KR100541561B1 - Micro speaker unit for fatigue decrease - Google Patents

Abstract

The present invention relates to a small speaker unit that can be used in earphones, headsets, mobile phones, or bone conduction receivers for the hearing impaired. Particularly, the present invention provides an acoustic emission unit on a magnet side of a magnetic circuit unit where magnetic is less emitted. Due to the housing housing the circuit part, magnetic lines of force can be shielded, and the magnetic field acts on the hemoglobin containing iron (Fe) due to the magnetic field, causing blood flow to stagnate. The present invention relates to a compact speaker unit that can significantly reduce fatigue and fatigue.

Miniature speaker unit for reducing fatigue according to the present invention is a discharge hole is formed for the sound discharge portion, the housing having an opening and the receiving portion; A magnetic circuit part including a magnet, a plate arranged on the magnet, and a voice coil arranged in a shape surrounding the magnet and the plate, the magnetic circuit part being arranged in a receiving part of the housing; A diaphragm is connected to a lower portion of the voice coil, and an edge of the diaphragm is arranged to cover the opening of the housing ; And a printed circuit board connected to the voice coil.

Loudspeaker, receiver, voicecoil, sound vent, magnetic flux density, shielding, fatigue, hemoglobin

Description

   Mini speaker unit for fatigue reduction {MICRO SPEAKER UNIT FOR FATIGUE DECREASE}

1 is an exploded perspective view of a speaker unit according to the present invention;

2 is a cross-sectional view of the coupling of the speaker unit according to the present invention;

3 is a cross-sectional view of a conventional speaker unit,

4 is a graph illustrating a result of acoustic comparison between the speaker unit of the present invention and the speaker unit of FIG. 3 using an acoustic analyzer.

<Description of the symbols for the main parts of the drawings>

S: Speaker unit 10: Housing (FRAME)

10A: Receptacle 11: Sound Exhaust Hole

13: base 15: first step

17: second step portion 19: departure prevention jaw

20: magnetic circuit part 21: magnet (magnet)

23: Plate 25: voice coil

30: diaphragm 40: cap

50: protection net 60: printed circuit board

The present invention relates to a small speaker unit that can be used in earphones, receivers, headsets, mobile phones, or bone conduction receivers for the hearing impaired,

Particularly, in the case of the conventional small speaker unit, the sound emission part is formed on the plate side of the magnetic circuit part, in which a large amount of magnetism is uniformly emitted.

According to the present invention, the magnetic emission line is formed on the magnet side of the magnetic circuit portion which emits less magnetism, and furthermore, the magnetic force line can be shielded by the housing accommodating the magnetic circuit portion, and the attraction force acts on the hemoglobin containing iron by the magnetic field. The present invention relates to a compact speaker unit that can dramatically reduce the occurrence of pain and fatigue, such as a headache, even when the speaker is used for a long time due to the congestion of blood.

Prior art related to small speaker units

The sound of the corporation related to the fixing of the yoke serving as the housing, the magnet and the yoke ring embedded in the yoke, and the printed circuit board (PCB) located outside the yoke by means of rivets, not adhesives. Tel's Utility Model Registration No. 0254790 (Nov. 2001) 『Earphone Speaker Assembly Structure』, and

Utility Model Registration No. 0330088 of Daelim Acoustics Co., Ltd., which is related to the coating of the frame and cap forming the exterior of the speaker unit with an insulating material in order to prevent the user from being surprised or uncomfortable due to short and poor insulation. 02) There is a small speaker unit.

In the case of conventional small speaker products including the two registered utility models, the sound emission unit consistently utilizes the side where the plates are arranged in the magnetic circuit unit including the magnet, the plate (sometimes referred to as 'yoke'), and the voice coil. have.

In this case, due to the magnetic induction effect due to the plate, the magnetism is discharged much toward the plate side to increase the magnetic flux density, and the magnet side in the opposite direction has a low magnetic flux density.

Furthermore, the effect of reducing the magnetic flux density on the magnetic flux side is further increased by the shielding effect of the housing (or represented by the frame) surrounding the magnetic circuit part.

In the case of a conventional small speaker, when the magnetic flux density of the plate side, and eventually the sound emitting part is large, the iron contained in the hemoglobin of blood is attracted to cause blood flow congestion. When using an article such as a telephone or a bone marrow receiver for the hearing impaired for a long time, a problem such as a pain and a feeling of fatigue such as a headache occurs.

The present invention has been proposed to solve the problem that the magnetic is concentrated toward the sound emission unit in the conventional small speaker.

Accordingly, the present invention arranges a magnetic circuit part consisting of a magnet, a plate, and a voice coil in the housing, and has a sound discharge hole for the sound emission part formed in the housing, thereby reducing the magnetic flux density toward the sound emission hole adjacent to the skin, thereby reducing headaches and the like. It is an object of the present invention to provide a compact speaker unit that can reduce the pain and fatigue (hereinafter referred to collectively as 'fatigue' in combination with this).

In addition, an object of the present invention is to provide a small speaker unit configured with a sound discharge hole so that there is no problem in the sound quality associated with the volume, sound, etc. due to the change in the direction of formation of the sound discharge unit.

In order to achieve the above object, a small speaker unit for reducing fatigue according to the present invention includes a discharge hole for the sound discharge portion, the housing having an opening and a receiving portion; A magnetic circuit part including a magnet, a plate arranged on the magnet, and a voice coil arranged in a shape surrounding the magnet and the plate, the magnetic circuit part being arranged in a receiving part of the housing; A diaphragm connected to a lower portion of the voice coil and having an edge fixed to the housing to cover an opening of the housing; And a printed circuit board (PCB) connected to the voice coil, and the sound generated from the diaphragm is directed through a discharge hole for the sound emission unit of the housing toward the magnet side of the magnetic circuit unit. Is released.

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

In the description of the speaker unit according to the present invention, if the direction reference is specified with reference to FIGS. 1 and 2, the housing 10 side of the speaker unit S is set to the bottom and the cap 40 is set to the top.

In FIG. 2 related to the present invention and in FIG. 3 related to the conventional speaker unit, the reference numerals having the same tens digit and one digit indicate a member having the same function. It can be regarded as a member corresponding to the above.

First, in FIG. 1 and FIG. 2, the speaker unit S according to the present invention includes a housing 10, a magnet circuit 21 mounted in the housing 21, a plate 23, and a voice coil 25. ), A cap 40 for protecting the magnetic coil part 25 and the diaphragm 30, and a hollow 41 of the cap 40 are covered with the voice coil 25 below. It consists of a protection net (50), and a printed circuit board (Printed Circuit Board (PCB)) (60) to prevent foreign matter from penetrating.

The small speaker unit (S) according to the present invention is applied to an article for listening to sound by wearing in the form of direct contact with the skin, such as an earphone, a receiver, a headset, a mobile phone, or a bone marrow receiver for the hearing impaired, It is used to prevent the increase of fatigue due to stagnation of blood flow due to the attraction of iron to hemoglobin containing iron.

In the magnetic circuit unit 20, the magnet 21 uses a permanent magnet as a core part, and the plate 23 serving as a passage for the magnetic force line is arranged on the magnet 21. The magnet 21 and the plate 23 are donut-shaped, but may be deformed into disc-shaped ones as necessary. The plate 23 causes the magnetic field to concentrate towards the plate.

The voice coil 25 of the magnetic circuit unit 20 passes through the Printed Circuit Board (PCB) 60 to which current is applied from an external power source. Repulsion with the magnetic field formed by)) vibrates up and down according to Fleming's left hand law.

The vibration of the coil 25 is transmitted to the diaphragm 30, the sound is generated as the air is compressed by the vibration of the diaphragm 30 to generate a sound.

Sound generated from the diaphragm 30 is directed to the upper and lower portions of the diaphragm 30.

In the conventional small speaker, the sound discharge unit is configured by using the sound directed to the upper portion of the diaphragm 30, but in the present invention, the sound directed toward the magnet 21 side of the magnetic circuit part 20 is lowered. A sound emission unit for use is constituted.

In the housing 10, the main acoustic discharge hole 11A in the center as the discharge hole 11 and a plurality of auxiliary acoustic discharge holes 11B arranged around the main acoustic discharge hole are provided in the housing 10. Formed.

The auxiliary sound discharge hole 11B is for ensuring sound quality related to volume and sound feeling.

The housing 10 has a receiving portion 10A and an opening 10B for the magnetic circuit portion 20.

The outer appearance of the housing is similar to a stack of cylinders having different heights and different diameters. Specifically, the housing 21 has a diameter to allow the magnet 21 and the plate 23 to be inserted through the opening 10B. And a base portion 13 having a thickness and having the main acoustic discharge hole 11A formed therein, a first step portion 15 that rises from the base portion 13 and extends to the outer edge, and rises again from the first step portion. It consists of a second step 17 extending to the outer edge.

The auxiliary acoustic discharge hole 11B is formed in the first stepped portion 15.

The first and second stepped portions 15 and 17 and the outermost departure preventing jaw 19 of the housing 10 are formed with a cutout part 10a cut out to draw out a cord wire (not shown). .

One end of the voice coil 25 extends through the lead portion 10a and is connected to the printed circuit board 60 to receive a current.

After the magnetic circuit unit 20 is mounted in the receiving portion 10A of the housing 10, the diaphragm 30 having the voice coil 25 fixed to the lower portion of the housing 10B is inserted into the opening 10B. Cover 10B.

The diaphragm 30 is fixed in such a manner that an edge of the diaphragm is interposed between the housing 10, in particular, the second step 17 and the rim 43 of the cap 40. Take it.

The cap 40 outside the edge 43, the portion of the housing 30 outside the second step 17, and the magnet 21 and the plate 23 do not disturb the vibration of the diaphragm 30. It is not in contact with the diaphragm in order to prevent it.

The voice coil 25 surrounds the magnet 21 and the plate 23 in a spaced apart form, and more specifically, is located in a magnetic field forming the magnet 21.

In addition, the diaphragm 30 has a dome portion and a dome portion at the center of the central portion from the coil 25 connection portion 31, but various modifications are possible.

The outer diameter of the rim 43 of the cap 40 has a size such that the outer circumferential surface thereof can contact the inner circumferential surface of the release preventing jaw 19 of the housing 10, so that the outer circumferential surface of the cap 40 may not be lifted finely even when vibration or other impact of the diaphragm is possible. It is supposed to be.

The hollow 41 of the cap 40 is covered by a protective net 50 having a fine mesh (茫 目) to prevent foreign substances such as dust from entering the inside.

The size and shape of the protection net 50 corresponds to the size and shape of the cap 40 for the convenience of assembly of the speaker unit (S).

In addition, the printed circuit board (PCB) 60 that receives current from a power source is arranged on the protection net.

In the speaker unit S as described above, the housing 10, the magnet 21, the plate 23, the diaphragm 30, the voice coil 25, the cap 40, the protection net 50, and the printed circuit board ( Printed Circuit Board (PCB) (60) The contact surfaces of each other are joined through a suitable adhesive. However, it is possible to use other coupling means, for example welding of solder or the like, rivets, bolts or the like.

Figure 3 shows the product of the Republic of Korea C company as a conventional general speaker unit in contrast to the speaker unit (S) according to the present invention.

In FIG. 3, there is no hole in the housing 110, and a printed circuit board (PCB) 160 is arranged outside the stepped portion of the housing 110, and the sound emission portion covers the housing 110. The central sound exhaust hole 111 of 140 is made to function.

Japan's KANETEC with no power applied. When measuring the magnetic flux density by using the magnetic flux density measuring instrument (Gaus Meter) of Co., Ltd,

In the sound emission hole 11 side of the speaker unit (S) according to the present invention, about 15 to 30 Gaus is measured,

In the speaker unit illustrated in FIG. 3, the magnetic flux density of 250 to 300 Gaus was measured at the sound emission hole 111 of the cap 140.

This result may be because the plates 23 and 123 of the magnetic circuit part act as magnetic path lines, so that magnetic induction effect due to the plate is generated and the magnetic flux density is concentrated toward the plate.

In addition, when arranging the acoustic discharge hole 11 for the sound generating unit toward the magnet 21 as in the present invention, the degree of reduction of the magnetic flux density is increased due to the shielding effect by the housing 10 itself.

The magnetic force line shielding effect of the housing 10 is further increased when the housing is made of a conductive material such as a conductive material, particularly aluminum or iron.

Due to such a difference in magnetic flux density, in the case of the speaker unit of FIG. 3, the degree of pulling iron-containing hemoglobin is stronger than that of the speaker unit (S) of the present invention, so that blood flow is stagnated more severely, and thus a migraine may occur. Brain and ear fatigue will be increased.

社의 제품번호 2012 Audio Analyzer를 이용하여 단품상태의 조건에서 측정한 결과이다. Next, the acoustic comparison graph shown in FIG. 4 is a Danish acoustic analyzer for the speaker unit of FIG. 3 and the speaker unit of the present invention.

The result was measured under the condition of single product using the product number 2012 Audio Analyzer.

For the same sound source, the dB of the speaker unit according to the present invention was measured higher in the region of 300 Hz to 3,400 Hz, especially 400 Hz to 3.4 Hz, and the sound quality was found to be better.
In addition, the air in the air can be smoothly introduced into and out of the housing through the acoustic discharge hole 11 formed in the housing 10, so that the magnet 21 and the plate can be operated even when the speaker unit S is operated for a long time. Heat generated in the magnetic circuit 20, in particular the voice coil 25, consisting of the 23 and the voice coil 25 is cooled, and this air cooling effect is generated in the speaker unit according to the present invention as compared to the conventional speaker unit This can be reduced by more than 50% and even 80%.
Therefore, when using the speaker unit (S) of the present invention can prevent malfunction or failure of the speaker due to heat, and even when the user uses an item such as earphones or mobile phones for a long time to feel the discomfort or anxiety caused by the heat generated Problems can be prevented.

As described above, the compact speaker unit for fatigue reduction according to the present invention, which can be used in a headset, a mobile phone, or a bone conduction receiver for the hearing impaired, has a sound emission side of the magnetic flux with less concentration of magnetic flux, more specifically, a housing. By reducing the magnetic flux density toward the acoustic discharge hole adjacent to the skin to be formed in the discharge hole of the skin as much as possible to reduce the pain and fatigue, such as headaches, the speaker unit according to the present invention is the volume due to the change in the direction of the sound discharge portion There is no problem with sound quality related to sound and sound.

Although the speaker and the conventional well-known technology are omitted in the above description, those skilled in the art will naturally be able to infer and deduce this.

In addition, in the following description of the present invention with reference to the accompanying drawings, a speaker unit having a specific shape and structure, but the present invention can be variously modified and changed by those skilled in the art, such variations and modifications are within the scope of the invention Should be interpreted as belonging.

Claims (8)

A discharge hole for the acoustic discharge unit, the housing having an opening and a receiving unit; A magnetic circuit part including a magnet, a plate arranged on the magnet, and a voice coil arranged in a shape surrounding the magnet and the plate, the magnetic circuit part being arranged in a receiving part of the housing; A diaphragm connected to a lower portion of the voice coil and having an edge fixed to the housing to cover an opening of the housing ; And It includes a printed circuit board connected to the voice coil, The sound generated from the diaphragm is a small speaker unit for reducing fatigue emitted toward the magnet side of the magnetic circuit portion through the discharge hole for the sound discharge portion of the housing . According to claim 1, wherein the discharge hole for the acoustic discharge portion of the housing A small speaker unit for fatigue reduction, comprising a main main exhaust hole in the center, and a plurality of auxiliary sound exhaust holes arranged around the main sound discharge hole. The method of claim 2, The exterior of the housing includes a base formed in the lower portion of the housing and a first step portion rising from the base, The main acoustic exhaust hole is formed in the base portion, the auxiliary acoustic exhaust hole is formed in the first stepped portion Small speaker unit for reducing fatigue. The method according to any one of claims 1 to 3, A small speaker unit for reducing fatigue, characterized in that it further comprises a cap covering the opening of the housing in a state spaced apart from the diaphragm, the through-hole is formed. The method of claim 4, wherein The through- hole formed in the cap is a small speaker unit for reducing fatigue, characterized in that the cover is covered by a protective net. The method of claim 4, wherein The diaphragm is a compact speaker unit for reducing fatigue, characterized in that the gap is fixed between the housing and the cap that the edges are in contact with each other. The method of claim 4, wherein The printed circuit board is a small speaker unit for reducing fatigue, characterized in that fixed to the top of the cap. The method according to any one of claims 1 to 3, The housing is a compact speaker unit for reducing fatigue, characterized in that the conductive metal material.

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