close

Вход

Забыли?

вход по аккаунту

?

JP2008160640

код для вставкиСкачать
Patent Translate
Powered by EPO and Google
Notice
This translation is machine-generated. It cannot be guaranteed that it is intelligible, accurate,
complete, reliable or fit for specific purposes. Critical decisions, such as commercially relevant or
financial decisions, should not be based on machine-translation output.
DESCRIPTION JP2008160640
The present invention relates to a speaker diaphragm, a speaker, an electronic device and a
device used for an audio device, and the speaker diaphragm having an outer shape of any of a
rectangular shape, a rectangular shape, a track shape, and an elliptical shape. The problem is the
reduction of the resonance, the improvement of the sound quality and the improvement of the
intelligibility. The present invention is to reduce the beating degree of a material to a
microfibrillar state and to be beaten fibers among beaten fibers and fine fibers among the fine
fibers grown in a feather shape from the surface of the beaten fibers. Also, it is made of paper
containing a material in which the entanglement of fine fibers grown in a feather shape from the
surface of the beaten fiber is reinforced, and the vibration is for a speaker having an outer shape
of rectangular shape By configuring the plate, the rigidity and toughness of the diaphragm, and
the Young's modulus are improved, and the clear sound quality with reduced resonance due to
the diaphragm low in the bass range and the characteristic low of the diaphragm unique to the
high range is reduced. It is a configuration that can be realized. [Selected figure] Figure 1
Speaker diaphragm, speaker using the same, electronic apparatus and apparatus using the
speaker
[0001]
The present invention relates to a speaker diaphragm used for various audio devices and video
devices, a speaker using the same, an electronic device such as a stereo set and a television set,
and an apparatus such as an automobile.
[0002]
In the recent audio industry and the automobile industry equipped with audio devices, the spread
11-05-2019
1
of digital devices has dramatically improved the sound quality reproduced from the speakers.
[0003]
The main trends for speakers in these industries are high sound quality, compact and compact.
[0004]
In order to realize sound quality requirements that are user needs in this high sound quality,
there is an urgent need to develop a diaphragm that is a component of a speaker with a high
weight that determines the sound quality.
[0005]
The development of this diaphragm has been advanced centering on a papermaking diaphragm
because it has the advantage of being able to control the sound quality with higher accuracy.
[0006]
Conventionally, kraft pulp obtained from softwood through a beating process has been used as
pulp which is a material used for the paper making diaphragm.
[0007]
Further, in the compact and compact configuration, by setting the external shape of the speaker
to any one of a rectangular shape, a rectangular shape, a track shape, an elliptical shape and the
like, the set can be made compact and compact.
[0008]
Therefore, as for the diaphragm shape used for these speakers, it is also necessary to make the
external shape into a slim shape such as a rectangular shape, a rectangular shape, a track shape,
or an elliptical shape.
[0009]
And in the future, performance improvement of diaphragms and speakers having these slim
outer shapes is required.
[0010]
11-05-2019
2
As prior art document information related to the invention of this application, for example,
Patent Document 1 is known.
Japanese Patent Application Laid-Open No. 63-126400
[0011]
Papermaking diaphragms based on paper diaphragms using kraft pulp obtained from softwood
tend to be generally lower in rigidity due to the material compared to diaphragms made of metal
materials and resin materials The
[0012]
For this reason, conventional paper diaphragms have difficulty in improving the rigidity of
materials, and a speaker using this diaphragm is one of high sound quality, such as high clarity
reproduction, large output, and high reliability. Had the problem of being disadvantageous to
[0013]
Then, this problem is further disadvantageous when the external shape of the diaphragm is a
rectangular shape, a rectangular shape, a track shape, or an elliptical shape, because there is a
portion where the rigidity of the diaphragm is further lowered. It was something I had.
[0014]
The present invention solves the above-mentioned problems, and improves the material rigidity
even if the outer shape of the diaphragm is rectangular, rectangular, track, or oval, and it has
high tone and high tone with tightness in the low tone range. It is an object of the present
invention to provide a speaker diaphragm that can not only provide clear sound quality with
reduced resonance due to lack of a unique diaphragm stiffness but also enable a large output and
high reliability. is there.
[0015]
In order to achieve the above object, according to the present invention, the beating degree of the
material is reduced to a microfibrillar state, and among the beaten fibers and the fine fibers
grown like feathers from the surface of the beaten fibers, beaten Paper containing a material that
strengthens the entanglement of fine fibers grown like feathers from the surface of the beaten
11-05-2019
3
fibers rather than the drawn fibers, and has a rectangular shape, a rectangular shape, a track
shape, or an oval shape. A speaker diaphragm is configured.
[0016]
With this configuration, the degree of beating of the material is reduced to a microfibrillated
state to strengthen the entanglement of fibers for papermaking, thereby improving the
entanglement with other materials and having sufficient rigidity as a speaker diaphragm. And
toughness can be given.
[0017]
The material rigidity of the diaphragm can be improved by the speaker diaphragm.
[0018]
As described above, according to the present invention, the beating degree of the material is
reduced to the microfibrillar state, and the beaten fiber and the beaten fiber among the fine
fibers grown in a feather shape from the surface of the beaten fiber are used. Also, it is made of
paper containing a material in which the entanglement of fine fibers grown in a feather shape
from the surface of the beaten fiber is reinforced, and the vibration is for a speaker having a
rectangular shape, a rectangular shape, a track shape, or an elliptical shape. It consists of a plate,
improves the rigidity and toughness of the diaphragm, and the Young's modulus, and clears the
sound quality by reducing the resonance caused by the tightness in the bass range and the lack
of the diaphragm stiffness peculiar to the high range. In addition to the above, it is possible to
realize a speaker diaphragm that can also provide a large output and high reliability.
[0019]
First Embodiment The invention according to claim 1 and claim 2 of the present invention will be
described below using the first embodiment.
[0020]
FIG. 1 is a plan view of a speaker diaphragm according to an embodiment of the present
invention, and an outline of a frame and a diaphragm suitable for miniaturizing and compactizing
a set such as a television and an audio. It is a speaker diaphragm having a track shape.
[0021]
As shown in FIG. 1, 27 reduces the beating degree of the material to the microfibrillar state, and
11-05-2019
4
among the beaten fibers and the fine fibers grown in a feather shape from the surface of the
beaten fibers, beaten fibers More specifically, a speaker diaphragm having a track-shaped outer
shape is formed by forming a paper containing a material in which the entanglement of fine
fibers grown in a feather shape from the surface of the beaten fiber is reinforced.
[0022]
Here, although the external shape of the diaphragm has been described in the case of the track
shape, it can be applied to a speaker diaphragm having an external shape of any of a rectangular
shape, a rectangular shape, and an elliptical shape.
[0023]
Here, in microfibrillation, it is preferable that the average fiber diameter be smaller than 5 μm,
and further that L / D (average fiber length / average fiber diameter) be 10 or more.
[0024]
The average fiber diameter of microfibrillation is preferably smaller, and by making it smaller, it
is possible to improve the entanglement of the fibers.
[0025]
In addition, L / D (average fiber length / average fiber diameter) is also preferably larger, and by
making it larger, it becomes possible to improve the entanglement of the fibers.
[0026]
The time required for the beating is long, but if the beating degree is set to 1 μm or less of the
average fiber diameter or 500 nm or less, a larger effect can be exhibited.
[0027]
If the average fiber diameter is larger than 5 μm, the power to strengthen the fiber
entanglement tends to be insufficient.
[0028]
Moreover, even if it uses a bamboo fiber for material, it can exhibit a big effect.
11-05-2019
5
[0029]
The reason for this is that bamboo fiber is a material that is highly effective in improving the
rigidity of the diaphragm, and bamboo fiber is easy to reduce the degree of beating to the
microfibrillar state compared to other materials, It is because productivity can be improved.
[0030]
The bamboo fiber is also a good material in terms of the environment.
[0031]
In the following, the background of using bamboo fiber and its contents are explained in detail.
[0032]
At present, materials used as a paper making diaphragm for speakers are mainly softwoods, and
this is a state that spurs lack of softwoods worldwide.
[0033]
On the other hand, with regard to bamboo, due to its strong reproductive power and rapid
growth ability, there are very many types and quantities all over the world, and in specific areas,
there is a situation where bamboo damage is exclaimed.
[0034]
Bamboo grows very fast compared to coniferous trees, and those with a bamboo age of about
one year or less are poor in rigidity and lack toughness, but if one year or more passes, they are
rigid. And have stable physical properties with toughness.
[0035]
Therefore, it has an advantage that its growth rate is orders of magnitude faster than that of
conifers, and can be used for food and the like as soon as it is born.
[0036]
Furthermore, it has the advantage that the original bamboo grove is regenerated immediately
after logging, which does not lead to a situation that adversely affects the global environment like
coniferous forest stalking.
11-05-2019
6
[0037]
Rather, it would be desirable for the global environment to harvest bamboo forests that have
grown too much and eliminate bamboo damage.
[0038]
These bamboos have been developed for many years since their use, but those with bamboo and
juvenile levels within one year of bamboo age have many in food and other aspects due to their
softness and ease of processing. It was often used for the direction.
[0039]
However, with regard to the grown bamboo, which has high rigidity for more than one year of
bamboo age, because of its difficulty in processing due to its rigidity, its usage can only be found
in some building materials and bamboo work, etc. Application development was urgent.
[0040]
As for the application to the papermaking diaphragm for the speaker, although it is dealt with the
ones of silkworms and juveniles within one year of bamboo age from the easiness of
disentanglement of bamboo fiber, the speaker is effective although it has some effect. It did not
reach to the center of the papermaking diaphragm for use.
[0041]
The reason for this is that in order to bring out the characteristics of the original bamboo fiber, it
takes more than one year of bamboo age and rigidity than using a soft and easy-to-process
bamboo within one year of bamboo age or juvenile level It is effective to use grown bamboo fiber
that has high toughness and toughness, but it is technically difficult to disintegrate grown
bamboo fiber properly, so the original bamboo fiber features can be utilized This is because the
diaphragm can not be produced, and the trend can not satisfy the sound quality requirements.
[0042]
However, due to global environmental problems such as desertification due to the recent
shortage of conifers, development of fibers to replace conifers has been a problem.
[0043]
In addition, with regard to papermaking technology, a new material beating technology has been
11-05-2019
7
developed, and it has become possible to form a paper sheet on a diaphragm that makes use of
its features, even for materials that had been considered difficult in the past.
[0044]
From the above background, the content details of the diaphragm for the speaker including the
bamboo fiber will be described below.
[0045]
Bamboo fibers having a bamboo age of one year or more and having grown have rigidity and
toughness, and are compatible with paper pulp, and the rigidity, toughness and Young's modulus
of the diaphragm can be improved.
[0046]
By making this bamboo fiber to be finely beaten to a microfibrillated state to make a paper sheet,
entanglement with paper pulp is further improved, the diaphragm is given sufficient rigidity and
toughness, and Young's modulus is improved. it can.
[0047]
The bamboo fiber referred to here is not particularly limited as long as it is a bamboo family
plant, and it is sufficient if it is a grown bamboo having a bamboo age of 1 year or more,
excluding those of the bamboo age of 1 year or less and the juvenile level.
[0048]
With regard to bamboo age, the minimum rigidity and toughness required for the present
invention can be secured over one year or more, but if it is more than two years, rigidity and
toughness will be further improved, and three more years or more. In the course of the above,
the rigidity and toughness improve more than that.
[0049]
As for the bamboo age, as mentioned above, it is more preferable that the bamboo age is larger,
except for the condition of aging and decay.
[0050]
And, as a feature of the sound quality, it is possible to reduce the resonance caused by the
11-05-2019
8
diaphragm rigidity in the high range, and to obtain a clear sound quality in the high range.
[0051]
In particular, in the case of a speaker diaphragm having an outer shape which is not a circle but a
rectangular shape, a rectangular shape, a track shape, or an elliptical shape as in the present
invention, the diaphragm has a low rigidity portion. Since the influence of the resonance appears
remarkably, it is very effective in these resonance measures.
[0052]
On the other hand, even in the low-pitch range, it is possible to reproduce a good deep bass.
[0053]
As a whole, the sound quality can be good with a high definition and well-defined sound image
localization.
[0054]
As another effect, the toughness of the diaphragm can be improved, and the diaphragm can be
made excellent in quality and reliability.
[0055]
Therefore, it is possible to improve the high input resistance of the speaker using this diaphragm
and various reliability represented by the humidity resistance reliability.
[0056]
Therefore, it is possible to achieve high sound quality of a speaker using this diaphragm, and to
achieve large output and high reliability.
[0057]
Furthermore, the present invention can provide a papermaking diaphragm for speakers that is
inexpensive and environmentally friendly.
[0058]
In addition, the speaker diaphragm can further exhibit the original features of bamboo fiber by
11-05-2019
9
mixing it with a bamboo fiber material having an increased degree of beating.
[0059]
Here, it is preferable that the bamboo fiber material in which the degree of beating is increased
has an average fiber diameter of 5 μm to 30 μm.
[0060]
Furthermore, by including 40 wt% or more of bamboo fibers having an average fiber diameter of
5 μm to 30 μm, the original performance of bamboo fibers can be remarkably exhibited.
[0061]
Here, when the average fiber diameter is smaller than 5 μm, the above-mentioned
microfibrillated state is obtained, which is very expensive.
[0062]
Moreover, when it becomes larger than 30 micrometers, it becomes difficult to exhibit the
original feature of bamboo fiber.
[0063]
Similarly, if the content ratio of bamboo fiber is less than 40 wt%, it is difficult to exhibit the
original features of bamboo fiber.
[0064]
Furthermore, even if a material other than bamboo fiber is included, by combining with a
material in which the degree of beating of bamboo fiber is reduced to a microfibrillated state,
bonding strength is enhanced and the characteristics of bamboo fiber can be exhibited.
[0065]
Of course, it may be mixed with a softwood which is the main material of the conventional
papermaking diaphragm, and the bonding strength is enhanced, and the features of bamboo fiber
can be exhibited.
[0066]
11-05-2019
10
When it contains materials other than bamboo fiber, the performance intrinsic | native to
bamboo fiber can be exhibited notably by comprising so that 40 wt% or more of bamboo fiber
may be included.
[0067]
And, for microfibrillated bamboo fibers having an average fiber diameter of less than 5 μm,
entanglement with other materials is improved by setting the content to 0.5 wt% or more and 20
wt% or less, and the bonding strength between the materials is determined. The physical
property value of the vibrating plate containing bamboo fiber can be made better.
[0068]
Here, if the amount of microfibrillated bamboo fibers having an average fiber diameter of less
than 5 μm is less than 0.5 wt%, the inherent bonding strength is not exhibited, while if it is more
than 20 wt%, the cost is extremely high. Become.
[0069]
Second Embodiment The invention according to claim 3 of the present invention will be
described below with reference to a second embodiment.
[0070]
FIG. 2 shows a cross-sectional view of a speaker according to an embodiment of the present
invention.
[0071]
As shown in FIG. 2, the magnetized magnet 21 is sandwiched between the upper plate 22 and the
yoke 23 to form an internal magnetic circuit 24.
[0072]
A frame 26 is coupled to the top plate 22 of the magnetic circuit 24.
The outer periphery of the diaphragm 27 according to claim 1 is bonded to the peripheral
portion of the frame 26 via an edge 29.
11-05-2019
11
Then, one end of the voice coil 28 is coupled to the central portion of the diaphragm 27, and the
other end is coupled to be fitted into the magnetic gap 25 of the magnetic circuit 24.
[0073]
Although the above has described the speaker having the internal magnet type magnetic circuit
24, the present invention is not limited to this, and may be applied to a speaker having the
external magnet type magnetic circuit.
[0074]
Furthermore, it is also possible to apply to a small speaker in which the diaphragm 27 and the
edge 29 are integrated.
[0075]
With this configuration, as described in the first embodiment, the sound pressure level in the
high range can be improved by configuring the speaker using the diaphragm having sufficient
rigidity and toughness, and the high range can be obtained. Can get clear and powerful sound
quality.
[0076]
And, even in the low frequency range, it is possible to reproduce a good deep bass.
[0077]
As a whole, the sound quality can be good with a high definition and well-defined sound image
localization.
[0078]
Furthermore, it is possible to realize a tone that reduces the sense of distortion.
[0079]
As described above, the diaphragm containing bamboo fiber according to the present invention is
a natural material as well as the material consisting of softwood which has conventionally been
the main body of a papermaking diaphragm, and the natural material has good ear contact, It is
11-05-2019
12
possible to create a sound that makes use of the sound with a good character.
[0080]
In addition, it is possible to realize a straightforward and natural sound creation without being
dominated by the unique tone-like character such as the synthetic material or the metal material
or the uniformity of the timbre by the unique resonance.
[0081]
Therefore, the present invention can be widely applied to the production of sound of speakers in
any and all fields without selecting the field for supplying the speakers.
[0082]
As another effect, compared with a diaphragm made of paper pulp alone, the toughness of the
diaphragm can be improved, and the diaphragm can be made excellent in quality and reliability.
[0083]
Therefore, it is possible to improve the high input resistance of the speaker using this diaphragm
and various types of reliability represented by the humidity resistance reliability.
[0084]
Therefore, it is possible to make the speaker excellent in quality and reliability.
[0085]
In addition, environmental and cost can be greatly contributed.
[0086]
Third Embodiment The third embodiment is used to explain the fourth aspect of the present
invention.
[0087]
FIG. 3 is an external view of an audio mini-component system which is an electronic device
according to an embodiment of the present invention.
11-05-2019
13
[0088]
As shown in FIG. 3, the speaker 30 of the present invention is incorporated in the enclosure 41
to constitute a speaker system, and an amplifier 42 which is a means for amplifying an electric
signal input to the speaker and a source input to the amplifier 42 And an audio mini-component
system 44, which is an electronic device.
[0089]
With this configuration, it is possible to improve the sound pressure level in the high range
which can not be realized conventionally, and it is possible to realize the mini component system
for obtaining clear and powerful sound quality in the high range.
[0090]
Furthermore, a speaker system capable of improving various types of reliability represented by
high input resistance and humidity resistance reliability can be realized.
[0091]
Therefore, the mini-component system can be made excellent in quality and reliability.
[0092]
In addition, environmental and cost can be greatly contributed.
[0093]
Fourth Embodiment The fourth embodiment of the present invention will be described below
with reference to the fourth embodiment.
[0094]
FIG. 4 shows a cross-sectional view of an automobile 50 which is a device of an embodiment of
the present invention.
[0095]
As shown in FIG. 4, the speaker 30 of the present invention is incorporated in a rear tray or a
front panel, and is used as a part of a car navigation system or a car audio system to constitute
an automobile 50.
11-05-2019
14
[0096]
With this configuration, the sound pressure level in the high range of the speaker 30 can be
improved, and clear and powerful sound quality can be obtained in the high range.
[0097]
Furthermore, it is possible to improve various kinds of reliability represented by high input
resistance and moisture resistance reliability which is important as a car speaker.
[0098]
Therefore, it can be made excellent also in terms of quality and reliability, and the performance
and quality of a device such as an automobile equipped with the speaker 30 can be improved.
[0099]
In addition, environmental and cost can be greatly contributed.
[0100]
The speaker diaphragm, the speaker, the electronic device, and the device according to the
present invention are required to be compact and compact, and the sound quality and
characteristics are improved by the rigid diaphragm and the intelligibility such as the sound
pressure level improvement in the high range is improved. Furthermore, the present invention
can be applied to electronic devices such as audiovisual devices and information communication
devices that require high quality and reliability, and devices such as automobiles.
[0101]
Top view of diaphragm for speaker in one embodiment of the present invention Cross section of
speaker in one embodiment of the present invention External view of electronic device in one
embodiment of the present invention of device in one embodiment of the present invention Cross
section
Explanation of sign
[0102]
11-05-2019
15
21 magnet 22 upper plate 23 yoke 24 magnetic circuit 25 magnetic gap 26 frame 27 diaphragm
28 voice coil 29 edge 30 speaker 41 enclosure 42 amplifier 43 player 44 mini component
system 50 automobile
11-05-2019
16
Документ
Категория
Без категории
Просмотров
0
Размер файла
26 Кб
Теги
jp2008160640
1/--страниц
Пожаловаться на содержимое документа