KR100963562B1 - Super-slim dynamic speaker - Google Patents

Abstract

PURPOSE: A super slim dynamic speaker is provided to reduce overall height of a speaker by applying magnet and plate of ring type without the conventional yoke. CONSTITUTION: A first magnet(330) is installed on the bottom part of the empty space formed on a frame(310). A second magnet(320) is installed on the outer circumference of the first magnet on the bottom part. A first plate(341) is installed on the upper part of the first magnet. A second plate(340) is installed on the outer circumference of the first plate on the upper part of the second magnet.

Description

Super slim dynamic speaker {SUPER-SLIM DYNAMIC SPEAKER}

The present invention relates to an ultra-slim dynamic speaker, and more particularly, to an ultra-slim (or ultra-thin) of the dynamic speaker, which is easy to manufacture, and has an improved structure of the ultra-slim structure to improve the performance of the dynamic speaker. It relates to a dynamic speaker.

1 is an exploded perspective view of an ultra-slim dynamic speaker that improves the structure of the speaker so as to secure sufficient amplitude while lowering the height of the speaker so that ultra-slim (or ultra-thin) and high-power speakers can be realized. 2 shows the assembly cross-sectional view of FIG. 1.

Referring to each of these drawings, the ultra-slim dynamic speaker 100 includes a frame 31 and a yoke 32, a magnet 33, and a plate, which are sequentially installed in an empty space 31d formed in the frame 31. 34, the voice coil 35 provided between the plate 34 and the yoke 32, the damper 40 provided on the outer circumferential surface of the voice coil 35, and the empty space of the frame 31 ( 31d) covers the upper surface of the damper 40 and covers the upper surface of the vibration plate 51 and the center cap 52 is installed to cover the upper surface of the voice coil 35 is configured.

The damper 40 includes a bottom support portion 41 provided to be supported by the bottom portion 31b of the frame 31, and extends upwardly from an inner end of the bottom support portion 41 to have a circular lower side surface. A lower side surface portion 42 forming a surface portion, a pleat portion 43 extending horizontally from the upper end portion of the lower side surface portion 42 to form a pleat uniformly, and an upper portion at the inner end portion of the pleat portion 43. And an upper side portion 44 which extends to form a circular upper side, and an upper side portion 46 which extends horizontally to the upper side portion 44.

And the upper side surface portion 44 of the damper 40 provided to be supported on the outer surface of the voice coil 35 is provided with a tapered (folded structure), the bottom support portion 41 is circular or oval.

In addition, the center cap 52 is installed to cover the upper side surface portion 44 and the upper surface portion 46 of the damper 40 so that the center cap 52 is installed in the empty space 31d of the frame 31. Accordingly, the center cap 52 is mounted on the damper 40 and the diaphragm 51. That is, the center cap 52 includes an inner circumferential surface 52a having a '∩' shape that can cover the upper side portion 44 and the upper side portion 46 of the damper 40.

And the edge part 51d of the diaphragm 51 is installed toward the bottom part 31b of the frame 31 so that the said diaphragm 51 may be installed in the empty space 31d of the frame 31, and the diaphragm 51 The outer edge of the end of is supported by the outer edge fixing portion 31c of the frame 31.

In addition, the side portion 46b of the through hole 46a of the damper 40 is tapered, and the upper end portion of the voice coil 35 is fitted to the side portion 46b. That is, the side portion 46b of the through hole 46a of the damper 40 is tapered so that it is structurally strong and can be supported and installed on the side of the voice coil 35.

In addition, a locking jaw 32b is formed at the outer circumferential surface of the lower end of the yoke 32, and the opening 31a in which the yoke 32 is formed at the center of the bottom 31b of the frame 31 by the locking jaw 32b. It is fitted in and installed.

As described above, it is possible to implement an ultra slim (or ultra thin) speaker by significantly lowering the height (H2) of the ultra slim dynamic speaker 100, and is structurally slim but has excellent bass reproduction and has an advantage of making a large output. have.

However, in the conventional ultra-slim dynamic speaker 100, since the damper 40 is made of a cloth (for example, cotton), a loss due to energy transfer occurs when the voice coil 35 is driven to reproduce the speaker. Efficiency (performance) falls and split resonance occurs.

After the impregnation agent is impregnated into the damper 40, the impregnation agent flows down in the drying process, or the impregnation rate is different because the drying degree is not uniform.

In addition, the displacement is partially different, uniform quality control is difficult, and the phenomenon that the upper surface portion 46 corresponding to the neck (Neck) portion of the damper 40 is collapsed by long-term use.

In addition, in the magnetic circuit of the conventional ultra-slim dynamic speaker 100, the bottom surface of the yoke 32 is attached to the inside of the frame 31 to lower the height H2, thereby making it slim. However, there is a limit in slimming the height H2 by the thickness of the yoke 32.

The present invention has been created to solve the above problems, it is possible to make the ultra-slim of the speaker, easy quality control and displacement tolerance management, to minimize the energy transfer loss when driving the voice coil, structurally more robust Its purpose is to provide an ultra-slim dynamic speaker that can be built.

The ultra-slim dynamic speaker of the present invention for achieving the above object, the frame; A first magnet installed at a bottom of an empty space formed in the frame; A second magnet installed at the bottom portion as an outer circumferential surface of the first magnet; A first plate disposed on the first magnet; A second plate disposed on the second magnet as an outer circumferential surface of the first plate; A voice coil installed between the first and second plates; A damper installed on an outer circumferential surface of the voice coil; A diaphragm installed while covering the empty space of the frame and covering the upper surface of the damper; And a center cap installed to cover the upper portion of the voice coil.
In this case, the second magnet, the second plate, and the voice coil is installed in the form of stairs,
The damper is supported by the bottom portion, a step is formed to reduce the cross-sectional area toward the top, and provided with at least three stepped portions to cover the second magnet, the second plate, and the voice coil, among the stepped portion At least one displacement adjustment hole is formed to adjust the displacement,
The stepped portion may include a first side portion extending upward from an inner end end of the bottom support provided to be supported by the bottom of the frame to form a circular lower side surface, and extending horizontally from an upper end end of the first side portion. A first stepped portion formed of the first horizontal portion; A second stepped portion including a second side portion extending upward from an end end of the first horizontal portion to form a circular lower side surface, and a second horizontal portion extending horizontally from an upper end end of the second side portion; And a third step portion including a third side portion extending upwardly from an end of the second horizontal portion to form a circular lower side surface, and a third horizontal portion extending horizontally from an upper end end of the third side portion. It is characterized by that.

According to the embodiment of the present invention, since the damper of the speaker is manufactured by press molding or plastic injection molding, it is advantageous for dimensional tolerance management, and a horizontal portion is formed in the damper, and a displacement adjusting hole is formed in the step portion including the horizontal portion. This is advantageous for managing the displacement tolerance.

In addition, the wrinkles formed in the existing damper are not formed, and the stepped portion is formed in the damper to avoid interference with other components as well as structurally strong.

By applying a ring-type magnet and plate without using a conventional yoke, the height of the speaker (H) can be lowered, thereby enabling a slimmer speaker and improving efficiency.

In addition, the damper can be manufactured by plastic injection molding or press molding, so that the seating surface shape of the damper can be freely formed, and structurally robust can be maintained.

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

FIG. 3 is an exploded perspective view of a speaker employing an ultra-slim dynamic speaker according to the present invention, and FIG. 4 is an assembled cross-sectional view of FIG.

Prior to the description, the general configuration of the ultra-slim dynamic speaker will be described with reference to FIGS. 1 and 2 described above, and the characteristic configuration of the damper of the ultra-slim dynamic speaker according to the present invention will be described.

3 and 4, the ultra-slim dynamic speaker 300 according to the present invention includes a frame 310 and a first portion provided in the bottom portion 311 of the empty space 312 formed in the frame 310. A magnet 330, a second magnet 320 installed on the bottom 311 of the frame 310 as an outer circumferential surface of the first magnet 330, and a first plate provided on the first magnet 330. 341, a second plate 340 disposed on the second magnet 320 on the outer circumferential surface of the first plate 341, and a voice coil 350 disposed between the first and second plates 341 and 340. It is composed.

Accordingly, the second magnet 320 and the second plate 340 are formed in a ring type, and the first magnet 330 is a neodymium magnet.

In the ultra-slim dynamic speaker 300 according to the present invention, a damper 360 provided on an outer circumferential surface of the voice coil 350 and an empty space 312 of the frame 310 are also covered. The diaphragm 370 is installed to cover the upper surface, and the center cap 380 is installed to cover the upper portion of the voice coil 350.

In addition, the second magnet 320, the second plate 340, and the voice coil 350 of the ultra-slim dynamic speaker 300 according to the present invention is installed in a staircase shape.

In addition, according to the structures of the second magnet 320, the second plate 340, and the voice coil 350 installed in the step shape, the damper 360 is supported by the bottom 311 and has a cross-sectional area toward the top thereof. A reducing step is formed, and at least three stepped parts are provided to cover the second magnet 320, the second plate 340, and the voice coil 350.

In addition, at least one of the stepped portions of the damper 360 is formed with a displacement adjusting hole 360b to adjust the displacement. The displacement adjusting hole 360b is formed in succession at regular intervals over the entire surface of the stepped portion.

The stepped portion of the damper 360 includes first, second and third stepped portions 362 to 367. However, as described above, the at least three stepped parts are not limited to a specific number of steps, and may vary depending on the installation structure of the components installed in the damper 360 or the empty space 312 of the frame 310. have.

The stepped portion of the damper 360 will be described in more detail with reference to the detailed view of the damper 360 shown in more detail in FIGS. 5 and 6.

The first stepped parts 362 and 363 may include a first side part 362 extending upward from an inner end of the bottom support part 361 provided to be supported at the bottom of the frame 310 to form a circular lower side surface; It consists of a first horizontal portion 363 extending horizontally from the upper end end of the first side portion 362.

The second step portions 364 and 365 may include a second side portion 364 extending upward from an end portion of the first horizontal portion 363 to form a circular lower side surface, and an upper end portion of the second side portion 364. It consists of a second horizontal portion 365 extending horizontally at the end.

The third step portions 366 and 367 may include a third side portion 366 extending upward from an end end of the second horizontal portion 365 to form a circular lower side surface, and an upper end of the third side portion 366. And a third horizontal portion 367 extending horizontally at the end.

That is, as the second magnet 320, the second plate 340, and the voice coil 350 are installed in the form of a staircase, the second magnet 320 is covered by the first steps 362 and 363. A second magnet 320 and a second plate 340 are installed to cover the second plate 340 by the second step portions 364 and 365.

As described above, the damper 360 of the ultra-slim dynamic speaker according to the present invention has a stepped portion formed at a portion to which the voice coil 350 is attached, and has a ring-type second magnet 320 and a second plate 340. It is a structure in which a stepped portion is formed to avoid interference with. As described above, the number of steps formed in the damper 360 may form a plurality of steps for avoiding structural interference and controlling displacement of the damper 360.

The displacement adjusting hole 360b of the stepped portion is formed in a quadrangular shape on the first horizontal portion 363 and the second side portion 364.

7 and 8, the displacement adjusting hole 460b of the damper 460 of another embodiment is formed in a 'Z' shape in the first horizontal portion 363.

As such, the displacement adjusting holes 360b and 460b are not limited to a specific shape and a specific number, and as described below, the shape and number of the displacement adjusting holes 360b and 460b may be determined according to the displacement control and the weight adjustment. have.

The through hole 372 formed in the center of the diaphragm 370 is inserted through the third step portions 366 and 367 to be supported by the second horizontal portion 365 of the second step portions 364 and 365, and the center cap 380 is installed to cover the third step portions 366 and 367.

In addition, the damper 360 is made of plastic injection molding. Therefore, the damper 360 may be applied to any plastic resin capable of injection molding (eg, ABS, HIPS, PP, etc.).

The damper 360 may be formed by press molding. Therefore, it is possible to apply all of the press-formable metals (eg, aluminum, iron, copper, etc.) and plastic films (eg, Kapton, PET, PI, etc.).

On the other hand, the lower end side portion 369 of the through hole 368 of the damper 360 is tapered, the upper end portion of the voice coil 350 is fitted to the side portion 369 is installed.

In addition, reference numeral 360a is a hollow part of the damper 360.

Referring to the operation of the ultra-slim dynamic speaker according to the present invention having the configuration as described above are as follows.

Prior to the description, the description of the operation of the general speaker will be omitted, and only the characteristic operation of the ultra-slim dynamic speaker according to the present invention will be described.

Referring back to the drawings, the first magnet 330 is mounted on the bottom 311 of the frame 310, the ring-type second magnet 320 is installed on the outer circumferential surface thereof, and the first magnet 330 is provided. The first plate 341 is mounted on the upper part, and the second plate 320 is installed on the ring-shaped second plate 340 on the upper part of the second magnet 320.

The lower portion of the voice coil 350 is disposed between the first and second plates 341 and 340.

Accordingly, the ultra-slim dynamic speaker 300 according to the present invention does not use the yoke as in the past, and installs the ring-type second magnet 320 and the second plate 340 to provide a conventional yoke (FIG. 1, 2) acts as 32), slimming is realized, and the speaker's performance efficiency is improved because the magnet volume is increased.

In addition, the second magnet 320, the second plate 340, and the voice coil 350 has a structure in which the diameter or left and right widths are reduced toward the upper portion, and thus are installed in a staircase shape.

Accordingly, the damper 360 also has three stepped portions such that the stepped portions have the first, second, and third stepped portions 362 to 367, thereby making the structure of the damper 360 firm.

In particular, the diaphragm 370 is more stable than the conventional one by installing the periphery of the through hole 372 of the diaphragm 370 so as to be supported by the second horizontal portion 365 of the second step portions 364 and 365 of the damper 360. And easy to install.

In addition, the displacement adjusting holes 360b and 460b of the dampers 360 and 460 are for controlling the displacement of the damper 360. In the speaker 300 according to the present invention, the displacement adjusting holes 360b may be variously formed. It is possible to adjust the displacement as well as the weight of the speaker vibrometer is easy to adjust the characteristics, it is advantageous to manage the displacement tolerance.

In addition, the damper 360 may be manufactured by injection molding or press molding, which is advantageous for dimensional tolerance management.

As described above, the height H of the ultra-slim dynamic speaker 300 according to the present invention is lower than the height H2 of the conventional speaker 100 as shown in FIG. This is possible.

In addition, since the damper 360 of the ultra-slim dynamic speaker 300 according to the present invention can be manufactured by plastic injection molding and press molding, the shape of the seating surface of the damper 360 can be freely manufactured in a circular or elliptical shape. Can be.

In addition, the ultra-slim dynamic speaker 300 according to the present invention can reproduce a stronger bass than the conventional ultra-thin speaker, and the height of the speaker is lowered to further increase the thickness of slim televisions such as LCDs and LED TVs. It can be made thinner, and the efficiency of the speaker can be more excellent than that of the existing speaker.

As described above, the present invention has been described with reference to one embodiment shown in the drawings, but this is only an example, and those skilled in the art may make various modifications and equivalent embodiments therefrom. Will understand. Therefore, the true scope of protection of the present invention should be defined only by the appended claims.

1 is an exploded perspective view of a super slim dynamic speaker according to the prior art.

2 is an assembled cross-sectional view of FIG.

Figure 3 is an exploded perspective view of the ultra-slim dynamic speaker according to the invention.

4 is an assembled cross-sectional view of FIG. 3.

FIG. 5 is a detailed perspective view of the damper of FIG. 3. FIG.

6 is a front view of FIG. 5;

7 is a detailed perspective view of a damper according to another embodiment of the ultra-slim dynamic speaker according to the present invention.

8 is a plan view of FIG.

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

310. The Frame

320. Second magnet

330. The first magnet

340. Second Plate

341.First Plate

350. Voice coil

360. Damper

362,363. 1st step

364,365. 2nd step

365. The Second Horizontal Department

366,367. 3rd step

370. Diaphragm

372. Through Hole

380. Center Cap

Claims (6)

A frame; A first magnet installed at a bottom of an empty space formed in the frame; A second magnet installed at the bottom portion as an outer circumferential surface of the first magnet; A first plate disposed on the first magnet; A second plate disposed on the second magnet as an outer circumferential surface of the first plate; A voice coil installed between the first and second plates; A damper installed on an outer circumferential surface of the voice coil; A diaphragm installed while covering the empty space of the frame and covering the upper surface of the damper; And a center cap installed to cover the upper portion of the voice coil. In this case, the second magnet, the second plate, and the voice coil is installed in the form of stairs, The damper is supported by the bottom portion, a step is formed to reduce the cross-sectional area toward the top, and provided with at least three stepped portions to cover the second magnet, the second plate, and the voice coil, among the stepped portion At least one displacement adjustment hole is formed to adjust the displacement, The stepped portion may include a first side portion extending upward from an inner end end of the bottom support provided to be supported by the bottom of the frame to form a circular lower side surface, and extending horizontally from an upper end end of the first side portion. A first stepped portion formed of the first horizontal portion; A second stepped portion including a second side portion extending upward from an end end of the first horizontal portion to form a circular lower side surface, and a second horizontal portion extending horizontally from an upper end end of the second side portion; And a third step portion including a third side portion extending upwardly from an end of the second horizontal portion to form a circular lower side surface, and a third horizontal portion extending horizontally from an upper end end of the third side portion. Ultra-slim dynamic speaker, characterized in that. delete delete delete delete The method of claim 1, The displacement adjusting hole is formed in the first horizontal portion and the second side portion, The diaphragm is inserted through the third step part through a through hole formed in the center of the diaphragm to be supported by the second horizontal portion. The center cap is an ultra-slim dynamic speaker, characterized in that installed to cover the third step.

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