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JPS55144488

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Notice
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complete, reliable or fit for specific purposes. Critical decisions, such as commercially relevant or
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DESCRIPTION JPS55144488
BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 and FIG. 2 are front and sectional views showing
an embodiment of a loudspeaker according to the present invention, and FIG. 3 is an output
sound pressure frequency characteristic diagram of the loudspeaker, FIG. FIG. 5 is a plan view
and a side view showing another example of the auxiliary skin, and FIGS. 6 and 7 are a plan view
and a side view showing another example of the auxiliary skin. DESCRIPTION OF SYMBOLS 1 иииии
Cone-like diaphragm, 2 иииииииииииииииииииииииии Voice coil, 4 иииииииии Permanent magnet, 5 иииииии Pole piece
иииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииии
ииииииииииииииииииииииииииииииииииииииииииииииииииииииииииии иии .... Auxiliary skin. In the drawings, the same reference numerals
indicate the same or corresponding parts.
DETAILED DESCRIPTION OF THE INVENTION This invention relates to a loudspeaker having a
cone-shaped vibrator formed of a honeycomb structure. In the case of the low frequency speaker,
the honeycomb core was used as the center, and skins were attached to both sides of the low
frequency speaker. There is a so-called honeycomb structure in which a diaphragm (cone) is
formed. In the case of this Sendai, a honeycomb core is used as a, 2 / no, or bi-normium, and as a
skin, GFRP (glass fiber reinforced plastic is a glass fiber reinforced plastic), mica, aluminum or
the like is used. These materials have a large Young's modulus, so the internal loss of the material
itself is small. Therefore, compared to the paper cone, the divided vibration occurs at the quotient
frequency, and there is an Ori point which spreads from the piston vibration gold area or the
curve kA1 in FIG. As shown, there has been a drawback that the peak of the response due to the
divided vibration is oriented. This invention has been made to eliminate the above-mentioned
drawbacks of the prior art, and it is a ring for providing a plurality of divided vibration
generation frequencies on at least one surface of the inner peripheral rib of the Y-shaped
diaphragm of the honeycomb structure. It is an object of the present invention to provide an
output sound pressure frequency characteristic or a good sneaker by putting an auxiliary sound
in the form of 1). Hereinafter, the present invention will be described in detail based on the
11-05-2019
1
illustrated embodiment. 1 and 2 show an embodiment of the present invention, in which l
represents a honeycomb-shaped vibration formed by a honeycomb structure having a
honeycomb core 10 as a central core and a skin 11.11 attached to both surfaces thereof. A plate
2 is a bobbin, 3 Lt 7 1 inch coil, 41-L permanent magnet, 5 is a pole piece, 6 is a field, 7 is an
edge, and 8 is a cap. The nl "ml diaphragm 1 has a flat ring-like ? self-help skin 12.12 on the 1II
11 face of the inner circumference, and is star-shaped. The auxiliary skin 12 is a shell having a
physical property with the skin 11 of the honeycomb structure, and the measure is G. One person
P (in this case, the honeycomb forged body is used other than GFRP for the skin) ? ), CFRP
(carbon ##, fiber reinforced silastic), and so on. As described above, when the auxiliary skin 12
formed of a material having different physical properties from the honeycomb skin 11 is
contained on both sides of the diaphragm 1 of the honeycomb structure, the output sound
pressure frequency noon is shown in FIG. It becomes as shown. That is, the button raw wd wave
number of one division vibration is dispersed into two, and the heater is much lower than the
conventional one. If the number of ropes matches the peak generation frequency with this
viscous, ? -'I & component, or if it is out of the normal use range from the beak production
point, the frequency may be high due to (a) etc. Sufficient sound quality can be obtained even
when it comes out.
On the upper h side, the auxiliary skin 12 differs in physical properties from the skin 11 of the
honeycomb structure-a! Made of similar materials, or different materials as shown in FIG. 4 and
FIG. 5, but made into rings by alternately arranging aluminum sector 12A and GF sector 12B.
You may use a boat. Also, as shown in Fig. 6 and Fig. A7, four different fan-shaped members
12B1.12B formed by using the same kind of material as the skin 11 of the honeycomb structure,
for example, GF) LP, are alternately arranged. Even if it is in the form of a link, it is inferior to the
case of the material of the different crosspieces, or there are young fruits with improved
characteristics compared to the conventional one. Even if the auxiliary skin 12 is provided with
? on one side of the diaphragm 1, the same effect can be obtained. In this case, it is desirable to
provide it inside. As described above, according to the present invention, it is possible to use a
simple skin of a bamboo skin with an auxiliary skin made of multiple dams for changing the
number of brothers and sisters of the divided vibration on the inner circumferential portion of
the cone-shaped peristaltic plate of the nicham structure. It is possible to improve the number
characteristic of the output sound pressure period ? by pre-steering.
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