KR101834304B1 - High performance ultra slim type speaker structure and therof manufacturing method - Google Patents

Abstract

The present invention relates to a slim speaker, comprising: an upper frame which has a ring-shaped housing and a dust cap placed in a center of the housing; a lower frame which is coupled to the upper frame; a vibrating plate module which is ring-shaped and mounted on a lower part of the upper frame; a bobbin which is placed in an inner side of the vibrating plate module while an upper side thereof is fixed to the lower part of the upper frame, and is wound around a voice coil; a suspension plate which is embedded in the upper frame to elastically support a vertical vibration of the vibrating plate module or the bobbin, and is conductive; a yoke which is fixed in an inner side of the lower frame; and a magnet which is mounted on the yoke. The suspension plate comprises an outer circumferential unit which is interposed in the housing of the upper frame, and a connection unit which is extended from the outer circumferential unit towards a central shaft, and is interposed in the dust cap. The suspension plate connects the housing to the dust cap, and is integrally formed with the upper frame. The present invention relates to a high-performance ultra-slim speaker structure which has a suspension and a frame are integrally provided, places a vibrating plate in a lower part of the suspension, and has a guide mechanism for simplifying assembly, and a manufacturing method of a speaker. The present invention is able to easily connect a voice coil and a suspension plate.

Description

TECHNICAL FIELD [0001] The present invention relates to a high performance ultra slim speaker structure and a method of manufacturing a speaker,

The present invention relates to a slim type speaker, and more particularly, to a high performance ultrathin speaker structure and a speaker manufacturing method in which a suspension and a frame are integrally formed, a diaphragm is disposed under the suspension, and a guide mechanism is provided to simplify assembly .

Due to the recent rapid development of display devices, various flat panel display devices such as LCD TVs, plasma TVs, and LED TVs have become popular, so that the parts used in such display devices are also required to be miniaturized and slim.

In particular, a speaker uses an electric signal input from an electric signal source such as an amplifier to convert the motion of the voice coil to the vibration of the diaphragm when a current flows through the voice coil in a magnetic field utilizing the built-in magnet, And is one of the components which are difficult to be miniaturized and slim as described above.

Such a conventional slim type speaker is shown in FIG. 1. Hereinafter, a conventional speaker will be described in detail with reference to the drawings.

As shown in Fig. 1, a conventional speaker is provided with a vibration unit 30 for generating a magnetic force on the underside of the base frame 10, and a vibrating unit 30 for generating an electric force. The magnetic circuit 20 includes a plate 21 coupled to a lower surface of the base frame 10, a magnet 23, and a yoke 25. The vibration unit 30 includes a diaphragm 31 coupled to the upper end of the base frame 10 and a bobbin 33 having a voice coil wound around the outer circumference thereof and an upper end coupled to the diaphragm 31, And a damper 35 coupled to the base frame 10 on the outer circumferential surface side and coupled to the bobbin 33 on the inner circumferential surface side.

At this time, the damper 35 serves to guide the vibration direction of the bobbin 33 constantly so that the bobbin 33 can be vibrated in the vertical direction but not in the horizontal direction. When the external power is supplied to the voice coil 33, the bobbin 33 is vibrated up and down by the action of the voice coil and the magnetic circuit 20 wound around the bobbin 33, Sound is generated while vibrating.

However, in the conventional slim type speaker, the inner circumferential surface of the damper 35 is formed at a position below the diaphragm 31 so that the vibration plate 31 and the damper 35 are not interfered with when the bobbin 33 vibrates up and down. And at this time, the diaphragm 31 is formed so as to extend upwardly in an outward direction. In order to realize the slimness of the product, there is a problem in that there is a structural limitation in reducing the height of the entire product.

Alternatively, the vibration plate may be positioned substantially under the damper, and the bobbin and the voice coil may be coupled to each other. In this case, the electrical connection between the voice coil and the damper There is a problem that the diaphragm may be damaged due to the necessity of connecting the terminal wire through a hole in a part of the diaphragm.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and an object of the present invention is to provide an ultrasonic speaker in which a diaphragm is positioned below a suspension while a diaphragm is connected to a suspension without damaging the diaphragm, Structure and a manufacturing method thereof.

In order to solve the above-mentioned problems, an ultrathin speaker structure according to the present invention includes an upper frame having an annular housing and a dust cap positioned at the center of the annular housing, a lower frame coupled to the upper frame, A voice coil is wound on the bobbin and the upper frame is embedded in the diaphragm module or the bobbin to elastically support the vibration of the diaphragm module or the bobbin, The suspension plate may include an outer circumferential portion interposed in the housing of the upper frame, and an outer circumferential portion extending from the outer circumferential portion toward the center axis to form the dust cap. The suspension plate may include a suspension plate, a yoke fixed to the inner side of the lower frame, And the suspension plate includes a lower portion Connecting the gong and dust shield the other hand, it may be formed of the upper frame and the body.

Preferably, a connection portion for exposing a part of the suspension plate is formed on a lower side surface of the upper frame so that the lead wire of the voice coil can be connected to the suspension plate through the connection portion, Can be soldered to the suspension plate.

The diaphragm module may be fixed to the upper frame in a state where the diaphragm module is seated on the diaphragm seating portion. The diaphragm module may be mounted on the outer periphery of the diaphragm seating portion Lt; / RTI >

The bobbin may be fixed to the upper frame in a state where the bobbin is seated on the bobbin receiving portion. The upper end of the bobbin is inserted into the bobbin receiving portion in the inner periphery of the bobbin receiving portion, .

When the upper frame is injection-molded, the suspension plate is inserted into the housing, and the upper part of the upper part is injection-molded so that the central axis of the dust cap positioned at the center of the housing coincides with the central axis of the suspension plate. Frame forming step; Attaching a diaphragm module having an annular shape to an outer surface of a diaphragm guide formed on a lower side of the upper frame; And a bobbin attaching step of positioning the bobbin on which the voice coil is wound inside the diaphragm module and fixing the bobbin on the inner side of the bobbin guide portion formed on the lower side of the upper frame, The ultrasonic speaker can be assembled by coupling the lower frame integrally formed with the yoke to the upper frame and coupling the outer periphery of the diaphragm module between the upper and lower frames.

In the bobbin attaching step of the above-described manufacturing method, a through hole is formed at the lower side of the upper frame so as to expose a part of the suspension plate, and a voice coil mounted on the outer circumference of the bobbin is connected to the suspension plate .

The apparatus according to the present invention as described above can be attached to the upper frame so that the diaphragm module is positioned below the suspension plate, thereby reducing the overall height of the speaker structure. The suspension plate and the upper frame are formed as integral parts, It is possible to simplify the speaker assembly process by reducing the number of speaker assemblies and also to easily connect the voice coil and the suspension plate through the connection portion formed at the lower side of the upper frame.

1 is a schematic diagram showing a conventional speaker structure.
FIG. 2 is a schematic view showing a structure of an ultrathin speaker according to the present invention.
3 is an exploded view of an ultrathin speaker structure according to the present invention.
4 is a cross-sectional view of an ultrathin speaker structure according to the present invention.
5 is a partially exploded view of an upper frame of an ultrathin speaker structure according to the present invention.
FIG. 6 is a partially exploded view of an assembled view of an upper frame, a diaphragm module, and a bobbin of an ultrathin speaker structure according to the present invention viewed from below.
7 is a bottom view of the upper frame.

BRIEF DESCRIPTION OF THE DRAWINGS The advantages and features of the present invention, and how to accomplish them, will become apparent by reference to the embodiments described in detail below with reference to the accompanying drawings. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.

The present embodiments are provided so that the disclosure of the present invention is thoroughly disclosed and that those skilled in the art will fully understand the scope of the present invention. And the present invention is only defined by the scope of the claims. Thus, in some embodiments, well known components, well known operations, and well-known techniques are not specifically described to avoid an undesirable interpretation of the present invention.

Like reference numerals refer to like elements throughout the specification. And the terms (referred to) used herein are for the purpose of illustrating embodiments and are not intended to limit the invention. In the present specification, the singular form includes plural forms unless otherwise specified in the specification. Also, components and acts referred to as " comprising (or comprising) " do not exclude the presence or addition of one or more other components and operations.

Unless defined otherwise, all terms (including technical and scientific terms) used herein may be used in a sense commonly understood by one of ordinary skill in the art to which this invention belongs. Also, commonly used predefined terms are not ideally or excessively interpreted unless they are defined.

Hereinafter, technical features of the present invention will be described in detail with reference to the accompanying drawings.

2 to 4, the ultrasonic speaker 1000 according to the present invention includes an upper frame 100, a lower frame 500, a diaphragm module 200, a bobbin 300, a suspension plate 130, A magnet 510, and a magnet 400.

In the ultrathin speaker 1000 according to the present invention, the upper frame 100 and the lower frame 500 are coupled to each other and include the components therein. A diaphragm module 200 is mounted on the lower side of the upper frame 100 and a bobbin 300 on which the voice coil 310 is wound is placed inside the diaphragm module 200 and fixed to the upper frame 100. At this time, a suspension plate 130 is built in the upper frame 100 to elastically support the vibration of the diaphragm module 200 or the bobbin 300. A yoke 510 is fixed to an inner center of the lower frame 500 and a magnet 400 is seated on the yoke 510. When the current is applied to the voice coil 310, the ultrasonic speaker 1000 according to the present invention vibrates the bobbin 300 up and down by a magnetic field generated between the magnet 400 and the yoke 510, The diaphragm 210 fixed to the upper frame 100 together with the bobbin 300 vibrates up and down to output sound. At this time, the operation principle of each component is substantially the same as that of a normal speaker, and a detailed description thereof will be omitted.

Specifically, the upper frame 100 and the lower frame 500 are cases in which the structure of the ultrathin loudspeaker 1000 is installed. In accordance with the design of an external device (not shown) in which the ultrathin loudspeaker 1000 is installed, It can be manufactured as a circular case as shown in FIGS. The frames 100 and 500 may be joined together by bonding bonding.

As shown in the drawing, the upper frame 100 forms the upper end of the speaker unit and covers parts mounted on the inside of the speaker unit. The housing 110 and the dust cap 120 .

The housing 110 is coupled to the upper side of the lower frame 500, and is formed in an annular plate having a central portion penetrating therethrough.

2 and 3, the dust cap 120 is connected to the housing 110 by being connected to a suspension plate 130, which will be described later, As shown in FIG. The dust cap 120 may be formed in a circular plate shape.

The lower frame 500 forms a lower end of the speaker unit, and has a top-opened shape, and a predetermined size of installation space is provided therein. As shown in FIG. 3, a plurality of air holes 501 through which air is communicated may be formed around the installation space of the lower frame 500, and a yoke 510 is mounted in the installation space.

The diaphragm module 200 is positioned below the upper frame 100. The inner periphery of the diaphragm module 200 is fixed to the center of the upper frame 100 and the outer periphery of the diaphragm module 200 is fixed to the upper frame 100 100 and the lower frame 500. The diaphragm module 200 may include a diaphragm 210 and an edge 220.

The diaphragm 210 forms the inner side of the diaphragm module 200 and is positioned below the dust cap 120 as shown in Figures 3 and 4 and has an inner periphery on the lower surface of the dust cap 120 . The diaphragm 210 is formed to be inclined downward toward the outside. An edge 220 is positioned on the outer periphery of the vibration plate 210.

As shown in FIG. 4, the edge 220 elastically supports the diaphragm 210. The diaphragm 210 has convex portions 221 formed at the outer ends thereof so as to smoothly oscillate the diaphragm 210 in the vertical direction May be provided. The outer edge of the edge 220 is interposed and fixed between the upper frame 100 and the lower frame 500.

The bobbin 300 is coupled to the lower side of the upper frame 100, as shown in Figs. A voice coil 310 is wound around the lower end of the bobbin 300. The bobbin 300 is coupled to the upper frame 100 by being positioned inside the diaphragm module 200. The upper end of the bobbin 300 is fixed to the lower surface of the dust cap 120 to be coupled to the upper frame 100.

A suspension plate 130 is provided on the upper frame 100 to elastically support the vertical vibration of the bobbin 300 and the diaphragm module 200. The suspension plate 130 is mounted on the upper frame 100, .

3 and 4, the suspension plate 130 is formed in a shape in which an outer circumferential surface is interposed in the housing 110 of the upper frame 100 and an inner shape is interposed in the dust cap 120, It is a built-in suspension member, also called a damper. Here, the suspension plate 130 can be manufactured in such a manner that the housing 110 and the dust cap 120 are composed of two upper and lower members, inserted between the upper and lower members, and the respective members are stacked and bonded by bonding, In the present invention, the suspension 110 is housed in the housing 110 and the dust cap 120, each of which is formed of one member. This can be manufactured in such a manner that the suspension plate 130 is injected while being inserted into the housing 110 and the dust cap 120 when the housing 110 and the dust cap 120 are injection molded .

5, the suspension plate 130 may be formed in the shape of an annular plate. The suspension plate 130 may be formed of a metallic material capable of being energized while having elasticity. The housing 110, The cap 120 is connected and the dust cap 120 is elastically supported. At this time, the suspension plate 130 elastically supports the diaphragm module 200 and the bobbin 300 installed on the lower surface of the dust cap 120 as described later. The suspension plate 130 includes an annular outer circumferential portion 131 and a plurality of connecting portions 132 extending from the outer circumferential portion 131 toward the center portion and connected to the dust cap 120, ).

The outer circumferential portion 131 serves to support the connection portion 132 while the suspension plate 130 is fixed to the upper frame 100. The outer circumferential portion has a plurality of current connecting pieces 133 for receiving a current from the outside . At this time, the suspension plate 130 may be formed of two members that are divided to be symmetrical to each other, so that the outer circumferential portion 131 is divided into two portions as shown in FIG.

The connecting portion 132 connects the dust cap 120 and the housing 110 and resiliently supports the dust cap 120 so as to substantially prevent the diaphragm module 200 or the bobbin 120 fixed to the dust cap 120, (300). The connection portion 132 extends from the inner periphery of the outer peripheral portion 131 toward the center. 5, the connection part 132 may be formed to protrude in the center direction at a substantially constant interval from the inner peripheral edge of the outer peripheral part 131. The outer peripheral part 131, And then bent toward the center of the outer circumferential portion 131. The distal end portion 132a is formed at the distal end of the outer circumferential portion 131, When the end portions of the distal end portions 132a of the connection portions 132 facing each other are connected by a virtual extension line, the extension lines are positioned so as to form a cross shape. This shape can be more easily understood with reference to Fig. 7 together with Fig.

The suspension plate 130 is mounted on the housing 110 and the dust cap 120 as the distal end portion 132a of the connection portion 132 is interposed in the dust cap 120 with the outer circumferential portion 131 interposed therebetween. The upper frame 100 may be used as one damper member when assembled. [0051] As shown in FIG.

The suspension plate 130 is a conductive elastic metal piece and is electrically connected to the voice coil 310 wound on the bobbin 300. The upper frame 100 may be provided with a connection part 121 for exposing a part of the suspension plate 130 to the outside so that the suspension plate 130 and the voice coil 310 can be connected to each other.

The connection part 121 is formed on the lower side of the upper frame 100, specifically, below the dust cap 120. 6, the connecting portion 121 is preferably formed at a position corresponding to the tip portion 132a of the connecting portion 132 of the suspension plate 130, and may be a circular hole or a square hole as shown . The voice coil 310 can be connected to the distal end portion 132a of the suspension plate 130 while the bobbin 300 is fixed to the upper frame 100. [ The outgoing lines 311 extending from the voice coil 310 may be connected to at least two portions of the connection portion 132, that is, to the front ends 132a located on both sides of the drawing by soldering, The coil 310 is connected to the suspension plate 130. The shape of the connecting portion 121 may be further described with reference to FIG.

A yoke 510 is fixed to the inner center of the lower frame 500, as shown in Figs. 3 and 4. A magnet 400 may be mounted on the yoke 510 and a plate 410 may be mounted on the yoke 510 in order. These yokes 510 and 510 may be sequentially mounted on the yoke 510. Since these are well known and widely used, detailed description thereof will be omitted.

Meanwhile, the yoke 510 can be manufactured integrally with the lower frame 500. In the present invention, the lower frame 500 and the yoke 510 are formed together by injection molding to form an integral part.

Here, the upper frame 100 may further include a vibration plate seating part 122 for guiding the vibration plate module 200 to be positioned. 4 and 6, the diaphragm seating part 122 is formed on the lower side of the dust cap 120 to which the diaphragm module 200 is attached, The diaphragm 210 of the diaphragm module 200 may be positioned around the diaphragm mount 122 when the diaphragm module 200 is assembled. In this case, It is the role of guidance. This shape can be referred to further in Fig. 7, the diaphragm 210 of the diaphragm module 200 may be positioned on the outer periphery of the diaphragm seating portion 122, but the diaphragm 210 of the diaphragm module 200 may be positioned on the outer periphery of the diaphragm seating portion 122, And it is located outside the periphery of the diaphragm seating portion 122 due to the shape of the diaphragm 210 formed in an annular shape in the embodiment of the present invention.

Accordingly, when the diaphragm is coupled to the upper frame, a separate jig is required to align the center of the upper frame with the center of the diaphragm and to fix the center of the diaphragm. However, the ultrathin loudspeaker 1000 of the present invention includes the diaphragm seat 122 The diaphragm module 200 guides the diaphragm module 200 to be naturally positioned around the lower portion of the upper frame 100, that is, the diaphragm seating portion 122 formed in a protruded boss- So that it is possible to easily align the center of gravity and simplify the assembling process. In other words, when assembling, the diaphragm module 200 is disposed and bonded (bonded) in a state where the lower side of the upper frame 100 is positioned upward. At this time, the inner periphery of the diaphragm 210 is protruded, The center of the diaphragm module 200 and the top frame 100 can be matched so that the center of the diaphragm module 200 and the diaphragm module 200 are automatically aligned while being guided by the seating part 122. In addition, Even if it does, it will have a similar effect.

4, the inner peripheral edge of the diaphragm 210 is located outside the periphery of the diaphragm seating portion 122, so that the inner peripheral edge of the diaphragm 210 having the predetermined inclination Since the diaphragm module 200 is coupled to the upper frame 100 with the diaphragm module 200 abutting the outer surface of the diaphragm seating portion 122 and the lower surface of the dust cap 120, The area of contact with the upper frame 100 other than the adhesive portion of the diaphragm module 200 attached to the upper frame 100 can be widened by an adhesive method such as bonding, ) Can be supported more stably.

On the other hand, the upper frame 100 may further include a bobbin receiving portion 123 for guiding the bobbin 300 to be positioned. 4 and 6, the bobbin seating part 123 is formed on the lower side of the dust cap 120 to which the bobbin 300 is attached, But it is shown that the embodiment of the present invention is formed into a protruded annular boss shape. The bobbin seating portion 123 formed in this manner serves to guide the bobbin 300 to be positioned around the bobbin seating portion 123 at the time of assembly. The shape of the bobbin receiving portion 123 may be further described with reference to FIG.

The ultrasonic speaker 1000 according to the present invention includes the bobbin seating portion 123 so that when the bobbin 300 is positioned below the upper frame 100 during assembly, So that it can be inserted inward along the periphery of the seating portion 123. Therefore, unlike a conventional diaphragm, when a bobbin is coupled to an upper frame, a separate jig is required to fix and fix the bobbin to the upper frame. .

4, the bobbin 300 is inserted and coupled to the inside of the bobbin receiving portion 123, so that the bobbin 300 attached to the bobbin receiving portion 123 is attached to the bobbin receiving portion 123, The mounting area of the bobbin 300 can be widened, so that the bobbin 300 can be stably supported.

The suspension plate 130 is insert injection-molded into an integral part of the upper frame 100, so that the suspension plate 130 is assembled to the suspension frame 130 The coupling step of coupling to the upper frame 100 can be reduced, so that the time required for the assembly process can be reduced.

In addition, since the diaphragm module 200 is positioned below the suspension plate 130 and the diaphragm module 200 is formed so as to be upward in the outward direction, Thereby reducing the overall height.

Since the connection part 121 is provided on the lower side of the dust cap 120 in the upper frame 100, even if the diaphragm module 200 is positioned below the suspension plate 130, The suspension plate 130 and the voice coil 310 can be easily electrically connected to each other without piercing the hole of the suspension plate 130. The position of the connection portion 121 is located at a position corresponding to the front end portion 132a of the suspension plate 130 The process of connecting the lead wire 311 of the voice coil 310 to the distal end portion 132a by soldering can be performed more easily.

In addition, since the diaphragm module 200 and the bobbin 300 are provided with guide portions for guiding the diaphragm module 200 and the bobbin 300, the assembly process can be performed without a separate jig as described above, As shown in Fig.

In addition, since the lower frame 500 and the yoke 510 are formed as an integral part, the process of assembling the yoke 510 to the lower frame 500 is reduced in one step, And the production cost is also reduced.

In addition, since the present invention uses integral parts, the number of parts of the speaker as a whole can be reduced, thereby simplifying the speaker assembly process.

The foregoing description is merely illustrative of the technical idea of the present invention and various changes and modifications may be made without departing from the essential characteristics of the present invention by those skilled in the art. Therefore, the embodiments disclosed in the present invention are for illustrative purposes only and are not intended to limit the scope of the present invention, and the scope of the present invention is not limited by these embodiments.

Therefore, the scope of the present invention should be construed as being covered by the following claims rather than being limited by the above embodiments, and all technical ideas within the scope of the claims should be construed as being included in the scope of the present invention.

100: upper frame 110: housing
120: dust cap 121: connection
122: diaphragm guide part 123: bobbin guide part
130: Suspension plate 131:
132: connection part 200: diaphragm module
210: diaphragm 220: edge
300: Bobbin 310: Voice coil
400: Magnet 410: Plate
500: lower frame 510: yoke

Claims (9)

An upper frame having an annular housing and a dust cap located at the center of the housing;
A lower frame coupled with the upper frame;
An annular diaphragm module mounted on a lower side of the dust cap of the upper frame;
A bobbin which is positioned on the inner side of the diaphragm module and whose upper side is fixed to a lower side of the dust cap of the upper frame, the voice coil being wound;
A suspension plate built in the upper frame and elastically supporting up and down vibrations of the diaphragm module or the bobbin,
A yoke fixed to the inside of the lower frame; And
And a magnet mounted on the yoke,
Wherein the suspension plate includes an outer peripheral portion interposed in the housing of the upper frame and a connection portion extending from the outer peripheral portion toward the central axis and interposed in the dust cap,
Wherein the upper frame is integrally formed by insert injection molding in such a manner that the suspension plate connects the housing and the dust cap by the suspension plate, the suspension plate being interposed between the housing and the dust cap,
Wherein a connection portion of an open type for exposing a part of the suspension plate is formed on a lower side surface of the upper frame so that a lead wire of the voice coil is connected to the suspension plate through the connection portion, However,
A diaphragm seating portion for guiding the diaphragm module to be in a predetermined position is protruded from the upper frame,
Wherein the diaphragm module is fixed to the upper frame in a state of being seated on the diaphragm seating portion and is supported stably by increasing the contact area as the inner side is positioned around the diaphragm seating portion,
A bobbin seating portion protruding from the upper frame for guiding the bobbin to be in position,
Wherein the bobbin is fixed to the upper frame in a state of being seated on the bobbin seating portion, and the contact area is increased as the upper end is inserted around the bobbin seating portion, thereby being stably supported.
delete The method according to claim 1,
And the voice coil is soldered to the suspension plate.
delete delete delete delete A method for manufacturing an ultrathin speaker according to claim 1 or 3,
An upper frame forming step of inserting the suspension plate into the housing when the upper frame is injection molded so that the central axis of the dust cap located at the center of the housing coincides with the central axis of the suspension plate;
Attaching a diaphragm module having an annular shape to a periphery of a diaphragm guide formed on a lower side of the upper frame; And
And a bobbin attaching step of placing the bobbin on which the voice coil is wound inside the diaphragm module and fixing the bobbin on the periphery of the bobbin guide part formed on the lower side of the upper frame,
The ultrasonic speaker is assembled by placing the magnet and the plate on the yoke and coupling the lower frame integrally formed with the yoke to the upper frame so that the outer peripheral portion of the diaphragm module is interposed between the upper and lower frames. / RTI >
The method of claim 8,
In the step of attaching the bobbin, an opening hole is formed on the lower side of the upper frame so as to expose a part of the suspension plate, and a voice coil mounted on the outer periphery of the bobbin is connected to the suspension plate through the opening hole Wherein the ultrasonic wave is applied to the speaker.

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