CN219181668U

CN219181668U - High-performance thin loudspeaker

Info

Publication number: CN219181668U
Application number: CN201990000887.0U
Authority: CN
Inventors: 全映俊; 郭一焕; 高宽昊
Original assignee: Esonik Co ltd
Current assignee: Esonik Co ltd
Priority date: 2019-11-22
Filing date: 2019-12-05
Publication date: 2023-06-13
Anticipated expiration: 2029-12-05
Also published as: KR102181415B1; WO2021100958A1

Abstract

According to the present utility model, a high performance thin speaker is disclosed as follows. The plate and the external magnet are divided into n pieces, wherein n is a natural number of more than 2, the bracket portion supports the outer side surface of the voice coil, the side surface of the bracket portion extends to the clearance space between the external magnet and the plate, and the speaker comprises: a vibration plate that is attached so as to be capable of vibrating in the up-down direction and includes a main body portion that engages with an outer end portion of the bracket portion, an inner edge portion that extends inward of the main body portion and engages with the guide, and an outer edge portion that extends outward of the main body portion and engages with the upper frame portion; and a damper portion that engages between the bracket portion and the upper frame portion.

Description

High-performance thin loudspeaker

Technical Field

The present utility model relates to a high-performance thin speaker, and more particularly, to a high-performance thin speaker in which a plate and an external magnet are divided into n pieces, wherein n is a natural number of 2 or more, a holder portion supports an outer side surface of a voice coil and a side surface of the holder portion extends to an outside magnet and a gap space of the plate divided into n pieces, the speaker including: a vibration plate that is attached so as to be capable of vibrating in the up-down direction and that includes a main body portion that engages with an outer end portion of the bracket portion, an inner edge portion that extends inward of the main body portion and engages with the guide, and an outer edge portion that extends outward of the main body portion and engages with the upper frame portion; and a damper portion that cooperates between the bracket portion and the upper frame portion. Since the diaphragm and the damper are all moved to the outside of the magnetic field portion, the operating range of the vertical amplitude of the voice coil can be maximized in a thin structure, and a thin structure can be realized, so that a thicker magnet can be used than before, and therefore, high output can be obtained and sound quality can be improved even though the thickness is further improved.

Background

Fig. 1 is a side sectional view showing the constitution of a speaker according to the related art.

As shown in fig. 1, a conventional speaker includes a frame 10, a magnet 111 provided in the frame 10 and formed in a ring shape, and upper and

lower plates

112 and 113 provided at upper and lower portions of the magnet 111, respectively, and constitutes a magnetic circuit together with pole pieces 114.

Here, a coil provided near the magnet 111 is wound around the outer peripheral surface of the bobbin 120, and a substantially central portion of the bobbin 120 is supported by the frame 10 via a damper 121 so as to be capable of vibrating in the up-down direction. In addition, a vibration plate 130 is fitted to the upper end of the bobbin 120, and the vibration plate 130 is connected to the frame 10 through an edge 140 made of an elastically deformable raw material.

On the other hand, when a magnetic force is formed between the upper plate 112 and the pole piece 114 by a magnet and a current is applied to the coil 122, the vibration plate 130 vibrates in the up-down direction by the lorentz force, and thus sound is transmitted to the outside.

With the speaker according to such a related art, the speaker must have a thickness of a height degree that further increases the thicknesses of the upper plate 112, the lower plate 113, and the magnet 111 in the height of the vibration plate 130, and thus there is a problem that the overall thickness is inevitably increased. In addition, there have been attempts to reduce the thickness of the upper plate 112, the lower plate 113, the magnet 111, and the like, but when the thickness is reduced, the strength of the magnetic force becomes weak, and there is a problem that the output is reduced and the sound quality is lowered.

In addition, when the diaphragm 130 vibrates with a large amplitude, although there is an effect that a high output can be obtained, as shown in the drawings, since the damper 121 is provided between the bobbin 120 and the frame 10 and is horizontally disposed on the upper portion of the upper plate 112, the operating range of the vertical amplitude of the voice coil wound around the bobbin 120 inevitably becomes narrow due to interference with the upper plate 112, and the amplitude of the diaphragm 130 becomes narrow, so that there is a problem that the output is limited to be increased to a certain size or more.

In this regard, according to the prior patent document, korean patent laid-open publication No. 20-0371619 (grant, 12/21/2004, title of the utility model: thin speaker provided with damper), the following technical constitution is disclosed: the present utility model relates to a Thin Speaker (Thin Speaker) provided with a damper (damper), the Speaker comprising: a base body including an upwardly open receiving opening; an electromagnetic assembly disposed in the receiving port and including at least a yoke (yoke), a magnet, an electrode plate (Pole Piece), and a voice coil; and a diaphragm connected to the periphery of the receiving opening of the base body, wherein a damper having a wavy cross section is provided at the center of the diaphragm, a voice coil of the electromagnetic assembly is provided at the outer periphery of the damper on the side surface of the diaphragm opposite to the receiving opening, and the damper center is fixed to the electromagnetic assembly.

However, the operating range of the vertical amplitude of the voice coil inevitably becomes narrow, and the amplitude of the diaphragm 130 becomes narrow, so that there is a problem that the output is limited to be increased to a certain level or more.

Prior art literature

Patent literature

Patent document 1: korean patent laid-open publication No. 20-0371619 (12/21/2004), thin speaker provided with damper

Disclosure of Invention

Technical problem

The present utility model has been made to solve the above-described problems, and an object of the present utility model is to provide a high-performance thin speaker configured such that a plate and an external magnet are divided into n pieces, where n is a natural number of 2 or more, a holder portion supports an outer side surface of a voice coil and a side surface outer portion of the holder portion extends to a gap space where the external magnet and the plate are divided into n pieces, the speaker including: a vibration plate that is attached so as to be capable of vibrating in the up-down direction and that includes a main body portion that engages with an outer end portion of the bracket portion, an inner edge portion that extends inward of the main body portion and engages with the guide, and an outer edge portion that extends outward of the main body portion and engages with the upper frame portion; and a damper portion that cooperates between the bracket portion and the upper frame portion. Since the diaphragm and the damper are all moved to the outside of the magnetic field portion, the operating range of the vertical amplitude of the voice coil can be maximized in a thin structure, and a thicker magnet can be used in a thin structure, so that the performance is further improved in spite of the thinness, a high output can be obtained, and the sound quality can be improved.

Solution to problem

In order to achieve the above object, a high-performance thin speaker according to the present utility model is a speaker in which a plate and an external magnet are divided into n pieces, wherein n is a natural number of 2 or more, a holder portion supports an outer side surface of a voice coil, and a side surface of the holder portion extends to a gap space between the external magnet and the plate divided into the n pieces, the speaker including: a vibration plate that is attached so as to be capable of vibrating in the up-down direction and includes a main body portion that engages with an outer end portion of the bracket portion, an inner edge portion that extends inward of the main body portion and engages with the guide, and an outer edge portion that extends outward of the main body portion and engages with the upper frame portion; and a damper portion that engages between the bracket portion and the upper frame portion.

Here, the speaker includes a lower assembly body and an upper assembly body, the lower assembly body including: a lower frame part which covers the lower part of the speaker and has an opening along the up-down direction; a yoke located at an upper portion of the lower frame portion to cover an opening of the lower frame portion; an internal magnet located at an upper portion of the yoke; a pole piece (pole piece) located above the inner magnet; an external magnet located above the yoke and arranged to be adjacent to the internal magnet along a side wall of the internal magnet and divided into n pieces; and a plate positioned above the external magnet and arranged to be adjacent to the pole piece along a side wall of the pole piece and divided into the n pieces.

The upper assembly body includes: an upper frame part which covers the upper part of the speaker and has an opening along the up-down direction; a cover covering the upper frame portion; a guide member engaged with a lower portion of the cover; a bobbin (bobbin) surrounding the inner magnet and interposed between the inner magnet and the outer magnet; a voice coil wound around the bobbin and vibrating the bobbin up and down in response to an applied electrical signal; a bracket portion that supports the voice coil from an outer surface, and extends from a side surface outer portion of the bracket portion to a gap space divided into the n pieces by the external magnet and the plate; a vibration plate that is attached so as to be capable of vibrating in the up-down direction and includes a main body portion that engages with an outer end portion of the bracket portion, an inner edge portion that extends inward of the main body portion and engages with the guide, and an outer edge portion that extends outward of the main body portion and engages with the upper frame portion; and a damper portion that engages between the bracket portion and the upper frame portion.

In the case of dividing the plate and the external magnet into the n pieces, the plate and the external magnet are preferably uniformly divided at the same angle along the outer circumferential direction.

The holder preferably includes: n inner extension parts, the side surfaces of which extend to the gap spaces of the plate and the external magnet, and the inner ends of which support the outer side surfaces of the voice coil; and a circular portion having a circular shape and connecting the n inner extensions to each other.

In addition, the inner end of the inner extension of the bracket is preferably formed to have a relatively larger area than the extended portion of the inner extension so as to stably support the outer surface of the voice coil.

The damper portion is preferably composed of the n dampers that are engaged between the bracket portion and the upper frame portion, and is formed between the n inner extending portions of the bracket portion along the outer circumferential direction.

Here, n is preferably 2 or 3 or 4.

Effects of the utility model

With the high-performance thin speaker according to the present utility model, the following effects can be obtained.

The first, high-performance thin speaker according to the present utility model is configured such that a plate and an external magnet are divided into n pieces, where n is a natural number of 2 or more, a holder portion supports an outer side surface of a voice coil, and a side surface outer portion of the holder portion extends to a gap space between the external magnet and the plate divided into n pieces, and the speaker includes: a vibration plate that is attached so as to be capable of vibrating in the up-down direction and that includes a main body portion that engages with an outer end portion of the bracket portion, an inner edge portion that extends inward of the main body portion and engages with the guide, and an outer edge portion that extends outward of the main body portion and engages with the upper frame portion; and a damper portion that cooperates between the bracket portion and the upper frame portion. Since the vibration plate and the damper portion are all moved to the outside of the magnetic field portion, a thinner structure can be specifically realized.

Second, since the working range of the vertical amplitude of the voice coil can be maximized in a thin structure and a thin structure can be realized, a thicker magnet can be used than in the past, and therefore, the performance can be further improved in spite of the thinness, a high output can be obtained, and the sound quality can be improved.

Thirdly, recently, a speaker is often required to be thin in a display or the like having a thin structure, but the present utility model provides an effect that performance is not degraded even when it is implemented in a thin flat-panel television or the like.

Drawings

Fig. 2 is an exploded perspective view showing the constitution of a high-performance thin speaker according to a preferred embodiment of the present utility model.

Fig. 3 is a perspective view of a high performance thin type speaker according to a preferred embodiment of the present utility model, as seen from an upper side.

Fig. 4 is a perspective view of a high performance thin type speaker according to a preferred embodiment of the present utility model, as seen from a lower side.

Fig. 5 is a diagram showing in detail a construction in which the vibration plate and the damper portion are all moved to the outside of the magnetic field portion to be thinned in the high-performance thin type speaker according to the preferred embodiment of the present utility model.

Symbol description

200-high performance thin speaker, 300-upper assembly body, 310-cover, 320-upper frame portion, 330-guide, 340-vibration plate, 350-bobbin, 360-voice coil, 370-bracket portion, 380-damper portion, 400-lower assembly body, 410-pole piece, 420-internal magnet, 430-plate, 440-external magnet, 450-yoke, 460-lower frame portion.

Detailed Description

Hereinafter, preferred embodiments according to the present utility model will be described in detail with reference to the accompanying drawings. Before the description, it should be noted that the terms and words used in the present description and claims should not be limited to the usual or dictionary meanings, but should be interpreted as meanings and concepts conforming to the technical ideas of the present utility model on the basis of the principle that the inventor can define the concepts of the terms exactly in order to describe the inventor's utility model in the best way.

Therefore, the embodiments described in the present specification and the configurations illustrated in the drawings are merely the most preferable embodiments of the present utility model and do not fully represent the technical idea of the present utility model, and it is understood that various equivalents and modifications can be substituted for them in the present application.

Fig. 2 is an exploded perspective view showing the constitution of a high-performance thin speaker according to a preferred embodiment of the present utility model, fig. 3 is a perspective view of the high-performance thin speaker according to a preferred embodiment of the present utility model as seen from the upper side, fig. 4 is a perspective view of the high-performance thin speaker according to a preferred embodiment of the present utility model as seen from the lower side, and fig. 5 is a diagram showing in detail the constitution in which the vibration plate and the damper portion are all moved to the outside of the magnetic field portion to be thinned in the high-performance thin speaker according to a preferred embodiment of the present utility model.

As shown in fig. 2 to 5, the high-performance thin speaker 200 according to the preferred embodiment of the present utility model is constructed to include an upper assembly body 300 and a lower assembly body 400, and receives an electrical signal output from an external amplifier and converts the electrical signal into an acoustic signal through physical vibration.

First, the lower assembly body 400 includes a pole piece (pole piece) 410, an inner magnet 420, a plate 430, an outer magnet 440, a yoke 450, and a lower frame portion 460.

As shown in fig. 2, the lower frame part 460 covers the lower part of the high-performance thin speaker 200 and has a circular opening in the up-down direction. The lower frame part 460 forms a space part accommodating various configurations of the high-performance thin speaker 200 therein together with the upper frame part 320. The yoke 450 is positioned above the lower frame part 460 to cover the opening of the lower frame part 460 and to perform a magnetic circuit function, which is a function of drawing magnetic flux from the magnetic circuit together with the internal magnet 420 and the external magnet 44.

The internal magnet 420 is located at the upper portion of the yoke 450 and has a cylindrical shape, and a pole piece 410 is located at the upper portion of the internal magnet 420. Here, the circular shape is an example, and may be various shapes such as a quadrangle, a track shape, or an ellipse. The external magnet 440 is located at an upper portion of the yoke 450 and is configured to be adjacent to the internal magnet 420 along a side wall of the internal magnet 420 and divided into n magnets. When the external magnet 440 is divided into n magnets, it is preferable to divide uniformly at the same angle along the outer circumferential direction. The shape of the outer magnet 440 may be a circular shape, a quadrangular shape, a track shape, or various shapes such as an oval shape, similar to the shape of the inner magnet 420.

Next, the plate 430 is located at an upper portion of the external magnet 440 and is configured to be adjacent to the pole piece 410 along a side wall of the pole piece 410 and divided into n plates in the same manner as the external magnet 440. When dividing the plate into n plates, it is preferable to divide uniformly at the same angle along the outer circumferential direction. For example, n divisions can be divided into 2, 3, and 4 divisions at equal angles along the outer circumferential direction. Can be divided into a plurality of pieces as required.

Of course, in the above description, when the plate 430 and the external magnet 440 are divided into n pieces, design changes and modifications may be made as long as the desired optimum magnetic flux density is obtained, even if the angles are not equal or identical.

The above-described internal magnet 420 and external magnet 440 are members that supply direct current magnetic flux required to vibrate the bobbin 350, which will be described below, up and down.

Next, the upper assembly body 300 includes a cover 310, an upper frame part 320, a guide 330, a vibration plate 340, a bobbin 350, a voice coil 360, a bracket part 370, and a damper part 380.

Here, the upper frame portion 320 covers an upper portion of the high-performance thin speaker 200 and has a circular opening in the up-down direction. The circular opening is exemplified, and the circular opening shape of the upper frame portion 320 may be a quadrangular opening, a track-shaped opening, or an elliptical opening. The cover 320 is a structure that covers the upper frame portion 320 to protect the internal structure.

The bobbin 350 is configured to surround the internal magnet 420 and to be interposed between the internal magnet 420 and the external magnet 440, and the voice coil 360 is configured to be wound around the bobbin 350 and to vibrate the bobbin 350 up and down in response to an electrical signal applied from the outside. If an electric signal representing an audio signal is transmitted to a coil wound around a magnetic gap, a driving force is generated, thereby functioning as a vibration source of a speaker. The material of the winding may be a copper wire or an aluminum wire coated with a natural substance.

Next, the mount portion 370 is a structure in which the voice coil 360 is supported from the outer side surface and the gap spaces divided into n by the outer magnet 440 and the plate 430 are extended to the outside (outer circumferential direction) of the side surface of the mount portion 370. The holder portion 370 preferably includes n inner extensions for supporting the outer surface of the voice coil 360 at the inner end and a circular portion connecting the n inner extensions to each other and having a circular shape, and extends laterally outward to each of the n divided gap spaces of the plate 430 and the external magnet 440.

In addition, in order to stably support the outer surface of the voice coil 360, the inner end of the inner extension is preferably formed with an area (for example, a configuration in which the diameter is increased) relatively larger than the extended portion of the inner extension. Here, the bracket portion 370 may be processed by injection molding or the like.

The diaphragm (or the paper drum or cone) 340 is configured to be mounted so as to be capable of vibrating in the up-down direction by receiving up-down vibrations from the voice coil 360 and the bobbin 350 by the bracket portion 370. The vibration plate 340 is formed of paper or a special raw material, so that the reproduced sound quality can be improved better.

The vibration plate 340 includes a main body portion and an inner side edge portion and an outer side edge portion. Here, the main body portion is engaged with an upper portion of an outer end portion of the holder portion 370, the inner edge portion extends inward of the main body portion to be engaged with the guide 330 engaged with the lower portion of the cover 310, and the outer edge portion extends outward of the main body portion to be engaged with the upper frame portion 320.

The damper portion 380 is configured to be engaged between the bracket portion 370 and the upper frame portion 320. The damper portion 380 is preferably composed of n dampers that fit between the bracket portion 370 and the upper frame portion 320. The damper portion 380 is preferably not identical to the extending direction of the n inner extensions of the holder portion 370, and is formed between the n inner extensions along the outer circumferential direction.

Meanwhile, the damper 380 may be configured to have a groove shape that repeatedly bends in the up-down direction from the outside toward the inside, and may be formed in a flat plate shape according to the material. Among the materials used, in addition to damper materials that are generally used for speakers, rubber, polyurethane, plastic, and the like may be used, and in addition, metal materials may be used.

In addition, when the damper 380 is formed of a metal material such as copper or aluminum, conductivity can be provided at the same time, and thus, the damper 380 can also have a terminal function of exposing an outer end portion of the damper 380 to the outside of the frame portion and receiving an electrical signal input from the outside.

Here, n is preferably 2 or 3 or 4. As described above, the number of n may be modified or changed as necessary.

With the above-described configuration, in which the vibration plate mounted so as to be capable of vibrating in the up-down direction and the damper portion engaged between the bracket portion and the upper frame portion are all moved to the outside of the magnetic field portion, that is, a wide space indicated by a in fig. 5, the present utility model can maximize the operating range of the up-down amplitude of the voice coil while having a thin structure.

With this configuration, a thin structure can be realized, and therefore, a thicker magnet can be used than in the past, and therefore, even though thin, the performance can be further improved, and a high-output, high-performance thin speaker with improved sound quality can be provided.

As described above, although the present utility model has been described with reference to the limited embodiments and the accompanying drawings, the present utility model is not limited thereto, and it is needless to say that various modifications and variations can be made by those skilled in the art within the scope equivalent to the technical idea of the present utility model and the appended claims.

Claims

1. A high-performance thin speaker is characterized in that,

the plate and the external magnet are divided into n pieces, wherein n is a natural number of 2 or more,

the bracket portion supports the outer side surface of the voice coil and the side surface of the bracket portion extends to the gap space divided into n pieces of the external magnet and the plate,

the speaker includes:

a vibration plate that is attached so as to be capable of vibrating in the up-down direction and includes a main body portion that engages with an outer end portion of the bracket portion, an inner edge portion that extends inward of the main body portion and engages with the guide, and an outer edge portion that extends outward of the main body portion and engages with the upper frame portion; the method comprises the steps of,

and a damper portion for engaging the bracket portion with the upper frame portion.

2. The high performance thin speaker of claim 1,

the speaker includes a lower fitting body and an upper fitting body,

the lower assembly body includes:

a lower frame part which covers the lower part of the speaker and has an opening along the up-down direction;

a yoke located at an upper portion of the lower frame portion to cover an opening of the lower frame portion;

an internal magnet located at an upper portion of the yoke;

a pole piece located at the upper part of the internal magnet;

an external magnet located above the yoke and arranged to be adjacent to the internal magnet along a side wall of the internal magnet and divided into n pieces; the method comprises the steps of,

and a plate positioned above the external magnet and arranged to be adjacent to the pole piece along a side wall of the pole piece and divided into the n pieces.

3. The high-performance thin speaker of claim 2,

the upper assembly body includes:

an upper frame part which covers the upper part of the speaker and has an opening along the up-down direction;

a cover covering the upper frame portion;

a guide member engaged with a lower portion of the cover;

a bobbin which surrounds the inner magnet and is interposed between the inner magnet and the outer magnet;

a voice coil wound around the bobbin and vibrating the bobbin up and down in response to an applied electrical signal;

a bracket portion that supports the voice coil from an outer surface, and extends from a side surface outer portion of the bracket portion to a gap space divided into the n pieces by the external magnet and the plate;

4. The high-performance thin speaker as claimed in claim 3, wherein,

when the plate and the external magnet are divided into the n pieces, the plate and the external magnet are uniformly divided along the outer circumferential direction.

5. The high-performance thin speaker of claim 4,

the bracket portion includes:

n inner extension parts, the side surfaces of which extend to the gap spaces of the plate and the external magnet, and the inner ends of which support the outer side surfaces of the voice coil; the method comprises the steps of,

a circular portion having a circular shape and connecting the n inner extensions to each other.

6. The high-performance thin speaker of claim 5,

the inner end of the inner extension of the bracket is formed with a relatively larger area than the extended portion of the inner extension so as to stably support the outer surface of the voice coil.

7. The high-performance thin speaker of claim 6,

the damper portion is composed of the n dampers which are engaged between the bracket portion and the upper frame portion, and is formed between the n inner extending portions of the bracket portion along an outer circumferential direction.

8. The high-performance thin speaker of claim 7,

the n is 2 or 3 or 4.