KR101607529B1 - Speaker - Google Patents

Abstract

The present invention relates to a speaker to output a sound by being vibrated through a mutual response with a magnetometer according to an alternating signal applied to a voice coil by comprising: the magnetometer to be fixated on a frame by being made of a laminate of a yoke, a permanent magnet, and a plate; a vibrometer which is made of a bobbin combined to a vibration plate (cone paper) and a dust cap in the state in which the cone paper, the dust cap of the center of the cone paper, and the voice coil are wound; and a repulsion supporter which is composed of a suspension (damper) to support the vibrometer with a repulsive force and, more specifically, to a speaker which integrally includes the dust cap on the center of one side direction of the repulsion supporter, fixates and combines the voice coil or the bobbin, wherein the voice coil is wound around the other side of the repulsion supporter or the other end of the dust cap, provides a connection path of each of voice coil terminals and a path where +/- alternating signals of an external alternating signal providing unit (for example : amplifier) are passed by dividing the repulsion supporter into two parts, and forms a structure to secure a vibration space of the damper in the damper itself or/and a frame portion.

Description

Speaker {SPEAKER}

The present invention relates to a method of manufacturing a magnetic circuit in which a magnet is fixed to a frame and formed of a laminate of a yoke, a permanent magnet and a plate, a cone paper, a dust cap at the center of the diaphragm and a voice coil are wound And a damper supporting a vibration system of the vibration system, wherein the vibration system comprises a vibrating plate composed of a vibration plate and a bobbin coupled to the dust cap portion, and a damper supporting the vibration system, More particularly, the present invention relates to a loudspeaker which integrally includes a dust cap at the center of one side of the elastic support system, A bobbin on which a coil or a voice coil is wound is fixedly coupled, and the bobbin support system is divided into two parts, Alternating signal supply unit: a +/- alternating signal (for example amplifiers) that provides a path for the conduction, respectively, and relates to a hayeoseo provide a structure to secure a vibration space of the damper on the damper itself and / or the frame part speaker.

Generally speaking, a speaker is a sound apparatus that generates sound waves by converting an electrical signal into vibration of a diaphragm to generate a small-sized wave in the air. That is, the speaker is a conversion device that converts electrical energy into acoustic energy. The main components of the speaker are a magnet, a vibration system, and a support system. The speaker is composed of support frame parts serving as a case.

These loudspeakers can be classified into various types according to the position where the diaphragm (cone), which is a component of the vibration system, is placed, the shape of the diaphragm, the principle and method of converting electric signals into sound waves,

Particularly, a speaker used in a display device such as a TV is a radiation type speaker in which a diaphragm is directly placed in air. When a voice signal current is supplied to a voice coil positioned in a magnetic field formed by a permanent magnet, It is common to use the principle of acting on the coil to cause motion.

An example of such a general speaker is Korean Patent No. 419915, which discloses a speaker in which a speaker is provided with a diaphragm in which a yoke, a permanent magnet, a plate and a suspension (damper) are integrated, a voice coil, a frame and a protector It is a speaker.

2. Description of the Related Art [0002] In recent years, a display device on a large screen has become widespread due to the development of semiconductor technology. Speakers must be miniaturized and / or slimmed in order to realize a beautiful and simple design of the large screen display device.

As described above, if the speaker is made compact or slim, the components of the speaker, the vibration system, the elastic support system, and the support system constituting the speaker must be downsized. Particularly, in the flat panel display device, the width and the thickness of the loudspeaker are largely limited, and the restriction of the length is relatively small. Therefore, a speaker of a type which does not reduce the effective vibration area of the speaker by extending in the longitudinal direction while reducing the width and thickness of the speaker is mainly used. That is, a rectangular speaker having a large diameter (short axis) to a long diameter (long axis) ratio is applied without reducing the effective vibration area and the like.

Examples of the rectangular speaker include Korean Patent Registration No. 10-1100122 (name: Speaker; filed on Nov. 10, 2009), which includes at least one magnet for forming a magnetic field; At least one voice coil for generating a magnetic field by an externally supplied current and being operated by an interaction with a magnetic field formed at the at least one magnet; A diaphragm that is vibrated by movement of the at least one voice coil to generate sound; And at least one vibration assisting member attached to the diaphragm, for causing vibration due to the interaction of the at least one magnet and one or more voice coils to be evenly distributed throughout the diaphragm; Wherein the vibration assisting member has a surface having a predetermined width extending downward from the diaphragm, and the at least one voice coil is attached to the surface.

A common structure of such conventional loudspeakers is summarized as follows. As shown in FIG. 1, the speaker 1 is composed of a laminate of a yoke 1a, a permanent magnet 1b and a plate 1c, A dust cap 2b at the center of the diaphragm 2a and a bobbin 2b connected to the diaphragm 2a and the dust cap 2b in a state in which the voice coil 2c is wound, And a vibration system 2 for oscillating the vibrating system 2 in response to an alternating signal applied to the voice coil 2c and outputting sound while vibrating with mutual reaction with the magnet machine 1, (3).

 2 (a) and 2 (b), the diaphragm 2a, the dust cap 2b, and the voice coil 2c constituting the vibrometer 2 are disposed at one side And the other ends of the bobbin 2d wound on the bobbin 2d are bonded and fixed together with an adhesive.

 However, in the conventional speaker in which the coupling between the components of the vibration system 2 is made through bonding as described above, the vibration plate 2a, the dust cap 2b, and the voice coil 2c are wound on the bobbin 2d There is a problem that the bonding operation at the other end is very troublesome and the adhesive spreads to the outside of the bonding portion and the appearance is not good. In particular, when the adhesive is not evenly applied, the vibration output characteristic is deteriorated.

In addition, as shown in FIG. 3, the conventional speaker as described above is fixed to the upper surface of the center of the frame 4 through adhesion by the elastic support system 3 as a suspension. At this time, (Collision) between the frame 4 and / or the machine during the vibrating process due to the fact that the vibrating space (vibration space spacing d) There was a problem.

In the conventional speakers, since the elastic support system 3 is made of a sheet material having high deformability due to external pressure or movement, the voice coil 2a is held at the center of the gap of the machine tool 1, A separate jig is required, and after the voice coil 2a is fixed, an operation of pulling out and removing the jig is required, and thus the workability is lowered.

In addition, since the conventional speakers are made of a cotton material for the elastic support system, when the vibration is performed for a long period of time, there is a problem that the elastic property of the elastic support system is deformed and the output characteristic is changed.

In addition, since conventional speakers transmit an alternating signal output from the amplifier output terminal through the gold wire through the gold wire soldered to the diaphragm portion, the voice coil connecting structure and the external alternate signal transmitting structure are complicated and the workability is also low .

Disclosure of Invention Technical Problem [8] Accordingly, the present invention has been made in an effort to solve the above problems of the related art, and an object of the present invention is to provide a magnet device fixed to a frame made of a laminate of a yoke, a permanent magnet and a plate, a diaphragm and a damper supporting the vibrating system so as to elastically support the vibrating plate and the voice coil, and a bobbin coupled to the vibrating plate and the dust cap in a state in which the voice coil and the voice coil are wound, A voice coil, a voice coil, and a voice coil, wherein the voice coil is oscillated through mutual reaction with the electromagnet according to an alternating signal to output sound, wherein a dust cap is integrally provided at a center of one side surface of the elastic support system, Or a bobbin on which a voice coil or a voice coil is wound is fixedly connected to the other end of the dust cap, Alternating signal of an external alternating signal supply (e.g., an amplifier) is conducted, and a structure for securing a vibration space of the damper is provided to the damper itself and / or the frame portion The present invention has been made in view of the above problems.

In order to accomplish the above object, the present invention provides an electromechanical transducer, comprising: a magnet machine (11) composed of a laminate of a yoke (11a), a permanent magnet (11b) and a plate (11c) to form a magnetic flux in a gap; A vibration system 12 composed of a combination of a diaphragm 12a, a dust cap 12b and a voice coil 12c and reacting with the electromagnet 11 according to an alternating signal to output sound while vibrating; And a damper support system (13) for supporting the vibration system (12) elastically against the frame (14), wherein a dust cap (12b) is provided at the center of one side of the elastic support system (13) And a voice coil 12c or a bobbin 12d on which a voice coil 12c is wound is fixedly coupled to the other surface in the direction of the other surface so that the dust foot 12b and the voice coil 12c or the bobbin 12b on which the voice coil 12c is wound.

In the present invention, the dust cap 12b is integrally provided at the center of one side of the elastic support system 13, and the voice coil 12c or the voice coil 12c is provided in the other surface direction. And the voice coil 12c or the voice coil 12c is wound around the bobbin 12d and the dust 12c by the fixed connection of the dust cap 12b and the diaphragm 12a, The structure of the fixed engagement of the cap 12b and the effect of simplifying the coupling operation are obtained.

Further, according to the present invention, by applying a leaf spring such as a metallic material which is not easily deformed by an external pressure, rather than a high-deformable cotton material, So that the voice coil can be easily and accurately inserted into the center of the gap of the machine and can be positioned, thereby obtaining uniformity and accuracy of the output characteristic.

In the present invention, the elastic support system may be formed of a conductive material so as to provide connection portions between the connection portions of the voice coil terminals and an external alternate signal providing unit (e.g., an amplifier) The alternating signal from the output terminal of the amplifier is not transmitted to the voice coil through the gold wire soldered to the diaphragm portion as in the prior art, so that the connection structure of the voice coil and the external The effect of simplifying the alternate signal transmission structure is obtained.

The present invention is characterized in that an outer base 13a for expanding the vibration space and a bobbin 12d in which a voice coil 12c or voice coil 12c is wound on a central rim portion are provided on the outer rim portion of the elastic support system 13, And the inner bottom 13b for securing the vibration space of the elastic support system 13 is provided on the elastic support system 13 by securing a vibration space of the elastical support system 13 to the elastic support system 13 So that mutual interference with peripheral components is prevented.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view showing a structure and a coupling structure of a conventional speaker. FIG.
2 (a) and 2 (b) are cross-sectional views showing components and a coupling structure of a vibration system of a conventional speaker.
3 is a cross-sectional view showing the overall structure and the coupling structure of a conventional speaker.
4 is a perspective view showing a configuration according to an embodiment of the present invention.
5 is an exploded perspective view showing a configuration according to an embodiment of the present invention.
6 is a perspective view showing a configuration and a coupling structure of the elastic support system in the present invention.
FIG. 7 is an exploded perspective view showing a structure and a coupling structure according to another embodiment of the present invention; FIG.
8 is a cross-sectional view showing an overall structure and a coupling structure of the present invention.
9 (a) to 9 (d) are cross-sectional views showing the construction and the coupling structure of the dust cap in the present invention.

The present invention will now be described with reference to the accompanying drawings.

4 and 5, a speaker 10 according to the present invention includes a yoke 11a, a permanent magnet 11b, and a plate 11c, (11); A vibration system 12 composed of a combination of a diaphragm 12a, a dust cap 12b and a voice coil 12c and reacting with the electromagnet 11 according to an alternating signal to output sound while vibrating; And a damper support system (13) for supporting the vibration system (12) elastically against the frame (14), wherein a dust cap (12b) is provided at the center of one side of the elastic support system (13) And a voice coil 12c or a bobbin 12d on which a voice coil 12c is wound is fixedly coupled to the other surface in the direction of the other surface so that the dust foot 12b and the voice coil 12c or the bobbin 12b on which the voice coil 12c is wound.

Here, the speaker 10 according to the present invention vibrates the diaphragm 12a while interacting with the electric alternating signal (+ signal, - signal) applied to the voice coil 12c and the magnetic field of the magnet 11, Or the like. At this time, the speaker 10 of the present invention may be circular or a rectangular (track-type) speaker having a major axis and a minor axis.

In the meantime, the magnet machine 11 of the present invention may be an anti-magnetic type or an external type, and the present invention may be applied to an external type.

At this time, the yoke 11a constituting the magnet machine 11 forms an air gap through which the voice coil is to flow, while a pure iron (for example, Fe = 99.4%) supplying magnetic flux from the permanent magnet 11b to the magnetic pole, , Si: 0.3%, Mn: 0.2%). At this time, it is preferable that the thickness of the yoke 11a is thick so that the leakage magnetic flux is minimized.

The permanent magnet 11b constituting the magnet machine 11 may be a central penetrating member for supplying a continuous DC magnetic flux to an air gap of the magnetic circuit to which the voice coil is to be moved.

The plate 11c constituting the magnet machine 11 is made of pure iron (for example, Fe: 99.4%, Si: Si: Fe) for concentrating the magnetic flux from the permanent magnet 11b while forming an air gap through which the voice coil is to flow, 0.3%, Mn: 0.2%).

In the above, the long axis and the minor axis length of the permanent magnet 11b may be the same as or longer than the yoke 11a and the plate 11c (which may be larger in cross-sectional area)

In the present invention, the diaphragm 12a constituting the vibration system 12 may be a cone paper or a synthetic resin vibrating thin plate whose outer edge is fixed to one end of a frame (speaker main body) by an edge.

In addition, the voice coil 12c constituting the vibration system 12 may be one in which the coil itself is wound, cured and bonded after chemical treatment, or wound on the bobbin 12d.

On the other hand, in the present invention, the elastic support system 13 may be a suspension made of a conductive material, particularly a conductive metal plate spring, or a cloth made of cotton or synthetic fiber is impregnated with a thermoplastic resin, It may be a damper which is processed into a corrugated shape by pressing with a press.

In this case, when the elastic support system 13 is a conductive material, particularly a conductive metal material suspension, a carbon footprint is provided between an inner rim and an outer rim, and an inner rim By oscillating, it can be bisected in a non-interconnected manner, with respect to a hypothetical horizontal line crossing the center.

The terminals of the voice coil 12c are connected to each of the nested inner rims of the elastic support system 13, and each of the divided outer rims may extend outward to be an alternate signal input terminal (on the amplifier side).

6, a dome-type dust cap 12b made of a synthetic resin material can be insert-injection-molded on the inner edge of the elastic support system 13, As shown in Fig. 1, an outer case 13a for expanding a vibration space is insert injection-molded in an outer rim portion, and a voice coil 12c or a voice coil 12c is wound around an inner rim of the bobbin 12d. An inner base 13b for expanding the vibration space may be provided in the same shape as the dust cap 12b.

One embodiment of the present invention and its operation that can be made as described below are as follows.

First, the present invention comprises a magnet machine 11 composed of a laminate of a yoke 11a, a permanent magnet 11b and a plate 11c to form a magnetic flux in a gap; A vibration system 12 composed of a combination of a diaphragm 12a, a dust cap 12b and a voice coil 12c and reacting with the electromagnet 11 according to an alternating signal to output sound while vibrating; And a damper support system (13) for supporting the vibration system (12) elastically against the frame (14), wherein a dust cap (12b) is provided at the center of one side of the elastic support system (13) And a voice coil 12c or a bobbin 12d on which a voice coil 12c is wound is fixedly coupled to the other surface in the direction of the other surface so that the dust foot 12b and the voice coil 12c or the bobbin 12b on which the voice coil 12c is wound.

Here, the yoke 11a constituting the magnet machine 11 of the present invention has a cross section formed of a pure iron material which forms an air gap through which the voice coil flows, and which supplies a magnetic flux from the permanent magnet 11b to the magnetic pole The permanent magnet 11b constituting the magnet 11 has a permanent magnet 11b and a permanent magnet 11b on the air gap of the magnetic circuit on which the voice coil is to be moved. And a plate 11c constituting the magnet machine 11 is a central penetrating member made of a pure iron material for concentrating the magnetic flux generated from the permanent magnet 11b while forming a cavity for the voice coil to flow .

The diaphragm 12a constituting the vibration system 12 in the present invention is a cone paper in which the outer rim is fixed to one end of the frame (speaker main body) by an edge, and the voice coil 12c is a voice coil The voice coil itself is wound or wound around the bobbin 12d.

In the present invention as described above, when the voice coil 12c is positioned on the gap between the yoke 11a and the permanent magnet 11b constituting the magnet 11, the alternating signal applied to the voice coil 12c The magnetic machine 11 fixed to the frame 14 through the mutual reaction between the magnetic flux formed in the magnetic machine 11 and the voice coil 12c constituting the vibration machine 12 does not vibrate, So that the sound is output.

In the meantime, in the present invention, the elastic support system 13 is a suspension made of a metal-made leaf spring, and is provided with a bullet-proof arm between the inner edge and the outer edge, and the inner edge of the outer edge, The voice coil 12c is vibrated by carcinogens. The voices of the voice coil 12c are connected to each of the inner rims which are not mutually connected with reference to a hypothetical horizontal line crossing the center. And an input terminal of an external alternating signal is provided.

In the present invention as described above, since the two split elastic support systems 13 are electrically separated from each other, the end of the voice coil 12c is connected to each of the split elastic support systems 13, And an alternating alternating signal input is provided to the external alternating signal input terminal.

8, a dome-type dust cap 12b made of a synthetic resin material is insert injection-molded on the inner edge of the elastic support system 13, and a vibration space is expanded in the outer frame portion And an inner bottom 13b for fixing the vibration of the voice coil 12c or the bobbin 12d around which the voice coil 12c is wound or for expanding the vibration space is formed in the inner rim portion And is provided in the same shape as the dust cap 12b.

In the present invention as described above, the dust cap 12b is integrally provided at the center in the one surface side of the elastic support system 13 and the voice coil 12c or the voice coil 12c is wound around the bobbin The voice coil 12c or the voice coil 12c is wound around the bobbin 12d and the dust cap 12b so that the dust cap 12b and the voice coil 12c are fixedly coupled to each other, So that the structure of the fixed connection and the coupling operation are simplified.

More specifically, a dust cap 12b is integrally formed at the center of one side of the elastic support system 13 through insert injection molding, and the voice coil 12c or the voice coil 12c The diaphragm 12a and the dust cap 12b are adhered and fixed to each other in a state in which the package is fixedly coupled to one end of the bobbin 12d wound on the diaphragm 12a. The structure of the coupling and the coupling operation are simplified.

Further, according to the present invention, by applying a leaf spring such as a metallic material which is not easily deformed by an external pressure, rather than a high-deformable cotton material, So that the voice coil can be easily and accurately inserted into the center of the gap of the machine and can be positioned, thereby improving uniformity and accuracy of the output characteristics.

In the present invention, the elastic support system may be formed of a conductive material so as to provide connection portions between the connection portions of the voice coil terminals and an external alternate signal providing unit (e.g., an amplifier) The alternating signal from the output terminal of the amplifier is not transmitted to the voice coil through the gold wire soldered to the diaphragm portion as in the prior art, so that the connection structure of the voice coil and the external Thereby simplifying alternate signaling structures.

The present invention is also characterized in that a vibration space expansion (a vibration space d + expanded by the base of the existing vibration space d + the frame 14 + an outer base 13a) is formed in the outer rim portion of the elastic support system 13, And the voice coil 12c or the voice coil 12c is wound around the bobbin 12d in the center edge portion of the bobbin 12d, By providing the structure for expanding the vibration space of the elastic support system 13 to the elastic support system 13 itself and the frame 14 by providing the inner bottom 13b for coupling or extending the vibration space, Thereby preventing mutual interference with peripheral components when the system 13 vibrates elastically.

Finally, one end (upper surface) of the dust cap 12b in the present invention may be convexly curved as shown in a) of Fig. 9 of the accompanying drawings, 9 (d), and the dusk cap is fixed to the diaphragm 12a made of the same body. In this case, It is possible.

According to the present invention as described above, the high frequency frequency of the speaker 10 according to the present invention can be changed according to the shape of the one end of the dust cap 12b, and also depending on the material, weight, Applicable to high frequency characteristics.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments.

In addition, those skilled in the art will appreciate that many modifications and variations of the present invention are possible without departing from the spirit and scope of the appended claims.

Accordingly, all such appropriate modifications and changes, and equivalents thereof, should be regarded as within the scope of the present invention.

10: Speaker 11: Keyboard
11a: yoke 11b: permanent magnet
11c: plate 12: vibration meter
12a: diaphragm 12b: dust cap
12c: voice coil 12d: bobbin
13: elastic support system 13a:
13b: Inner height reduction 14: Frame

Claims (5)

A magnet machine (11) for forming a magnetic flux in the gap; A vibration system (12) for mutually reacting with the electromagnet (11) according to the inputted alternating signal and outputting sound while vibrating; And a elastic support system (13) for elastically supporting the vibration system (12), the speaker (10)
A dust cap 12b is integrally provided at the center of one side surface of the elastic support system 13 and extends downward in the same chain state as the dust cap 12b so as to protrude partially in the direction of the other surface of the elastic support system 13. [ A voice coil 12c or a voice coil 12c is wound around the bobbin 12d at the center of the other side of the elastic support 13 located at the inner side of the inner base 13b And a bobbin (12b) wound with the elastic support system (13), the dust cap (12b), the voice coil (12c) or the voice coil (12c) is packaged.
The method according to claim 1,
Wherein the elastic support system (13) is a suspension made of a conductive plate spring.
The method according to claim 1,
The elastic support system (13) is provided with a bullet-proof arm between an inner rim and an outer rim. The inner rim of the elastic support system (13) is vibrated by the bulging cancer on the basis of the outer rim fixed to the frame (14) And provides a connecting portion between each of the connection portions of the voice coil terminals and an alternate signal providing portion of the voice coil terminals and provides a connection portion between the voice coil terminals and the external alternating signal providing portion, - providing a path through which an alternating signal is conducted.
The method according to claim 1,
And a dome-type dust cap (12b) made of a synthetic resin material is integrally formed by insert injection molding on the inner edge of the elastic support system (13).
The method according to claim 1,
And an outer bottom (13a) for expanding a vibration space is formed by insert injection molding on an outer rim portion of the elastic support system (13).

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