KR20170129585A - Slim Speaker - Google Patents

Abstract

The present invention relates to a slim speaker. The slim speaker is not influenced by the height (thickness) of a magnetic circuit since a diaphragm and a vibration space of a voice coil are separated, and thus, the slim speaker can be thin. The slim speaker comprises: a diaphragm (40) having a predetermined vibration surface; a connecting part (36) extended in a direction deviating from the vibration surface in the diaphragm; a voice coil (26) fixed to an end of the connecting part, and prepared at a position deviating from the vibration surface; and a magnetic circuit (20) having the voice coil embedded therein. In the magnetic circuit crossing the connecting part, prepared is an incision part (241) for providing a space which allows the connecting part to move in response to a vibration direction of the diaphragm. The magnetic circuit (20) can be prepared at a center-hole part prepared in the center of the diaphragm, or at the outer circumference of the diaphragm.

Description

{Slim Speaker}

More particularly, the present invention relates to a loudspeaker, and more particularly, to a loudspeaker having a vibrating region of a diaphragm separated from a vibrating region of a voice coil as viewed from a vibration direction, To a thin speaker capable of reducing the thickness of the speaker.

2. Description of the Related Art In recent years, as display devices such as TVs have been made slimmer, many technical problems have been raised about sliming speakers that implement sound. As a result, a slimening of the speaker, which is installed at the lower end of the display device so that the sound output direction is downward, is progressing, and a slimmer speaker installed on the rear surface of the display for outputting sound to the rear is proceeding.

It is a problem to develop a track type or elliptical speaker structure in which the sound output direction is directed downward as the speaker has a long axis and a short axis in which the vibration planes are orthogonal to each other while the slimening of the speaker whose sound output direction is backward, So-called thin speaker structure capable of reducing the depth of the speaker according to the vibration direction of the speaker.

To reduce the depth of the speaker, the existing approach is to make the magnetic circuit thinner and flat. However, if the magnetic circuit is made thinner and flattened, the amount of windings of the voice coil is reduced so that the impedance and the output of the speaker are lowered. In order to increase the output, it is necessary to use a magnet having a strong magnetic force, which is directly related to an increase in cost.

In order to overcome such a problem, conventionally, it has been sought to increase the diameter of the bobbin to which the voice coil is wound and to enlarge the diameter of the magnet correspondingly, but this structure causes the component cost to increase. Further, as the diameter of the bobbin becomes larger, the central portion of the diaphragm, to which the voice coil is fixed, has to be weak in rigidity. Therefore, there arises a problem that a structure for reinforcing the central portion rigidity of the diaphragm must be further applied.

Due to these structural limitations, conventional thin speakers have a thickness of about 10 to 15 mm, making it difficult to manufacture.

Patent Registration No. 1197917

SUMMARY OF THE INVENTION It is an object of the present invention to provide a speaker device capable of separating a vibration region of a diaphragm from a vibration region of a voice coil when viewed from a vibration direction, do.

Another object of the present invention is to provide a speaker device in which a vibrating region of a diaphragm is separated from a magnetic circuit to have a thin structure.

The present invention also provides a speaker device capable of simplifying the structure by using a conductive metal as a coupler for connecting the voice coil and the diaphragm to each other in a direction perpendicular to the thickness direction of the speaker as an electrical connection path between the voice coil and the terminal And to provide the above-mentioned objects.

Another object of the present invention is to provide a speaker device in which a diaphragm assembly portion and a magnetic circuit portion are modularized and installed directly on the enclosure without a separate frame.

Another object of the present invention is to provide a display device having a slim structure by providing the above-mentioned thin speaker device.

According to an aspect of the present invention, there is provided a vibration plate comprising: a vibration plate having a predetermined vibration surface; A connection part (36) extending in a direction deviating from the vibration surface in the diaphragm; A voice coil (26) fixed to an end of the connection portion and disposed at a position deviated from the vibration surface; And a magnetic circuit (20) incorporating the voice coil, wherein the magnetic circuit portion intersecting the connection portion is provided with a cut-out portion for providing a space allowing the connection portion to move in correspondence to a vibration direction of the diaphragm 241).

The speaker device further includes a first end portion 32 fixed to the diaphragm 40, a second end portion 34 fixed to the voice coil, and a coupler 30 having the connection portion, The connecting portion may be a structure connecting the first end and the second end.

The coupler may include a conductive material, the coupler may be electrically coupled to the voice coil, and the coupler may be electrically connected to the terminal.

Wherein the first end of the coupler is fixed to a first edge of the diaphragm facing the connection portion and the coupler includes an extension portion 38 extending in a direction opposite to the connection portion with respect to the first end portion 32, As shown in FIG.

The coupler further includes a third end (39) fixed along a second edge opposite the first edge of the diaphragm, and the extension can be connected to the third end.

The extension may extend further outward than the diaphragm, and the third end may be fixed to the outer wall of the frame.

An edge may be provided between the diaphragm and the magnetic circuit, one end of which is fixed to the diaphragm and the other end is fixed to the frame 10 fixing the magnetic circuit or the magnetic circuit.

The magnetic circuit comprises: a magnet (22); A plate (23) attached to a first pole of the magnet (22); And a yoke (24) attached to a second pole of the magnet (22), the end of which is disposed adjacent to an end of the plate, the cutout being provided in the yoke.

The space between the end of the yoke and the end of the plate may be open towards the rear of the speaker device.

The speaker device may further include a cover (60) covering at least a space between an end of the yoke and an end of the plate.

Alternatively, the space between the end of the yoke and the end of the plate may be open towards the front of the speaker device.

The diaphragm may have an annular shape having a center hole (42), and the magnetic circuit may be disposed inside the center hole.

The outer periphery of the diaphragm may be substantially rectangular, and the center hole may be circular.

Alternatively, the magnetic circuit may be spaced from the outer periphery of the diaphragm and surround the periphery of the diaphragm.

Wherein the magnetic circuit comprises: an annular magnet (22); An annular plate (23) attached to a first pole of said magnet (22); And an annular yoke (24) attached to a second pole of the calcareous material (22) and having an end disposed further inside than the inner end of the plate and adjacent the inner end of the plate, the cutout It can be arranged in York.

The frame 10 to which the diaphragm 40 and the magnetic circuit 20 are fixed may be an enclosure.

Further, the present invention provides a display device in which the speaker device is installed.

According to the present invention, by providing a magnetic circuit at a position deviated from the vibration plane of the diaphragm, the amplitude range of the vibration region of the diaphragm and the height range of the height portion of the magnetic circuit are set in the same height range, It is possible to reduce the thickness of the speaker and realize a slim speaker which is assured of output.

According to the present invention, the magnetic circuit and the diaphragm can be placed on the same line while minimizing the magnetic loss of the magnetic circuit by connecting the voice coil incorporated in the magnetic circuit and the diaphragm with a narrow coupler and minimizing the area of the cut- , And a slim speaker can be implemented that ensures output.

Further, according to the present invention, the coupler applied to implement the slim speaker can be utilized as an electrical connection path between the voice coil and the terminal, thereby simplifying the internal structure and realizing a slim speaker with a reduced manufacturing cost.

Further, according to the present invention, a coupler applied to realize a slim speaker can be utilized as a reinforcing structure of a diaphragm, thereby realizing a slim speaker having a very high rigidity of the diaphragm.

According to the present invention, the diaphragm assembly and the magnetic circuit can be modularized and assembled easily, and the speaker assembly can be mounted directly on the enclosure to eliminate the frame and make the speaker device slimmer.

According to the speaker device of the present invention, a thin display device provided with a speaker can be manufactured.

The above and other objects, features and advantages of the present invention will be more apparent from the following detailed description taken in conjunction with the accompanying drawings, in which: FIG.

1 is a perspective view showing a housing in which a slim type speaker having a long axis and a short axis with a vibration plane orthogonal to each other is provided on the bottom surface and a thin speaker is provided on the rear surface,
2 is a plan view of a thin speaker as a first embodiment according to the present invention,
Figure 3 is a side view of the speaker of Figure 2,
Fig. 4 is a bottom view of the speaker of Fig. 2,
Fig. 5 is an exploded perspective view of the speaker of Fig. 2,
6 is an exploded perspective view showing the frame of the speaker of Fig. 2,
Fig. 7 is a plan view of the coupler of the speaker of Fig. 2,
FIG. 8 is a perspective view showing a state in which the coupler of FIG. 7 is installed in the frame of FIG. 6,
FIG. 9 is a top plan view showing a state where the voice coil is coupled to the diaphragm assembly of the speaker of FIG. 2;
FIG. 10 is a bottom perspective view of FIG. 9,
11 is a side sectional view showing an assembly process of the speaker of FIG. 2,
FIG. 12 is a side sectional view showing a state in which the speaker of FIG. 11 is assembled,
FIG. 13 is a side sectional view showing a state in which edges are omitted in FIG. 12,
14 is a side sectional view of the diaphragm, the coupler, and the voice coil of Fig. 13, which are displaced forward; Fig.
FIG. 15 is a side sectional view of the diaphragm, the coupler, and the voice coil of FIG. 13,
16 is a side sectional view of a thin speaker as a second embodiment according to the present invention,
17 is a perspective view of a thin speaker as a third embodiment according to the present invention,
Fig. 18 is a cross-sectional perspective view of the speaker of Fig. 17,
19 is an exploded perspective view of the speaker of Fig. 17,
Fig. 20 is a partially assembled perspective view of the speaker of Fig. 19,
FIG. 21 is a side sectional view of a partially assembled state seen in the AA direction of FIG. 20,
22 is a side sectional view showing the fully assembled state of Fig. 21,
23 is a perspective view of a thin speaker as a fourth embodiment according to the present invention,
24 is a cross-sectional perspective view of the speaker of FIG. 23,
25 is an exploded perspective view of the speaker of FIG. 23,
Fig. 26 is a partially assembled perspective view of the speaker of Fig. 25,
Fig. 27 is a side sectional view showing a partially assembled state of the speaker of Fig. 26,
28 is a side sectional view showing the fully assembled state of Fig. 27,
29 is a perspective view showing a modified example of the frame of the fourth embodiment,
30 is a perspective view showing a modified example of the yoke of the fourth embodiment,
31 is a sectional perspective view showing a modified example of the edge of the fourth embodiment,
32 is a perspective view of a thin speaker as a fifth embodiment according to the present invention,
33 is a cross-sectional perspective view of the speaker of Fig. 32,
Fig. 34 is an exploded perspective view of the speaker of Fig. 32,
Fig. 35 is a partially assembled perspective view of the speaker of Fig. 34,
Fig. 36 is a side sectional view of a partially assembled state seen in the direction of BB in Fig. 35,
37 is a side sectional view showing the fully assembled state of Fig. 36, and Fig.
38 is a perspective view of a coupler applied to the speaker of the fifth embodiment.

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

It is to be understood that the present invention is not limited to the disclosed embodiments, but may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, It is provided to inform.

1 is a perspective view showing a housing in which a slim type speaker having a long axis and a short axis with a vibration plane orthogonal is provided on the bottom and a thin speaker is provided on the rear side. In the lower portion of the rear surface of the display device, the illustrated enclosure is provided. In the display device, there is provided a fastening portion A of a slim speaker including a vibration surface having a long axis and a short axis orthogonal to the downward facing surface, And a fastening portion W of a thin speaker is provided on the surface. As a speaker including a vibration surface having a major axis and a minor axis, a slim type speaker device to which the techniques of the applicants' patent applications Nos. 1560365, 1564896, and / or 1560363 are applied can be applied. As a thin speaker, a speaker device to which the present invention is applied can be applied.

The thickness T1 of the enclosure portion provided with the fastening portion A of the slim type speaker can be determined by the length of the short axis of the slim type speaker and the thickness T2 of the enclosure portion provided with the fastening portion W of the thin speaker can be determined Can be determined by the thickness. The thickness T2 of the enclosure portion provided with the fastening portion W of the thin speaker is smaller than the thickness T2 of the fastening portion A of the slim speaker as shown in Fig. It is inevitable to use an enclosure that is thicker than the thickness T1 of the enclosure portion provided with the recesses. However, when the thin speaker according to the present invention is applied, it is possible to make the thicknesses (T1, T2) of the two portions of the enclosure to be equally slim.

[Overall structure of thin speaker]

The overall structure of a thin speaker as a first embodiment according to the present invention will now be described with reference to the drawings. Fig. 2 is a plan view of a thin speaker according to a first embodiment of the present invention, Fig. 3 is a side view of the speaker of Fig. 2, Fig. 4 is a bottom view of the speaker of Fig. 2, and Fig. 5 is an exploded perspective view of the speaker of Fig.

Hereinafter, for convenience of explanation, a speaker having a circular (circular) vibration surface and a circular magnetic circuit will be described as an example. It should be appreciated that the present invention is applicable to a speaker structure having other shapes such as a square shape, a track shape, and an oval shape , Which will be readily appreciated by reference to the following description.

Referring to FIG. 2, the frame 10 of the speaker of the present invention has a very low height and a hollow circular or circular pipe shape. The four outer corners thereof are provided with screw holes (not shown) Is provided. A magnetic circuit 20 is provided at the center of the frame 10 and an annular diaphragm 40 is provided between the outer periphery of the frame 10 and the outer periphery of the magnetic circuit 20. The magnetic circuit is fixed to the magnetic circuit receiving portion 12 provided at the center of the frame 10. A second edge 52 is provided between the inner edge of the annular diaphragm 40 and the magnetic circuit 20 to provide a damping force to the diaphragm 40 while permitting front and rear vibrations of the diaphragm, And prevents the leakage of air to the gap portion between the first and second electrodes 40 and 40, thereby shielding the back radiation noise, which has the opposite phase, and covers the dust or the like so as not to enter the gap. A first edge 51 is provided between the outer edge of the diaphragm 40 and the outer edge of the frame 10 to provide a damping force to the diaphragm while permitting front and rear vibrations of the diaphragm 40, (10) so as to prevent dust or the like from entering the gap portion.

3, the height of the upper end of the frame 10 and the height of the upper end of the magnetic circuit 20 coincide with each other. That is, in order to realize a thin speaker device, in the present invention, the height of the top end of the magnetic circuit 20, which defines the forward and backward displacement of the voice coil to be described later, is made coincident with the height of the top end of the frame 10, And the front and rear displacements of the coils are secured to the maximum.

Referring to FIG. 4, a terminal unit 18 is provided at one side of the bottom surface of the loudspeaker apparatus of the present invention, in which a terminal for supplying power to the voice coil of the speaker is installed. In addition, a cover 60 is provided at the center of the bottom of the speaker device so as to prevent the open portion of the magnetic circuit 20 installed at the center of the frame 10 from being exposed at the bottom. The cover 60 does not have to support the overall strength of the speaker device but needs only to have a thickness enough to cover the open portion of the magnetic circuit 20 so as not to be exposed to the outside. A thin metal, or the like, and may be injection-molded into a frame 10 made of a synthetic resin. However, thinning the thickness of the cover 60 based on the above fact is only a minor technical consideration, and thinning the thickness of the cover 60 further widens the lower limit of the displacement of the voice coil, which will be described later It should be noted.

Referring to FIG. 5, a speaker device according to an embodiment of the present invention includes a diaphragm assembly 90 and a magnetic circuit 20.

The diaphragm assembly 90 includes an annular flat diaphragm 40, a first edge 51 attached to the outer circumferential surface of the diaphragm, a second edge 52 attached to the inner circumferential surface of the diaphragm, And a coupler (30).

In the embodiment of the present invention, the diaphragm 40 is illustrated as a flat shape, but it is needless to say that the diaphragm 40 may be provided with a bent portion to reinforce the rigidity. A center hole 42 is formed at the center of the diaphragm. The magnetic circuit 20 is positioned within the center hole 42 while maintaining a slight gap with the inner periphery of the diaphragm 40.

The magnetic circuit includes a magnet 22 for supplying a magnetic force, a yoke 24 attached to a first pole of the magnet, for example, an N pole portion, and a plate 23 attached to a second pole of the magnet, And a voice coil 26 positioned so as to be movable up and down (in the drawing) in a space between the yoke 24 and the plate 23.

As the magnet 22, neodymium (Nd), ferrite, or the like may be used, and the magnet 22 may be formed into a thin circular column like a coin. Such a material, a dimension and a shape can be determined in consideration of the strength of a magnetic field required for driving the speaker. The plate 23 is a passage through which a magnetic field passes and its diameter is slightly larger than the magnet 22. The yoke 24 has a flat portion and a side wall portion perpendicular to the flat portion. The inner diameter of the side wall portion of the yoke 24 is larger than the diameter of the outer periphery of the plate 23, , The flow of magnetic force is concentrated through this gap portion. As mentioned above, these shapes do not necessarily have to be circular in the present invention.

The voice coil 26 is spaced apart from the inner periphery of the side wall of the yoke 24 and the outer periphery of the plate 23. When a current flows in the coil, the voice coil 26 receives an external force by a magnetic field formed intensively between the yoke and the plate according to the direction and magnitude of the current, In the drawing) by a predetermined displacement. The upper end of the voice coil 26 is fixed to the coupler 30 described above.

A plurality of cutouts 241 are formed in the side walls of the yoke 24 in the vertical direction. The cutouts 241 are radially spaced apart from the center of the yoke 24. The number of cutouts 241 may be set to the number corresponding to the Fibonacci series, which is a number that can provide stability to the coupler 30 to be described later. In the present invention, three incisions are formed.

[Position relationship between frame and coupler]

Fig. 6 is an exploded perspective view showing the frame of the speaker of Fig. 2, Fig. 7 is a plan view of the coupler of the speaker of Fig. 2, and Fig. 8 is a perspective view of the frame of Fig. 6 with the coupler of Fig.

The bottom surface of the frame 10 is open to a predetermined area for regulating discharge and pressure repulsion, i.e., compliance.

At the outer end of the frame, the first sidewall 14 extends upward from the bottom of the frame. The first side wall separates and / or isolates the inner space of the frame from the outer space of the frame, and defines the outer perimeter of the frame. The first side wall 14 has a stepped portion to precisely regulate a position at which the outer edge of the first edge 51 is provided.

The magnetic circuit accommodating portion 12 is provided at the center of the frame 10 and the magnetic circuit accommodating portion is open at both the top and bottom. In the embodiment of the present invention, the lower portion of the magnetic circuit is covered with the cover 60, which is made much thinner than the frame 10, thereby preventing foreign substances from entering from the outside and ensuring the movement range of the voice coil to the maximum Which is described above. When the cover is provided, the bottom surface of the cover 60 and the bottom surface of the frame 10 are made to coincide with each other, thereby further reducing the thickness of the speaker device.

The second side wall 16 extends upward from the bottom surface of the frame 10 around the magnetic circuit receiving portion 12. The inner side of the second side wall 16 faces the outer surface of the magnetic circuit 20, particularly the yoke 24, and fixes the position of the yoke 24. In addition, the inner bottom of the second sidewall 16 has a step so that the installation depth of the yoke 24 can be regulated.

The second side wall 16 is also provided with a cutout 161 in the vertical direction, which corresponds to the position of the cutout 241 provided in the yoke of the magnetic circuit. Therefore, when the yoke 24 abuts against the inner side of the second side wall 16, the cut-out portions 161 and 241 come into coincidence with each other and face the magnetic circuit accommodating portion 12 through the cut- The spaces between the two side walls 16 and the first side wall 14 are communicated with each other.

7, the coupler 30 of the present invention includes a first end 32 fixed to the inner edge of the diaphragm 40, a second end 32 extending in the direction in which the magnetic circuit is located, A connection portion 36 and a second end portion 34 fixed to the upper end of the bobbin of the voice coil 26. The first end portion 32 may be circular or arched corresponding to the inner edge shape of the diaphragm 40 and the second end portion 34 fixed to the voice coil 26 may also be a circular or arc- have.

The diameter of the second end 34 is smaller than the first end 32 and they are connected to each other by a connecting portion 36. The number of the connection portions 36 corresponds to the number of the cutouts 161 and 241. In the present invention, three connection portions 36 are provided at intervals of 120 degrees. The coupler 30 may be divided into a plurality of portions based on the respective connecting portions 36. For example, the coupler 30 may be connected to the coupler 30 through a thin neck portion at the initial stage of manufacture, A method of removing the neck portion after attachment may be applied.

On the other hand, at the opposite end of the second end with respect to the first end, a third end 39 is provided, and an extension 38 extends from the second end toward the third end to define a first end and a third end Can be connected to each other. The third end 39 may be provided at a position corresponding to the outer edge of the diaphragm and may have a circular or arcuate shape corresponding to the shape of the outer edge of the diaphragm. The extension portion 38 is formed in a shape that is arranged on the same straight line as the connection portion 36.

8, the connecting portion 36 of the coupler 30 extends across the cut-out portions 161 and 241 and the first end portion 32 is connected to the outer side of the magnetic circuit 20 and the second side wall 16 And the second end 34 is located inside the second sidewall 16 and is embedded in the magnetic circuit 20.

The coupler 30 of the coupler 30 is movable in the up and down direction along the cutout so that the coupler 30 can move along the frame 10 and the magnetic circuit 20 In the vertical direction.

The coupler 30 is made of a material such as copper (Cu), aluminum (Al), magnesium (Mg), or the like that is not attracted by the magnetic force generated by the magnet 22 of the magnetic circuit 20, Or an alloy thereof. In addition, since the diaphragm 40 and the voice coil 26 must behave integrally like a rigid body, it is preferable that the coupler 30 connecting the diaphragm 40 and the voice coil 26 has a rigid material or a cross section. For example, the high-rigidity section may be applied to the portion of the coupler that is expected to be the most structurally weak in each portion, that is, the connection portion 36, or the like.

A soldering portion S to which a coil of the voice coil is to be soldered is provided in the vicinity of the second end portion 34 and is provided in the form of a via hole or a groove so that the soldering operation can be smoothly performed. In the embodiment of the present invention, it is exemplified that a brazed portion is provided at the intersection of the first end and the connecting portion. Also, soldering portions S for electrically connecting the terminals and the coupler may be provided in other portions of the coupler close to the positions where the terminals are installed. Although it is illustrated in the embodiment of the present invention that the soldering portion is provided at the third end portion 39, it is needless to say that the soldering portion may be provided at another portion in consideration of the distance from the terminal and convenience of manufacturing.

[Structure of diaphragm assembly]

FIG. 9 is a top perspective view showing a state where a voice coil is coupled to a diaphragm assembly of the speaker of FIG. 2, and FIG. 10 is a bottom perspective view of FIG.

The diaphragm assembly 90 is formed by assembling related parts based on the diaphragm 40 constituting the vibration surface. A center hole 42 is provided at the center of the annular diaphragm 40 and a second edge 52 is attached to the upper surface of the inner edge of the diaphragm 40. The flat outer end is fixed to the upper surface of the inner edge of the diaphragm 40 and the flat inner end of the second edge 52 is fixed to the second side wall 16 (16) of the frame 10 in the form of a ring having an outer end and an inner end, And / or on the yoke 24 of the magnetic circuit 20 provided inside the second side wall. In the embodiment of the present invention, the inner edge of the second edge 52 is fixed to the upper end of the second sidewall of the frame. However, the fixing position of the inner edge of the second edge is not necessarily limited to this. The inner edge of the second edge 52 is provided with a protruding portion capable of covering the cutout portion 161 of the second side wall 16 and the cutout portion 241 of the yoke 24, The number corresponds to the position and number of incisions.

In the second edge 52, the inner end is provided at a position higher than the outer end, and these ends are connected to each other by a curved surface. The inner edge of the second edge is attached to the frame 10 and fixed in position, but the outer edge of the second edge is attached to the diaphragm having a stroke that vibrates back and forth, and oscillates back and forth together with the diaphragm. Therefore, when the diaphragm is in the position, the outer edge of the second edge is pushed backward from the inner edge, and when the diaphragm is maximally forward, the outer edge of the second edge is at the height of the inner edge, The vibration displacement does not affect the thickness of the speaker.

The first edge 50 is coupled to the outer periphery of the diaphragm 40. The first edge also has an annular shape, and the inner end of the first edge engages the lower periphery of the diaphragm (of course, the inner end of the first edge may engage the upper surface of the outer periphery of the diaphragm). The outer edge of the first edge is coupled to the step provided on the first sidewall 14 of the frame to enable precise alignment of the center of the diaphragm with respect to the speaker. A convex curved surface is provided between the outer end and the outer end of the first edge to provide flexibility corresponding to the vibration range of the diaphragm.

A coupler (30) is integrally fixed to the bottom surface of the diaphragm (40). The first end portion 32 of the coupler is fixed to the bottom surface of the inner edge of the diaphragm 40 and the third end portion 39 is fixed to the bottom surface of the outer edge of the diaphragm. And is fixed to the bottom surface of the third end portion 39 of the coupler 30. The extension portion 38 connecting the first end portion 32 and the third end portion 39 is also fixed to the bottom surface of the diaphragm so that the first end portion, the extending portion and the third end portion of the coupler 30 are in close contact with the bottom surface of the diaphragm . The diaphragm of the speaker device of the present invention has a very high rigidity by attaching the first end, the third end and the extension of the coupler to the inner edge and the outer edge of the diaphragm respectively and the middle area thereof, have. Also, as described above, if the coupler having such a structure is made of a conductive material, the voice coil of the magnetic circuit located near the center hole of the diaphragm can be electrically connected to the terminal located near the outer edge of the diaphragm, It is possible to realize a very simple connection structure, which leads to an improvement in productivity.

The coupler 36 extends inwardly inwardly of the first end of the coupler. The inner end of the coupler has a second end, and the bobbin of the voice coil 26 is attached and fixed to the bottom of the second end. The voice coil is located in the center hole 42 of the diaphragm, which is located outside the area covered by the diaphragm, and is spaced apart from the diaphragm by the length of the connecting portion 36 extending from the inner end of the diaphragm. The voice coil 26 and the diaphragm 40 are fixed to the coupler 30 and the coupler 30 is also rigid.

[Assembly structure of speaker device]

FIG. 11 is a side sectional view showing the assembly process of the speaker of FIG. 2, and FIG. 12 is a side sectional view of the speaker of FIG. 11 assembled.

11, the cover 60 fixed to the central bottom surface of the frame 10 is insert-injected together with the frame 10 (STEP 1).

Next, the diaphragm 40, the coupler 30, the voice coil 26, and the first edge 51 provided at the outer edge of the diaphragm 40, which act as one body when the vibration surface of the speaker vibrates, do. Of the preassembled parts, the voice coil 26 is inserted into the magnetic circuit receiving portion 12 defined by the second side wall of the frame 10, and the connecting portion 34 of the coupler 30 is inserted into the magnetic circuit receiving portion 12 defined by the second side wall of the frame 10, The diaphragm is received in the space inside the frame between the second sidewall 16 and the first sidewall 14 while the diaphragm is received in the space between the first sidewall 16 and the first sidewall 14, The outer end of the first side wall 51 is fixed to the step of the first side wall 14 (STEP 2).

Then, the magnet 22, the plate 23 and the yoke 24 of the pre-assembled magnetic circuit are inserted and fixed in the magnetic circuit receiving portion provided at the center of the frame. The magnetic circuit (20) sandwiched between the yoke (24) and the yoke (24) is provided with a plate (23) at the bottom and a yoke at the top, And the cutout portion 161 of the second side wall 16 are aligned with each other so that the coupling portion of the coupler is inserted into the cutout portion 241 of the yoke 24, (STEP 3).

In the case of the second edge 52, in the second step (STEP 2), when the diaphragm is attached to the frame with the outer end of the second edge attached to the diaphragm in a pre-assembled state, the inner edge of the second edge The method of assembling in a manner of attaching to the upper portion of the second sidewall is most effective. However, in the third step (STEP 3), in order to attach the second edge separately to the inner edge of the diaphragm and the second sidewall of the frame after the third step and to attach the inner edge of the second edge to the inner edge of the second edge A procedure may be considered in which the outer end of the second edge is fixed on the diaphragm after the magnetic circuit is fixed to the frame in a state where the end is attached.

[Vibration range of diaphragm]

13 is a side sectional view showing a state in which an edge is omitted in Fig. 12, Fig. 14 is a side sectional view showing a diaphragm, a coupler and a voice coil displaced forward of Fig. 13, and Fig. Sectional view showing a state in which the voice coil is displaced rearward.

13, the voice coil 26 is disposed between the end portion of the yoke 24 and the end portion of the plate 23 in a state where no vibration occurs, and the upper end of the voice coil 26 And the distance between the lower end of the voice coil 26 and the upper surface of the cover 60 are substantially equal to each other. The vertical movable range of the voice coil 26 corresponds to the interval between the voice coil 26 and the upper plate of the yoke 24 and the interval between the voice coil 26 and the cover 60. [

14 and 15, even if the voice coil 26 moves up and down in the movable range, the diaphragm 40 vibrates in the space between the upper end portion and the lower end portion of the frame 10. That is, according to the speaker structure of the present invention, the thickness of the speaker is determined by the up and down movement range of the voice coil, and the vibration displacement of the diaphragm does not affect the thickness of the speaker. Accordingly, it is possible to further reduce the thickness of the speaker in comparison with the conventional art. In the conventional speaker structure, both the vibration displacement of the diaphragm and the moving range of the voice coil are all reflected in the thickness of the speaker. However, if the diaphragm is disposed at a position deviated from the magnetic circuit as in the present invention, It is possible to reduce the thickness of the speaker. This structure can be achieved by connecting the diaphragm and the voice coil with a connection portion and placing a cutout portion through which the connection portion can pass in a magnetic circuit in which the voice coil is incorporated.

In the present invention, in order to realize a structure in which the voice coil is disposed at a position deviated from the vibration plane, the diaphragm is formed in an annular shape, a center hole is formed in the center of the diaphragm, and a magnetic circuit is formed in the center hole. The structure in which the voice coil is disposed at a position away from the voice coil is not limited thereto. For example, contrary to the embodiment of the present invention, an annular magnetic circuit is constituted at the outermost part of the speaker, an annular voice coil is incorporated in such a magnetic circuit, a circular diaphragm is arranged in the inner area of the annular voice coil , A voice coil is arranged at a position deviated from the vibration plane by connecting an annular voice coil and a diaphragm provided therein with a coupler and placing an incision in the inner periphery of the annular magnetic circuit Of course it is possible.

Also, as explained at the beginning, the shapes of the diaphragm and the magnetic circuit do not necessarily have to be circular, and they are not limited to shapes such as square, track, and oval.

[Second Embodiment]

16 is a side sectional view of a thin speaker as a second embodiment according to the present invention. Hereinafter, the differences of the second embodiment with respect to the first embodiment will be mainly described, and redundant descriptions will be omitted. 16 differs from the above-described embodiment in that the cover 60 covers and covers the upper portion of the magnetic circuit accommodating portion of the frame, and the magnetic circuit 20 is inserted into the magnetic circuit accommodating portion It is fixed at the bottom.

According to this structure, since the frame and the magnetic circuit, which need to be aligned with each other, can be manufactured by insert injection, the assembling process becomes simpler. The cover 60 can also be pre-assembled inside the second edge during the pre-assembly of the vibration plate 40, the coupler 30, the voice coil 26, the first edge 51 and the second edge 52 (STEP 1) in which a magnetic circuit is pre-assembled and an insert is injected integrally with the frame, and a second step (STEP 1) in which the vibration plate 40, the coupler 30, the voice coil 26, the first edge 51, Since the assembly can be performed through the second step (STEP 2) in which the edge 52 and the cover are pre-assembled and fixed to the frame, the assembling process is further simplified.

[Third Embodiment]

17 to 22 show a general structure of a thin speaker as a third embodiment according to the present invention. Hereinafter, differences from the first and second embodiments will be mainly described, and redundant description of the structure and effects will be omitted.

In contrast to the first and third embodiments, it can be seen that there is a difference in the shape of the diaphragm 40 and the frame 10. Referring to FIG. 17, the frame of the third embodiment has a square shape in which vertex portions are round-processed, and the diaphragm 40 also has a square shape rounded corresponding to the shape of such a frame. On the other hand, the center hole 42 of the diaphragm 40 is circular.

The magnetic circuit 20 has a generally circular shape and is fixed to a magnetic circuit accommodating portion provided at the center of the frame 10. The shape and position of the magnetic circuit 20 are the same as the circular center hole 42 of the diaphragm 40 Respectively. A second edge 52 is provided between the circular inner edge of the annular diaphragm 40 and the magnetic circuit 20. A first edge 52 is formed between the outer edge of the diaphragm 40 and the outer edge of the frame 10, 51 are installed.

Referring to FIG. 19, a speaker device according to an embodiment of the present invention includes a diaphragm assembly 90 and a magnetic circuit 20.

First, the diaphragm assembly 90 includes a diaphragm 40 having a flat plate shape, a first edge 51 attached to the outer peripheral surface of the diaphragm, a second edge 52 attached to the inner peripheral surface of the diaphragm, 30). The magnetic circuit 20 is positioned within the center hole 42 with a slight gap from the inner periphery of the center hole 42 of the diaphragm 40. [

The magnetic circuit includes a magnet 22 for supplying a magnetic force, a yoke 24 attached to a first pole of the magnet, for example, an N pole portion, and a plate 23 attached to a second pole of the magnet, And a voice coil 26 positioned so as to be movable up and down (in the drawing) in a space between the yoke 24 and the plate 23.

The magnet 22 is made in the form of a thin circular column like a coin, and the plate 23 is placed on top of the magnet 22. At the upper portion of the plate 23, an inner circumferential surface of a second edge 52, which will be described later, is seated and a step is formed so as to be aligned. The diameter of the plate 23 can be determined in consideration of the distance from the yoke 24, and is slightly larger than the magnet 22. The yoke 24 has a structure such as a circular bowl having a flat portion attached to the lower portion of the magnet 22 and a side wall portion vertically upwardly provided at an end portion of the flat portion. The diameter of the inner circumference of the side wall portion of the yoke 24 is Is larger than the diameter of the outer periphery of the plate (23) and maintains a constant gap, and the flow of magnetic force is concentrated through this gap portion.

The portion of the yoke 24 may be inserted into the frame 10 and integrally fixed to the frame. The magnet 22 and the plate 23 are assembled together with the yoke 24 in a state where the magnet 22 and the plate 23 are assembled integrally with the yoke 24, It is easier to assemble by injection. However, the manufacturing method is not necessarily limited to such an insert injection method.

The voice coil 26 is located at the gap portion, spaced apart from the inner periphery of the side wall portion of the yoke 24 and the outer periphery of the plate 23. And the upper end of the voice coil 26 is fixed to the second end 34 of the coupler 30. [

A plurality of cutouts 241 are formed in the side walls of the yoke 24 in the vertical direction. The cutouts 241 are radially spaced apart from the center of the yoke 24. In the third embodiment, it is exemplified that four cut-out portions 241 are provided at intervals of 90 degrees.

Upward protruding jaws 15 are provided in the vicinity of four vertexes outside the frame 10 to regulate the position at which the outer edge of the first edge 51 is provided. A magnetic circuit accommodating portion 12 is provided at the center of the frame 10, and the yoke 24 is seated and fixed to the magnetic circuit accommodating portion. The lower jaw 17 is extended upward from the bottom surface of the frame 10 in order to further secure a fixing force to the yoke 24 and regulate the position of the yoke around the magnetic circuit accommodating portion 12. [

19 and 20, the coupler 30 of the present invention has a first end 32 fixed to the inner edge of the diaphragm 40, a second end 32 fixed to the inner edge of the diaphragm 40, A connection portion 36 extending inwardly, and a second end portion 34 fixed to the upper end of the bobbin of the voice coil 26. The first end portion 32 may be circular or arcuate corresponding to the inner edge shape of the diaphragm 40 and the second end portion 34 fixed to the voice coil 26 may also be circular or arc- have.

The diameter of the second end 34 is smaller than the first end 32 and they are connected to each other by a connecting portion 36. The positions and the number of the connection portions 36 correspond to the positions and the numbers of the cutouts 241 described above. The connecting portion 36 of the coupler 30 penetrates through the cutout portion 241 so that the first end portion 32 is located outside the magnetic circuit 20 and the second end portion 34 is connected to the magnetic circuit 20 ).

The diaphragm assembly 90 is formed by assembling related parts based on the diaphragm 40 constituting the vibration surface. A center hole 42 is provided at the center of the annular diaphragm 40 and a second edge 52 is attached to the upper surface of the inner edge of the diaphragm 40. The flat outer end is fixed to the upper surface of the inner edge of the diaphragm 40 and the flat inner end of the plate is fixed to the plate 23 of the magnetic circuit 20. The second edge 52 is also formed in a ring shape having an outer end and an inner end, As shown in Fig.

The inner edge and the outer edge of the second edge 52 are connected by curved surfaces. The inner edge of the second edge is attached to the frame 10 to fix its position, and the outer edge of the second edge is attached to the diaphragm and vibrates together with the diaphragm.

The first edge 51 also has an annular shape and the inner edge of the first edge engages the lower portion of the outer periphery of the diaphragm. Of course, the inner edge of the first edge may engage with the upper surface of the outer periphery of the diaphragm. However, when viewed from the perspective of the diaphragm 40, the inner end of the diaphragm is attached and supported on the second edge 52, and the outer end of the diaphragm is attached and supported to the first edge 51, Support is possible.

The outer edge of the first edge is aligned by the jaws 15 of the frame 10 and is engaged on the outer wall of the frame 10 to accurately align the center of the diaphragm with respect to the speaker. The inner edge of the first edge is attached to and supported by the underside of the diaphragm 40 as described above. A convex curved surface is provided between the outer end and the inner end of the first edge to provide flexibility in which the inner end of the first edge can move in response to the vibration of the diaphragm.

The coupler 30 is integrally fixed to the upper surface of the diaphragm 40. The first end 32 of the coupler is fixed to the upper surface of the inner edge of the diaphragm 40 and the outer end of the second edge 52 is fixed to the upper surface of the first end 32 of the coupler 30 .

The coupler 36 extends inwardly inwardly of the first end of the coupler. The inner end of the coupler has a second end, and the bobbin of the voice coil 26 is attached and fixed to the bottom of the second end. The voice coil is located in the center hole 42 of the diaphragm, which is located outside the area covered by the diaphragm, and is spaced apart from the diaphragm by the length of the connecting portion 36 extending from the inner end of the diaphragm. The voice coil 26 and the diaphragm 40 are fixed to the coupler 30 and the coupler 30 is also rigid.

When the speaker of the third embodiment is compared with the first embodiment, the diaphragm 40 of the speaker of the third embodiment has a square shape as a whole and the center hole 42 has a circular shape, And this leads to an output rise of the speaker.

Also, when compared with the first embodiment, the third embodiment can simplify the assembly process of the speaker. 21, the frame 10 and the yoke 24, the magnet 22 and the plate 23 are partially assembled through an insert injection process or the like, and the diaphragm 40 and the voice coil 26 The inner edge of the first edge 51 is joined to the outer periphery of the diaphragm 40 and the outer edge of the second edge 52 is joined to the inner periphery of the diaphragm 40 21), the outer periphery of the first edge 51 is coupled onto the outer wall of the frame 10, and the inner periphery of the second edge 52 is joined to the step on the upper portion of the plate 23 (STEP 3; 22), the assembly can be completed. Needless to say, such an assembling procedure and a method can be changed as needed.

[Fourth Embodiment]

23 to 31 show the overall structure of a thin speaker as a fourth embodiment according to the present invention. Hereinafter, differences from the fourth embodiment will be mainly described in comparison with the above-described embodiments, and description of overlapping portions will be omitted.

First, a fourth embodiment will be described with reference to FIGS. 23 to 28. FIG. It can be seen that the position and the shape of the magnetic circuit 20 are different from each other and the difference between the position and the shape of the magnetic circuit 20 causes the diaphragm assembly 90 ) Are also different from each other.

The magnetic circuit 20 is formed in an annular shape, that is, a ring shape, and is provided along the outer edge of the frame 10. The magnetic circuit 20 is composed of an annular horizontal portion and a vertical portion extending upwardly from the inner periphery of the horizontal portion. The vertical portion of the magnetic circuit 20 has a yoke 24 having a plurality of cut- . The cutout portion 241 has a slit shape, which is a space through which the connection portion 36 of the coupler 30, which will be described later, passes. In the fourth embodiment of the present invention, a yoke 24 of a shape in which three slits, that is, cutouts 241 are provided at equal intervals of 120 degrees, is illustrated.

Magnets 22 are stacked on top of the horizontal portion of the yoke. The magnet 22 also has an annular shape, and the inner circumferential surface of the magnet 22 is spaced apart from the outer circumferential surface of the vertical portion of the yoke 24. In the fourth embodiment of the present invention, it is exemplified that the magnets are also divided into three parts at intervals of 120 degrees. However, the shape of the magnet is not limited thereto, and may be a ring shape.

Either the N pole or the S pole of the magnet is provided on the lower portion of the magnet, that is, on the side contacting the horizontal portion of the yoke, and the other is provided on the upper portion of the magnet.

An annular plate 23 is also laminated on the upper portion of the magnet. The plate 23 completely covers the upper surface of the magnet, and the inner circumferential surface of the plate 23 is spaced apart from the outer circumferential surface of the upper portion of the vertical portion of the yoke 24. The inner diameter of the inner peripheral surface of the plate 23 is smaller than the inner diameter of the inner peripheral surface of the magnet 22. [ According to this structure, the magnetic force of the magnet can be transmitted through the plate 23 to the upper outer peripheral surface of the vertical portion of the yoke facing the inner circumferential surface of the plate 23.

The above-described magnetic circuit can be assembled in a manner to be attached to the frame 10, or can be fixed to the frame in an insert injection manner. The frame 10 is divided into an outer portion 111 and an inner portion 112. The magnetic circuit may be inserted between the outer portion and the inner portion and integrally fixed to the outer portion and the inner portion.

The outer peripheral end of the plate 23 can be fixed over a step provided on the outer wall 14 of the outer part 111 with a diameter larger than that of the magnet 22, The height of the step is left so that the fixed position of the edge 50 to be described later is regulated. In the fourth embodiment, the magnetic circuit is injected and fixed to the frame 10, but it may be separately manufactured and assembled. In addition, only the yoke 24 is insert-injected, and the magnet 22 and the plate A method of laminating the yoke 24 and the magnet 22, and a method of laminating the plate 23 on the yoke 24 and the magnet 22 are possible.

Shaped voice coil 26 is located in the gap between the inner circumferential surface of the plate 23 of the magnetic circuit 20 and the outer circumferential surface of the yoke 24 and the inner peripheral surface of the plate 23 of the magnetic circuit 20 and the yoke 24 So that the up and down movement is made freely.

The diaphragm 40 is provided with a slight gap with respect to the inner circumferential surface of the yoke 24 and connected to the voice coil 26 and the coupler 30 to vibrate integrally with the voice coil 26. In the fourth embodiment of the present invention, the shape of the diaphragm 40 is surrounded by the ring-shaped magnetic circuit 20. In the fourth embodiment, the circular ring-shaped magnetic circuit 20 and the circular plate- The diaphragm 40 is started. Although the illustrated diaphragm 40 is in the form of a circular plate, when the rigidity of the diaphragm 40 is additionally required, the diaphragm 40 may have a curved cross-sectional shape that can increase the section modulus.

The first end portion 32 of the coupler 30 is fixed to the upper part of the outer edge of the diaphragm 40 as a shape corresponding to the edge shape of the diaphragm and the second end of the coupler 30 is fixed to the bobbin 26 wound with the voice coil, And is fixed to the upper end of the bobbin. Between the first end portion 32 and the second end portion 34, there are provided three connection portions 36 corresponding to the number and positions of the cut portions 241 of the yoke. Similarly to the first embodiment, And the second end are also divided into three corresponding to the three connecting portions. The connection portion 36 is a portion connecting the divided first end portion and the center of the second end portion.

The coupler 30 may be made of a material that is not attracted by a magnetic force, and a material through which electricity can pass. The coupler 30 may have a rigid material or a cross-section so as to secure the rigidity for the integrated behavior of the diaphragm 40 and the voice coil 26. The coupler is electrically conductive and is divided into a plurality (three in the fourth embodiment of the present invention), so that it can be utilized as a path or path for supplying power to the voice coil. A via hole or a groove-like soldering portion S is provided in a portion of the connection portion 36 close to the second end portion 34 fixed to the bobbin 26 so that the coil wound on the bobbin can be easily soldered, A soldering portion S for electrically connecting the coupler to a terminal for supplying power to the coil may be provided at the first end portion 32 of the coupler 30. [ A wire connected to a terminal provided on the inner side portion 112 side is soldered to the soldering portion S through a portion of the diaphragm 40 corresponding to the soldering portion S on the first end side, And is electrically connected to the coil.

The edge of the diaphragm 40 is fixed to the frame 10 via the edge 50. The outer end of the edge 50 is aligned and fixed in position by a step provided on the frame 10, more specifically on the upper surface of the plate 23 and on the side wall 14 of the outer portion 111, 50 is coupled with the edge of the diaphragm 40 to provide damping force to the diaphragm.

A damper mounting hole 19 is provided at the center of the frame 10, more specifically, the inside portion 112, and a damper 70 is installed in the damper mounting hole. The damper 70 is provided with a plurality of convex ring-shaped portions having concentric circles (in the fourth embodiment, three ring-shaped portions are provided), a convex portion having an outer shape of a truncated cone is provided at the center of the damper 70, The upper end of the portion is fixed to the center of the bottom surface of the diaphragm 40. The damper 70 connects the central portion of the frame and the central portion of the diaphragm 40 to provide a damping force to the diaphragm 40. The size and number of the ring-shaped portion of the damper can be designed in consideration of a damping force to be provided to the diaphragm.

When the speaker of the fourth embodiment is compared with the first embodiment, the diaphragm of the speaker of the fourth embodiment oscillates in its entire area without a center hole, so that the area of the diaphragm can be further secured as compared with the first embodiment, Rise.

Also, when compared with the first embodiment, the fourth embodiment can simplify the assembly process of the speaker. That is, the frame 10, the yoke 24, the magnet 22 and the plate 23 are partially assembled through a process such as insert injection (STEP 1; refer to FIG. 27), and the diaphragm 40 and the voice coil 26 The upper end of the convex portion of the damper 70 is connected to the outer periphery of the diaphragm 40 by the coupling 30 and the inner periphery of the edge 50 is coupled to the outer periphery of the diaphragm 40 The edge of the damper 70 is coupled to the damper mounting hole 19 of the frame 10 and the periphery of the edge 50 is coupled to the outer wall of the frame 10 (STEP 3; FIG. 28 , The assembly can be completed. Needless to say, such an assembling procedure and a method can be changed as needed.

29 to 31, a modification of each configuration of the fourth embodiment will be described.

29, it is also possible that these portions are integrally molded as one frame 10, unlike the case where the frame 10 described above is divided into the outer portion 111 and the inner portion 112. The portion connecting them integrally may be provided at a position corresponding to the position of the slit portion of the yoke 24 and the position of the divided portion of the divided magnet 22. [

30, the yoke 24 described above has a structure in which the horizontal portion is formed of one annular portion, the vertical portion is vertically bent at the inner periphery thereof, and the cut portion 241 is formed at a required position, that is, 24 are formed of one component. This yoke shape 24 may be provided in a form in which the cutout portion 241 extends to the horizontal portion as shown in Fig. 30, and the yoke is divided into a plurality of (three in the embodiment) yokes.

31, the outer edge of the edge 50 is fixed to the outer edge of the frame 10, the inner edge of the edge 50 is fixed to the outer edge of the diaphragm 40, A form with one convex damping portion is illustrated. 31, the outer periphery of the edge 50 is fixed to the outer edge of the frame, and the inner periphery of the edge 50 is fixed to the outer edge of the diaphragm 40, if necessary for adjusting the damping force or the like , It is possible to adjust the damping force by fixing the middle portion of the edge 50 to the upper end portion of the bobbin 26 and providing convex curved portions between the outer and intermediate portions of the edge and between the middle portion and the inner periphery of the edge . The convex curved surface portion covering the intermediate portion and the inner periphery of the edge has a function of preventing external dust or air from flowing in or out rather than providing the damping force because the coupler 30 has a considerable rigidity, And a convex curved surface portion provided between the intermediate portion and the convex curved surface portion.

[Fifth Embodiment]

32 to 38 show the overall structure of a thin speaker as a fifth embodiment according to the present invention. Hereinafter, differences from the fifth embodiment will be mainly described in comparison with the above-described embodiments, and redundant description of the structure and effects will be omitted.

The third embodiment differs from the fifth embodiment in that the diaphragm 40 is substantially square so that the loudspeakers are rounded as a whole and a circular magnetic circuit 20 is disposed at the center. And the first sidewall 14 of the frame 10 are connected by the first edge 51 and the diaphragm 40 And the plate 23 of the magnetic circuit is connected to the second edge 52 to support the diaphragm 40.

The difference between the third embodiment and the fifth embodiment will be described. First, it can be seen that there is a difference in the coupler 30. The coupler of the fifth embodiment is more similar to the coupler of the first embodiment than the third embodiment, but differs from the coupler of the first embodiment.

38, the coupler 30 of the fifth embodiment of the loudspeaker according to the present invention includes a voice coil 26 attached to a lower surface thereof and having a second end portion 34 having a shape corresponding to the voice coil, A first end portion 32 spaced apart from the second end portion and fixed to an inner edge of the diaphragm 40, a first end portion 32 connected to the cutout portion 241 of the yoke 24, And a connecting portion 36 provided at a corresponding position.

And the coupler 30 has an extension 38 that extends outwardly at the first end. In the fifth embodiment of the present invention, the extending portion extends from the opposite portion at the position where the connecting portion 36 is provided in order to further secure the rigidity of the coupler. However, the position where the extension portion 38 extends is not necessarily limited to this.

In the fifth embodiment, the extension portion 38 extends further outward than the outer periphery of the vibration plate 40, and the outer end portion of the extension portion 38 is connected to the third end portion 39. The extension portion 38 has a generally curved shape and this shape has an extension portion 38 that extends further outward than the outer periphery of the diaphragm 40 as shown in Figs. 32, 34, and 35, So that the extension length of the portion can be sufficiently secured. The extended portion 38 and the diaphragm 40 are overlapped with each other by adhesion or the like and the third end portion 39 is attached and fixed to the upper end of the first side wall 14 of the frame 10 . The length of the portion of the extension 38 that extends further outward than the outer periphery of the diaphragm 40 is a length sufficient to allow the diaphragm 40 to vibrate freely from the third end 39 fixed to the frame 10 And this structure allows the outer end portion of the extension of the coupler to function as a suspension.

In the fifth embodiment, it is exemplified that the coupler 30 is divided into four parts. One divided portion of the coupler 30 divided into four parts is exemplified by a configuration in which both ends of the first end portion 32 and the second end portion 34 are connected to each other by the connecting portion 36. And the connecting portion 36 of the neighboring divided portion is arranged to pass through one cutout portion 241 of the yoke 24. [

However, for the convenience of assembling the coupler 30, the four divided third end portions 39 are fabricated and assembled to each other through the temporary fixing portion 35, and the temporary fixing portion 35 ) Are removed so that these quadrant forms are completed. Both ends of the temporary fixing part 35 are in the form of a neck for easy removal.

A solder portion S where a via hole is formed in the coupler portion near the voice coil 26 to solder the coil strand connected to the voice coil 26 is provided and the terminal portion 18 formed on the first sidewall of the frame 10 A soldering portion S to which an external power source is connected is also provided on the third end portion 39 of the coupler 30 which overlaps with the first end 39 of the coupler 30. [

Particularly, if the terminal portion 18 of the frame 10 is used together with a screw hole or the like for fixing the speaker to the enclosure, the soldering portion S of the third end portion 39 may be connected to an external power source Can be utilized as a location.

As described above, the coupler 30 of the fifth embodiment connects the two configurations so that the bobbin 26 of the voice coil and the diaphragm 40 can behave as one body, while the coupler 30 is used as an electric path for connecting the voice coil and the external power source At the same time, the suspension functions together.

According to the fifth embodiment, the curved surface portion of the first edge 51 is convex downward, and the inner edge of the first edge 51 is fixed to the lower edge of the outer edge of the diaphragm 40, The outer end of the edge 51 is fixed and aligned with the step portion of the first side wall 14 of the frame 10. 33 and 37, the third end of the above-described coupler 30 is fixed over the upper end surface of the outer end of the first edge fixed to the step portion and the upper surface of the first side wall. Such a structure has an advantage that the third end of the coupler is exposed at the outermost side, so that the coupler is more easily connected to an external power source.

The order of stacking the first edge 51, the diaphragm 40, and the coupler 30 is not necessarily limited to the order shown in the fifth embodiment of the present invention. For example, from the bottom to the top, the coupler 30, the diaphragm 40, the first edge 51, or the other order. Of course, at this time, the direction in which the convex shape of the curved surface portion of the first edge 51 faces may be formed in a direction that does not interfere with the extending portion 38 of the coupler 30. [

Also, in comparison with the third embodiment, the assembling process of the speaker of the fifth embodiment is as follows. First, the frame 10, the yoke 24, the magnet 22 and the plate 23 are partially assembled through a process such as insert injection (STEP 1; refer to FIG. 35), and the diaphragm 40 and the voice coil 26 The inner edge of the first edge 51 is joined to the outer periphery of the diaphragm 40 and the outer edge of the second edge 52 is joined to the inner periphery of the diaphragm 40 The outer periphery of the first edge 51 is joined to the step of the outer wall of the frame 10 and the inner periphery of the second edge 52 is joined to the step on the upper portion of the plate 23 And fixing the third end portion 39 of the coupler 30 on the first side wall 14 of the frame 10 (STEP 3; see FIG. 37), the assembly can be completed. The temporary fixing unit 35 can be removed at an appropriate point before and after STEP 3. Needless to say, such an assembling procedure and a method can be changed as needed.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the scope of the invention is not limited to the disclosed exemplary embodiments. It is obvious that a transformation can be made. Although the embodiments of the present invention have been described in detail above, the effects of the present invention are not explicitly described and described, but it is needless to say that the effects that can be predicted by the configurations should also be recognized.

10: frame
111: outer portion
112: inner portion
12: magnetic circuit accommodating portion
14: first side wall (outer side)
15, 17: chin
16: second side wall (inner side)
161: incision
18: Terminal portion
19: Damper mounting hole
20: magnetic circuit
22: magnet
23: Plate
24: York
241:
26: Voice coil (bobbin)
30: Coupler (vibration coupler)
32: first end
34: second end
35:
36: Connection
38: Extension
39: Third end
40: diaphragm
42: center ball
50: Edge
51: 1st edge
52: 2nd edge
60: cover
70: Damper
90: diaphragm assembly

Claims (17)

A diaphragm 40 having a predetermined vibration surface;
A connection part (36) extending in a direction deviating from the vibration surface in the diaphragm;
A voice coil (26) fixed to an end of the connection portion and disposed at a position deviated from the vibration surface; And
And a magnetic circuit (20) incorporating the voice coil,
Wherein the magnetic circuit portion intersecting with the connection portion is provided with a cutout portion (241) for providing a space for allowing the connection portion to move in accordance with a vibration direction of the diaphragm.
The method according to claim 1,
The speaker device further includes a first end portion 32 fixed to the diaphragm 40, a second end portion 34 fixed to the voice coil, and a coupler 30 having the connection portion,
And the connecting portion connects the first end and the second end.
The method of claim 2,
Wherein the coupler comprises a conductive material,
The voice coil is electrically connected to the coupler,
Wherein the coupler is electrically connected to the terminal.
The method according to claim 2 or 3,
Wherein a first end of the coupler is fixed to a first edge of the diaphragm facing the connecting portion,
Wherein the coupler further comprises an extension (38) extending in a direction opposite to the connection with respect to the first end (32).
The method of claim 4,
The coupler further comprises a third end (39) fixed along a second edge opposite the first edge of the diaphragm,
And the extension is connected to the third end.
The method of claim 5,
Wherein the extension extends further outward than the diaphragm,
And the third end is fixed to the outer wall of the frame.
The method according to claim 1,
Wherein an edge is provided between the diaphragm and the magnetic circuit, one end of the diaphragm being fixed to the diaphragm and the other end being fixed to the frame (10) fixing the magnetic circuit or the magnetic circuit.
The method according to claim 1,
The magnetic circuit comprising:
A magnet (22);
A plate (23) attached to a first pole of the magnet (22); And
And a yoke (24) attached to a second pole of the magnet (22) and having an end disposed adjacent the end of the plate,
And the cutout portion is provided on the yoke.
The method of claim 8,
Wherein the space between the end of the yoke and the end of the plate is open toward the rear of the speaker device.
The method according to claim 8 or 9,
And a cover (60) covering at least a space between the end of the yoke and the end of the plate.
The method of claim 8,
Wherein the space between the end of the yoke and the end of the plate is open toward the front of the speaker device.
The method according to claim 1,
The diaphragm has an annular shape having a center hole (42)
Wherein the magnetic circuit is disposed inside the center hole.
The method of claim 12,
Wherein an outer periphery of the diaphragm is substantially rectangular, and the center hole is circular.
The method according to claim 1,
Wherein the magnetic circuit is spaced apart from an outer periphery of the diaphragm and surrounds an outer periphery of the diaphragm.
15. The method of claim 14,
The magnetic circuit comprising:
An annular magnet (22);
An annular plate (23) attached to a first pole of said magnet (22); And
And an annular yoke (24) attached to a second pole of the calcite (22) and having an end disposed further inside than the inner end of the plate and adjacent the inner end of the plate,
And the cutout portion is provided on the yoke.
The method according to claim 1,
Wherein the frame (10) to which the diaphragm (40) and the magnetic circuit (20) are fixed is an enclosure.
A display device comprising the speaker device according to any one of claims 1 to 3, claims 7 to 9, and claims 11 to 16.

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