WO2011027995A2

WO2011027995A2 - Microspeaker having a high output vibrating diaphragm joining structure

Info

Publication number: WO2011027995A2
Application number: PCT/KR2010/005760
Authority: WO
Inventors: 김규동; 오세환
Original assignee: 주식회사 블루콤
Priority date: 2009-09-03
Filing date: 2010-08-27
Publication date: 2011-03-10
Also published as: KR100930537B1; WO2011027995A3

Abstract

The present invention provides a microspeaker comprising: a frame having a hollow interior; a cover for covering one open side of the frame; a yoke for covering the other open side of the frame; an external magnet inserted into the frame and having a hollow interior, and which generates a magnetic field having a predetermined intensity and direction; an external plate for concentrating, in a specific direction, the magnetic field generated by the external magnet; an internal magnet for generating a magnetic field in a direction identical to that of the magnetic field of the external magnet; and an internal plate mounted on an upper surface of the internal magnet to concentrate, in a specific direction, the magnetic field generated by the internal magnet. Further, a voice coil is arranged to vibrate in the height direction of the external magnet and internal magnet. A vibrating body is arranged to vibrate along with the voice coil in the upward and downward directions. A vibrating diaphragm is interposed between the cover and the vibrating body so as to vibrate in the upward and downward directions by means of the vibrating body which vibrates in the upward and downward directions, in order to generate sound. A solder pad is mounted on the vibrating body to transmit an electrical control signal transmitted from the outside of the frame to the vibrating body. The thus-configured microspeaker having a high output vibrating diaphragm joining structure according to the present invention prevents the disconnection of both ends of the voice coil coupled to the vibrating body, improves the vibrating strength of the vibrating diaphragm, and thus achieves a higher sound output.

Description

Micro speaker with high power diaphragm mating structure

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a micro speaker having a high power diaphragm coupling structure mounted on a mobile phone, a PDA, and other small electronic products. In particular, the magnetic field strength of the magnet is increased to increase the vibration strength of the diaphragm, and both ends of the voice coil The present invention relates to a micro speaker having a high output diaphragm coupling structure that can be integrated with a diaphragm to prevent disconnection of a voice coil.

In general, a speaker is an electro-acoustic converter that converts electrical energy into voice energy, which is an important component that determines the quality of an audio product.

The domestic market of the speaker showed a sharp increase until the early 1990s due to the increase in demand for automobile and high-end AV speakers, but decreased in 1995 due to the economic downturn and the saturation of AV equipment.

However, with the advancement of information communication devices such as PDAs, mobile phones, and small PCs, the demand for micro-speakers inserted into the information communication devices is steadily increasing.

On the other hand, in the case of the micro-speaker, it generates a large sound pressure at a low voltage of less than 2V, and has excellent sound characteristics, but as the thickness of the permanent magnet for driving the speaker is gradually miniaturized, the magnetic field for the permanent magnet In addition, the strength of is also reduced, there is a problem that there is a limit in miniaturizing the volume of the speaker.

In addition, the structure of the conventional micro speaker is composed of a structure in which both ends of the voice coil is vibrated up and down together with the voice coil in a state in which the both ends of the voice coil is coupled with the signal source, so that both ends of the voice coil may be disconnected over time. There was a problem.

In addition, when assembling separate dampers, signal sources, and voice coils into a single component, there is a problem that the manufacturing process becomes complicated, which consumes a lot of manpower and manufacturing time, and always expects equal quality. There was a hard problem.

Accordingly, the present invention solves the structural problems according to the conventional speaker as described above to prevent both ends of the voice coil is disconnected over time, and to increase the strength of the permanent magnet to obtain a high output sound effect The purpose is to provide a micro speaker with a high power diaphragm coupling structure.

Micro speaker having a high output diaphragm coupling structure of the present invention for achieving the above object is a frame through which the inside, a cover for closing one open side of the frame, the other open side of the frame is closed Yoke, an external magnetic magnet having a through hole therein while being inserted into the inside of the frame and generating a magnetic field having a certain intensity and direction, and having a through hole therein while being mounted on an upper portion of the magnetic magnet and specifying a magnetic field of the magnetic magnet A magnetic plate capable of concentrating in a direction, a magnetic magnet inserted into a through hole provided in the magnetic magnet and the magnetic plate and generating a magnetic field having a direction equal to that of the magnetic magnet, and mounted on an upper surface of the magnetic magnet and mounted on the magnetic magnet Magnetic field that can concentrate the magnetic field in a specific direction And a byte. In addition, a magnetic field having a specific direction and intensity is generated in the through-hole of the magnetic magnet and the magnetic plate located in the outer direction of the magnetic magnet, and then the magnetic field generated from the magnetic magnet and the magnetic magnet. In response, a voice coil vibrating in the height direction of the magnetic magnet and the magnetic magnet is mounted, and an electrical control signal is transmitted to the voice coil with an edge interposed between the magnetic plate and the lid between the magnetic plate and the lid. In addition, the vibrating body is vibrated in the vertical direction along the voice coil vibrating in the vertical direction. In addition, between the cover and the vibrating body is mounted with a diaphragm capable of generating sound while vibrating in an up and down direction by a vibrating body vibrating in an up and down direction, wherein the vibrating body receives an electrical control signal transmitted from outside the frame. Solder pads can be mounted that can be delivered to the vibrating body. The micro speaker having a high output diaphragm coupling structure according to the present invention having such a structure is that both ends of the voice coil coupled to the vibrator are disconnected over time by combining the voice coil vibrating in the up and down direction integrally with the vibrator. It can be prevented. In addition, by providing magnets separately disposed on the inner side of the coil and the outer side of the coil, the vibration intensity of the diaphragm can be further increased, and as a result, a higher output sound can be obtained.

The micro speaker having a high output diaphragm coupling structure according to the present invention having such a structure is connected to both ends of the voice coil and the voice coil vibrating in the up and down direction integrally with the vibrating body, so that both ends of the voice coil coupled to the vibrating body are disconnected. Can be prevented.

In addition, by attaching separately divided magnets on the inner side of the coil and the outer side of the coil, the vibration intensity of the diaphragm can be further increased, and as a result, a higher output sound effect can be obtained.

1 is an exploded perspective view of a micro-speaker having a high power diaphragm coupling structure equipped with a first embodiment of the diaphragm and the vibrating body,

FIG. 2 is a longitudinal sectional view of a micro speaker having a high output diaphragm coupling structure in which a diaphragm and a vibrating body are mounted;

3 is an exploded perspective view of a micro speaker having a high power diaphragm coupling structure, in which a second embodiment of the diaphragm and a third embodiment of the vibrating body are mounted;

4 is a longitudinal sectional view of a micro speaker having a high power diaphragm coupling structure, in which a second embodiment of the diaphragm and a third embodiment of the vibrating body are mounted;

5 is an exploded perspective view of a micro speaker having a high power diaphragm coupling structure, in which a third embodiment of the diaphragm and a third embodiment of the vibrating body are mounted;

6 is a longitudinal sectional view of a micro speaker having a high power diaphragm coupling structure, in which a third embodiment of the diaphragm and a third embodiment of the vibrating body are mounted;

7 is a view for explaining a solder pad provided in the present invention,

8 is a view for explaining the present invention made of a rectangular shape,

9 is a view for explaining the present invention made of a hexagonal shape,

10 is a view for explaining the present invention made of an ellipse form.

* Description of symbols on the main parts of the drawings *

1. frame 3. cover

5. Voice coil 7. Foreign magnet

9. Magnetized magnet 11. York

15. Magnetic plate 17. Magnetic plate

19. Vibrating body 21. Diaphragm

23. Solder pads 25. Through holes

27.Terminal Plate 29.Damper Plate

31.Connection bridge 33.Edge

35. Body

First, prior to entering the detailed description of the present invention, if it is determined that the detailed description of the known technology or configuration related to the present invention may unnecessarily obscure the subject matter of the present invention, the detailed description thereof will be omitted.

In addition, the terms to be described below are terms defined in consideration of functions in the present invention, which may vary according to a user's or operator's intention or custom, and the definition thereof describes a micro speaker having a high output diaphragm coupling structure according to the present invention. It should be made based on the contents throughout the specification.

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

1 is an exploded perspective view of a micro speaker having a high power diaphragm coupling structure equipped with a first embodiment of a diaphragm and a vibrating body, and FIG. 2 is a micro speaker having a high power diaphragm coupling structure equipped with a first embodiment of a diaphragm and a vibrating body. 3 is an exploded perspective view of a micro speaker having a high output diaphragm coupling structure, in which a second embodiment of the diaphragm and a third embodiment of the vibrating body are mounted.

4 is a longitudinal sectional view of a micro speaker having a high output diaphragm coupling structure in which a second embodiment of the diaphragm and a third embodiment of the vibrating body are mounted, and FIG. 5 is a third embodiment of the diaphragm and a third embodiment of the vibrating body. An exploded perspective view of a micro speaker with a high power diaphragm coupling structure with an example mounted thereon, and FIG. 6 is a longitudinal cross-sectional view of a micro speaker with a high power diaphragm coupling structure with a third embodiment of the diaphragm and a third embodiment of the vibrating body.

In addition, Figure 7 is a view for explaining the solder pad provided in the present invention, Figure 8 is a view for explaining the present invention made in a square shape, Figure 9 is a view for explaining the present invention made in a hexagonal shape. .

10 is a view for explaining the present invention in the form of an ellipse.

As shown in these drawings, the micro speaker having a high output diaphragm coupling structure according to the present invention includes a frame 1 through which the inside is penetrated, a cover 3 for closing one open side of the frame 1, and A yoke 11 for closing the other open side of the frame 1, an external magnet having a through hole 10a therein while being inserted into the inside of the frame 1 and generating a magnetic field having a certain intensity and direction ( 7), the magnetic plate 15, which is mounted on the upper portion of the magnetic magnet 7 and has a through hole 10b therein and which can concentrate a magnetic field generated from the magnetic magnet 7 in a specific direction, the magnetic magnet (7) and the magnetic magnet (9), which is inserted into the through holes (10a, 10b) provided in the magnetic plate plate 15 and generates a magnetic field in the same direction as the magnetic magnet (7), the upper end of the magnetic magnet (9) Do not let the inside mounted on the cotton And a naeja plate 17 capable of concentrating the magnetic field of the network in a particular direction.

In addition, through-

holes

10a and 10b of the magnetic magnet 7 and the magnetic plate 15 located in the outer direction of the magnetic magnet 9 have a magnetic field having a specific direction and intensity according to an electrical control signal transmitted from the outside. After generation, the voice coil 5 which vibrates in the height direction of the magnetic magnet 7 and the magnetic magnet 9 in response to the magnetic field generated from the magnetic magnet 7 and the magnetic magnet 9 is mounted. Between the plate 15 and the cover 3, while transmitting an electrical control signal to the voice coil 5 in the state where the edge is interposed between the magnetic plate 15 and the cover 3, the vibration in the vertical direction A vibrating body 19 oscillating in the vertical direction is mounted along the voice coil 5.

In addition, between the cover 3 and the vibrating body 19 is mounted a vibrating plate 21 capable of generating sound while vibrating in the vertical direction by the vibrating body 19 which vibrates in the vertical direction, the vibration The sieve 19 may be equipped with a solder pad 23 capable of transmitting the electrical control signal transmitted from the outside of the frame 1 to the vibrating body 19.

On the other hand, the cover 3 is preferably provided with two or more through holes 25 so that the sound generated from the diaphragm 21 can be effectively transmitted as shown in FIG.

On the other hand, the vibrating body 19, as in the first embodiment shown in Figure 1, having a through hole 10c therein, while being fixed between the diaphragm 21 and the magnetic plate 15, the terminal plate 27 ), A damper plate 29 inserted into the through hole 10c provided in the terminal plate 27, and the voice coil 5 mounted on one side facing the yoke 11, and the damper plate. It is connected to the edge of the through hole (10c) and the edge of the (29) and the terminal plate (27) at the same time has a curved shape and can receive an electrical control signal from the solder pad 23 to be transmitted to the damper plate (29). It may consist of two or more connecting bridges 31.

In addition, it is preferable that any one of the connection bridges 31 is equipped with a printed circuit capable of receiving an electrical control signal of '+' polarity or '-' polarity from the solder pad 23, and is transmitted from the printed circuit. Electrical control signals of the '+' polarity and the '-' polarity may be transmitted to the voice coil 5 through the damper plate 29.

At this time, the damper plate 29 receives the electrical control signals of the '+' polarity and the '-' polarity transmitted from the connection bridge 31 to transfer the electrical control signal to the voice coil (5). It is preferred to have.

On the other hand, the diaphragm 21, as in the first embodiment shown in Figure 1, is provided with a through hole (10d) therein, one side facing the cover 3 protrudes convex, the other side It may consist of an edge 33 which can be in contact with the connecting bridge 31 or the damper plate 29.

In addition, the vibrating body 19 is fixed between the diaphragm 21 and the outer magnetic plate 15 while having a through hole 10c therein as a second embodiment, and is connected to a solder pad 23 to be connected from the outside. The voice coil 5 is inserted into a terminal plate 27 capable of receiving the transmitted electrical control signal and a through hole 10c provided in the terminal plate 27 and facing the yoke 11. Is connected to the edge of the damper plate 29, and the through hole 10c provided in the damper plate 29 and the terminal plate 27, and has a curved shape and an electrical control signal from the terminal plate 27. Received may be made of two or more connection bridges 31 that can be delivered to the damper plate (29).

In addition, the vibrator 19 has a through hole 10e in the damper plate 29 provided in the first or second embodiment of the vibrator 19, as in the third embodiment illustrated in FIG. 3. ) Can be changed into a perforated structure, and as shown in FIG. 3, the second embodiment of the diaphragm 21 has a through hole 10d of the edge 33 provided with the second embodiment of the diaphragm 21. ) May be configured by additionally mounting the body 35 protruding convexly protruding from one side facing the cover 3.

In addition, as shown in FIG. 5, the third embodiment of the diaphragm 21 may be configured by separately dividing the edge 33 and the body 35 provided in the second embodiment of the diaphragm 21. The second embodiment and the third embodiment of the diaphragm 21 are preferably combined with the third embodiment of the vibrator 19.

Meanwhile, as shown in FIG. 7, the solder pad 23 penetrates the frame 1 with one end connected to the terminal plate 27 or the connection bridge 31, and then has one side surface of the frame 1. It may be fixed in close contact with, and one end may extend outward in the frame 1 in a state connected to the terminal plate 27 or the connecting bridge (31).

Meanwhile, the frame 1, the yoke 11, and the cover 3 provided in the present invention may be formed in a quadrangle, a hexagon, a circle, or an oval, as shown in FIGS. 8 to 10.

Hereinafter, a process of operating a micro speaker having a high output diaphragm coupling structure according to the present invention, in which the first embodiment of the diaphragm 21 and the first embodiment of the vibrator 19 are mounted, will be described with reference to FIGS. 1 and 2. The explanation is as follows.

First, when an electrical voice signal is input to the soldering pad 23 provided in the present invention, the soldering pad 23 transmits the electrical voice signal to the connection bridge 31, and the connection bridge 31 is connected to the connection bridge ( The electrical voice signal is transmitted to the voice coil 5 through the printed circuit provided in 31 and the printed circuit provided in the damper plate 29.

In this case, the voice coil 5 receiving the electrical voice signal is applied to the composite magnetic field of the magnetic plate 15 and the magnetic plate 17 when the current intensity of the electrical voice signal transmitted from the solder pad 23 is large. It rebounds and ascends toward the cover 3 together with the damper plate 29.

On the other hand, when the current intensity of the electric voice signal transmitted to the voice coil 5 is weakened, the force that the voice coil 5 repels against the composite magnetic field of the magnetic plate 15 and the magnetic plate 17 is weakened. As a result, the damper plate 29 and the voice coil 5 are returned to the initial state by the elastic restoring force of the connecting bridge 31.

As such, the voice coil 5 and the damper plate 29 vibrate in the up and down directions according to the strength of the current transmitted to the voice coil 5, and as a result, the damper plate 29 is vibrating plate 21. ) Can be vibrated in the up and down directions to generate sound.

On the other hand, the micro speaker having the high output diaphragm coupling structure according to the present invention in which the second and third embodiments of the diaphragm 21 and the second and third embodiments of the vibrating body 19 are installed is operated. The procedure is similar to the operating principle of the micro speaker with the high power diaphragm coupling structure, in which the first embodiment of the diaphragm 21 and the first embodiment of the vibrating body 19 are mounted, thus avoiding repeated description.

The micro speaker having the high output diaphragm coupling structure according to the present invention having such a structure has a time by combining both ends of the voice coil 5 and the voice coil 5 vibrating vertically with the vibrating body 19 integrally. As it passes, both ends of the voice coil 5 coupled to the vibrating body 19 can be prevented from being disconnected.

In addition, by attaching separately divided magnets on the inside of the voice coil 5 and the outside of the voice coil 5, the vibration intensity of the diaphragm 21 can be further increased, and as a result, a higher output sound can be obtained. .

The present invention described above is not limited to the above-described embodiments and drawings because various substitutions and changes can be made by those skilled in the art without departing from the technical spirit of the present invention.

Claims

A frame 1 penetrated therein;

A cover (3) for closing one open side of the frame (1);

Yoke 11 for closing the other open side of the frame (1);

An external magnet (7) inserted into the inside of the frame (1) and having a through hole (10a) therein and generating a magnetic field having a predetermined intensity and direction;

A magnetic plate (15) mounted on an upper portion of the magnetic magnet (7) and having a through hole (10b) therein and capable of concentrating a magnetic field generated from the magnetic magnet (7) in a specific direction;

A magnetic magnet 9 which is inserted into the through holes 10a and 10b provided in the magnetic magnet 7 and the magnetic plate 15 and generates a magnetic field having the same direction as that of the magnetic magnet 7;

An inner magnetic plate 17 mounted on an upper surface of the inner magnetic magnet 9 to concentrate a magnetic field of the inner magnetic magnet 9 in a specific direction;

A magnetic field having a specific direction and strength in accordance with the electric control signal transmitted from the outside, mounted in the through-hole 10a, 10b of the magnetic magnet 7 and the magnetic plate 15 located in the outer direction of the magnetic magnet (9) After generating the voice coil (5) vibrating in the height direction of the magnetic magnet 7 and the magnetic magnet 9 in response to the magnetic field generated from the magnetic magnet 7 and the magnetic magnet (9);

It is mounted between the magnetic plate 15 and the cover 3 to transmit an electrical control signal to the voice coil 5 in the state where the edge is interposed between the magnetic plate 15 and the cover 3 A vibrating body 19 oscillating in the up and down direction along the voice coil 5 oscillating in the up and down direction;

A diaphragm 21 mounted between the cover 3 and the vibrator 19 and capable of generating sound while vibrating in an up and down direction by a vibrator 19 vibrating in an up and down direction;

Micro speaker having a high output diaphragm coupling structure consisting of a solder pad (23) mounted on the vibrator (19) to transmit an electrical control signal transmitted from outside the frame (1) to the vibrator (19).
The method of claim 1,

The cover (3) is a micro-speaker having a high output diaphragm coupling structure, characterized in that the two or more through holes 25 are provided so that the sound generated from the diaphragm 21 can be effectively transmitted.
The method of claim 1,

The vibrating body 19 includes a terminal plate 27 having a through hole 10c therein and fixed between the diaphragm 21 and the outer magnetic plate 15;

A damper plate (29) inserted into the through hole (10c) provided in the terminal plate (27) and equipped with a voice coil (5) on one side facing the yoke (11); And

The damper plate 29 is connected to the edge of the damper plate 29 and the edge of the through hole 10c provided in the terminal plate 27 and has a curved shape and receives an electrical control signal from the solder pad 23. Micro speaker with a high output diaphragm coupling structure, characterized in that consisting of two or more connection bridges 31 that can be transmitted to.
The method of claim 1,

The vibrator 19 has a through hole 10c therein, and is fixed between the diaphragm 21 and the outer magnetic plate 15, and is connected to the solder pad 23 to transmit an electrical control signal transmitted from the outside. A receiving terminal plate 27;

A damper plate (29) inserted into the through hole (10c) provided in the terminal plate (27) and equipped with a voice coil (5) on one side facing the yoke (11); And

The damper plate 29 is connected to the edge of the damper plate 29 and the edge of the through hole 10c provided in the terminal plate 27 and has a curved shape and receives electrical control signals from the terminal plate 27. Micro speaker with a high output diaphragm coupling structure, characterized in that consisting of two or more connection bridges 31 that can be transmitted to.
The method according to claim 3 or 4,

The damper plate (29) is a micro speaker with a high output diaphragm coupling structure, characterized in that the through hole (10e) is drilled.
The method according to claim 3 or 4,

The solder pad 23 may penetrate the frame 1 in a state where one end is connected to the terminal plate 27 or the connection bridge 31 and then be fixed to one side of the frame 1, or one end may be fixed to the terminal plate. Micro speaker having a high output diaphragm coupling structure, characterized in that extending in the outward direction of the frame (1) in the state connected to the (27) or the connection bridge (31).
The method of claim 1,

The diaphragm 21 is provided with a through hole 10d therein, and one side facing the cover 3 protrudes convexly, and the other side may contact the connection bridge 31 or the damper plate 29. Micro speaker with a high power diaphragm coupling structure, characterized in that the edge (33).
The method of claim 7, wherein

The through-hole (10d) provided in the edge 33 is a micro speaker with a high output diaphragm coupling structure, characterized in that the body 35 is protruded convexly protruding one side facing the cover (3).
The method of claim 8,

The body (35) and the edge (33) is a micro speaker with a high output diaphragm coupling structure, characterized in that divided into each other.
The method of claim 1,

The frame (1) and the yoke (11) and the cover (3) is a micro speaker with a high output diaphragm coupling structure, characterized in that the rectangular or hexagon, round or oval.