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(2,0 Chi) Patent Application 1, Name of Invention Speaker 11: Where Tokyo TIN Inspired "l" FA
Town No. 512 Name (name) Foster Sakai Co., Ltd. □−14□112. Representativepenetration 4, agent address 〒 1-82 Kojima-cho, Chofu-shi, Tokyo No. 261-6 Chofu Corpus
Room 205 ■ Chosen Office ■ Japan Patent Office ■ JP-A 50-620231 / 11. ! 1-, the
specification 1, title of the invention 1, title of the invention
2, inventor
DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a loudspeaker. In
order to improve the sound quality of the speaker, it is necessary to reduce the stiffness of the
damper or the edge that holds the diaphragm and vibrates together, and to make the linearity of
the speaker displacement characteristics good. Damper, which is a composite of conventional
cloth and resin, is generally known, but it has a large dependency on temperature and humidity,
and has the disadvantage that the intrinsic j oscillation frequency f changes, and the elasticity of
the material itself is poor There is a drawback that mechanical fatigue is likely to occur.
SUMMARY OF THE INVENTION The present invention is directed to ameliorating the abovementioned drawbacks, and to (1) a center support having good linearity and high resistance to
humidity, thereby achieving a stable shed of speaker quality. Although the feature of the present
invention is characterized by using a metal fiber with a thickness of 3 to 30 microns as the center
support of the speaker, some examples of its shape and manufacturing method are used. can
give. (A) The metal fibers (1) are arranged radially as shown in FIG. 1, and a shidun bar and an
edge are made of this substrate. (Ii) A damper and an edge base material in which wefts (2) in the
circumferential direction are inserted so that the metal fibers (1) are arranged radially as shown
in FIG. A damper and an edge base material in which a metal fiber (1) is formed like a cloth as
warps and wefts as shown in FIG. 4) A damper and an edge base material made by forming a
metal fiber (1) which has been cross-cut as shown in FIG. In the above construction, if it is
necessary to bond metal fibers (2) EndPage: 1, if there is a binder, it is possible to use a binder or
heat to weld the fibers. The damper and the edge base material configured as described above
are molded into a predetermined shape using the entire area for molding, and the unnecessary
portion is cut out to form a damper or an edge. In the damper or edge thus produced, the
constituent fibers themselves have high bending elasticity, have spring performance, and have
good linearity. Also, since the main part is metal, there is no humidity dependency. FIGS. 5 (a)
and 5 (b) show dampers made from the base material of FIG. 1. In this case, metal fibers are used
in combination with a thermoplastic resin to bond the fibers. Fig.6 (a), (b) is corn paper made
from the base material of Fig. 2 and pulp is made on the center of the acoustic radiation surface,
and air leakage is stopped at the periphery. Because of the soft resin is "coking" ink. Corn paper
can also be made using the substrates of FIGS. 3 and 4.
Also, in the example of FIG. 6, although it is integrated with the base material of FIG. 2, it may be
used only at the edge portion. As the metal fiber, for example, a strong anti-corrosion material
such as stainless steel is effective. Since the cone edge or damper using the base material of FIGS.
1 and 2 has fibers radially inserted, the difference in partial stiffness at the time of vibration is
small as compared with the configuration of FIG. 3 and 4 have lower manufacturing costs than
those in FIGS. 1 and 2. It is also possible to make a damper or a cone edge alone using these base
materials, or to make a solitary radiation portion and an edge portion of a cone integrally as
shown in FIG. The present invention is a diaphragm, an edge or the like which uses metal fibers
as a fiber cloth or non-woven fabric as a base material as described above. Due to the
construction of the damper, the dependency on the humidity is extremely small, and the fatigue
of the vibrating portion is extremely less than that of the conventional fabric impregnated with
the phenolic resin.
4. Brief description of the drawings. FIG. 1 shows the speaker substrate of the present invention,
FIG. 2 to FIG. 4 and FIG. 4 show other embodiments, and FIG. 5 and FIG. An example is shown, (a)
shows a front view, (b) shows a -r view. 1-- ... Gold A4 fiber, 2 ..... Weft patent applicant Foster
Electric Co., Ltd. Attorney attorney Takayama Toshimi; ', N (5) 67 Figure 20 Figure 5, Figure 5
NCCV) EndPage: 26-14i 1 other than inventor address bundle base Akishima-shi 512 Miyazawacho landing name Foster wire company Co., Ltd. Name in Saka Takahisa Co., Ltd. amount 2 所
place same base V 慕 place f1 ′ ′ 1! -Same place F F praise Zab EndPage: 3