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JP2012085077

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DESCRIPTION JP2012085077
The present invention provides a speaker and a speaker system having a structure in which only
the diaphragm can perform vibration faithful to an input signal while suppressing the
unnecessary vibration of the basket frame generated by the vibration of the diaphragm of the
speaker and the unnecessary vibration to the entire speaker system. . A drive unit of a plurality of
speakers with a basket frame eliminated and the outer periphery of a diaphragm are connected
at the total point of the transmission vibration direction of the rear, and the transmission
vibration direction is canceled when many speakers are driven in phase. And a speaker system
capable of high quality reproduction by eliminating unnecessary vibration. [Selected figure]
Figure 12
スピーカ
[0001]
The present invention relates to a speaker system for accurately reproducing an input signal.
[0002]
Conventionally, a general speaker comprises parts such as a basket frame, a drive part, a
diaphragm and its edge, and the structure is such that the drive part is attached to one end of the
basket frame and the diaphragm attached to the drive part is vibrated by an input signal I
pronounce it by doing.
[0003]
The edge of the diaphragm is attached to the other end of the basket frame, and the speaker is
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fixed to the speaker box or baffle board by means of screws or the like at this edge attachment
portion, and is operated as a speaker system.
[0004]
Although there were cases in which only the basket frame was abolished, it was not a thing that
actively suppressed the vibration other than the diaphragm.
[0005]
Also, some speakers have two ordinary basket frames connected back-to-back to reduce
unnecessary vibration, but this is the vibration given from the diaphragm to the attachment
portion to the edge support portion of the basket frame or the box etc. Was not considered.
JP, 2008-178133, Patent No. 4064160, JP, 2007-60711, Patent 4081133, JP, 2005-277, 561
[0006]
The problem to be solved by the present invention is to manufacture a speaker in which
generation, transmission and resonance of unnecessary vibration other than vibration based on
an input signal to a diaphragm are eliminated.
[0007]
Another object of the present invention is to manufacture a speaker system which eliminates the
generation, transmission and resonance of unnecessary vibration in the part related to the
installation regardless of the characteristics of the target such as the baffle and the speaker box
to be attached.
[0008]
The basket frame is shaped like a bowl and takes up space in order to escape the sound behind
the speaker cone, but this space blocks and reflects the natural flow of the sound behind the
speaker cone.
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In addition, the complexity of the shape may cause complex unnecessary vibration found in bells
and cymbals, and may generate unnecessary vibration due to the uneven support strength due to
the shape of the basket frame in the high region divided vibration region, It greatly affected the
sound quality.
[0009]
In addition, with regard to the shape of the basket frame, mainly the reinforcement of the basket
frame main body, the device of the mounting position, improvement of the material, and the
shape are made, and even if such improvements are made It was difficult to reduce unnecessary
vibration, for example, the shape became complicated when it was separated from the plate and a
resonance additional sound was produced.
[0010]
When sound is generated by the input of a signal, reverse vibration according to the weight of
the diaphragm and the weight of the air causes the drive circuit to vibrate, which propagates
through the basket frame and vibrates the baffle of the speaker box to be faithful It inhibited the
regeneration.
[0011]
In addition, the diaphragm outer end is attached to the basket frame, where complex vibrations
are transmitted to the speaker box and the baffle board from the edge portion of the diaphragm
outer end through the attachment portions.
In addition, the basket frame immediately behind the diaphragm unbalances the occurrence of
unnecessary resonance and air load on the rear surface of the diaphragm, thus hindering
accurate reproduction of the input signal.
[0012]
In addition, the structure of attaching a heavy speaker on one side at the basket frame outer
peripheral edge attachment causes uneven tension to the basket frame and the baffle plate,
which results in a change in the resonance point of unwanted vibration noise. Yes, it inhibited the
reproduction of the faithful input signal.
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[0013]
In addition, when the basket frame is attached to the speaker system with a screw or the like, the
strength of the basket frame sometimes changes between the screw attachment portion and the
other portion to produce an unnecessary sound.
[0014]
The problem to be solved by the present invention is to manufacture a speaker which is not
adversely affected by the uneven strength distribution of the basket frame as described above,
the uneven mounting strength, and the uneven strength of the mounting portion on the baffle
board. It is to be.
[0015]
Further, the problem to be solved by the present invention is to make it possible to easily
manufacture a speaker system having the above-mentioned function.
[0016]
In order to solve the above-mentioned problems, in the present invention, a plurality of
loudspeakers from which the basket frame is abolished, the other portion of the diaphragm of the
loudspeaker are vibrated relative to each other, from the loudspeaker drive portion and the
diaphragm holding portion It is rigidly coupled by the shapes of the vibration transfer member
and the speaker so as to cancel out at the summing point, to form one speaker and to drive in
phase.
[0017]
In addition, since the speaker made as described above does not require a rigid connection when
attached to a speaker box or the like, and can be attached not to transmit vibration to the outside,
regardless of the characteristics of the object to be attached, It becomes a speaker system which
eliminated generation, transmission, and resonance of unnecessary vibration in a portion
concerned.
[0018]
The loudspeaker according to the present invention uses a plurality of loudspeakers, and the
outer peripheral edge portion and the driving portion of the diaphragm are respectively
integrated by a straight member back to back if two loudspeakers are used, and three or more
loudspeakers Are arranged so that the transmission vibration directions emitted forward and
backward when driving have straight and summing portions, and are combined and created
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there.
[0019]
A member that performs coupling to offset the vibration of the speaker is held by a block-like
spacer portion or a post in order to determine its mechanical position.
[0020]
The above-mentioned columns and block-like spacer portions are intended to accurately hold the
mechanical position so that the positions can be arranged as needed, and it is necessary to
include the total point of the transmission vibration direction. Absent.
[0021]
In addition, a block-shaped spacer portion and a support may be used in combination, and in the
case of using the block-shaped spacer portion, it becomes easy to arrange many speakers.
[0022]
The speaker created as described above eliminates the occurrence, transmission and resonance
of unnecessary vibration other than the vibration based on the input signal to the diaphragm,
and minimizes the resonance of the speaker body, thus high sound quality. Speaker system can
be provided.
[0023]
Further, the speaker according to the present invention can provide a speaker system in which
the generation, transmission and resonance of unnecessary vibration in the part related to the
attachment are eliminated regardless of the characteristics of the object to be attached.
[0024]
In addition, when designing to manufacture the loudspeaker according to the present invention,
using a member having a simple shape also has an advantage that analysis in element calculation
and the like becomes easy.
The loudspeaker according to the present invention, which is composed of members having a
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simple shape, is easy to control resonance and easy to design.
[0025]
Further, the speaker according to the present invention can be prevented from applying
unnecessary stress due to the attachment to the speaker box during the attachment.
[0026]
In addition, since the speaker according to the present invention can suppress unnecessary
vibration with a single speaker, it can be easily attached to the box without any special rigid
connection.
[0027]
Also in the design of the speaker box to which the speaker according to the present invention is
attached, since the vibration from the speaker according to the present invention does not affect
the speaker box, the design becomes easy, for example, the strength is not required much.
[0028]
There is no need for unnecessary weight due to using a large magnet to suppress the reaction
force of the diaphragm.
[0029]
The speaker according to the present invention is manufactured by canceling the reaction at the
total point of the transmission vibration direction using a speaker having two or more
diaphragms. In the case of in-phase driving, the transmission vibration directions cancel each
other, and the diaphragm does not vibrate.
[0030]
Therefore, since this speaker does not transmit vibration to the outside when attached to a box
etc., regardless of the characteristics of the baffle and the speaker box to be attached, generation,
transmission and resonance of unnecessary vibration in the part related to attachment are also
eliminated. It becomes a speaker system.
[0031]
By individually making each member used for this speaker and combining it at the time of
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manufacture, parts can be shared and manufacture can be facilitated.
[0032]
In order to prevent air leakage, a diaphragm ring, a suitable gasket, or a rubber ring of a
vibration-proof material may be inserted into the diaphragm edge portion.
[0033]
In addition, it is not necessary to rigidly couple the speaker box and the present speaker unless
accurate installation is possible and there is no concern such as air leakage from the speaker box.
[0034]
In addition, in this installation, in order to facilitate installation with high accuracy, it may be
installed using a mounting ring, which is usually made of wood material etc. in the case of a
speaker box, ensuring accurate installation accuracy or correcting errors Have an effect on
An example of attachment of the cosmetic ring which is this mechanical holding member is
shown in FIG.
[0035]
In addition, as for the number of speakers used in the present invention, at least two are required
to offset the vibration, but even if there are more speakers, the vibrations can be offset, so the
number can be increased.
[0036]
Further, if it is possible to cancel out the force other than the diaphragm, the diaphragm may be
any of the diaphragm shapes currently used, such as an ellipse, a square, and a polygon.
[0037]
Moreover, the speaker box which accommodates this can also be made into polygonal shape
other than a square, spherical shape, etc. FIG.
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[0038]
In addition, the members connecting the respective members in a straight line from the outer
peripheral edge may be ones in consideration of the air flow and back noise of the diaphragm,
and those having appropriate holes, mesh, pipe, snoko Materials such as metal and punching
metal can be used as needed.
Various materials such as metal, synthetic resin, and vibration control function material can be
used.
[0039]
Moreover, the member which connects the outer peripheral edge in a straight line as required
can eliminate the disturbance of the back sound and improve the sound quality by providing a
change in the flow path of the air to be released.
[0040]
In addition, the member that connects each member in a straight line from the outer edge of the
diaphragm may be any shape as long as it transmits the reaction force from the outer edge to the
back in a straight line. It may be.
[0041]
In addition, a partially air-flowing port may be provided in the sealed pipe-like coupling member
to realize a bass reflex type speaker structure.
It is shown in FIG.
[0042]
In addition, if this is mounted on a speaker box, a speaker system having a complex resonance
structure such as Kelton type can also be made.
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It is shown in FIG.
[0043]
Further, the thickness of the pipe-like coupling member may be changed depending on the
portion to form a transmission line.
This can also be realized by shaping the block-like spacer.
It is shown in FIG.
[0044]
In addition, in the case of having a diaphragm other than the circular diaphragm, it is particularly
necessary to be careful of uneven strength and uneven resonance of members.
[0045]
In addition, if the volume at the back of the speaker can generate the necessary characteristics,
the tubular member can be used as a closed tube like a pipe and used as a closed speaker box.
Of course, the above-mentioned bass reflex type and transmission line type can also be used.
It is shown in FIG.
[0046]
In addition, each member has a necessary and sufficient strength, a structure with a beam, a
holed structure, a structure with a sound absorbing material inserted inside, a structure
supported by a vibration absorbing member from a mechanical position, and a vibration
absorbing treatment at each part High sound quality can be achieved by using a certain speaker
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manufacturing technology.
[0047]
FIG. 1 is a loudspeaker according to the present invention using two loudspeakers.
A vibration transmitting member 2 which receives a reaction by vibration at a driving portion
which is a holding portion of the diaphragm 1 and an outer peripheral edge of the diaphragm 1
is extended rearward from the sound generation direction of the diaphragm 1.
The vibration transmitting member 2 is coupled to the opposite speaker to cancel the generated
vibration.
[0048]
Although there has been an old idea of driving the two speakers back to back in phase, those
conventionally existing do not have a structure in which the basket frame is removed as in the
present invention.
[0049]
Further, in the present embodiment, a support 4 is used to hold a mechanical position between
the two diaphragms 1.
[0050]
FIG. 2 is an embodiment of the present invention using three speakers.
In this example, three vibration transfer members extended in three or more are connected to the
diaphragm 1 and its drive part, and are supported by the support 4 at the center.
[0051]
Further, in FIG. 12, the block-like spacer portion 3 is used in place of the column 4, and the
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vibration transmitting member 2 is integrally shaped with the block-like spacer portion 3.
[0052]
FIG. 4 shows an example in which a plurality of speakers of different sizes are combined.
[0053]
Three small-sized speakers are coupled to the block-like spacer portion 3 via the vibration
transfer member 2 to one large-sized speaker.
[0054]
This is one in which the block-like spacer portion 5 is disposed at the central portion and a
combination of speakers having different areas of the diaphragm 1 is used. In the present
invention, the transmission vibration direction is obtained even if the size of the speaker used in
this way is different. By combining the driving portion and the outer peripheral edge portion of
the diaphragm 1 at the total sum point, generation, transmission and resonance of unnecessary
vibration other than the vibration based on the in-phase input signal to each diaphragm are
sufficiently attenuated. The resonance of the speaker can be suppressed.
[0055]
FIG. 5 shows two pairs of loudspeakers according to the present invention in which two
diaphragms 1 oppose each other via a cylindrical vibration transmitting member 2, using
different diaphragms 1 with different sizes, and a block-like spacer FIG. 9 is an example of an
example in which cross connection is made at a non-right angle by using the part 3 and in which
the distance between the front and rear diaphragms 1 is asymmetric and which is disposed in the
speaker box 5.
[0056]
FIG. 6 is a cross-sectional view of FIG. 5 as viewed from the side.
The block-like spacer portion 3 having a shape including the total point in the transmission
vibration direction in which opposing forces cancel each other has a distorted shape as shown in
FIG. 6 and fulfills the function.
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[0057]
One diaphragm 1 of each of the two crossed speakers is disposed close to one of the speaker
boxes 5 to widen the directivity in the lateral direction and to allow the user to hear a direct
sound.
[0058]
The two diaphragms which are not placed close to each other in this embodiment function to
make the sound field larger.
[0059]
Further, in this embodiment, a resonance preventing member is provided to prevent the
resonance of the block-like spacer portion 3 itself.
[0060]
In addition, the attachment cosmetic ring 6 may be attached between the edge of the diaphragm
1 and the speaker box 5 so as to protect the diaphragm 1 and prevent the speaker from moving
back and forth.
[0061]
FIG. 3 is a view in which the edge portion of the diaphragm 1 is struck on the speaker box 5 with
the above-mentioned decorative ring 6 and a material having an anti-vibration filling action, and
a speaker is attached.
As a result, it is possible to prevent the deterioration of sound quality due to the transmission of
unnecessary vibration to the speaker box 5 and the error of the attachment, and the air leakage
from the attachment point.
[0062]
FIG. 7 shows an embodiment in which the woofer speaker portion of a normal box speaker is the
speaker according to the present invention.
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[0063]
Thus, the loudspeaker according to the present invention can be implemented without changing
the loudspeaker box 5 to the existing shape.
[0064]
FIG. 8 shows an embodiment of the present invention using a circular diaphragm 1, in which the
vibration transmitting member 2 for connecting the outer peripheral edge portions of the
diaphragm 1 is sealed in a cylindrical shape, and the speaker system is completed as it is is there.
[0065]
In this case, the external cylinder is the vibration transmission member 2 and also the speaker
box 5.
[0066]
FIG. 9 is a cross-sectional view of the speaker of the present invention in which a transmission
line is formed by devising the shape of the block-like spacer portion 3 which doubles as the
internal vibration transmitting member 2 in the embodiment according to FIG.
[0067]
In the present embodiment, a sound absorbing member is provided inside.
[0068]
FIG. 10 is a cross-sectional view of an example in which a bass reflex duct is provided to the
vibration transmission member 2 which is also a cylindrical speaker box 5 for coupling the outer
peripheral edge portions of the diaphragm 1 in the embodiment according to FIG. It is.
[0069]
Further, FIG. 11 is an example in which the loudspeaker according to the present invention of
FIG. 10 is further enclosed in a box-like loudspeaker box 5 to be a Kelton-type loudspeaker and a
loudspeaker system.
[0070]
FIG. 13 shows an omnidirectional speaker in which the diaphragm 1 is directed to six faces by
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using six speakers.
[0071]
This is housed in a box-shaped or spherical speaker box 5, or the vibration transmitting member
2 is used as the speaker box 5 as it is.
The application as a sound field type speaker is assumed.
[0072]
The present invention is a speaker in which generation, transmission and resonance of
unnecessary vibration other than vibration based on an input signal to the diaphragm are
eliminated, and at the time of mounting, regardless of the characteristics of the object to be
mounted It is possible to provide a speaker system that can be used as an opposing speaker
consisting of two or more speakers, which eliminates unnecessary generation of vibration,
transmission and resonance, a speaker for high-quality sound reproduction, an omnidirectional
radiation speaker, etc. To be possible.
[0073]
FIG. 1 is a conceptual view of a speaker in which two diaphragms 1 according to a first
embodiment of the present invention are coupled to be opposed to each other.
FIG. 7 is a conceptual view of a speaker in which three diaphragms 1 according to a second
embodiment of the present invention are used so that they have a total point of vibration.
Sectional drawing of the part which attached the speaker of this invention concerning Example 4
of this invention to the speaker box 5 using the makeup ring 6. FIG.
Sectional drawing of the speaker of this invention using several diaphragm 1 from which the
magnitude ¦ sizes concerning Example 3 of this invention differ.
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The external appearance view of the external appearance of the speaker in which the speaker
box 5 concerning Example 4 of this invention is a polygon.
Two pairs of oppositely sized diaphragms 1 are used via the vibration transmitting member 2
according to the fourth embodiment of the present invention, and they are crossed via the blocklike spacer portion 3 FIG. 6 is a cross-sectional view of the speaker of FIG. 5;
The conceptual diagram which made the woofer speaker used for the general box-shaped
speaker box 5 concerning Example 5 of this invention the speaker of this invention.
The external appearance view of the speaker of this invention which the cylindrical vibration
transmission member 2 concerning Example 6 of this invention served as the speaker box 5
again.
FIG. 10 is a cross-sectional view of the loudspeaker of the present invention according to FIG. 8
in which the internal vibration transmitting member 2 and the member which is a block-like
spacer portion 3 according to a seventh embodiment of the present invention form a
transmission line.
Sectional drawing of the speaker of this invention which provided the bass reflex duct in the
vibration transmission member 2 which is also the cylindrical speaker box 5 concerning Example
8 of this invention.
The tubular vibration transmitting member 2 of the speaker of the present invention of FIG. 10
according to Example 8 of the present invention is housed in a box-shaped speaker box 5 having
a hole and a partition without using the speaker box 5 as a Kelton type speaker. The conceptual
diagram of the speaker of this invention.
FIG. 7 is a cross-sectional view of the speaker according to the present invention in which each
diaphragm 1 of the speaker of FIG. 2 according to a second embodiment of the present invention
is joined by a block spacer 3 integrally shaped with the vibration transmitting member 2;
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It is a conceptual diagram of a speaker of the present invention which is a sound field type
speaker using six diaphragms 1 concerning Example 9 of the present invention.
[0074]
DESCRIPTION OF SYMBOLS 1 diaphragm 2 vibration transmission member 3 block-like spacer
part 4 support 5 speaker box 6 makeup ring
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