KR102518442B1 - Broadband high-resolution electromagnetic speaker - Google Patents

Abstract

The present invention relates to a broadband high resolution electromagnetic speaker, comprising: an upper coil; a lower coil disposed to face the lower portion of the upper coil; a diaphragm disposed between the coils; It includes one or more permanent magnets disposed outside the coils, and the vacuum plate is provided as a high-pitched diaphragm having a plurality of oscillation blades in the center and a wide-band diaphragm in which a low-pitched diaphragm covering the oscillation blades is integrated with the high-pitched diaphragm. The high-pitched range can be expanded by the diaphragm, and the low-pitched range can be expanded by the low-pitched diaphragm, which is very suitable for realizing high-resolution and high-quality sound as well as band expansion from the low-pitched to high-pitched range by a single speaker. can be usefully used.

Description

Broadband high resolution electromagnetic speaker {BROADBAND HIGH-RESOLUTION ELECTROMAGNETIC SPEAKER}

The present invention relates to a wide-band high-resolution electromagnetic speaker, and more particularly, by providing a high-pitched diaphragm and a single wide-band diaphragm in which a low-pitched diaphragm is integrated at the center of the high-pitched diaphragm, the high-pitched and low-pitched diaphragms are expanded, and a single speaker It relates to a wideband high-resolution electromagnetic speaker that enables acoustic multi-way implementation by

In general, electro-magnetic speakers have the same principle as coin-type speakers in which alternating magnetic force lines generated from a coil around which a wire is wound and direct current magnetic field lines induced from a permanent magnet interact to generate force, but the coil is directly Unlike the driven coin-type, the coil is fixed and the iron piece attached to one end of the coil is electromagnetized and vibrates to perform electro-acoustic conversion.

Electronic-type speakers include a balanced armature speaker and a plate-type speaker. Among these electronic-type speakers, the plate-type speaker is related to the following Patent Document 1 (Korean Patent Registration No. 1596894). is presented in

In the electronic-type speaker of Patent Document 1, upper coils and lower coils are disposed correspondingly, one or more permanent magnets are disposed outside the upper and lower coils, and a diaphragm is disposed between the upper and lower coils, and the upper and lower surfaces of the diaphragm and When the edge is provided with a configuration in which the upper and lower damping members support.

A process of driving the diaphragm in the conventional electronic-type speaker configured as described above will be described. First, on the premise that the upper surface of the permanent magnet is the S pole and the lower surface is the N pole, when the current flow is in a positive (+) cycle, the direction of the internal magnetic field of the upper coil and the direction of the internal magnetic field of the lower coil are opposite to each other toward the inside. As a result, since the diaphragm becomes N-polarized, the diaphragm moves upward.

When the current flow is 0, the diaphragm is neutralized and the diaphragm itself is located in the center by balancing the upper and lower magnetic fields of the upper and lower permanent magnets and the restoring force of the diaphragm itself.

When the current flow is in a negative (-) cycle, the internal magnetic field direction of the upper coil and the internal magnetic field direction of the lower coil are made to face each other outward, and the diaphragm becomes S-polarized, so the diaphragm moves downward.

In the electronic-type speaker as described above, the diaphragm is electromagnetized by the electromagnetic force of the upper and lower coils and driven directly in response to the magnetic force of the permanent magnet in a state in which the weight of the coil is excluded, thereby realizing rapid response in response to electrical signals. Through this, very delicate and detailed sound reproduction is possible.

In addition, since the diaphragm actively drives itself and converts sound, the distortion rate of the conversion path of the vibrating unit can be minimized, which is advantageous for reproducing a clearer sound.

However, in the existing electronic-type speaker as described above, it is provided with a single diaphragm integrated in a plate shape such as a circle or an ellipse, and is limited in the expansion of the treble and bass range. Due to the strong elasticity, which is a characteristic of the amorphous alloy material, it is difficult to mold and manufacture, thereby increasing the manufacturing cost.

In particular, most of the existing electronic-type speakers have good resolution, but most of them show limited performance in expanding bass and super-high tones, so treble, mid-range, and bass-only are separately provided, and they are combined and placed into a system, or a single speaker for high-pitched sound Since the diaphragm and the diaphragm dedicated to the low-pitched sound region are separately provided, the structure of the speaker is complicated and expensive, and therefore, a single speaker capable of implementing acoustic multi-way with one diaphragm is urgently required.

KR 10-1596894 B1 (2016.02.17. Registration)

The present invention has been researched and developed to overcome various disadvantages of conventional speakers as described above, and by providing a high-pitched diaphragm and a wide-band diaphragm in which a low-pitched diaphragm is integrated in the center of the high-pitched diaphragm, the high-pitched diaphragm can be expanded by the high-pitched diaphragm. It is possible to expand the low-pitched tone range by means of the low-pitched diaphragm, thereby providing a broadband high-resolution electromagnetic speaker that allows for broadband expansion from the low-pitched to high-pitched tone range, and enables fine adjustment and high resolution.

In addition, the present invention is provided as a wide-band diaphragm in which a high-pitched diaphragm and a low-pitched diaphragm are integrated, so that acoustic multi-way implementation by a single speaker is possible and radiated energy of high and low sounds is coaxialized to minimize phase interference and distortion. It is to provide a wideband high resolution electromagnetic speaker.

In addition, the present invention provides an integral electrode member and double-sided adhesive pad made of a flexible printed circuit board (FPCB), so that at least upper and lower coils or upper and lower permanent magnets can be assembled using double-sided adhesive pads on the flexible printed circuit board, Therefore, the purpose is to provide a wideband high-resolution electromagnetic speaker that can minimize and simplify the main assembly process to about 10 processes and is very suitable for automation of the assembly line.

A wideband high resolution electromagnetic speaker according to the present invention for achieving the above object includes an upper coil; a lower coil disposed to face the lower portion of the upper coil; a diaphragm disposed between the coils; It includes one or more permanent magnets disposed outside the coils,

The diaphragm is provided as an open high-pitched diaphragm having a hole in the center and a wide-band diaphragm in which a dome-shaped low-pitched diaphragm covering the hole of the high-pitched diaphragm is integrated.

In the broadband high-resolution electromagnetic speaker of the present invention, the hole of the treble diaphragm is characterized in that it is provided as an open-winged treble diaphragm having a plurality of vibrating blades radially formed on its inner circumferential surface.

In the wideband high-resolution electromagnetic speaker of the present invention, an adjustment through hole may be formed in the oscillation blades, and the adjustment through hole is selectively formed in a part of the oscillation blades.

The high-pitched diaphragm and the low-pitched diaphragm are coaxially coupled to form a concentric shape.

In the wideband high-resolution electromagnetic speaker of the present invention, the high-pitched diaphragm is made of a ferromagnetic material such as iron, nickel, or silicon, and the low-pitched diaphragm is made of a diamagnetic or non-magnetic material such as aluminum, magnesium, or polymer.

In the broadband high-resolution electromagnetic speaker of the present invention, the upper and lower coils are of the same size and are arranged symmetrically up and down, and the permanent magnets are upper and lower permanent magnets of the same size on the outside of the upper and lower coils. It is symmetrically arranged, and the broadband diaphragm is characterized in that it is installed to be supported by upper and lower permanent magnets through a damper unit.

The damper unit includes an upper damper supporting the upper surface of the outer periphery of the treble diaphragm, a lower damper supporting the lower surface of the outer periphery of the treble diaphragm, and a pair of upper and lower housings for fixing the upper and lower dampers together with the treble diaphragm. It is characterized in that provided.

In the broadband high-resolution electromagnetic speaker of the present invention, the upper coil and the lower coil are wired so that their respective lines of magnetic force run opposite to each other.

In the broadband high-resolution electromagnetic speaker of the present invention, the upper coil, the lower coil, the upper permanent magnet, the lower permanent magnet and the diaphragm are concentrically installed in a housing, and a first sound spinner is formed in the upper center of the housing, The upper permanent magnet and the lower permanent magnet are characterized in that they have the same magnetization direction.

In the wideband high resolution electromagnetic speaker of the present invention, the upper and lower coils are connected so that parallel connection is made between (+) and (-) terminals of the upper and lower coils through an integrated electrode member made of a flexible printed circuit board (FPCB) characterized by

The integrated electrode member includes an upper electrode member covering the upper surface of the upper coil, a lower electrode member covering the lower surface of the lower coil, a connecting track connecting the upper and lower electrode members to each other, and a lower electrode member so as to form a straight line with the connecting track. An external electrode terminal member extending from is integrally provided, and two electrode terminals are provided on one side of the upper and lower electrode members, respectively, and two electrode terminals are provided at the end of the external electrode terminal member, but each of the upper and lower coils It is characterized in that a pair of electrode patterns are formed to individually connect lead wires to form a circuit.

The integrated electrode member is attached to the upper electrode member with a double-sided adhesive pad so that the upper coil and the upper permanent magnet are concentric, and attached to the lower electrode member with a double-sided adhesive pad so that the lower coil and the lower permanent magnet are concentric, and then the upper coil A diaphragm is interposed between the upper and lower coils, and both ends of the connection track are bent to form a D-shaped shape so that the diaphragm as well as the upper and lower coils are concentric, and then inserted into the housing to assemble.

In the broadband high-resolution electromagnetic speaker of the present invention, the housing is made of a cap-shaped member, a first sound emission hole is formed in the center of the upper surface, a coil wire molding hole is formed on one side, and an electrode extraction hole is formed on the other side. Characterized in that an electrode withdrawal incision groove is formed.

The wide-band high-resolution electromagnetic speaker of the present invention provides a wide-band diaphragm in which a high-pitched diaphragm with a hole formed in the center and a low-pitched diaphragm covering the hole are integrated with the high-pitched diaphragm, so that the high-pitched diaphragm can be expanded by the high-pitched diaphragm, and the low-pitched diaphragm It is possible to expand the low-pitched tone range by the line, which has the advantage of being suitable for realizing high-resolution high-quality sound as well as widening the range from the low-pitched tone range to the high-pitched tone range.

In addition, the present invention is provided as a wide-band diaphragm in which a high-pitched diaphragm and a low-pitched diaphragm are integrated, so that acoustic multi-way implementation by a single speaker is possible and radiated energy of high and low sounds is coaxialized, thereby minimizing phase interference and distortion. there is

In addition, the present invention can remove unnecessary bass by adjusting the spacing of an open diaphragm in which at least one hole is drilled in the center of the treble diaphragm or an open diaphragm having a plurality of vibration blades having a minimum mass that arcs radially in the hole. At the same time, it has a very advantageous advantage in expanding and fine-tuning the high-pitched range.

In addition, the present invention assembles at least the upper and lower coils or the upper and lower permanent magnets by using double-sided adhesive pads on an integrated electrode member made of a flexible printed circuit board (FPCB), and as a result, about 10 assembly main processes It has the advantage of being very suitable for automating the assembly line while minimizing and simplifying the process.

In addition, according to the present invention, after assembling the coil guide track of the integral electrode member so that the ends of the upper and lower coils are drawn out, they can be collectively bent to one side using a roller or the like, thereby automating the assembly line as well as improving productivity. It has the advantage of being very suitable for seeking.

1 is a cross-sectional view showing a wideband high resolution electromagnetic speaker according to a preferred embodiment of the present invention.
Figure 2 is a plan view of Figure 1;
Figure 3 is a bottom view of Figure 1;
FIG. 4 is an enlarged view of a part of FIG. 1 .
5 is an exploded perspective view of the wideband high resolution electromagnetic speaker of the present invention.
6 is a plan view and a longitudinal sectional view showing a housing applied to the broadband high resolution electromagnetic speaker of the present invention.
7 is a perspective view and a plan view illustrating a coil and a permanent magnet extracted according to the present invention.
8 is a plan view and a cross-sectional view showing a broadband diaphragm extracted from the wideband high resolution electromagnetic speaker according to the present invention.
9 is a plan view and a bottom view showing an integral electrode member extracted from the broadband high resolution electromagnetic speaker according to the present invention.
10 and 11 are plan views showing high-pitched diaphragms of another embodiment in the wideband high resolution electromagnetic speaker according to the present invention.
12 to 19 are diagrams for explaining a process of assembling a wideband high resolution electromagnetic speaker according to the present invention.
20 is a graph showing a comparison between frequency response characteristics of a wideband high resolution electromagnetic speaker according to the present invention and a frequency response characteristic of a conventional speaker.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. For reference, the size of components, the thickness of lines, etc. shown in the drawings referred to in describing the present invention may be somewhat exaggerated for convenience of understanding. In addition, the terms used in the description of the present invention are only defined in consideration of the functions in the present invention, and may vary according to the user, operator's intention, custom, and the like. Therefore, it is appropriate that the definition of the term be made based on the contents throughout the present specification.

1 to 9 are diagrams for explaining a wideband high resolution electromagnetic speaker according to a preferred embodiment of the present invention.

As shown in the drawing, the broadband high resolution electromagnetic speaker according to the present invention includes a housing 10 having a cap-shaped cross section, an upper coil 20 mounted in an upper space inside the housing 10, and the upper coil 20 ) It is configured to include a lower coil 30 disposed opposite to the lower part, a broadband diaphragm 40 disposed between the coils, and upper and lower permanent magnets 50 and 60 disposed outside the coils. do. The upper and lower coils 20 and 30 form a circuit with the integrated electrode member 70 and are connected to receive current.

Since the housing 10 must have an installation space therein for the upper and lower coils 20 and 30, the diaphragm 40, the upper and lower permanent magnets 50 and 60, and the integral electrode member 70, the overall shape is It is made of a cap-shaped cross section and is preferably made of a non-magnetic material such as aluminum. The housing 10 has a sound outlet 11 formed in the center of the upper surface, a coil wire molding hole 12 formed on one side thereof, and a connection track 73 of the integrated electrode member 70 on the other side. An electrode withdrawal incision groove 13 is formed for withdrawing the electrode to prevent damage by being exposed.

On one side of the upper coil 20, lead lines 21 such as + pole lead lines and - pole lead lines are drawn, and the lead lines 21 of the upper coil 20 are the upper surface electrodes of the integrated electrode member 70. It is connected to the first electrode terminal 71a formed on the member 71. The upper coil 20 is assembled inside the upper permanent magnet 50 and installed in the upper space of the housing 10 .

The lower coil 30 is opposed to the lower part of the upper coil 20 and is disposed spaced apart by the thickness of the damper unit 90, but installed to be located inside the lower permanent magnet 60 in the lower space of the housing 10 do.

On one side of the lower coil 30, lead lines 31 such as + pole lead lines and - pole lead lines are drawn, and the lead lines 31 of the lower coil 30 are the bottom electrodes of the integrated electrode member 70. It is connected to the second electrode terminal 72a formed on the member 72.

As mentioned above, the upper permanent magnet 50 is disposed outside the upper coil 20, and the lower permanent magnet 60 is disposed outside the lower coil 30, but they are all provided in a washer type.

In addition, the upper coil 20 and the lower coil 30 are wired so that their respective lines of magnetic force flow opposite to each other, and through this, the electromagnetized broadband diaphragm 40 is formed from the two upper and lower coils 20 and 30. get the driving force The broadband diaphragm 40 vibrates up and down in response to electrical positive (+) cycles and negative (-) cycle signals applied to the upper and lower coils 20 and 30 .

The broadband diaphragm 40 is spaced apart from each other through a damper unit 90 between the upper coil 20 and the lower coil 30 which are arranged vertically and symmetrically, thereby forming a vibration module. The broadband diaphragm 40 assembled as a vibration module is disposed between the upper and lower permanent magnets 50 and 60 and is assembled concentrically with the upper and lower coils 20 and 30. As mentioned above, the vibration module means that the outer periphery of the broadband diaphragm 40 is assembled to be supported by the damper unit 90. When the broadband diaphragm 40 is modularized in this way, assembling work can be automated, manual work affecting the unit cost of production can be minimized.

The damper unit 90 includes a ring-shaped upper damper 91 supporting the outer circumferential upper surface of the treble diaphragm 40a, a ring-shaped lower damper 92 supporting the outer circumferential lower surface of the treble diaphragm 40a, It is provided with a pair of upper and lower housings 93 and 94 made of angle cross-section type rings to surround the upper and lower dampers 91 and 92 and fix them together with the treble diaphragm 40a.

The upper and lower dampers 91 and 92 are preferably made of a non-magnetic material capable of controlling the modulus of elasticity so as to effectively damp the treble diaphragm 40a. For example, polymer, silicone, urethane, synthetic resin, etc. there is

The upper and lower housings 93 and 94 are made of a magnetic material to minimize leakage of magnetic force between the upper and lower permanent magnets 50 and 60 and at the same time to secure a sufficient separation space so as to prevent the upper and lower dampers 93 and 94 from leaking. The pressure can be properly controlled, and through this, the braking force and restoring force of appropriate compliance are provided to the high-pitched diaphragm 40a to prevent sound loss due to antiphase when vibrating with the low-pitched diaphragm 40b in the low-pitched range, thereby lowering the lower band. can implement the reproduction of

The broadband diaphragm 40 is provided as a wing-open type high-pitched diaphragm 40a having a plurality of vibrating blades 44 formed radially around a central hole 43, and the hole 43 and vibration of the high-pitched diaphragm 40a The dome-shaped bass diaphragm 40b covering the wing 44 is provided in an integrated state.

In addition, the high-pitched diaphragm 40a has a body 41, which serves as a main function of vibration, and an edge portion 42 provided on the outside of the body 41, at the center of the body 41 A closed-type hole 43 is bored, and a plurality of vibrating blades 44 are radially formed around the hole 43 to provide an open-wing type diaphragm. The high-pitched diaphragm 40a is made of a ferromagnetic material such as iron, nickel, or silicon, and the low-pitched diaphragm 40b is made of a diamagnetic or non-magnetic material such as aluminum, magnesium, or a polymer.

The broadband diaphragm 40 is installed through the damper unit 90 between the upper and lower permanent magnets 50 and 60 having the same size, and is alternately linked with the electric signal flowing through the upper and lower coils 20 and 30 As it is magnetized with an electromagnetic field, it becomes an active vibrator that drives itself, enabling ultra-high resolution realization of a high frequency band ranging from high to ultra-high.

In particular, the broadband diaphragm 40 is vibrating blades 44 based on the same circumference, which is the inner diameter of the upper and lower coils 20 and 30, in a state where its outer periphery is supported by the upper and lower permanent magnets 50 and 60. ) vibrates while making an up-and-down arc motion.

If this is explained in more detail, the upper and lower coils 20, 30) is electromagnetized by the electromagnetic force and directly reacts with the magnetic force of the upper and lower permanent magnets 50 and 60 to drive itself. Due to this, since it has a very rapid response in response to an electrical signal, very delicate and more detailed sound reproduction is possible.

When the broadband diaphragm 40 is driven at a low frequency, the high-pitched diaphragm 40a and the low-pitched diaphragm 40b are simultaneously coaxially supported by the upper and lower dampers 91 and 92 of the damper unit 90. As a result, loss of sound due to antiphase is prevented, and at the same time, low-pitched sound is mainly generated by the low-pitched diaphragm 40b, so that a lower band can be reproduced.

Unlike this, when the wideband diaphragm 40 is driven at a high frequency, the body 41 of the high-pitched diaphragm 40a and the low-pitched diaphragm 40b are supported by the upper and lower dampers 91 and 92 of the damper unit 90 Even if it is, it cannot vibrate in correspondence with the high frequency, but it is supported by a cantilever based on the root part of the vibrating blade 44, which is the side of the edge 42 close to the outer periphery of the body 41. It is freely driven from the inside in an arc shape.

In this way, when the vibration blades 44 of the high-pitched diaphragm 40a are freely driven in an arc shape, the low sound generated by the vibration blade 44 itself is dissipated in antiphase because of the upward and downward arc motion, and only high notes are generated. will be released That is, when driven at a high frequency, the low-pitched diaphragm is almost stationary and a physically separated two-way state in which only the high-pitched diaphragm 40a operates separately is implemented, but the driving of the low-pitched diaphragm 40b and the high-pitched diaphragm 40a are linked in one body As a result, it implements a very natural final overall characteristic from bass to treble.

The high-pitched diaphragm 40a is illustrated as having vibration wings radially formed in the central hole 43, but it may be provided with only various closed-type holes such as circular, elliptical, and square. As the size and area of the hole 43 of the high-pitched diaphragm 40a are changed, the low-pitched sound extinction area also changes. If the size and area of the hole 43 is small, the low sound extinction area is low, and as the size and area of the hole 43 increases, the low sound extinction area gradually expands to the high sound area.

In the high-pitched diaphragm 40a, the size and area of the hole 43 can be designed and changed in various ways because the low-pitched sound extinction area and the high-pitched sound area are varied correspondingly according to the size and area of the hole 43. There is a very advantageous advantage in fine adjustment as well as expansion and diversification of the treble range.

The upper and lower coils 20 and 30 are connected in parallel with each other so that the + poles of the upper and lower coils 20 and 30 are connected in parallel through the integrated electrode member 70 made of a flexible printed circuit board (FPCB), and the - poles are - connect the poles

In the integrated electrode member 70, the upper electrode member 71 and the lower electrode member 72 are connected through a connection track 73, and an external electrode terminal member 74 is connected to one side of the lower electrode member 72. It extends to form a straight line with the track 73.

The upper and lower electrode members 71 and 72 are formed in the same size as the planar shape of the upper and lower coils 20 and 30, and two electrode members are provided on one side of the upper and lower electrode members 71 and 72, respectively. First and second electrode terminals 71a and 72a are provided, and two third electrode terminals 74a are provided at the end of the external electrode terminal member 74 . The first and second electrode terminals 71a and 72a of the integrated electrode member 70 are individually connected to the lead wires of the upper and lower coils 20 and 30 to form a circuit with the third electrode terminal 74a. A pair of electrode patterns 75a, 75b and 75c are formed.

A first member through hole 71b is formed in the center of the upper surface electrode member 71, and a U-shaped coil guide track 71c is formed on one side of the first member through hole 71b to draw out the lead wires of the upper coil 20. ) is formed in a combined shape, and two first electrode terminals 71a are provided around the coil guide track 71c to fix the lead wire 21 of the upper coil 20 by soldering.

A second member through hole 72b is formed in the center of the lower electrode member 72, and a U-shaped coil induction through which lead wires 31 of the lower coil 30 are pulled out is formed on one side of the second member through hole 72b. The track 72c is formed in a combined shape, and two second electrode terminals 72a are provided around the coil induction track 72c to fix the lead wire 31 of the lower coil 30 by soldering. .

In addition, since the electrode patterns 75a and 75b formed on both sides of the upper and lower electrode members 71 and 72 to form a + pole and - pole circuit must be electrically connected, the lower electrode pattern 75c is connected to the upper surface. Connection through holes 76a and 76b for electrical connection to the electrode pattern 75b may be provided.

It is preferable that an insulating sheet for insulation from other components is covered on the surface of the integrated electrode member 70 except for each electrode terminal portion.

The double-sided adhesive pads 80 are two thin pads provided to improve assembly workability between the upper and lower coils 20 and 30 and the integrated electrode member 70. This double-sided adhesive pad 80 is formed in a flat shape when the upper coil 20 and the upper permanent magnet 50 are combined or the lower coil 30 and the lower permanent magnet 60 are combined, but the upper and lower coils 30 and the lower permanent magnet 60 are combined in the center. A through hole 81 having the same size as the inner diameter of the lower coils 20 and 30 is drilled, and an arc shape is obtained on one outer periphery so that the lead wires 21 and 31 of the upper and lower coils 20 and 30 are not obstructed from being pulled out. A coil take-out portion 82 is formed. The double-sided adhesive pad 80 may be any material as long as its upper and lower surfaces have adhesive strength, and release paper is preferably provided on the upper and lower surfaces having adhesive strength.

The assembly process of the wideband high resolution electromagnetic speaker according to the present invention constructed as described above will be described.

First, the upper damper 91 is seated in the upper housing 93, the broadband diaphragm 40 is seated and set thereon, and then the lower damper 92 is placed and the lower housing 94 is covered and assembled to obtain a vibration module. .

At the same time, by arranging the upper and lower permanent magnets 20 and 30 on the work table and inserting one upper and lower coil 20 and 30 inside the upper and lower permanent magnets 50 and 60, respectively, the upper and lower permanent magnets 20 and 30 are inserted. get the lower magnetic circuit At this time, the lead wires 21 and 31 of the upper and lower coils 20 and 30 are drawn upward and protrude.

As above, one double-sided adhesive pad 80 is attached to the upper permanent magnet 50 of the upper magnetic circuit and another double-sided adhesive pad 80 is attached to the lower permanent magnet 60 of the lower magnetic circuit. At this time, the lead wires 21 and 31 of the upper and lower coils 20 and 30 are positioned within the coil lead-out portion 82 outside the double-sided adhesive pad 80, so that plastic deformation does not occur.

After that, the integral electrode member 70 is placed on the upper surface of the double-sided adhesive pad 80 on the upper and lower coils 20 and 30 and attached, but the upper electrode member 71 is positioned on the upper coil 20 and the lower coil (30) Attached so that the bottom electrode member 72 is positioned on top. At this time, the upper and lower parts of the upper and lower electrode members 71 and 72 are attached so that the upper and second member through-holes 71b and 72b coincide with the inner diameters of the upper and lower coils 20 and 30 constituting the magnetic circuit, and at the same time, the upper and lower parts The lead wires 21 and 31 of the coils 20 and 30 must be led out through the coil guide tracks 71c and 72c of the upper and lower electrode members 71 and 72.

As described above, the upper coil 20 and the upper permanent magnet 50 as an upper magnetic circuit are attached to the integrated electrode member 70 using the double-sided adhesive pad 80, as well as the lower coil 30 and the lower permanent magnet ( The reason for attaching 60) is that parts can be unitized, and due to the unitization of these parts, the work of assembling the vibration module in the housing 10 is more easily performed, so that work efficiency and productivity can be improved. .

As described above, after attaching the integrated electrode member 70 on the upper and lower coils 20 and 30, the upper and lower surfaces and The upper and lower coils 20 and 30 are moved while gently pressing in the direction of the first and second electrode terminals 71a and 72a provided on one side of the coil induction tracks 71c and 72c of the lower electrode members 71 and 72. The lead wires 21 and 31 are bent in a horizontal state in contact with the first and second electrode terminals 71a and 72a on one side of the coil guide tracks 71c and 72c.

After that, the ends of the lead wires 21 and 31 of the upper and lower coils 20 and 30 are located within the first and second electrode terminals 71a and 72a without leaving the first and second electrode terminals 71a and 72a. Cut to fit and then solder.

Then, after setting the sound outlet 11 of the housing 10 on the work table to be positioned downward, the upper electrode member 71 of the integrated electrode member 70 is seated in the housing 10, but the housing 10 The first electrode terminal 71a of the upper surface electrode member 71 is seated in the coil wire molding tool 12 of the body, and at the same time, the connection track 73 of the integral electrode member 70 is placed on the electrode withdrawal incision of the housing 10. It is inserted to be positioned in the groove 13 and temporarily assembled.

Thereafter, the broadband diaphragm 40 assembled as a vibration module is placed on the upper coil 20 and the upper permanent magnet 50 so that the upper coil 20 and the hole 43 in the center of the broadband diaphragm 40 are concentric. After disposing, the lower coil 30 and the lower permanent magnet 60 are temporarily assembled on the broadband diaphragm 40 while bending both ends of the connecting track 73 of the integrated electrode member 70 by 90 degrees, respectively. At this time, the upper coil 20 and the upper permanent magnet 50, which are the upper magnetic circuit, the lower coil 30 and the lower permanent magnet 60, which are the lower magnetic circuit, as well as the broadband diaphragm 40 of the vibration module interposed therebetween It should be arranged so that the center is concentric.

Thereafter, the housing 10 is seated and set in a press, and the lower end of the housing 10 is bent inward by 90° to form the upper and lower magnetic circuits along with the vibration module in the housing 10. As a result, a wideband high resolution electromagnetic speaker of a finished product is obtained, and if necessary, the lead wire 21 of the upper coil 20 may be molded by filling the coil wire molding sphere 12 of the housing 10 with epoxy resin or the like.

10 is a diagram showing other embodiments of the high-pitched diaphragm applied to the wideband high resolution electromagnetic speaker of the present invention. Here, it is provided as a wing-open type diaphragm in which a plurality of oscillation blades 44 are formed by radially cutting from the hole 43 of the high-pitched diaphragm 40a. (45) is perforated. Although the adjustment through hole 45 is shown as being provided for each vibrating blade, it may be selectively formed only for some of the vibrating blades.

If the open-bladed diaphragm of another embodiment is applied to the broadband high-resolution electromagnetic speaker of the present invention as described above, the area of the hole 43 is increased due to the gap between the oscillation blades 44, so that the low-pitched sound extinction region can be raised to the high-pitched sound region. I have no choice but to Due to this, the diameter of the hole 43 in the center of the body 41 as well as the distance between the vibrating blades 44 and the adjustment through hole 45 can be appropriately combined and adjusted according to the frequency of the treble range to be obtained.

In other words, as the diameter of the hole 43 and the distance between the oscillation blades 44 are reduced, the low-pitched sound extinction area is lowered, and as the diameter of the hole 43 and the distance between the oscillation blades 44 are increased, the bass sound disappears. As the range gradually rises and moves to the high-pitched range, only higher-pitched sounds can be obtained.

11 is a graph showing frequency response characteristics of a wideband high-resolution electromagnetic speaker according to the present invention and a frequency response characteristic of a conventional speaker.

The frequency reproducing characteristics of the wideband high-resolution speaker according to the present invention realize wideband characteristics that cannot be compared with conventional electronic-type speakers.

While the characteristics of a conventional electronic speaker as a single speaker range from about 200Hz to 10KHz, the low-pitched diaphragm driven in conjunction with the compliance of the damper part supporting the end of the diaphragm reproduces bass with a much lower frequency than that, and reproduces low frequencies by itself. The open-type or wing-type high-pitched diaphragm that cancels out and reproduces high frequencies only has a very low mass and arc motion, so it reproduces the high-pitched range very expanded to the ultra-high frequency range in detail at high speed. As a result, the comprehensive characteristics of the wideband diaphragm in which the two diaphragms are unified provide the advantage of realizing ultra-wideband reproduction that reproduces the audible range limit frequency of 20KHz or higher from a frequency of 100Hz or less even though it is a single speaker, but the treble limit of the low-pitched diaphragm Since the frequency and the bass limit frequency of the treble diaphragm are fused and naturally linked in one body, loss and distortion due to non-coaxial are minimized, thereby reproducing high-quality sound with excellent separation while being very clear, physically and acoustically clearly separated. While reproducing the frequency of each region, it provides an additional effect in which the characteristics of the crossover region where the bass and treble intersect are smoothly performed.

Although the above has been described with reference to specific embodiments of the present invention, the present invention is not limited by the embodiments disclosed in this specification and the accompanying drawings, and may be variously modified by those skilled in the art within the scope of not departing from the technical spirit of the present invention. In addition, as long as the driving principle and the arrangement of parts are consistent with the equivalent concept of the present invention, all of the design change elements will be included in the present invention.

10: housing 11: sound outlet
12: coil wire molding hole 13: electrode withdrawal incision groove
20: upper coil 21, 31: lead wire
30: lower coil 40: broadband diaphragm
40a: high-pitched diaphragm 40b: low-pitched diaphragm
41: body 42: edge
43: hall 44: vibration wing
45: adjustment through hole 50: upper permanent magnet
60: lower permanent magnet 70: integrated electrode member
71: upper electrode member 72: lower electrode member
73: connection track 74: external electrode terminal member
80: double-sided adhesive pad 90: damper unit
91: upper damper 92: lower damper
93: upper housing 94: lower housing

Claims (8)

upper coil; a lower coil disposed to face the lower portion of the upper coil; a diaphragm disposed between the coils; It includes one or more permanent magnets disposed outside the coils,
The diaphragm is provided as an open high-pitched diaphragm with a hole in the center and a wide-band diaphragm in which a dome-shaped low-pitched diaphragm covering the outside of the hole or opening of the high-pitched diaphragm is integrated,
The high-pitched diaphragm is a wideband high-resolution electromagnetic speaker, characterized in that it is provided as an open-winged diaphragm formed with a plurality of oscillation blades radially cut from the inner circumferential surface of the hole. According to claim 1,
The high-pitched diaphragm is made of a magnetic material, and the low-pitched diaphragm is made of a non-magnetic or anti-magnetic material. delete According to claim 2,
A wideband high-resolution electromagnetic speaker, characterized in that an adjustment through hole is formed in the vibrating blade of the treble diaphragm. According to claim 1,
The broadband diaphragm is supported and installed by upper and lower permanent magnets through a damper unit,
The damper unit includes an upper damper supporting the upper surface of the outer periphery of the treble diaphragm, a lower damper supporting the lower surface of the outer periphery of the treble diaphragm, and a pair of upper and lower housings for fixing the upper and lower dampers together with the treble diaphragm. A wideband high resolution electromagnetic speaker characterized in that provided. According to claim 1,
The upper and lower coils are a flexible printed circuit board capable of covering the lower surface of the lower coil through one side of the upper and lower coils from the upper surface of the upper coil so that parallel connection between each (+) terminal and (-) terminal ( A wideband high resolution electromagnetic speaker characterized in that an integral electrode member made of FPCB) is provided. According to claim 6,
The integrated electrode member includes an upper electrode member covering the upper surface of the upper coil, a lower electrode member covering the lower surface of the lower coil, a connecting track connecting the upper and lower electrode members to each other, and a lower electrode member so as to form a straight line with the connecting track. A broadband high resolution electromagnetic speaker, characterized in that the external electrode terminal member extending from is provided integrally. According to claim 7,
The upper coil and the upper permanent magnet are attached to the upper electrode member with double-sided adhesive pads, and the lower coil and lower permanent magnet are attached to the lower electrode member with double-sided adhesive pads.

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