KR101900072B1 - Speaker assembly and method of assembling the same - Google Patents

Abstract

The present invention relates to a speaker assembly and a method for assembling the same. According to the present invention, the speaker assembly comprises: a frame; a voice coil; a magnetic circuit for supplying a magnetic force to the voice coil, fixed to the frame, and including a yoke having a plurality of slits that are vertically formed, a magnet, and a plate; a vibration plate having an opening formed at the center thereof such that an upper surface of the magnetic circuit is exposed; an inner edge having an outer end fixed to an inner end of the vibration plate and an inner end fixed to an upper surface of the plate to elastically support the vibration plate; an outer edge having an inner end fixed to an outer end of the vibration plate and an outer end fixed to the frame to elastically support the vibration plate; and a coupler including a voice coil coupling unit electrically connected to the voice coil and supporting the voice coil, a plurality of first extensions extending from the voice coil coupling unit to pass through the slits of the yoke, a plurality of second extensions extending from each of the first extensions to be coupled to the vibration plate, and a frame coupling unit extending from the second extensions to be coupled to the frame. The present invention provides an effect of lowering the height of a speaker assembly by excluding interference between a bottom surface of a vibration plate or a dust cap and an upper surface of a magnetic circuit.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a speaker assembly,

The present invention relates to a speaker assembly, and more particularly, to a speaker assembly capable of lowering height while minimizing deterioration of acoustic characteristics.

The speaker assembly is mounted on various electronic devices and performs a function of converting a voice signal to sound. Examples of the electronic apparatus to which the speaker assembly can be mounted include a TV, a monitor, a notebook PC, a tablet PC, a smart phone, a digital camera, and the like. However, according to recent design trends, the thickness of electronic devices tends to be thin. This trend has also reduced the requirements for speaker assemblies mounted as components of electronic devices.

The speaker assembly can be divided into a side-mounted speaker and a rear-mounted speaker depending on the mounting position. Figure 21 shows a speaker enclosure 10 mounted on the back of the display of the TV. The side mount speaker may be a rectangular speaker or a track type speaker in which a vibration plate is mounted on the same plane 12 as a side surface, an upper surface, or a bottom surface of the electronic device. Side-mounted speakers have a width that affects the height of the electronics assembly and the height of the speaker assembly does not affect the height of the electronics assembly.

Since the distance of the diaphragm from the voice coil, which is the center of vibration, is not constant along the direction, the rectangular speaker or the track type speaker is affected by the divided vibration and is difficult to produce uniform acoustic characteristics. (Sound Pressure Level) is low.

The back mounting speaker 20 may be a circular speaker or a square speaker with a low height of the speaker assembly in which the vibration surface is mounted on the same plane 11 as the front or back surface of the electronic device. The backlit speaker affects the height of the electronics assembly and the width of the speaker assembly does not affect the height of the electronics assembly.

Since the circular speaker or the square speaker is relatively uniform in the distance from the voice coil, which is the center of vibration, the vibration plate is relatively uniform in direction, so that it is easy to make uniform acoustic characteristics with little influence of split vibration, SPL has a high effect. However, since the height of the magnet constituting the magnetic circuit must also be low to design the height of the speaker assembly to be low, there is a disadvantage that the driving power of the speaker is lowered. 23, since a diaphragm or a dust cap is mounted above the magnetic circuit, a height d ₁ corresponding to the maximum displacement of the diaphragm in order to prevent interference between the magnetic circuit and the diaphragm (or dust cap) There is a problem that it is difficult to lower the height of the speaker assembly by using the bobbin of the speaker.

Therefore, there is a demand for a structure that can minimize the deterioration of the acoustic performance while lowering the height of the speaker assembly in the back mounted speaker.

Japanese Laid-Open Patent Publication No. 2009-260522 of "PANASONIC CORP." Diaphragm for Speaker and Speaker Using It discloses a general back mounted speaker assembly. According to this structure, due to the adoption of a cone type diaphragm for enhancing the rigidity of the diaphragm and the adoption of a high-height bobbin for avoiding interference between the dust cap and the upper surface of the magnetic circuit (center pole) there is a problem.

Korean Patent No. 1197917, "Ultra-Thin Speaker Unit with Improved Bass Characteristics and Sound Pressure," discloses a rear-mounted speaker assembly employing a flat diaphragm. According to this structure, since the flat type diaphragm having a lower height than the cone type diaphragm is used, there is an advantage that the height of the speaker assembly can be lowered. However, in order to avoid interference between the bottom surface of the diaphragm on which the voice coil is attached and the upper surface of the magnetic circuit (plate), it is required to use a bobbin having a height corresponding to the maximum displacement during vibration at the center portion of the diaphragm, there is a problem.

U.S. Patent Publication No. 2016-0080869 to " Flat plate-type bass loudspeaker "of GOERTEK INC. Discloses a back mounted speaker comprising a plurality of magnetic circuits. According to such a structure, since a plurality of magnetic circuits provide driving power separately, there is an advantage in that the height of the speaker assembly is lowered by using a large number of magnets having a low magnetic force. However, in order to avoid interference between the bottom surface of the diaphragm where the voice coil is attached and the upper surface of the magnetic circuit (center pole), it is required to use a bobbin having a height corresponding to the maximum displacement during vibration at the center of the diaphragm, There is no problem. In addition, since a plurality of magnetic circuits are used, the number of parts is increased, resulting in an increase in manufacturing cost and complication of the assembling process.

"Speaker" of PANASONIC CORP., "Speaker" of FOSTER ELECTRIC, "Thin Speaker" of JP-A-2013-157691 of United States Patent No. 9025809 of Rockford Corporation, and "Voicecoil affixation" Disclosed is a speaker structure including a voice coil support structure that forms a slit in a vertical direction and penetrates a slit. According to this structure, since the height of the bobbin can be reduced, the height of the speaker assembly can be reduced. However, since the cone type diaphragm is used, the height of the speaker assembly is increased, and the dust cap is coupled to the center of the vibration plate. Therefore, space for avoiding interference between the dust cap and the upper surface of the magnetic circuit is required. have. Furthermore, the structure of the support structure for supporting the voice coil is complicated, and the weight of the vibration system is increased due to the weight of the support structure, resulting in a problem that the speaker efficiency is reduced.

Korean Patent Laid-Open Publication No. 10-2013-0141303 entitled "Speaker Unit with High Output and Low Height" in Korea, adopts a planar diaphragm, and a voice coil is wound on a magnetic circuit through a metal suspension passing through a slit formed in a vertical direction A speaker assembly for supporting a speaker. According to this structure, since the voice coil is supported by the metal suspension supported by the speaker frame, the increase of the weight of the vibration system can be minimized and the height of the speaker assembly due to the dome type vibration plate can be prevented. However, due to the structure in which the bobbin is directly attached to the bottom of the diaphragm, an additional space is still required to avoid the interference between the diaphragm and the magnetic circuit, so that the height of the speaker assembly can not be sufficiently lowered. Further, a plurality of suspensions are required above and below the voice coil, which complicates the structure of the speaker assembly.

JP 2009-260522 A US 2016-0080869 A1 US 2003-0053651 A1 JP 2013-157691 A US 9025809 B1 KR 10-2013-0141303 A

In order to solve the above problems, the present invention provides a speaker assembly and a method of assembling the same, which employs an annular diaphragm that exposes an upper surface of a magnetic circuit, wherein an inner end and an outer end of the diaphragm each have an inner edge and an outer To prevent the interference between the vibration plate bottom surface or the dust cap and the upper surface of the magnetic circuit, thereby lowering the height of the speaker assembly.

The inner edge of the annular diaphragm is resiliently supported by the inner edge and the outer edge of the annular diaphragm is resiliently supported by the outer edge of the annular diaphragm to suppress the divided vibration generated on the surface of the diaphragm, In order to solve the problem.

A speaker assembly and a method of assembling the same according to an embodiment of the present invention can simplify an electric path between a voice coil and an external circuit by using a coupler that is coupled to a frame and elastically supports a diaphragm and penetrates a slit of a yoke, And to minimize the weight increase of the vibration system by the supporting structure.

A speaker assembly and a method of assembling the same according to an embodiment of the present invention aim at minimizing voice coil radiation heat transmitted to the diaphragm because the diaphragm is not located on the voice coil and to improve the heat radiation performance by exposing the top surface of the magnetic circuit .

A speaker assembly and a method of assembling the speaker assembly according to embodiments of the present invention are intended to simplify a speaker assembly process and improve assembly accuracy through a frame including a structure for aligning positions of respective parts when assembling a speaker assembly.

According to an aspect of the present invention, there is provided a speaker assembly comprising: a frame; Voice coil; A magnetic circuit configured to supply magnetic force to the voice coil and to be fixed to the frame, the yoke including a yoke, a magnet, and a plate; A diaphragm having an opening at its center so as to expose an uppermost surface of the magnetic circuit; The outer end of the diaphragm is fixed to the inner end of the diaphragm so that the diaphragm is positioned lower than the height of the top surface of the magnetic circuit in a state where the electric signal is not transmitted, Inner edge; And an outer end fixed to the outer end of the diaphragm so that the diaphragm is positioned lower than a height of the uppermost surface of the magnetic circuit in a state where the electric signal is not exposed, And an edge.

In the speaker assembly according to the embodiment of the present invention, the yoke includes a plurality of slits formed in the vertical direction, and the speaker assembly is electrically connected to the voice coil, and the voice coil coupling A plurality of first extensions extending from the voice coil coupling portion and extending through the slits of the yoke, a plurality of second extensions extending from the first extensions and coupled with the diaphragm, And a frame coupling portion extending from the frame portion and coupled with the frame.

In a speaker assembly according to an embodiment of the present invention, the diaphragm is substantially planar and the coupler is substantially planar.

In the speaker assembly according to an embodiment of the present invention, the coupler has an inner end connected to an outer end of the second extensions, and an outer end connected to the frame coupling portion to connect the inner end of the outer edge, And an elastic support portion located between the outer end portions.

In the speaker assembly according to the embodiment of the present invention, the second extending portions are coupled to the upper surface of the diaphragm through a bottom surface, and the frame engaging portion is engaged with the upper surface of the outer end of the outer edge through a part of the bottom surface And engages with the upper surface of the frame through another part of the bottom surface and the outer edge engages with the upper surface of the frame through the bottom surface of the outer end and engages with the bottom surface of the diaphragm via the upper surface of the inner end. .

In the speaker assembly according to the embodiment of the present invention, the inner edge has a convex shape in the upward direction, and includes a first connection portion connecting the inner end portion and the outer end portion, and the outer edge has a convex shape And a second connecting portion connecting the inner end portion and the outer end portion.

A speaker assembly according to the present invention includes: a frame; Voice coil; A magnetic circuit comprising a yoke, a magnet, and a plate fixed to the frame and supplying a magnetic force to the voice coil, the yoke including a plurality of slits formed in a vertical direction; A diaphragm having an opening at its center so as to expose an upper surface of the magnetic circuit; An inner edge fixed to the inner end of the diaphragm and an inner edge fixed to the upper surface of the plate to elastically support the diaphragm; An inner edge fixed to the outer edge of the diaphragm and an outer edge fixed to the frame to elastically support the diaphragm; A voice coil coupling portion electrically connected to the voice coil and supporting the voice coil, a plurality of first extensions extending from the voice coil coupling portion and passing through the slits of the yoke, And a plurality of second extending portions extending from the first extending portions and coupled to the diaphragm, and a frame coupling portion extending from the second extending portions and engaged with the frame.

In the speaker assembly according to the embodiment of the present invention, the first extending portion is formed to have an average width wider than an average width of the second extending portion.

In the speaker assembly according to the embodiment of the present invention, the coupler may be divided into a first electrode portion and a second electrode portion to physically separate audio signals of different polarities from each other to receive the audio signal at each end of the voice coil .

In the speaker assembly according to the embodiment of the present invention, a part of the first extending portions is divided into the first electrode portion and the second electrode portion.

In the speaker assembly according to the embodiment of the present invention, the voice coil coupling portion is formed in a circular shape having an inner diameter larger than the outer diameter of the plate and having an outer diameter smaller than the inner diameter of the yoke, Wherein the coupler is formed in a circular shape having an inner diameter larger than an outer diameter of the yoke, the coupler being connected to an outer end of the first extensions, And an inner edge coupling portion which engages with an upper surface of the inner end portion of the diaphragm via a bottom surface and engages with a bottom surface of the outer end portion of the inner edge via an upper surface, And the outer edge of the inner edge of the diaphragm is formed to extend outward at an interval of 90 degrees from the inner edge of the diaphragm, An elastic support portion having an inner end connected to an outer end of the second extensions and an outer end connected to the frame engagement portion and positioned between the inner end and the outer end of the outer edge; Wherein the frame engaging portion engages with the upper surface of the outer end of the outer edge through a portion of the bottom surface and engages with the upper surface of the frame through another portion of the bottom surface.

In the speaker assembly according to the embodiment of the present invention, the inner edge may further include a first connecting portion connecting the inner end and the outer end in a convex shape upward, and the inner edge may be coupled with the upper surface of the plate through the bottom surface of the inner end. And a second connecting portion connecting the inner end and the outer end in a downward convex shape, wherein the outer edge is joined to the upper surface of the inner edge coupling portion through the bottom surface of the outer end portion, And engages with the upper surface of the frame through the bottom surface of the outer end portion and engages with a portion of the bottom surface of the frame coupling portion via the upper surface of the outer end portion.

A speaker assembly according to the present invention includes: a frame; Voice coil; A magnetic circuit comprising a yoke, a magnet, and a plate fixed to the frame and supplying a magnetic force to the voice coil, the yoke including a plurality of slits formed in a vertical direction; A diaphragm having an opening at its center so as to expose an upper surface of the magnetic circuit; An inner edge fixed to the inner end of the diaphragm and an inner edge fixed to the upper surface of the plate to elastically support the diaphragm; An inner edge fixed to the outer edge of the diaphragm and an outer edge fixed to the frame to elastically support the diaphragm; And a plurality of first extending portions extending from the voice coil coupling portion and passing through the slits of the yoke, wherein the voice coil coupling portion includes: a voice coil coupling portion that is electrically connected to the voice coil and supports the voice coil; Wherein the plate further includes a first step on an upper surface of the plate so that the inner height of the plate is higher than the outer height so as to be aligned with the inner diameter of the inner edge.

In the speaker assembly according to an embodiment of the present invention, the frame may further include a second step portion formed on the outer circumference portion such that an inside height thereof is lower than an outside height so as to be aligned with an outer diameter of the outer edge.

The speaker assembly according to an embodiment of the present invention is characterized in that the coupler includes a plurality of second extensions extending from the first extensions and coupled with the diaphragm and the frame and a second extension extending from the second extensions, And the frame has a third stepped portion formed outside the second stepped portion so that the height of the inner side is lower than the height of the outer side so as to be aligned with the outer diameter of the frame engagement portion of the coupler, And further comprising:

In the speaker assembly according to the embodiment of the present invention, the frame may further include a yoke aligning portion for aligning the yokes so that the slits of the yoke and the first extensions of the coupler are aligned.

In the speaker assembly according to an embodiment of the present invention, the yoke arranging portion is an engaging projection for engaging with at least a lower end portion of at least a part of the slits.

A method of assembling a speaker assembly according to the present invention includes the steps of: joining a yoke including a frame including a yoke coupling hole and a yoke alignment portion and a plurality of slits formed in a vertical direction; Forming a frame assembly by laminating the magnet and the plate on a bottom surface of the yoke so that the side surfaces of the yoke, the side surfaces of the magnet, and the side surfaces of the plate are spaced apart from each other; A voice coil coupling portion for supporting the voice coil; a plurality of first extending portions extending from the voice coil coupling portion; second extending portions each extending from the first extending portions; Coupling the voice coil to a voice coil coupling portion of a coupler including a frame coupling portion formed to be connected to the voice coil coupling portion; Coupling the diaphragm with the diaphragm including an opening having an inner diameter greater than the outer diameter of the yoke; Coupling an inner end of the diaphragm to an outer end of the inner edge and coupling an outer end of the diaphragm to an inner end of the outer edge to form a diaphragm assembly; And coupling the frame assembly and the diaphragm assembly such that the first extensions penetrate the slit of the yoke.

In the method of assembling a speaker assembly according to an embodiment of the present invention, the plate may further include a first stepped portion on an upper surface, the inner step height of which is higher than the outer height so as to be aligned with an inner diameter of the inner edge, Wherein coupling the assembly to the diaphragm assembly comprises aligning the inner end of the inner edge with the first step to engage the frame assembly and the diaphragm assembly.

According to the present invention, a speaker assembly and a method of assembling the speaker assembly according to the present invention employ an annular diaphragm that exposes an upper surface of a magnetic circuit, and an inner end and an outer end of the diaphragm are coupled with an inner edge and an outer edge, Thereby eliminating the interference between the bottom surface of the diaphragm or the dust cap and the upper surface of the magnetic circuit, thereby reducing the height of the speaker assembly.

The inner edge of the annular diaphragm is resiliently supported by the inner edge and the outer edge of the annular diaphragm is resiliently supported by the outer edge of the annular diaphragm to suppress the divided vibration generated on the surface of the diaphragm, And the like.

A speaker assembly and a method of assembling the same according to an embodiment of the present invention can simplify an electric path between a voice coil and an external circuit by using a coupler that is coupled to a frame and elastically supports a diaphragm and penetrates a slit of a yoke, Thereby providing an effect of minimizing the weight increase of the vibration system by the support structure.

The speaker assembly and the assembly method thereof according to the embodiment of the present invention provide an effect of minimizing the voice coil radiation heat transmitted to the diaphragm because the diaphragm is not disposed on the voice coil and improving the heat radiation performance by exposing the upper surface of the magnetic circuit .

A speaker assembly and a method of assembling the same according to an embodiment of the present invention can simplify a speaker assembling process and improve assembly precision through a frame including a structure for aligning positions of respective parts when assembling a speaker assembly.

1 is a top view of a speaker assembly according to an embodiment of the present invention.
2 is a bottom view of a speaker assembly according to an embodiment of the present invention.
3 is a side view of a speaker assembly according to an embodiment of the present invention.
4 is an exploded view illustrating components of a speaker assembly in accordance with an embodiment of the present invention.
5 is a cross-sectional view showing a longitudinal section of a speaker assembly according to an embodiment of the present invention.
6 is a detailed sectional view showing in detail a longitudinal section of a speaker assembly according to an embodiment of the present invention;
7 is a detailed cross-sectional view illustrating the structure of an inner region of a speaker assembly according to an embodiment of the present invention;
8 is a detailed cross-sectional view illustrating the structure of an outer region of a speaker assembly according to an embodiment of the present invention;
9 is a view of a frame of a speaker assembly according to an embodiment of the present invention.
10 is a view showing an assembled state of a frame and a yoke of a speaker assembly according to an embodiment of the present invention.
11 is a view of a frame assembly of a speaker assembly according to an embodiment of the present invention.
12 illustrates a coupler of a speaker assembly according to an embodiment of the present invention.
13 is a view showing an assembled state of the voice coil and the coupler of the speaker assembly according to the embodiment of the present invention.
14 is a view showing an assembled state of a coupler, voice coil, and diaphragm of a speaker assembly according to an embodiment of the present invention.
15 is a top view of a diaphragm assembly according to an embodiment of the present invention.
16 is a bottom view of a diaphragm assembly according to an embodiment of the present invention.
17 is a diagram illustrating frequencies at which a vibration mode occurs in a prior art speaker assembly.
18 shows a vibration plate vibration mode of a speaker assembly according to the prior art;
19 is a diagram illustrating a frequency at which a vibration mode occurs in a speaker assembly according to an embodiment of the present invention.
20 is a view showing a vibrating plate vibration mode of a speaker assembly according to an embodiment of the present invention.
21 is a view showing an enclosure mounted on a display back side of a TV device;
Figure 22 shows a prior art speaker assembly.
23 is a cross-sectional view showing a longitudinal section of a conventional speaker assembly;

The terms and words used in the present specification and claims should not be construed in a conventional or dictionary sense and should be construed in accordance with the principles by which the inventor can define terms and concepts to best describe his invention And should be construed in accordance with the meaning and concept consistent with the technical idea of the present invention.

Therefore, the embodiments described in the present specification and the configurations shown in the drawings correspond to the preferred embodiments of the present invention and do not represent all the technical ideas of the present invention. Therefore, There may be equivalents and variations.

The specification that "comprises" any element in any specification throughout the specification does not exclude other elements, but may also include other elements, unless the context clearly indicates otherwise.

Hereinafter, a speaker assembly 100 according to the present invention will be described with reference to the drawings. 1 is a top plan view of a speaker assembly 100 according to an embodiment of the present invention; Fig. 2 is a bottom view of a speaker assembly 100 according to an embodiment of the present invention; Fig. 3 is a perspective view of a speaker assembly 100 And Fig. 4 illustrates an exploded view of a speaker assembly 100 according to an embodiment of the present invention, respectively.

Hereinafter, a speaker assembly 100 according to the present invention will be described with a focus on the height reduction of the speaker assembly 100. FIG.

A speaker assembly 100 according to the present invention includes a frame 110, a voice coil 120, magnetic circuits 131, 133 and 134, a diaphragm 140, an inner edge 150, And an outer edge 160.

Figure 9 shows a frame 110 according to an embodiment of the present invention. The frame 110 together with the diaphragm 140 defines the contour of the speaker assembly 100. The shape of the frame 110 is not particularly limited and may be formed to have a planar shape such as a circle or a square depending on the shape of the diaphragm 140. The material of the frame 110 is not particularly limited, and the frame 110 may be formed of, for example, a polymer material or a metal material. Meanwhile, in order to reduce the height of the speaker assembly 100, the thickness of the frame 110 is preferably less than 0.8 mm.

The bottom surface of the frame 110 may be configured to include an acoustic hole 114 of a suitable shape for allowing the backside sound of the diaphragm 140 to be radiated to the enclosure 10 in the case of an embodiment that engages the enclosure 10, 10 may be configured so that there is no sound hole 114 in the case of the embodiment not combined with the sound hole 114. [

The central portion of the bottom surface of the frame 110 may further include a yoke coupling hole 115 to expose a bottom surface of the yoke 131. According to the embodiment including the yoke coupling hole 115, since the bottom surface of the yoke 131 is exposed, the efficiency of heat dissipation of the speaker assembly 100 is increased and the height of the speaker assembly 100 is minimized do. The yoke aligning portion 113 may further include a yoke aligning portion 113 around the yoke engaging hole 115 so that the slit 132 formed in the yoke 131 and the first extending portion 172 of the coupler 170 are aligned with each other. have.

An electric audio signal is applied to the voice coil 120 by an external circuit, and the voice coil 120 is positioned between the magnetic gaps of the magnetic circuit, so that electromagnetic force of upward or downward acts. The shape and material of the voice coil 120 are not particularly limited. On the other hand, since the voice coil of the conventional speaker assembly 20 is attached to the bottom surface of the diaphragm or the bottom surface of the dust cap, a bobbin having a considerable height (d ₁ ) is required to secure the vibration displacement as shown in Fig. Therefore, it is difficult to reduce the height of the speaker assembly 20 due to the height of the bobbin of the conventional speaker assembly 20. [ Since the voice coil 120 of the speaker assembly 100 of the present invention is not attached to the bottom surface of the diaphragm 140 or the bottom surface of the dust cap as shown in FIG. 5, the voice coil 120 of the self- The height of the speaker assembly 100 can be reduced by using the voice coil 120 wound on a bobbin having a height within 130% of the height of the voice coil 120, for example. Although the self-bonding type voice coil 120 is advantageous in reducing the height of the speaker assembly 100, since the self-bonding voice coil 120 is difficult to maintain the wound shape, The coil 120 may be used.

As shown in FIG. 4, the diaphragm 140 is formed with an opening 141 at its center so that the top surface of the magnetic circuit is exposed. That is, the diaphragm 140 has an annular shape and the uppermost surface of the magnetic circuit is exposed through the center portion. In the embodiment of FIG. 1, the top surface of the magnetic circuit may be the top surface of the plate 134. The shape of the plane of the diaphragm 140 is not particularly limited and can be a square or a circle. The shape of the opening 141 is also not particularly limited, but may be circular or rectangular depending on the planar shape of the magnetic circuit. The inner diameter of the opening 141 is formed at least larger than the outer diameter of the magnetic circuit. 1, the inner diameter of the opening 141 is made larger than the outer diameter of the yoke 131, and in the embodiment including the outer magnetic circuit, the outer diameter of the plate 134 is smaller than the outer diameter of the plate 134, (141).

The material of the diaphragm 140 is not particularly limited and may be a fiber diaphragm 140, a resin diaphragm 140, a metal diaphragm 140, a ceramic diaphragm 140, or the like. The bottom surface of the magnetic circuit is exposed through the bottom surface of the frame 110 as in the case of the speaker assembly 100 according to the embodiment of the present invention shown in FIG. 2, and the top surface of the magnetic circuit, as shown in FIG. 1, And the voice coil 120 is not attached to the bottom surface of the speaker, the diaphragm 140 is formed of a material having heat resistance lower than that of the conventional diaphragm 140 because the diaphragm 140 has a high heat- There is an advantage that reliability can be expected.

The cross-sectional shape of the diaphragm 140 is most preferably planar in order to minimize the height reduction of the speaker assembly 100 as shown in FIG. 4. However, in order to reinforce the diaphragm 140, A convex portion or a concave portion for rigidity reinforcement may be further formed and a portion of the diaphragm 140 may include a step shape lower than other portions. A diaphragm having a gentle curvature may be used or a diaphragm of a honeycomb structure may be used to increase the structural stiffness of the diaphragm 140 according to the embodiment.

6 and 7, the outer edge of the inner edge 150 is located at an inner end of the diaphragm 140 such that the diaphragm 140 is located at a position lower than the height of the uppermost surface of the magnetic circuit, And the inner end is fixed to the upper surface of the plate 134 to elastically support the diaphragm 140. The inner edge 150 and the outer edge of the inner edge 150 are formed to have a planar shape as shown in FIG. 7, and a first connecting portion 151 having an upward convex shape is formed between the inner end and the outer end, compliance. It is preferable to design the sectional shape of the inner edge 150 so that the top surface of the yoke 131 and the first connection portion 151 of the inner edge 150 do not contact each other when the diaphragm 140 is moved in the lowermost position . The inner edge 150 defines the position of the diaphragm 140 to match the voice coil 120 with the magnetic gap and provides a damping force to the diaphragm 140 at the same time as the outer edge 160 do.

6 and 8, the inner edge of the outer edge 160 is located at the outer end of the diaphragm 140 such that the diaphragm 140 is located at a position lower than the height of the top surface of the magnetic circuit, And the outer end thereof is fixed to the frame 110 to elastically support the diaphragm 140. The outer edge 160 defines the position of the diaphragm 140 together with the inner edge 150 to match the voice coil 120 to the magnetic gap and to provide a damping force simultaneously with the inner edge 150 during vibration of the diaphragm 140 To the diaphragm (140).

According to the speaker assembly 100 of the present invention, since the inner peripheral surface of the diaphragm 140 is elastically supported by the inner edge 150 and the outer peripheral surface of the diaphragm 140 by the outer edge 160, only the outer peripheral surface of the diaphragm 140 It is possible to suppress the generation of divided vibration as compared with the conventional speaker assembly 100 which is elastically supported. Thus, the speaker assembly 100 according to the present invention provides an effect with even SPL over a wide frequency band.

Meanwhile, according to the embodiment of the present invention, the voice coil 120 can be supported by the coupler 170 as shown in FIG. In this case, the yoke 131 includes a plurality of slits 132 formed in the vertical direction. The coupler 170 may be configured to be electrically connected to the voice coil 120. For this purpose, it is preferable that the coupler 170 is formed of a conductive material such as a metal flake or the coupler 170 is formed of a nonconductive material, but the electrical path is preferably formed by etching or vapor-depositing a conductive material. 12, the coupler 170 may include at least two first and second electrode portions 176 and 177, such as first and second electrode portions 176 and 177, which are electrically separated from each other to electrically couple to both ends of the voice coil 120, Components.

The coupler 170 includes a voice coil coupling portion 171, a plurality of first extending portions 172, a plurality of second extending portions 173, and a frame coupling portion 174. The voice coil coupling portion 171 is located at the innermost side of the coupler 170 and functions to support the voice coil 120. The upper surface of the voice coil 120 and the lower surface of the coupler 170 may be directly coupled to each other or the upper surface of the bobbin and the lower surface of the coupler 170 may be coupled to each other. Or the outer surface of the bobbin may be configured to engage with the inner surface of the coupler 170. [

The plurality of first extending portions 172 extend outward from the voice coil coupling portion 171 and are configured to penetrate the slits 132 of the yoke 131. When the diaphragm 140 vibrates, the first extended portions 172 move up and down along the slit 132 of the yoke 131. The width of the first extension portion 172 is formed to be narrower than the width of the slit 132 so as not to be in contact with the slit 132. If the width of the first extension 172 is excessively narrow, the coupler 170 may not have sufficient rigidity to transmit the electromagnetic force to the diaphragm 140. If the width of the first extension 172 is excessively wide, The width of the slits 132 of the first extended portion 172 is increased to increase the leakage magnetic flux. Therefore, the width of the first extended portion 172 should be appropriately determined in consideration of this.

The second extensions 173 extend from the first extensions 172 and function to engage with the diaphragm 140. 1, the second extension portions 173 may be configured to be attached to the upper surface of the diaphragm 140 through a bottom surface. In contrast, according to an embodiment, the second extension portions 173 are connected to the diaphragm 140 via the upper surface, (Not shown). 12, the coupler 170 is formed at the boundary between the second extending portion 173 and the first extending portion 172. The coupler 170 has an annular inner edge coupling portion 174 for coupling to the periphery of the opening 141 of the diaphragm 140, (178).

The coupler 170 may be configured to include a frame engaging portion 174 extending from the second extensions 173 to engage the frame 110. The frame engaging portion 174 is configured to engage with the upper surface of the frame 110. On the other hand, it is preferred that the coupler 170 acts as a suspension replacing a corrugation damper of a conventional fabric material to provide a damping force to the diaphragm 140. To this end, the coupler 170 has an inner end connected to the outer ends of the second extensions 173, and an outer end connected to the frame engaging portion 174 to form a gap between the inner end of the outer edge 160 and the outer end The elastic support portion 175 may be formed of a metal.

In order to minimize the height of the speaker assembly 100, increase the mass productivity of the speaker components, and improve the assembly convenience, it is preferable that the diaphragm 140 and the coupler 170 are formed in a substantially planar shape as shown in FIG. 4 .

Hereinafter, the coupling relationship of the coupler 170, the outer edge 160, and the frame 110 of the speaker assembly 100 according to the embodiment of the present invention will be described in detail with reference to FIG. The second extending portions 173 of the coupler 170 are coupled to the upper surface of the diaphragm 140 through the bottom surface and the frame engaging portion 174 is coupled with the upper surface of the outer end of the outer edge 160 And engages with the top surface of the frame 110 through another portion of the bottom surface. 6, the bottom surface of the four corner portions of the coupler 170 engages the top surface of the frame 110, and the bottom surface of the remaining portion engages the top surface of the outer edge 160, as shown in FIG. 8 . At this time, it is preferable that the height of the edge portion of the frame 110 is formed as high as the thickness of the outer edge of the outer edge 160 as shown in FIG. The outer edge 160 engages the upper surface of the frame 110 through the bottom surface of the outer end and engages the frame engaging portion 174 of the coupler 170 through the upper surface of the outer end, And can engage with the bottom surface of the diaphragm 140. With this structure, the assembly strength of the components of the speaker assembly 100 can be increased.

These embodiments are illustrative, and the second extensions 173 of the coupler 170 may be coupled to the bottom surface of the diaphragm 140 via the top surface, according to an embodiment. The frame engaging portion 174 is coupled to the upper surface of the frame 110 through the bottom surface and may be coupled to the bottom surface of the outer edge 160 via the upper surface. The outer edge 160 may engage with the upper surface of the diaphragm 140 through the bottom surface of the inner end.

7, the inner edge 150 has a convex shape in the upward direction and includes a first connection part 151 connecting the inner end and the outer end, And the outer edge 160 may have a convex shape downward as shown in FIG. 8, and may include a second connection portion 161 connecting the inner end and the outer end. According to an embodiment, the outer edge 160 may be contoured to have a convex shape in the upward direction and include a connecting portion connecting the inner end and the outer end.

Hereinafter, a speaker assembly 100 according to an embodiment of the present invention will be described, focusing on the structure of the coupler 170. FIG. The description of the above-described description and repeated elements will be omitted.

A speaker assembly 100 according to the present invention includes a frame 110, a voice coil 120, magnetic circuits 131, 133 and 135, a diaphragm 140, an inner edge 150, an outer edge 160, (170).

The frame 110 defines the external shape of the speaker assembly 100, and the voice coil 120 receives an electrical audio signal from an external circuit. The magnetic circuit includes a yoke 131, which is fixed to the frame 110 and supplies magnetic force to the voice coil 120, and includes a plurality of slits 132 formed in the vertical direction as shown in FIGS. 4 and 10, A magnet 133, and a plate 134 as shown in Fig. The diaphragm 140 is formed with an opening 141 at its center so as to expose an upper surface of the magnetic circuit.

The inner edge 150 has an outer end fixed to the inner end of the diaphragm 140 and an inner end fixed to the upper surface of the plate 134 to elastically support the diaphragm 140. The outer edge 160 has an inner end fixed to the outer end of the diaphragm 140 and an outer end fixed to the frame 110 to elastically support the diaphragm 140.

The coupler 170 is electrically connected to the voice coil 120 and includes a voice coil coupling portion 171 for supporting the voice coil 120 as shown in FIG. 12, A plurality of second extending portions 173 extending from the first extending portions 172 and coupled with the diaphragm 140, respectively, a plurality of first extending portions 172 passing through the slits 132 of the diaphragm 131, And a frame engaging portion 174 extending from the second extending portions 173 and engaging with the frame 110. As shown in FIG.

It is preferable that the first extension 172 has a high rigidity because it is necessary to transmit the vibration of the voice coil 120 to the diaphragm 140 without being attached to the diaphragm 140 or the like. The second extension 173 is preferably attached to the diaphragm 140 and has adequate compliance rather than high rigidity because it performs the function of providing the diaphragm 140 with a damping force. Therefore, in FIG. 12, it is preferable that the first extending portions 172 are formed to have an average width wider than the average width of the second extending portions 173 so that each region of the same part can have a difference in rigidity . According to this structure, the metal plate can be easily coupled to the coupler 170 including the first extension portion 172 having high rigidity and the second extension portion 173 having high compliance through a single pressing process or a single etching process. As shown in Fig.

Meanwhile, the coupler 170 is formed as a conductor, and the coupler 170 functions as an electrical path between the external circuit and the voice coil 120, thereby simplifying the structure of the speaker assembly 100 and simplifying the assembling process. 12, the coupler 170 is physically separated from the first electrode unit 176 and the second electrode 176 to receive audio signals of different polarities and to provide the audio signals to the respective ends of the voice coil 120, (177). ≪ / RTI > At this time, a portion of the first extension 172 may be divided into a first electrode portion 176 and a second electrode portion 177 as shown in FIG.

12, the voice coil coupling portion 171 has an inner diameter larger than the outer diameter of the plate 134 in the case of the inner speaker assembly 100, and is larger than the inner diameter of the yoke 131 And is formed in a circular shape having a small outer diameter so as to be positioned in the magnetic gap. The voice coil coupling portion 171 may be formed along the plane shape of the voice coil 120. For example, when the voice coil coupling portion 171 is coupled to the circular voice coil 120, the voice coil coupling portion 171 may be configured to have a substantially circular shape It can be configured in the form of a divided arc that is part of the circle.

The first extension portions 172 may extend outward at intervals of 90 degrees from the voice coil coupling portion 171. In this case, the first extended portions 172 are formed of four pieces. On the other hand, the number of slits 132 of the yoke 131 is determined by the number of the first extensions 172. When the slit 132 of the yoke 131 is excessively large, the leakage magnetic flux is increased, The strength of the magnetic field applied to the speaker 120 may be weakened and the speaker driving force may decrease. It is therefore important to select the appropriate number of first extensions 172. However, when the number of the first extensions 172 is too small, the voice coil 120 can not maintain parallelism when the diaphragm 140 vibrates, and a failure to contact the magnetic circuit may occur. Therefore, it is preferable that the number of the first extending portions 172 is three to six.

The coupler 170 may further include an inner edge coupling portion 178. The inner edge coupling portion 178 is connected to the outer ends of the first extending portions 172 and is formed in a circular shape having an inner diameter larger than the outer diameter of the yoke 131, ) And engage with the bottom surface of the outer end of the inner edge 150 through the top surface. Depending on the embodiment, the inner edge engagement portion 178 may engage the bottom surface of the inner end of the diaphragm 140 via the upper surface.

The inner edge coupling portion 178 is formed to be similar to the shape of the opening 141 of the diaphragm 140 because it is coupled to the opening 141 of the diaphragm 140 as shown in FIG. Thus, when coupled to the opening 141 of the circular diaphragm 140, the inner edge engagement portion 178 can be configured to have a substantially circular shape or in the form of a segmented arc that is part of a circle.

As shown in the embodiment of FIG. 14, the second extensions 173 are each formed to extend outward at intervals of 90 degrees from the inner edge engaging portion 178 to be aligned with the first extensions 172, The upper surface of the diaphragm 140 can be coupled with the upper surface of the diaphragm 140. In some embodiments, the second extensions 173 may extend outwardly in shape and in an unaligned manner with the first extensions 172 and may engage the bottom of the diaphragm 140 through the upper surface .

Next, the coupler 170 may further include an elastic support portion 175. The elastic support portion 175 has an inner end connected to the outer end of the second extending portions 173 and an outer end connected to the frame engaging portion 174 to be positioned between the inner end and the outer end of the outer edge 160 Can be configured. According to this configuration, there is an effect of effectively providing a damping force to the diaphragm 140 through the elastic support portion 175 that is not engaged with the frame 110 or the diaphragm 140.

The frame engaging portion 174 can be configured to engage with the upper surface of the outer end of the outer edge 160 through a portion of the bottom surface and to engage with the upper surface of the frame 110 through another portion of the bottom surface. 4, the outer circumferential portion of the frame engaging portion 174 is wider than the outer circumferential portion of the outer edge 160 so that the frame engaging portion 174 located at four corners is configured to be coupled to the frame 110 directly, And the outer edge of the outer edge 160, so that the coupling strength between the parts can be enhanced. Depending on the embodiment, the entire frame engaging portion 174 may be configured to engage with the upper surface of the frame 110 through the bottom surface, or the entire frame engaging portion 174 may be configured to engage with the outer end of the outer edge 160 through the bottom surface have. Or the frame engaging portion 174 may be configured to engage with the upper surface of the frame 110 through the bottom surface and to engage with the outer end of the edge through the upper surface.

6 and 7, the inner edge 150 further includes a first connecting portion 151 connecting the inner end and the outer end in a convex shape upward, May be configured to engage the upper surface of the inner edge coupling portion (134) and to engage the upper surface of the inner edge engagement portion (178) through the bottom surface of the outer end portion. 7, the inner edge 150 is formed so that the height of the inner end of the inner edge coupled to the upper surface of the plate 134 is higher than the height of the outer end of the inner edge 150 coupled to the diaphragm 140, It is desirable to relatively lower the position of the diaphragm 140 so as to be positioned in the magnetic gap.

6 and 8, the outer edge 160 further includes a second connection portion 161 connecting the inner end and the outer end in a downwardly convex shape, and the diaphragm (not shown) 140, engage with the upper surface of the frame 110 through the bottom surface of the outer end, and engage with a portion of the bottom surface of the frame engaging portion 174 through the upper surface of the outer end.

Meanwhile, according to the embodiment, the resin-based diaphragm 140 is insert-injected so as to include the metal coupler 170, so that the coupler 170 and the diaphragm 140 can be integrated to improve assembly convenience.

Hereinafter, a speaker assembly according to an embodiment of the present invention will be described with reference to a structure for improving the assembling convenience of the speaker assembly 100. FIG. The description of the above-described description and repeated elements will be omitted.

The speaker assembly 100 of the present invention includes a frame 110, a voice coil 120, magnetic circuits 131, 133 and 134, a diaphragm 140, an inner edge 150, an outer edge 160, 170).

The frame 110 defines the external shape of the speaker assembly 100, and the voice coil 120 receives an electrical audio signal from an external circuit. The magnetic circuit includes a yoke 131, which is fixed to the frame 110 and supplies magnetic force to the voice coil 120, and includes a plurality of slits 132 formed in the vertical direction as shown in FIGS. 4 and 10, A magnet 133, and a plate 134 as shown in Fig. The diaphragm 140 is formed with an opening 141 at its center so as to expose an upper surface of the magnetic circuit.

The inner edge 150 has an outer end fixed to the inner end of the diaphragm 140 and an inner end fixed to the upper surface of the plate 134 to elastically support the diaphragm 140. The outer edge 160 has an inner end fixed to the outer end of the diaphragm 140 and an outer end fixed to the frame 110 to elastically support the diaphragm 140.

The coupler 170 is electrically connected to the voice coil 120 and includes a voice coil coupling portion 171 for supporting the voice coil 120 and a voice coil coupling portion 173 extending from the voice coil coupling portion 171, And a plurality of first extension portions 172 passing through the first extension portions 172.

4 to 7, the plate 134 further includes a first stepped portion 135 formed on the upper surface thereof such that the inner height thereof is higher than the outer height thereof so as to be aligned with the inner diameter of the inner edge 150 .

According to this configuration, the first step 135 of the plate 134 engages the inner edge 150 when assembling the speaker assembly 100. The voice coil 120, the coupler 170, the diaphragm 140, the inner edge 150 and the outer edge 160 are separately assembled as a diaphragm assembly, and the frame 110, the yoke 131, 133), the plate 134 is assembled separately as a frame assembly and then finally the frame assembly and the diaphragm assembly engage, wherein the first step 135 of the plate 134 engages the inner diameter of the inner edge 150 There is an effect that the frame assembly and the diaphragm assembly can be aligned and assembled easily without a separate assembly jig.

More preferably, the frame 110 further includes a second stepped portion 111 formed on the outer circumferential portion such that the inside height thereof is lower than the outer height so as to be aligned with the outer diameter of the outer edge 160 as shown in FIG. 5 . Accordingly, since the second stepped portion 111 of the frame 110 and the outer edge 160 are engaged with each other, the frame assembly and the diaphragm assembly can be easily assembled and assembled without the assembly jig.

More precisely, the coupler 170 includes a plurality of second extensions 173 extending from the first extensions 172 and coupled to the diaphragm 140 and the frame 110, and a plurality of second extensions 173 The frame 110 further includes a frame engaging portion 174 of the coupler 170 on the outside of the second step portion 111. The frame engaging portion 174 extends from the frame engaging portion 174, And a third stepped portion having an inner height lower than an outer height so as to be aligned with an outer diameter of the outer peripheral portion. Therefore, the third step portion of the frame 110 and the outer end of the inner edge 150 are engaged with each other, so that the frame assembly and the diaphragm assembly can be assembled easily without the assembly jig.

The frame 110 is fixed to the yoke 131 so that the slits 132 of the yoke 131 and the first extensions 172 of the coupler 170 are aligned as shown in FIGS. 2, 9, And the yoke alignment part 113 may be formed of at least a coupling protrusion for coupling with a lower end of at least one of the slits 132 . According to this embodiment, the position of the slit 132 and the position of the first extending portion 172 can be easily aligned.

 Hereinafter, a method of assembling the speaker assembly 100 according to the present invention will be described with reference to FIGS. A yoke 131 including a frame 110 including a yoke coupling hole 115 and a yoke alignment portion 113 and a plurality of slits 132 formed in a vertical direction as shown in FIG. (S10) as shown.

Next, a magnet 133 and a plate 134 are stacked on the bottom of the yoke 131 so that the side surface of the yoke 131, the side surface of the magnet 133, and the side surface of the plate 134 are spaced from each other by a predetermined distance, Gt; s20 < / RTI >

12, a voice coil coupling portion 171 for supporting the voice coil 120, a plurality of first extending portions 172 extending from the voice coil coupling portion 171, The first extension 173 extending from the second extension 173 and the frame coupling 174 extending from the second extension 173 of the coupler 170, (S30) of coupling the voice coil 120 to the coil coupling portion 171 as shown in Fig. 13 is performed.

Next, a step (s40) of joining the diaphragm 140 including the opening 141 having an inner diameter larger than the outer diameter of the yoke 131 and the second extending portion 173 as shown in Fig. 14 is performed .

Next, the inner end of the diaphragm 140 and the outer end of the inner edge 150 are joined together, and the outer end of the diaphragm 140 and the inner end of the outer edge 160 are joined to each other as shown in Figs. 15 and 16 Gt; s50 < / RTI >

At this time, steps (s10, s20) for forming the frame assembly and steps (s30, s40, s50) for forming the diaphragm assembly may be performed separately or separately.

Finally, step (s60) of forming the speaker assembly 100 as shown in FIG. 1 by combining the frame assembly and the diaphragm assembly so that the first extensions 172 pass through the slits 132 of the yoke 131, .

5, 6, and 7, the plate 134 has a first stepped portion 135 having an inner height higher than the outer height so as to be aligned with the inner diameter of the inner edge 150, And step s60 of engaging the frame assembly with the diaphragm assembly is preferably to align the inner end of the inner edge 150 with the first step 135 to engage the frame assembly and the diaphragm assembly Do.

Hereinafter, the vibration simulation of the conventional speaker assembly 20 shown in Figs. 22 and 23 and the vibration simulation results of the speaker assembly 100 according to the embodiment of the present invention will be described with reference to Figs. 17 to 20. Fig. The conventional speaker assembly 20 used in the simulation has a circular planar shape with a diameter of 70 mm and a thickness of 21 mm. The speaker assembly 100 according to the embodiment of the present invention used in the simulation has a rectangular planar shape of 80 mm in width and 80 mm in length and 8 mm in thickness. That is, the speaker assembly 100 according to the embodiment of the present invention can be realized at a height of only 38% compared to the conventional speaker assembly 20 of the same specification.

Fig. 17 shows the frequencies at which the vibration mode of the conventional speaker assembly 20 occurs, and Fig. 18 shows the split vibration of the conventional speaker assembly 20 diaphragm 140 observed at 264.08 Hz. Figure 19 illustrates the frequencies at which the vibration mode of the speaker assembly 100 occurs in accordance with an embodiment of the present invention and Figure 20 shows the frequency of the speaker assembly 100 diaphragm 140 according to an embodiment of the present invention observed at 294.44 Hz. Shown is the split vibration.

17 and 19, it is confirmed that the frequency at which the vibration mode is generated is very low, and the vibration plate 140 of the speaker assembly 100 according to the embodiment of the present invention is confirmed to have a frequency It is confirmed that the degree of deformation of the diaphragm 140 is relatively small in spite of the occurrence of the vibration mode in the loudspeaker diaphragm 140 according to the embodiment of the present invention.

The outer side of the diaphragm 140 is resiliently supported by the outer edge 160 as compared with the structure of the conventional speaker assembly 20 in which the bobbin is elastically supported by the corrugation damper and the diaphragm is elastically supported only by the outer edge, It is confirmed that the structure of the speaker assembly 100 according to the embodiment of the present invention in which the inner side of the inner edge 140 is resiliently supported by the inner edge 150 is less affected by the split vibration.

Although the speaker assembly of the present invention has been described with reference to a television component speaker as an example, the speaker assembly according to the present invention can be used in various electronic devices such as a smart phone, a tablet PC, and a notebook PC as well as a TV.

The detailed description of the invention in this specification is intended to illustrate the preferred embodiments, and the invention is not limited to these embodiments. It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims. .

100: speaker device 110: frame
120: voice coil 140: diaphragm
150: inner edge 160: outer edge
170: Coupler

Claims (20)

delete delete delete delete delete delete frame;
Voice coil;
A magnetic circuit comprising a yoke, a magnet, and a plate fixed to the frame and supplying a magnetic force to the voice coil, the yoke including a plurality of slits formed in a vertical direction;
A diaphragm having an opening at its center so as to expose an upper surface of the magnetic circuit;
An inner edge fixed to the inner end of the diaphragm and an inner edge fixed to the upper surface of the plate to elastically support the diaphragm;
An inner edge fixed to the outer edge of the diaphragm and an outer edge fixed to the frame to elastically support the diaphragm; And
A voice coil coupling portion electrically connected to the voice coil and supporting the voice coil, a plurality of first extensions extending from the voice coil coupling portion and passing through the slits of the yoke, A plurality of second extending portions extending from the first extending portions and coupled to the diaphragm; and a frame coupling portion extending from the second extending portions and coupled to the frame. 8. The method of claim 7,
Wherein the first extension is formed to have an average width that is wider than an average width of the second extension. 8. The method of claim 7,
Wherein the coupler is divided into a first electrode portion and a second electrode portion so as to be physically separated from each other and to receive audio signals of different polarities and to receive the audio signals at each end of the voice coil. 10. The method of claim 9,
And a part of the first extensions is divided into the first electrode part and the second electrode part. 8. The method of claim 7,
Wherein the voice coil coupling portion is formed in a circular shape having an inner diameter larger than the outer diameter of the plate and having an outer diameter smaller than the inner diameter of the yoke,
Wherein the first extending portions are formed to extend outward at intervals of 90 degrees in the voice coil coupling portion,
The coupler is connected to an outer end of the first extensions and is formed in a circular shape having an inner diameter larger than the outer diameter of the yoke and coupled with the upper surface of the inner end of the diaphragm via a bottom surface, And an inner edge engaging portion engaging with a bottom surface of the outer end portion,
Wherein the second extending portions are formed to extend outward at intervals of 90 degrees from the inner edge coupling portions so as to be aligned with the first extending portions and are coupled to the upper surface of the diaphragm through the bottom surface,
The coupler further includes an elastic support portion having an inner end connected to an outer end of the second extensions and an outer end connected to the frame engagement portion and positioned between the inner end and the outer end of the outer edge and,
Wherein the frame engaging portion engages an upper surface of the outer end of the outer edge through a portion of the bottom surface and engages the upper surface of the frame through another portion of the bottom surface. 12. The method of claim 11,
Wherein the inner edge further comprises a first connection portion connecting the inner end and the outer end in a convex upwardly convex shape, the inner edge being coupled with the upper surface of the plate through the bottom surface of the inner end, And < RTI ID = 0.0 >
The outer edge further includes a second connecting portion connecting the inner end and the outer end in a downwardly convex shape and is coupled with the upper surface of the diaphragm through the bottom surface of the inner end, And engages with a portion of the bottom surface of the frame engaging portion via an upper surface of the outer end. 8. The method of claim 7,
Wherein the plate further comprises a first step on an upper surface, the inner surface of the plate having a height that is greater than an outer height so as to be aligned with an inner diameter of the inner edge. 14. The method of claim 13,
Wherein the frame further includes a second stepped portion at an outer periphery of the frame, the inner step height of which is lower than the outer height so as to be aligned with the outer diameter of the outer edge. 15. The method of claim 14,
The coupler further includes a plurality of second extending portions extending from the first extending portions and coupled to the diaphragm and the frame, and a frame coupling portion extending from the second extending portions to engage with the frame,
Wherein the frame further includes a third stepped portion on an outer periphery of the second stepped portion, the height of the inner side being lower than the height of the outer side so as to be aligned with the outer diameter of the frame engagement portion of the coupler. 14. The method of claim 13,
Wherein the frame further comprises a yoke arrangement for aligning the yokes such that the slits of the yoke and the first extensions of the coupler are aligned. 17. The method of claim 16,
Wherein the yoke arranging portion is an engaging projection for engaging with at least a lower end portion of at least a portion of the slits. 8. The method of claim 7,
The inner edge elastically supports the diaphragm so that the diaphragm is located at a position lower than the height of the uppermost surface of the magnetic circuit in a state where the electric signal is not exposed,
Wherein the outer edge elastically supports the diaphragm so that the diaphragm is located at a position lower than a height of an uppermost surface of the magnetic circuit in a state where the electric signal is not transmitted. Coupling a yoke including a frame including a yoke coupling hole and a yoke alignment portion and a plurality of slits formed in a vertical direction;
Forming a frame assembly by laminating the magnet and the plate on a bottom surface of the yoke so that the side surfaces of the yoke, the side surfaces of the magnet, and the side surfaces of the plate are spaced apart from each other;
A voice coil coupling portion for supporting the voice coil; a plurality of first extending portions extending from the voice coil coupling portion; second extending portions each extending from the first extending portions; Coupling the voice coil to a voice coil coupling portion of a coupler including a frame coupling portion formed to be connected to the voice coil coupling portion;
Coupling the diaphragm with the diaphragm including an opening having an inner diameter greater than the outer diameter of the yoke;
Coupling an inner end of the diaphragm to an outer end of the inner edge and coupling an outer end of the diaphragm to an inner end of the outer edge to form a diaphragm assembly; And
And coupling the frame assembly and the diaphragm assembly such that the first extensions penetrate the slit of the yoke. 20. The method of claim 19,
Wherein the plate further includes a first step on an upper surface of the plate so that an inner side thereof is higher than an outer side thereof so as to be aligned with an inner diameter of the inner edge,
Wherein engaging the frame assembly with the diaphragm assembly aligns the inner end of the inner edge with the first step to engage the frame assembly and the diaphragm assembly.

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