peripheral portion of the diaphragm main body to enable input of an electrical signal to the voice coil coupling part and etching or corrode it again. By having the functions of the lead wires and the terminal integrally, it is possible to provide a reliable diaphragm by preventing failure such as disconnection of the lead wire at high output.

Fifth, when the diaphragm body is made of two or more layers, or if the voice coil and the diaphragm are formed on both sides, the first vibrating part is wound in a state in which a metal pattern having a predetermined thickness maintains a distance from the center to the outside It is formed to be connected to the servo coil coupling portion, it is effective to perform the role of the first vibration portion, the auxiliary role of the voice coil coupling portion and the role of reinforcing the diaphragm body by the wound metal wire.

Sixth, the outer periphery of the diaphragm body, the edge of the lead wire and the terminal is covered with a cabaret has the effect of preventing corrosion of the diaphragm, terminal and lead wire.

Claims (16)

A speaker comprising a yoke for receiving a magnet and a magnet plate sequentially, a voice coil vibrating by a magnetic force generated in the magnet and the magnet plate, and a diaphragm main body vibrating together by the vibration of the voice coil to reproduce sound. The diaphragm body is The first vibration part metal pattern is formed in the center part, and has a + and-poles to surround the first vibration part at a distance from the outside of the first vibration part metal pattern, and the voice coil coupling, which is combined with the voice coil. A negative metal pattern is formed in an arc shape on the left and right sides of the first vibration part, and a second vibration part in which a film is exposed by corrosion of a metal plate is formed outside the voice coil coupling part. And a vibrating plate main body having a double vibrating plate structure by the first and second vibrating parts inside and outside the voice coil coupling part of the diaphragm main body. The method of claim 1, On the outer circumference of the diaphragm body The terminal which enables input of an electrical signal to the voice coil coupling part and the + and-lead wires connecting the terminal and the voice coil coupling part of the + and-poles are further corroded by etching, thereby metal patterning. The + lead wire and the-lead wire are respectively connected from the terminal, and are connected to the voice coil coupling portions of the + and-poles along the outer periphery of the upper and lower sides of the second vibration part, respectively.  The diaphragm main body is a speaker characterized in that it has a function of the lead wire and the terminal integrally. The method according to claim 1 or 2, The first vibrating portion of the diaphragm body is made of a circular or spokes shape to the speaker characterized in that to perform a role of reinforcing the body. The method of claim 3, When the diaphragm main body is formed of two or more layers, or when the voice coil coupling part and the diaphragm are formed on both sides, the first vibrating part has a predetermined thickness, but a plurality of layers in the state of maintaining a distance from each other from the center to the outside. A speaker comprising a metal pattern wound and connected to a voice coil so as to perform a role of the first vibration unit, an auxiliary role of the voice coil, and a role of reinforcing the diaphragm body by the metal pattern. The method of claim 4, wherein The second vibrating portion of the diaphragm body, characterized in that a plurality of auxiliary metal pattern is further formed for reinforcement. The method of claim 5, The outer periphery of the diaphragm body, the edge of the lead wire and the terminal is a speaker, characterized in that the cover is covered to prevent corrosion of the diaphragm, terminal and lead wire. The method of claim 6, When the metal plate and the film of the diaphragm body is bonded with an adhesive, the speaker further comprises a mesh on the surface to prevent the flexible circuit board is adhered by the adhesive. A yoke for accommodating a magnet and a magnet plate sequentially, a voice coil vibrating by the magnetic force generated in the magnet and the magnet plate, and a method of manufacturing a diaphragm body of a speaker that vibrates together to reproduce sound by the vibration of the voice coil To a) coating a liquid flexible circuit board film on the metal plate; b) Corroding the metal plate to a pre-designed shape using an etching technique on the film-coated metal plate, thereby forming a metal pattern of the circular first vibrating part in the center, and the first vibration at a certain distance outside the first vibrating part. The metal pattern of the voice coil coupling part coupled to the voice coil part is formed in an arc shape on the left and right sides of the first vibration part, and the outer side of the voice coil coupling part is corroded by a solvent to form a metal plate. Forming the exposed second vibration part; c) the diaphragm body is coupled to the first and second vibration parts of the inner and outer parts of the voice coil coupling part by cutting the lead wire of the second vibration part and cutting the shape of the terminal connected thereto to couple the voice coil coupling part and the voice coil together. The method of manufacturing a speaker characterized by having a double vibration plate structure. The method of claim 8, On the outer circumference of the diaphragm body Metal patterning the terminal and the + and-lead wires connecting the terminal and the voice coil coupling part of the + and-poles to enable input of an electrical signal to the voice coil coupling part by using an etching method; And connecting the + and-lead wires from the terminals so that the + lead wires and the-lead wires are respectively connected to the voice coil coupling parts of the + and-poles along the outer periphery of the upper and lower sides of the second vibration part. . The method according to claim 8 or 9, The first vibrating part of the diaphragm body further comprises the step of facilitating the forming of the diaphragm in which the metal plate is corroded by the etching technique to expose the film in the shape of the spokes. The method of claim 10, If the diaphragm body is made of two or more layers, or if the voice coil coupling portion and the diaphragm are formed on both sides, The first vibrating part of the diaphragm main body has a predetermined thickness, and wound in a state in which the distance from each other to maintain the distance from the center to the outer side made of a metal pattern connected to the voice coil coupling part of the manufacture of a speaker Way. The method of claim 11, And forming a plurality of auxiliary metal patterns for reinforcement in the second vibration part of the diaphragm body. The method of claim 12, The outer periphery of the diaphragm body, the edge of the lead wires and the terminal cover the cover to cover the diaphragm, the terminal and the lead wire to prevent corrosion. The method of claim 13, When the metal plate and the film of the diaphragm body is bonded by an adhesive rather than a laminating technique, further comprising a step of attaching a mesh to the surface to prevent the flexible circuit board is adhered by the adhesive of the speaker Manufacturing method. The method of claim 14, The method of manufacturing a speaker, characterized in that made for the purpose of bonding further comprising the step of conducting a lead treatment for electrical conduction when the lead portion of the diaphragm body and the voice coil of the speaker is coupled. The method of claim 15, The diaphragm main body is a method of manufacturing a speaker, characterized in that further comprising the step of thermoforming at a predetermined temperature and pressure in order to be bent to the upper side and the lower side in the cross-section.

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