KR101364670B1 - Amateur speaker - Google Patents

Abstract

An amateur type speaker is disclosed. The amateur type speaker of the present invention, which outputs sound by receiving an acoustic signal, is connected to a cantilever type core having one end fixed to an inner surface of a housing, a coil installed at a flow end of the core, and a flow end of the core. A diaphragm connected by a pin, and a permanent magnet disposed around the flow stage to form a stator magnetic field,
The permanent magnet is disposed inside the housing while maintaining a predetermined distance from the end of the flow stage rather than the top, bottom and left and right regions of the flow stage so as not to interfere with the flow stage when vibration occurs. And an additional part positioned at the permanent magnet boundary. According to the present invention, since the permanent magnet forming the stator field is disposed at a position spaced apart from the flow end of the core, the interference between the flow end and the permanent magnet can be prevented, thereby enabling the effect of low frequency and high power reproduction. It is possible to provide, and that the flow stage of the core does not interfere with the permanent magnet, thereby providing the effect that the failure rate of the flow stage can be significantly reduced.

Description

Amateur type speaker {ARMATURE TYPE SPEAKEE}

The present invention relates to an amateur type speaker, and more particularly, to an amateur type speaker capable of low frequency and high power reproduction by preventing interference between a core and a permanent magnet forming a stator field.

In general, a speaker installed in various mobile communication terminals such as a mobile phone and the like to generate a ringing sound or a speaker applied to earphones is manufactured and installed in a small size according to the trend of miniaturization of the device.

Such a speaker converts electrical energy into mechanical energy by means of a voice coil existing between the pores, according to Fleming's left-hand law that a current-carrying conductor is forced when it is in a magnetic field. When applied to the voice coil, the voice coil generates mechanical energy according to the magnitude of the current and the magnitude of the frequency, and generates vibrations in the diaphragm attached to the voice coil. Will generate iii).

Among these sound pressures, relatively low sound pressures are generated and used in close proximity to the human ear, and receivers are often referred to as receivers. In contrast, those with relatively high sound pressure and a predetermined distance from the human ear are called speakers.

The magnetic circuit of such a speaker is designed to bridge magnetic flux at right angles to the voice coil existing in the air gap by using a magnet (permanent magnet) and a top plate in the yoke made of ferrous metal. It is adhered to the diaphragm and generates excitation force up and down by the input signal to vibrate the diaphragm adhered to the frame to generate sound pressure. The diaphragm has various wave shapes in order to remove the buckling phenomenon and excellent response during vertical vibration. The shape of the diaphragm acts as a design variable that has the greatest influence on the frequency characteristics.

However, the small speaker of this type, as disclosed in the Republic of Korea Patent No. 10-0412221 (Date: December 24, 2003), a magnet and a top plate installed in the yoke in the frame to form a predetermined magnetic field, A diaphragm for generating sound by a voice coil vibrated by a voice current installed at a lower portion with a predetermined interval thereon has a structure mounted on an inner side step of the frame. At this time, the voice coil is coupled to the bottom of the diaphragm.

The moving coil (coil moving by diaphragm) type speaker has low energy conversion efficiency because the coil is moving structure, the diaphragm (vibration plate) and the coil vibrate together, and the sensitivity is low. There was a difficult problem.

On the other hand, Korean Patent No. 10-1005926 (notice date: January 06, 2011) discloses an amateur type earphone. Such an amateur type earphone includes an amateur type unit for generating sound as shown in FIG. 7, a nozzle unit for transmitting sound in combination with the amateur type unit, and a housing for housing the amateur type unit and the nozzle unit. do. The amateur type unit includes an acoustic sphere for outputting sound on one side and is inserted into and fixed to the housing. The acoustic sphere is disposed facing the front side and is directly connected to the acoustic tube.

However, the armature earphone according to the related art has a low sound pressure sensitivity because the permanent magnet 350 is disposed above and below the driving plate 340 as shown in FIG. 7, and a high magnetic force magnet is used. Since it is difficult to use an expensive magnet (alnico), there is a problem that the production cost increases. That is, since the permanent magnet 350 is installed on the upper and lower portions of the diaphragm 340, it is difficult to expect good sound quality due to unbalance of the balance when the magnetic force of the permanent magnet 350 located in the upper and lower portions is different. There is a problem that the production cost is increased by using an expensive magnet to solve the problem.

In addition, since the core is provided between the upper and lower magnets, the amplitude of the diaphragm is small, which makes it difficult to reproduce low frequency and high output.

Republic of Korea Patent No. 10-0412221 (Notice: December 24, 2003) Republic of Korea Patent Registration No. 10-1005926 (Notice: January 06, 2011)

An object of the present invention is to provide an amateur type speaker capable of low frequency and high power reproduction by preventing the permanent magnet and the core, that is, the diaphragm of the amateur type speaker from interfering with each other.

The object of the present invention is to output a sound by receiving a sound signal according to the present invention, a cantilever type core having one end fixed to an inner surface of a housing, a coil installed at a flow end of the core, a flow end of the core and A diaphragm connected by a connecting pin and a permanent magnet disposed around the flow stage to form a stator magnetic field, wherein the permanent magnet is formed based on an end of the flow stage so as not to interfere with the flow stage when vibration occurs. In the position which is not biased to any one of the lower and left and right regions, it is disposed inside the housing at a predetermined distance from the end of the flow stage, and the ends are arranged at the north pole and the south pole of the permanent magnet. It is achieved by an amateur type speaker, which is arranged to be located at the pole boundary.
The end portion, the extension portion may be formed evenly extending in both directions with respect to the boundary of the permanent magnet.
In the end portion, a portion of the end portion is bent in one direction or the other direction based on the boundary of the permanent magnet to form an extension, the middle of the extension portion and the boundary of the permanent magnet may coincide.
The extension part may be formed in a hemispherical shape, an arc shape or a rod shape.
The permanent magnet may be formed in a hemispherical or circular arc of curvature, such as the hemispherical or arc-shaped extension.
The permanent magnets are composed of two, and each of the permanent magnets may be spaced apart from each other on both sides of the extension part as a boundary line, and may be disposed to be inclined relative to the boundary line so as to surround the extension part on both sides. .

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According to the present invention, since the permanent magnet forming the stator field is disposed at a position spaced apart from the flow end of the core, the interference between the flow end and the permanent magnet can be prevented, thereby enabling the effect of low frequency and high power reproduction. It can be provided.

In addition, the flow stage of the core does not interfere with the permanent magnet, thereby providing an effect that the failure rate of the flow stage can be significantly reduced.

1 is a schematic cross-sectional view showing an amateur type speaker according to a first embodiment of the present invention.
2 is a schematic cross-sectional view showing an amateur type speaker according to a second embodiment of the present invention.
3 is a schematic cross-sectional view showing an amateur type speaker according to a third embodiment of the present invention.
4 is a schematic cross-sectional view showing an amateur type speaker according to a fourth embodiment of the present invention.
5 is a schematic cross-sectional view showing an amateur type speaker according to a fifth embodiment of the present invention.
6 is a schematic cross-sectional view showing an amateur type speaker according to a sixth embodiment of the present invention.
7 is a cross-sectional view showing an amateur type speaker according to the prior art.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the following description of the present invention, the well-known functions or constructions are not described in order to simplify the gist of the present invention.

1 is a schematic cross-sectional view showing an amateur type speaker according to a first embodiment of the present invention.

The amateur type speaker according to the first embodiment of the present invention shown in FIG. 1 outputs sound by receiving an acoustic signal, and a cantilever type core having a fixed end 32 fixed to an inner surface of the housing 20. 30, the coil 40 installed on the flow end 34 of the core 30, the diaphragm 60 connected by the flow end 34 of the core 30 and the connecting pin 50, and flow. It is configured to include a permanent magnet 70 is disposed around the stage 34 to form a stator field.

Permanent magnets 70 of the north pole and the south pole for forming the stator magnetic field is based on the end 34A of the flow end 34 so as not to interfere with the flow end 34 when vibration of the flow end 34 occurs. Rather than being biased in the lower and left and right regions, they are disposed inside the housing 20 at a predetermined distance from the end portion 34A of the flow end 34. The permanent magnet 70 may be formed in a rod-like integral structure, it may be formed in an arc shape.

More specifically, the permanent magnet 70 is not disposed in the region shown by the dotted oval line in FIG. 1, but is disposed at a position spaced apart from the end portion 34A of the flow stage 34.

At this time, the end portion 34A is disposed to be located at the boundary B between the N pole and the S pole of the permanent magnet 70. That is, the permanent magnet 70 is installed inside the housing 20 so that the extension line C extending from the middle of the end portion 34A coincides with the boundary line B of the permanent magnet 70. As a result, as shown in FIG. 1, the permanent magnet 70 is installed at a position spaced a predetermined distance from the end portion 34A on an extension line C extending from the end portion 34A of the flow end 34. Will be. Here, the distance between the end 34A and the permanent magnet 70 means a distance such that the magnetic field of the permanent magnet 70 can reach the flow stage 34 including the end 34A.

Referring to the operation of the present invention configured as described above are as follows.

As shown in FIG. 1, in the state in which the end 34A of the flow end 34 and the permanent magnet 70 of the core 30 are installed at a predetermined interval, the coil 40 is formed through the PC 80. When an electrical signal is applied to the flow stage 34 of the core 30, the upper and lower directions (both directions of the extension line or both ends of the connecting pin in the longitudinal direction, or up or down relative to Figure 1) Will vibrate. In this case, since the fixed end 32 of the core 30 is fixed to the bottom of the housing 20, when the electrical signal is applied to the coil 30, the flow end 34 vibrates.

In this process, the diaphragm 60 connected by the flow stage 34 and the connecting pin 50 vibrates to output sound.

As such, when the vibration of the flow stage 34 is transmitted to the diaphragm 60 to output sound, the flow stage 34 does not interfere with the permanent magnet 70. This is because the end portion 34A of the flow stage 34 is disposed at a predetermined distance from the permanent magnet 70.

That is, the permanent magnet 70 forming the stator field is installed at a predetermined distance from the end portion 34A of the flow end 34, thereby interfering with the permanent magnet 70 during vibration of the flow end 34. The vibration does not occur in this state is not limited to the amplitude.

Thus, not only low frequency and high power regeneration is possible, but also the flow stage 34 is not interfered with the permanent magnet 70, the failure rate of the flow stage 34 can be significantly reduced.

In addition, the permanent magnet 70 is installed in a state spaced apart from the end 34A of the flow end 34, the end 34A is on the boundary line (B) of the N pole and the S pole of the permanent magnet 70 Since it is arranged to position, the interference of the permanent magnet 70 and the end portion 34A is not generated, as well as the permanent magnet 70 can be used at a low cost and high magnetic force magnets. That is, since the permanent magnet 70 is installed in a state spaced apart from the end 34A of the flow end 34, the problem due to the unbalance of the magnetic force of the permanent magnets 70 does not occur. This makes it possible to use magnets with high magnetic force.

 On the other hand, Figure 2 is a schematic cross-sectional view showing an amateur type speaker according to a second embodiment of the present invention.

As shown in FIG. 2, in the amateur type speaker according to the second embodiment of the present invention, the edge 34A of the flow stage 34 is based on the boundary of the permanent magnet 70, that is, the boundary line B. FIG. It is the same as the above-mentioned embodiment except that the extension part 34B extended evenly in both directions is formed.

As shown in FIG. 2, an extension part 34B orthogonal to the flow end 34 is formed or coupled to the end 34A of the flow end 34 so that the flow end 34 of the permanent magnet 70 is formed. The stator field is effectively received. That is, the end portion 34A is provided with an extension portion 34B in both directions (N-pole direction and S-pole direction or both directions perpendicular to the extension line with respect to the extension line) to receive a fixed magnetic field of the permanent magnet 70. Since the area is larger than the end portion 34A, the stator field can be efficiently received.

On the other hand, Figure 3 is a schematic cross-sectional view showing an amateur type speaker according to a third embodiment of the present invention.

As shown in FIG. 3, in the amateur type speaker according to the third exemplary embodiment, a part of the end portion 34A of the flow stage 34 may have a diaphragm in one direction or the other direction based on the extension line C. Is the same as the above-described embodiments except that the extension portion 34C is bent in the formed direction or the opposite direction). At this time, the extension line C extending from the middle of the expansion portion 34C and the boundary line B of the permanent magnet 70 coincide with each other.

As such, the extended portion 34C is formed by bending a portion of the end portion 34A, so that the extended portion 34C does not need to be separately configured, and the stator field of the permanent magnet 70 is efficiently received.

On the other hand, Figure 4 is a schematic cross-sectional view showing an amateur type speaker according to a fourth embodiment of the present invention.

As shown in FIG. 4, in the amateur type speaker according to the fourth embodiment, the permanent magnets 70 are separated from each other, that is, an extension line extending from the center of the extension part 34C by two permanent magnets 70. It is the same as the above-mentioned third embodiment except that each of the diaphragms is disposed to be inclined in both directions (the direction in which the diaphragm is positioned based on the extension line and the opposite direction).

In this way, since each of the permanent magnets 70 are inclined to be spaced apart from each other to surround the expansion portion 34C, the expansion portion 34C can efficiently receive the stator field of the permanent magnets 70.

5 is a schematic cross-sectional view showing an amateur type speaker according to a fifth embodiment of the present invention.

As shown in FIG. 5, the amateur speaker according to the fifth embodiment is the same as the above-described embodiments except that one permanent magnet 70 is formed in a hemispherical shape or an arc shape.

Thus, the hemispherical or arc-shaped permanent magnet 70 is configured to surround the end portion 34A, the extension portion 34B or the extension portion 34C, so that the end portion 34A or extension portion of the flow end 34 ( 34B or 34C can efficiently receive the stator field of the permanent magnet 70.

6 is a schematic cross-sectional view showing an amateur type speaker according to a sixth embodiment of the present invention.

As shown in FIG. 6, in the amateur type speaker according to the sixth embodiment, when one permanent magnet 70 is formed in a hemispherical shape or an arc shape, and is formed in a hemispherical shape or an arc shape, an end of the flow stage 34 is formed. An extension portion 34D having a curvature equal to that of the permanent magnet 70 is formed in the portion 34A.

As described above, the permanent magnet 70 is formed in a hemispherical or arc shape, and the end 34A of the flow end 34 is provided with an arc or hemispherical extension 34D, whereby the flow end 34 is a permanent magnet. The stator field of 70 can be efficiently received.

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 embodiments, but, on the contrary, It is obvious to those who have. Accordingly, it should be understood that such modifications or alterations should not be understood individually from the technical spirit and viewpoint of the present invention, and that modified embodiments fall within the scope of the claims of the present invention.

20 housing 30 core
32: fixed stage 34: flow stage
34A: End part 34B, 34D: Extension part
34C: Extension 40: Coil
50: connecting pin 60: diaphragm
70: permanent magnet 80: PC
B: boundary line C: extension line

Claims (6)

As receiving a sound signal and outputting sound,
A cantilever type core having one end fixed to an inner surface of the housing, a coil installed at the flow end of the core, a diaphragm connected by the flow end of the core and a connecting pin, and disposed around the flow end to form a stator magnetic field. Including permanent magnet to
Wherein the permanent magnet comprises:
The housing is maintained at a predetermined distance from the end of the flow stage in a position not biased to any one of the up, down, left and right regions based on the end of the flow stage so as not to interfere with the flow stage when vibration occurs. Is disposed in the interior, characterized in that the end portion is disposed so as to be located at the boundary between the N pole and the S pole of the permanent magnet,
Amateur type speaker. The method of claim 1,
At the end,
Characterized in that the extension is formed evenly extending in both directions based on the boundary of the permanent magnet,
Amateur type speaker. The method of claim 1,
At the end,
A portion of the end portion is bent in one direction or the other direction based on the boundary of the permanent magnet to form an extension,
Characterized in that the boundary between the middle of the expansion portion and the permanent magnet,
Amateur type speaker. 3. The method of claim 2,
The extension
Characterized in that hemispherical, arc or rod-shaped,
Amateur type speaker. 5. The method of claim 4,
Wherein the permanent magnet comprises:
Characterized in that it is formed in the hemispherical or arc shape of the same curvature as the hemispherical or arc-shaped extension,
Amateur type speaker. The method of claim 3,
The permanent magnet is composed of two,
Each of the permanent magnets,
The intermediate portion of the expansion portion is disposed on both sides spaced apart from each other, characterized in that disposed to be inclined relative to the boundary line so as to surround the expansion portion on both sides,
Amateur type speaker.

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