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2 inventor-3 patent applicant "4 representative"-571-Japan Patent Office. ? Japanese Patent
Application Laid-Open No. 50-921216 '16555, Specification 1, Title of the Invention
3. Detailed Description of the Invention The present invention relates to a speaker using a
damper designed to be flame-retardant, and is intended to eliminate the fire in the audio
equipment. In the case of air machine 11, there is a strong possibility of fire, and it is obliged to
fully equip safety measures against fire. In recent years, a fire% from a TV screen receiver and
the like has grown, and measures for preventing fire have been demanded for all electric devices.
There is a growing need to use a speaker Ice to measure fire resistance in the same way. This fL
# Pi, the large input is heated to a considerable temperature by the voice coil ? addition n r c,
this heating burns the fill bobbin, and it burns out to the diaphragm and damper, and it is
sufficient to lead to a fire. 0 It is possible to use aluminum foil for voice fill from 4fP from this,
and measure the improvement of the heat dissipation effect, and also the flame retardant on the
surface of the diaphragm! We form Il and measure fire prevention measures. However, with
regard to the dieper to be coupled to the middle portion of the voice-fill t-S L7t coil bobbin, those
which have taken fire protection measures are still not powerful. That is, as a conventional
damper, is it a synthetic resin agent that adds formability to cloth? There are many things which
are constituted by impregnating, there is a strong possibility that it burns quickly by burning out
the coil bobbin, and a fire is induced, and EndPage: 1 и V% of what I say-и и и Is to eliminate the
above-mentioned conventional drawbacks. , R2 fall, da 2. Par 4, cloth, cotton wool non-woven
fabric-which can be used as a phenolic resin i as a molding agent on any substrate Kp, this
phenolic resin is mixed with anti-coking 1III to make it flame retardant "O ': cTo ?. As the flame
retardant aid for the phenolic resin of solvent type, non-solvent-free polyphosphate and tridi-pro-
moglobin phosphate are used. Next, an experimental example will be described ?-[Experimental
example 1] Damper + 0 made of a cloth molded with an impregnating agent obtained by adding
46 parts of tridipropyl propyl 7 ozofe to A phenol resin 1 o 0 11; / 20 parts, trisive
tetramoprovir fomefate added with 26 parts of trisive tetramoproyl fomefate and molded into a
cloth ?yd- C C phenolic resin 1005 to trizdolopropylofo, 6 parts of sulphoate, 3 parts high speed
polyphosphate Containing 10 parts added, made of cloth-made dampers. 1 above A, B-C!
Damper self-extinguishing test (flame t 10 seconds close test, removal continuous test)! There
were six @ samples each, and the results are shown in the table below. In addition, the damper of
C has less odor and less change in 11 color tone, too.-5712 [Experimental example] The test of
reliability of Dan A, K or D of Tm other than the above Experimental example 10 B and C Damper
made of cloth used as a D-impregnated resin impregnating agent. (1) Heat resistance test In the
atmosphere of the above three types of dampers t-86 ░ C ▒ 2 ░ C, 0 was the deformation over
time, and the results are shown in FIG. The damper D was not subjected to any flame retardancy
treatment and was equivalent to t1??i, and its deformation rate was zero. 2.) Moisture
resistance test 3 types of dampers were also heated at 66 ░ C. 2 ░ C., f1 degree so-, 41
atmosphere and deformation over time 0 Results 1 Not shown in FIG. 2 . The temperature
resistance of the damper C is slightly inferior to that of the damper D, but the difference is small,
and the sufficient usable range is 0 [Experimental example $] I 4 S i ll The same three types of
dampers as in Example 2 were tested for moisture resistance. As the zero condition, temperature
was 66 ░ C ▒ 2 ░ C, humidity? The sugar syrup v, s; 51 shown in FIG. Here too, the
deformation rate of the damper C, together with the dan J-ri-D, is 1. C) 0 or less 0 From these
results, the speaker system of the present invention is a damper made of tridibromopropyl
phosphate and polyphosphate in phenol resin. It turned out that the one by the mixed
impregnating agent is optimal. In addition, K, which is actually a speaker, is attached to the
peripheral portion of the frame member coupled to the zero field portion 1 as shown in FIG. 1-il
bobbin 6 with dice coil 6 wound around By combining and holding the middle portion of this
twill bobbin 6 by the above-mentioned Dan и (?, -1, EndPage: 2 in this configuration, even if the
voice lay kt5 generates heat upon application of a large input, the coil bobbin Even if 6 burns, the
burning is blocked by the damper 7 and the diaphragm AK will be prevented from spreading. As
described above, the speaker of the present invention has the voice coil portion of the coil bobbin
as the burning source. The closest to the WLit damper is that it is difficult to dissolve, and even if
the coil bobbin burns, it works in the direction to block the f +, and the occurrence of fires is
significantly reduced. As a very effective, high social value 0
4. Brief description of the drawings IE1 to 3 Figure 1 is a comparison characteristic diagram of
heat resistance p and moisture resistance of the damper according to the present invention S> K>
FIG. 4 is a cross section showing an embodiment of the speaker according to the present
invention In the figure, To ? @ 1 ииииииииииииииииииииииииииииии 7 lame 114 @ ииииииииииии 11111 IN, 15 @ase и voice
fill, 6 иииииииииииииииииииииииииииииииииииииии? Damper. ????????? J "Censor (" '? ? C C) No. 416 other
agent EndPage: ?
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description, jps5092121
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