KR20110132868A - Ultra-slim flat type speaker - Google Patents

Abstract

An ultra slim flat panel speaker is disclosed. The disclosed ultra-slim flat speaker includes a foam and a plate diaphragm installed inside the frame and the frame, a yoke installed outside the frame, a magnet installed in contact with the yoke, a plate installed in contact with an upper portion of the magnet, and the yoke. A flat speaker comprising a voice coil installed vertically in an empty space formed on an inner side and an outer side of a flake, wherein the damper has a soft repulsive force of a foam material.

Description

Ultra-thin speaker {ULTRA-SLIM FLAT TYPE SPEAKER}

The present invention relates to an ultra-thin speaker, and more particularly, to an ultra-slim flat speaker, which can be applied to an ultra-thin electronic device and improved to improve speaker productivity and speaker performance.

A speaker is a sound device that emits sound waves by converting an electric signal into vibration of a diaphragm to generate a small wave in the air.

Such a speaker includes a voice coil in which current flows through an external electric signal, a bobbin in which the voice coil is wound, a permanent magnet forming a magnetic field, and vibrations caused by vertical movement of the bobbin as sound waves in the air. A diaphragm or the like for spinning is provided.

The diaphragm of the speaker having the configuration as described above vibrates by Lorentz force which is a force acting on the charged particles moving in the magnetic field when current flows in the voice coil placed in the magnetic field. Low sounds are generated, and vibrations at high frequencies produce high sounds.

At this time, even with the same frequency, the larger the amplitude, the higher the sound pressure level, the louder the sound.

In addition, the speaker has been developed in various structures such as a cone speaker, a horn speaker, or a planar speaker so as to be appropriately applied to various electronic devices.

Among the speakers of various forms, flat-type speakers are applied to slim (or thin) electronic devices, particularly ultra-slim types such as light emitting diode televisions (LED TVs).

Recently, the sales volume of LED TVs has been steadily growing every year, and when the commercialization of OLED TVs becomes commercially available, the thickness of ultra-thin flat-panel TVs that are beyond imagination will be the trend. It is expected. In order to be applied to such an ultra-slim electronic device, the speaker must also be structurally ultra slim and satisfactory in performance, but there is no flat speaker that satisfies the structure or performance.

FIG. 2 shows a damper 70 of a circular or elliptical type according to the prior art which is most commonly used. The damper 70 of this type is used by molding the fabric (cotton, CONEX, etc.) after hot phenol treatment.

3 is a cross-sectional view of a general speaker to which the damper of FIG. 2 is applied.

However, the damper 70 generally used for the speaker is installed by being bonded to the side wall of the voice coil 110 bobbin and the bottom surface of the frame 10 and assists damping of vertical vibration of the edge 140. Coil 110 is left and right from the center of the empty space on the inside of the plate 30 and the outside of the yoke 20 to fix the contact so as not to contact the inside of the plate 30 and the outside of the yoke 20. do. However, since the damper 70 is bonded to the side wall of the bobbin 110 bobbin, the diaphragm 50 has two equal amplitude amplitude spaces, A and B, as shown in FIG. This is necessary. The reason is a space that is essential as a basic space for preventing the contact of the yoke 20 and the damper 70 at the lower side during the vertical amplitude. This makes securing the same amplitude space the most difficult task when designing ultra-thin speakers.

The present invention was created in order to solve the above problems, the ultra-thin speaker is implemented by changing the structure of the damper and the speaker, the ultra-slim flat plate to be applied to the ultra-thin electronic device to improve the performance of the speaker with this The purpose is to provide a type speaker.

An ultra slim flat panel speaker is disclosed. The disclosed ultra-slim flat speaker includes a foam and a plate diaphragm installed inside the frame and the frame, a yoke installed outside the bottom of the frame, a magnet installed in contact with the yoke, a plate provided on the magnet in contact with the magnet, In the flat-type speaker having a voice coil installed perpendicularly to the hollow space formed on the outside of the yoke and the flake inside, the damper has a soft repulsive force of the foam material, and the shape of the damper is a tower, hollow circle, solid circle, etc. There is no limitation on the form, and it is characterized by being able to be transformed into a suitable form by the durable structure of the speaker.

According to an embodiment of the present invention, by implementing a damper having the same soft elasticity of the foam material and installing it by adhering to the diaphragm, it is possible to implement an ultra-slim speaker, which can be applied to an ultra-thin electronic device. The soft elastic material, which is an essential element of the damper, can be made from raw materials such as vinyl chloride (PVC), urethane, rubber, etc., or similar materials, using all elastic materials. It can be designed to have the internal structure of the speaker such as.

1 is a plan view and a cross-sectional view of a representative form of a damper to which the foam is applied
2 is a plan view and a cross-sectional view of a conventional damper
3 is an internal cross-sectional view of the flat panel speaker using the damper of FIG.
4 is a typical voice coil
5 is a cross-sectional view of a typical speaker
6 is an exploded perspective view showing the configuration of an ultra-thin speaker according to the present invention

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

<Representative diagram> shows a cross-sectional view of the ultra-thin speaker according to the present invention, and <Figure 1> shows the form and cross-sectional view of the foam foam damper.

Referring to this figure, the ultra-thin speaker according to the present invention includes a frame 10, a magnet 40 installed in the yoke 20 and a yoke 20 provided at the lower end of the outside of the frame 10, and the magnet 40. Plate 30 is in contact with the top of the) and the voice coil 110 is installed in the empty space inside the yoke 20 and the outside of the plate 30, the top of the voice coil 110 and the bottom surface of the diaphragm 50 And a damper 150 installed on the bottom surface of the diaphragm 50 and the inner bottom of the frame 10, and the diaphragm 50 connected to the upper portion of the frame 10 and the upper portion of the voice coil 110.

As shown in FIG. 3, when the total amplitude space inside the speaker is C, two independent amplitude spaces, A and B, are required when the general damper 70 is applied. The reason why the amplitude space is required is to prevent the diaphragm from coming into contact with the yoke 20 and the damper 150 provided at the upper and lower sides during vertical vibration. If a touch occurs, an abnormal sound is generated and such a problem is treated as bad.

Some speakers do not apply the damper 70, but in the case of such a speaker, the amplitude for slimming is secured, but the sound is distorted because the left and right balance is not balanced depending on the flexibility of the edge 140 when the diaphragm 50 vibrates up and down. In the void space between the yoke 20 and the plate 30, the voice coil 110 is caused to come into contact with the yoke 20 or the plate 30 by the single vibration, so that a defect due to an abnormal sound is high. Only the edge 140 is difficult to withstand the elasticity of the amplitude, it is a structure that is difficult to receive high output.

When applying the damper 150 of the foam foam to be applied to the present invention, as shown in the <representative diagram> only one of the amplitude space of the A and B, that is, the amplitude space called D is possible to implement a slimmer speaker . In addition, it is possible to prevent the unidirectional vibration, which is a role of the existing damper 70, and to control the distortion of sound according to the flexibility of the edge 140 to have the same characteristics as those of the existing damper 70.

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

10 frames
20 York
30 plates
40 magnet
50 diaphragm
60 dust caps
70 dampers
80 gasket
90 gold lines
100 input terminal
110 voice coil
111 coil
120 Coil Fixing Bond
140 edges
150 dampers

Claims (2)

A frame and a yoke installed at an outer lower end of the frame; A magnet installed in the yoke; A voice coil installed adjacent to the upper portion of the magnet and vertically installed in an empty space inside the yoke and the outside of the plate; In the flat-type speaker provided with a foam foam damper provided between the upper portion of the voice coil and the bottom of the diaphragm, the bottom of the diaphragm and the inner bottom of the frame.
The foam foam damper
Ultra-thin speaker, which has a structure that is attached to the bottom of the inner frame and the diaphragm is installed The method of claim 1
The damper is a non-conductive material that is foamed (PVC, Rubber, Urethane, etc.) chemical material or similar elasticity, and is made to have the function of a conventional damper by using a material having a soft elasticity. Depending on the structure, the damper can be transformed into various shapes such as round or oval

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