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JP2000165986

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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
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DESCRIPTION JP2000165986
[0001]
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an
ultra-thin speaker having an auxiliary diaphragm, and more particularly to an ultra-thin speaker
having an auxiliary diaphragm attached to the surface of a diaphragm provided in the speaker. is
there.
[0002]
2. Description of the Related Art FIG. 5 and FIG. 6 show a conventional ultra thin speaker, FIG. 5
is an exploded perspective view and FIG. 6 is a sectional side view. This speaker is used as an
ultra thin speaker such as a general headphone, a notebook computer or a small walkman and a
receiver / recorder, and the cover 10, a diaphragm 20 (My Lar Cone), a yoke disk 30, a sound
ring 40, The magnet 50, the washer 60, the front pole piece 70, and the like are composed.
Although the cover 10 and the yoke disc 30 described above may be integrally formed, the
vibrating membrane 20 is formed of a plastic sheet.
[0003]
Although the structure of such ultra-thin loudspeakers and the materials employed therein have
not changed much and are widely used, the allowable power of these ultra-thin loudspeakers is
Extremely small (about 0.3 W), always generates abnormal noise when the vibrating membrane
vibrates, and the fo value is high, low frequency sound is poor, and the effective frequency band
is narrow (about 1,200 Hz to 10, The sound effect at the time of use is not good because there is
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only 83.4 db (see FIG. 7 for details) when the db value is 1.26 V) and between 000 Hz).
[0004]
SUMMARY OF THE INVENTION An ultra-thin speaker having an auxiliary diaphragm according
to the present invention is composed of a member including a cover, a diaphragm, a yoke disc, a
sound ring, a magnet, a washer and the like. An auxiliary diaphragm is attached to the
diaphragm, and the auxiliary diaphragm is made of a material such as sponge, cloth, paper,
cardboard or insulating cloth, and the auxiliary diaphragm is provided on the vibrating
membrane.
[0005]
That is, the ultra-thin loudspeaker of the present invention is a kind of ultra-thin loudspeaker
having an auxiliary diaphragm, which is a super-thin loudspeaker composed of a cover, a
diaphragm, a yoke disc, a sound ring, a magnet and a washer member. And a front pole piece for
fitting a cap-shaped seat-like yoke disk in the hole at a predetermined position, and fitting the
cap edge of the yoke disk to the outer wall of the hole; A member is provided, the sound ring is
previously attached to the lower side of the vibrating membrane, and is incorporated in the cover
together with the vibrating membrane so that the sound ring can be fitted around the magnet
and the washer, and 2 of the sound ring The lead wire of the book is drawn out and connected to
both ends of the front pole piece of the cover, and an auxiliary diaphragm is attached to the
surface of the vibrating membrane. The auxiliary diaphragm matches the vibrating film and the
surface shape and the auxiliary diaphragm are those vibrating body made of a sponge or cloth or
paper or cardboard or insulating cloth material is to be configured.
[0006]
Such a configuration can produce high tensile strength at high power, and the power it can
receive is larger and wider, has a flat effective frequency band and is free from vibration noise.
The effects of low manufacturing cost can be obtained.
[0007]
BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be
described below with reference to FIGS. 1 to 4. FIG.
The ultra thin speaker of the present invention includes a cover 1, a vibrating membrane 2
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(mylar cone), a yoke disc 3, a sound ring 4, a magnet 5 and a washer 6 and the like. A piece 7 is
provided.
The present invention further improves the composition of the diaphragm 2 of the ultra thin
speaker, and the related members such as the cover 1, the yoke disk 3, the sound ring 4, the
magnet 5, the washer 6 and the front pole piece 7 related thereto. Although the cover 1 and the
yoke disk 3 may be integrally formed, they are all within the prior art category.
[0008]
The configuration method of the vibrating membrane 2 is mainly that the auxiliary diaphragm 21
is attached to the surface of the vibrating membrane 2, the size and the shape of the auxiliary
diaphragm 21 match the vibrating surface of the vibrating membrane 2, and the surface of the
vibrating membrane 2 is completely It can be pasted together.
The auxiliary diaphragm 21 is made of a material such as sponge, cloth, paper, paper board or
insulating cloth, whereby the auxiliary diaphragm 21 constitutes a certain vibrating body
(membrane).
[0009]
When assembling the above-mentioned members, the front pole piece 7 is provided in advance
corresponding to the notch 11 of the cover 1, and the yoke disc 3 in the shape of a cap type seat
body is provided in alignment with the hole of the cover 1, and its cap edge The part 31 is firmly
connected to the outer wall of the hole.
The cover 1 and the yoke disc 3 may be integrally formed. Further, the magnet 5 and the washer
6 are incorporated in the yoke disk 3.
[0010]
The above-mentioned sound ring 4 is previously attached to the lower side of the vibrating
membrane 2 and incorporated in the cover 1 together with the vibrating membrane 2, and the
sound ring 4 surrounds the magnet 5 and the washer 6 and The two conducting wires 41, 42 are
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connected by welding to the two terminals of the front pole piece 7 of the cover 1, respectively,
and the two conducting wires 41, 42 of the sound ring 4 are connected to the circumscribing
conductors 81, 82 It is connected to the connecting seat 9.
[0011]
A net 12 is further attached to the inner wall surface of the cover 1 described above to prevent
the entry of dust and dirt so that the acoustic reaction of the vibrating membrane 2 is not
affected.
Part of the characteristic data of the ultra thin speaker formed by combining the combination of
the diaphragm 2 and the auxiliary diaphragm 21 of the present invention and other related
conventional members is compared with the conventional characteristic data (FIG. 7). Shown in
FIG.
[0012]
According to these test data, conventional ultra-thin speakers can receive 0.3 W of power and a
fairly high fo value, low low frequency volume, and effective frequency band between about
1,200 Hz to 10,000 Hz Because the db value is 83.4 db at 1.26 V, the acoustic effect actually
used is not very good. However, looking at the test data of the present invention, the power that
can be received reaches 1.5 W, and there is surely a somewhat wide and flat effective frequency
band of 400 Hz to 20,000 Hz, and the enhancement of this specific effect is extremely It is clear
that there is an effect of the new type of practical use, and the implementation production of the
present proposal is easy and does not affect the assembly, and the production cost is also
extremely low, so the profit increase effect can be said to be extremely large.
[0013]
Summarizing the above, the present invention is an improvement over the ultra-thin
loudspeakers currently in use, and has a configuration capable of breaking through serious
technical problems, and the effect is remarkable as compared with the same conventional
products.
[0014]
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The ultra thin speaker according to the present invention includes a cover, a diaphragm (my lar
cone), a yoke disk, a sound ring, a magnet, a washer and other members, and the surface of the
diaphragm has one additional auxiliary. The diaphragm is attached, and the auxiliary diaphragm
is made of sponge, cloth, paper, cardboard, insulation cloth, etc., and the ultra thin speaker
composed of these can be received because it has high tension at high power. The power is
enhanced (actually demonstrated in tests and reaches about 1.5 W) and has a slightly wider flat
effective frequency band (between about 400 Hz and 20,000 Hz), no vibration noise and low
manufacturing cost , Has a great effect.
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