JP2008005264A - Speaker, speaker apparatus employing the same, and electronic equipment and apparatus employing this speaker - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To realize excellent low sound reproduction even in a small speaker apparatus with respect to a speaker used for sound equipment and video equipment. <P>SOLUTION: A pressure adjustor 9 is connected to one part of a magnetic circuit 4 as a constituent of a speaker unit to configure the speaker unit. The configuration can materialize low sound reproduction of the speaker apparatus having this speaker unit attached on a small cabinet. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a speaker, a speaker device, and further an electronic device and apparatus used in various acoustic devices, information communication devices, and the like, and more particularly to a speaker that realizes low-frequency reproduction in a small speaker cabinet. is there.

  In recent audio market trends, high-quality playback support is becoming indispensable with the spread of digital audio equipment represented by DVD.

  On the other hand, under the circumstances of housing and the environment surrounding automobiles, space saving and energy saving are being strictly demanded.

  As a speaker and a speaker device that can satisfy the above-mentioned requirements, development of a speaker and a speaker device that are excellent in reproduction of heavy bass is demanded despite being small.

  Based on these backgrounds, the prior art will be described with reference to FIG.

  FIG. 9 is a cross-sectional view of a conventional speaker device.

  As shown in FIG. 9, a speaker device 54 is configured by a cabinet 51, a speaker unit 52 attached to the cabinet 51, and a pressure adjusting body 53 disposed inside the cabinet 51.

  Here, since the speaker device 54 is small in size, it is difficult to reproduce low sound satisfactorily due to the effect of acoustic stiffness exhibited by the empty space of the cabinet.

  As a means for solving the problem of the bass reproduction limit determined by the cabinet volume in order to reproduce the bass sound satisfactorily with the small speaker device 54, a pressure regulator represented by activated carbon or the like is provided inside the cabinet 51. It corresponds by arranging 53.

  Next, the operation of the speaker device 54 will be described.

  When an electrical signal is applied to the speaker unit 52, the pressure in the cabinet 51 changes, and the pressure in the vacant room in which the pressure adjusting body 53 represented by activated carbon or the like is arranged changes.

  Air molecules accompanying this pressure change are adsorbed or released to the pressure regulator 53, and the pressure fluctuation in the cabinet 51 is suppressed.

  As described above, the conventional speaker device 54 can operate as a cabinet having an equivalently large volume, and can reproduce a low sound as if the speaker unit 52 was mounted in a large cabinet while being a small cabinet. Become.

For example, Patent Document 1 is known as prior art document information relating to the invention of this application.
JP-T-60-500635

  However, the conventional speaker device 54 requires an arrangement of the pressure regulator 53 typified by activated carbon or the like inside the cabinet 51 in order to achieve good bass reproduction.

  This is because the pressure regulator 53 itself represented by activated carbon or the like, the physical distribution cost, the production cost for arranging and coupling inside the cabinet 51, or the like, and further processing inside the cabinet 51 is necessary. However, there is a problem that the processing cost is greatly increased.

  An object of the present invention is to solve the above-mentioned problems and to provide an excellent speaker unit capable of suppressing an increase in cost of a speaker device including a pressure adjusting body represented by activated carbon or the like.

  To achieve the above object, a speaker unit according to the present invention includes a magnetic circuit, a frame coupled to the magnetic circuit, a diaphragm coupled to the outer periphery of the frame, and coupled to the diaphragm. A part of the voice coil is disposed in the magnetic gap of the magnetic circuit, and a pressure adjusting body is coupled to the magnetic circuit to constitute a speaker unit.

  With this configuration, pressure regulators such as activated carbon do not exist individually when the speaker device is manufactured, but are already coupled to the speaker unit, so extra costs associated with the distribution and coupling of the pressure regulators. It is possible to suppress the up.

  As described above, according to the present invention, the speaker unit is configured by coupling the pressure adjusting body to a part of the components of the speaker unit.

  With this configuration, since the pressure regulator represented by activated carbon or the like is already coupled to the speaker unit, it is possible to suppress an extra cost increase associated with the distribution cost and coupling cost of the pressure regulator when manufacturing the speaker device. It becomes possible.

  Furthermore, since it is connected to the speaker unit, the pressure adjusting body is disposed inside or near the speaker unit, and a better bass sound is obtained compared to the case where it is disposed away from the speaker unit in the cabinet. It becomes possible to reproduce efficiently.

  Furthermore, since the pressure regulator is coupled to the magnetic circuit of the speaker unit, which is a heating element, a pressure regulator that is generally subject to performance degradation due to moisture should be coupled to the interior of or near the speaker unit where the temperature increases. Therefore, it is difficult to absorb moisture, and performance degradation can be prevented.

  As described above, the present invention can realize good bass reproduction while suppressing an increase in cost even in a small speaker device.

  In addition, it is possible to realize moisture absorption countermeasures of the pressure adjusting body, and it is possible to realize improvements in quality and reliability.

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

(Embodiment 1)
In the following, the first aspect of the present invention will be described with reference to the first embodiment.

  FIG. 1 shows a cross-sectional view of a speaker according to an embodiment of the present invention.

  As shown in FIG. 1, it comprises a lower plate 2 having a center pole 2A, a magnet 1 coupled to the lower plate 2, and an upper plate 3 coupled to the opposite side of the magnet 1 from the lower plate 2. Magnetic circuit 4, a frame 6 coupled to the magnetic circuit 4, a diaphragm 7 coupled to the outer periphery of the frame 6, and a part of the magnetic circuit 4 coupled to the diaphragm 7 and part of the magnetic circuit The voice coil 8 disposed in the magnetic gap 5 and the pressure regulator 9 coupled to the magnetic circuit 4 constitute a speaker.

  Here, an example in which the pressure adjusting body 9 is coupled to the back surface of the lower plate 2 is shown.

  With the configuration as described above, since the pressure adjusting body 9 is already coupled to the speaker unit, an extra cost increase due to the distribution cost and coupling cost of the pressure adjusting body 9 is suppressed during manufacture of the speaker device. It becomes possible.

  Further, since the pressure adjusting body 9 is coupled to the speaker unit, the pressure adjusting body 9 is disposed in or near the speaker unit, and therefore, a better bass sound is obtained as compared with the case where the pressure adjusting body 9 is disposed at a position away from the speaker unit in the cabinet. Can be efficiently reproduced.

  Further, since the pressure adjusting body is coupled to the magnetic circuit 4 of the speaker unit that is a heating element, the pressure adjusting body 9 that is generally susceptible to performance degradation due to moisture is coupled to the inside or the vicinity of the speaker unit where the temperature increases. By doing so, it is difficult to absorb moisture, and performance degradation can be prevented.

  Therefore, even if this invention is a small speaker apparatus, favorable bass reproduction | regeneration can be implement | achieved, suppressing a cost increase.

  In addition, it is possible to realize a moisture absorption measure of the pressure adjusting body 9 and to improve quality and reliability.

  Here, the pressure adjusting body 9 includes a pressure adjusting member 10 and a storage portion 11 of the pressure adjusting member 10, and activated carbon is used as the pressure adjusting member 10.

  Moreover, the pressure adjustment member 10 should just be a material containing not only activated carbon but activated carbon, and favorable bass reproduction | regeneration can be implement | achieved by including activated carbon.

  Further, the storage unit 11 can be made of a breathable material such as a non-woven fabric, so that good bass reproduction can be achieved.

  Furthermore, a gap 9 </ b> A is provided on the coupling surface between the magnetic circuit 4 and the pressure adjusting body 9 and coupled. By setting it as this structure, the surface area which contacts the air of the pressure regulator 9 can be kept large, and low-pitched sound reproduction | regeneration can be implement | achieved efficiently.

  On the other hand, when the use in a humid place is assumed, the storage unit 11 is not a material having air permeability, and the use of a material having no air permeability is effective in terms of quality and reliability. .

  This is to prevent the low-frequency expansion effect from being reduced due to the ingress of moisture into the micropores of the pressure adjusting member 10 typified by activated carbon.

  For this reason, as shown in FIG. 2, it is also effective to further cover and configure the pressure adjusting body with a flexible casing 12.

  Next, the coupling | bond part of the pressure regulator 9 is demonstrated.

  In the above description, the embodiment in which the coupling portion of the pressure adjusting body 9 is coupled to the back surface of the lower plate 2 has been described. However, the present invention is not limited to this embodiment, and the coupling to the magnetic circuit 4 is possible. Any place.

  That is, as shown in FIG. 3, it may be coupled to the center pole 2 </ b> A of the lower plate 2.

  In the case of this configuration, the same effect can be obtained as when the volume of the space surrounded by the center pole 2A, the voice coil 8, the diaphragm 7 and the dust cap of the lower plate 2 inside the speaker is substantially increased. it can.

  Therefore, in addition to the effect of expanding the low range, the effect of reducing distortion can be exhibited, and good sound quality can be realized.

  Furthermore, as shown in FIG. 4, it may be disposed in a hole 2 </ b> B provided in the center pole 2 </ b> A of the lower plate 2.

  When the hole 2B is provided in the center pole 2A as in this configuration, the air in the space surrounded by the center pole 2A of the lower plate 2 inside the speaker, the voice coil 8, the diaphragm 7, and the dust cap is released to the outside. Thus, the low-frequency expansion effect and the low-distortion effect are obtained.

  By arranging the pressure adjusting body 9 in the hole 2B provided in the center pole 2A, the effect can be exhibited more and a good sound quality can be realized.

  That is, the distortion of the air passing through the hole 2B provided in the center pole 2A can be reduced by the pressure adjusting body 9, and the volume expansion effect inside the cabinet can be achieved both inside and outside the speaker. Efficient.

  Furthermore, by arranging it in the hole 2B provided in the center pole 2A, it is in contact with a magnetic circuit that has a large air flow rate and a high temperature during the operation of the speaker. There are also improvements in quality and reliability.

  Furthermore, as shown in FIG. 5, the pressure adjusting body 9 may be coupled to the inner peripheral portion of the magnet, and in this case, it is coupled to the space portion that is normally a dead space, and the space factor is improved. Can be planned.

  In this case, a hole 4A is provided in a part of the magnetic circuit 4 such as the lower plate 2 or the upper plate 3 so that air can be directly circulated with the pressure adjusting body 9 disposed on the inner peripheral portion of the magnet. The effect and the effect of reducing distortion are further increased.

(Embodiment 2)
The second aspect of the present invention will be described below with reference to the thirteenth aspect of the present invention.

  FIG. 6 is a cross-sectional view of the speaker device according to the embodiment of the present invention.

  As shown in FIG. 6, the speaker device is configured by including a speaker 40 in which the pressure adjusting body 9 is coupled to the magnetic circuit described in the first embodiment, and a cabinet 41 to which the speaker 40 is attached. is there.

  With this configuration, it is possible to obtain a speaker device including the pressure adjusting body 9 inside the cabinet 41 simply by attaching the speaker 40 combined with the pressure adjusting body 9 to the cabinet 41 in advance.

  Therefore, since there is no need to separately attach the speaker and the pressure adjusting body to the cabinet as in the conventional case, the distribution cost of the pressure adjusting body and the cost of attaching the pressure adjusting body to the cabinet can be reduced, and the cost is greatly reduced. be able to.

  In addition, various effects described in the first embodiment can be exhibited.

(Embodiment 3)
Hereinafter, the invention described in claim 14 of the present invention will be described with reference to the third embodiment.

  FIG. 7 is an external view of an electronic apparatus according to an embodiment of the present invention.

  In this embodiment, an audio mini-component system, which is an electronic device, is configured by mounting the above-described speaker.

  As shown in FIG. 7, the speaker 40 of the present invention is incorporated in a cabinet 41 to constitute a speaker device, and an amplifier 42 which is an amplifying means for an electric signal input to the speaker and a source input to the amplifier are provided. An audio mini-component system 44, which is an electronic device, is configured by including a player 43 for output.

  By adopting this configuration, it is possible to realize a good bass reproduction while reducing the size and size of the electronic device.

  In this embodiment, an example in which an electronic device is mounted on an audio minicomponent system has been described. However, the present invention is not limited to this, and may be a video device such as a television set or a mobile communication device. That is, the present invention can be applied to all electronic devices equipped with speakers.

  In particular, video devices such as televisions, which have recently been rapidly developed from cathode ray tubes to liquid crystal displays and plasma display panels, have a significant market demand for miniaturization and thinning. The speakers according to the present invention are applied to these video devices. Mounting is particularly effective.

(Embodiment 4)
Hereinafter, the invention described in claim 15 of the present invention will be described with reference to the fourth embodiment.

  FIG. 8 is a cross-sectional view of an automobile which is a vehicle according to an embodiment of the present invention.

  In the present embodiment, an automobile, which is a vehicle, is configured by mounting the above-described speaker.

  That is, the speaker 40 is mounted on the rear tray of the automobile 45.

  By adopting this configuration, it is possible to realize a good bass reproduction while reducing the size and size of the automobile 45 as a vehicle.

  The mounting location on the vehicle is not limited to the above-described rear tray, and may be any location such as a door, ceiling, pillar, floor, instrument panel, or seat.

  Furthermore, although this embodiment demonstrated the example mounted in the motor vehicle as a vehicle, it is not limited to this, A moving apparatus, such as a train and a ship, Furthermore, structures, such as a house, may be sufficient. In other words, the present invention can be applied to all speakers that can be mounted.

  The speaker, the speaker device, the electronic device, and the vehicle according to the present invention can be applied to electronic devices such as audiovisual equipment and information communication equipment that are required to be small and compact and to realize good bass reproduction, and also to vehicles such as automobiles. .

Sectional drawing of the speaker in one embodiment of this invention Sectional drawing of the speaker in one embodiment of this invention Sectional drawing of the speaker in one embodiment of this invention Sectional drawing of the speaker in one embodiment of this invention Sectional drawing of the speaker in one embodiment of this invention Sectional drawing of the speaker apparatus in one embodiment of this invention 1 is an external view of an electronic device according to an embodiment of the present invention. Sectional drawing of the vehicle in one embodiment of this invention Cross-sectional view of a conventional speaker

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Magnet 2 Lower plate 2A Center pole 2B Center pole hole 3 Upper plate 4 Magnetic circuit 4A hole 5 Magnetic gap 6 Frame 7 Diaphragm 8 Voice coil 9 Pressure adjusting body 9A Gap 10 Pressure adjusting member 11 Storage part 12 Sealing case 40 Speaker 41 Cabinet 42 Amplifier 43 Player 44 Mini component system 45 Automobile 51 Cabinet 52 Speaker unit 53 Pressure adjusting body 54 Speaker device

Claims (15)

A magnetic circuit, a frame coupled to the magnetic circuit, a diaphragm coupled to the outer periphery of the frame, and a voice coupled to the diaphragm and part of which is disposed in the magnetic gap of the magnetic circuit A speaker having a coil and a pressure regulator coupled to the magnetic circuit. The speaker according to claim 1, wherein the pressure adjusting body includes a pressure adjusting member and a storage portion for the pressure adjusting member. The speaker according to claim 1, wherein the pressure adjusting body includes a pressure adjusting member and a housing portion for the pressure adjusting member, and the pressure adjusting member is activated carbon or a material containing activated carbon. The speaker according to claim 1, wherein the pressure adjustment body includes a pressure adjustment member and a storage portion for the pressure adjustment member, and the storage portion has air permeability. The speaker according to claim 1, wherein the pressure adjusting body includes a pressure adjusting member and a storage portion for the pressure adjusting member, and the storage portion is formed of a nonwoven fabric. The speaker according to claim 1, wherein a coupling is provided between the magnetic circuit and the pressure regulator in a gap. The speaker according to claim 1, wherein the pressure adjustment body includes a pressure adjustment member and a storage portion for the pressure adjustment member, and the storage portion does not have air permeability. The speaker according to claim 1, wherein the pressure adjusting body is further covered with an airtight case rich in flexibility. The magnetic circuit includes a lower plate having a center pole, a magnet coupled to the lower plate, and an upper plate coupled to the opposite side of the magnet to the lower plate. The speaker according to claim 1, wherein the speaker is coupled to the back surface of the plate. The magnetic circuit includes a lower plate having a center pole, a magnet coupled to the lower plate, and an upper plate coupled to the opposite side of the magnet to the lower plate. The speaker according to claim 1, wherein the speaker is coupled to a center pole of the plate. The magnetic circuit includes a lower plate having a center pole, a magnet coupled to the lower plate, and an upper plate coupled to the opposite side of the magnet to the lower plate. The speaker according to claim 1, wherein the speaker is disposed in a hole provided in a center pole of the plate. The magnetic circuit includes a lower plate having a center pole, a magnet coupled to the lower plate, and an upper plate coupled to the opposite side of the magnet to the lower plate. The speaker according to claim 1, wherein the speaker is coupled to the inner periphery of the speaker. A magnetic circuit, a frame coupled to the magnetic circuit, a diaphragm coupled to the outer periphery of the frame, and a voice coupled to the diaphragm and part of which is disposed in the magnetic gap of the magnetic circuit A speaker device comprising a coil, a speaker in which a pressure adjusting body is coupled to the magnetic circuit, and a cabinet to which the speaker is attached. A magnetic circuit, a frame coupled to the magnetic circuit, a diaphragm coupled to the outer periphery of the frame, and a voice coupled to the diaphragm and part of which is disposed in the magnetic gap of the magnetic circuit An electronic device including a coil and a speaker in which a pressure regulator is coupled to the magnetic circuit. A magnetic circuit, a frame coupled to the magnetic circuit, a diaphragm coupled to the outer periphery of the frame, and a voice coupled to the diaphragm and part of which is disposed in the magnetic gap of the magnetic circuit A vehicle equipped with a coil and a speaker in which a pressure regulator is coupled to the magnetic circuit.

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