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-Patent application January 1972, the President of the Japan Patent Office 1, the title of the
invention 2, inventor's mail ll51'-0 Tokyo GWU ward God B 萌 bil + 2nd addition No. 5 main
owner deletion, list of accompanying documents ( 4) Request for application 1 copy ■ Japan
Patent Office Open Patent and Gazette ■ Japanese Patent Application Publication No. 48-77822
request for examination request (all 3 pages) 11 "in the Office Rican No. 0: Japan classification
category /, f′′4 Name of the speaker 2 J 2 J 1 l Jl 嘲 壺 壺 壺 壺 求 失 失 41 41 [J and based
on a mixture of artificial fibers alone or mixed. In the speaker diaphragm made into a sheet by
mixing collagen 懺 1 # fc-into a sheet, heating, molding or drying by heating, a cone part and an
edge part? @Motorplate for speakers characterized in that it is integrally molded, and a collagen
砿 鞭 is mixed with a cone part VC2G to a 5 υ East Q tine part I / c 50 to 100 ti amount to be
blended. Detailed Description of the Whistle The present story relates to the improvement of the
loudspeaker diaphragm: The importance of the influence of the quality of the speaker on the
reproduction of the Hai-Fi does not fall under the theory of Fi. In general, the frequency
characteristics of a speaker can be considered as being divided into bass, mid-tone and treble
characteristics rather than vibration. Among them, in the bass characteristic, emphasis is placed
on the vicinity of the bass resonance frequency, and therefore, Q of the speaker, that is, about
riα 7 flVcj 14 is spread. If ct is too large, a peak of characteristics will occur around this
frequency, and if the ct is too small, the characteristics will drop from high R-wave numbers if q
is too small, and the bass reproduction will be sufficient. 2 Mid-tones IJ where transient
characteristics are also in the state of over-braking. In J 啼, the cone from the low range to the
midtone 1 · 1 together with the piston 1! Because it moves, its characteristics are flat, but its
frequency is higher than a certain frequency in the midrange (in which the edge and cone vibrate
in opposite phase to make the characteristics (valleys increase distortion and sound quality is
degraded). When the q & of the edge is wide, the sound radiation from the edge is large 0 and
the valley of the characteristics is deep. On the contrary, if the width of the edge is narrow, the
valley of the characteristics becomes small, but in the low tone region where the cone vibration is
large, the linearity is deteriorated and the non-linear distortion is increased and the sound
resonance is increased. Therefore, it is necessary to reduce the valley of the characteristics in the
midrange, and therefore selection of the material, shape and size of the edge is a matter of
course. The material of corn and honey is also used to make paper such as Japanese paper or
pulp, etc., and paper such as pulp or other fibers or porous paper EndPage: 1 foam, synthetic
compound IIW of sex is appropriately mixed. In the fixed edge, since it is mainly made of the
same paper fiber as the cone, it becomes hard and causes non-linear distortion.
If this is to be improved, it is also possible to apply a visco-elastic substance such as biscolloid to
totally damp and absorb the visco-elastic substance such as biscolloid, which causes anti-t t% in
the midrange and produces a characteristic deep valley. The amount of @ increases, the
efficiency of the speaker decreases, and the nature of the visco-elastic substance changes and
degrades like a temple, so it is effective only as a temporary measure. In addition, as shown in
Fig. 1, the edge (2) is thinly formed to suppress mosquito distortion and non-linear strain, but the
method for forming is complicated and it is not effective. The method described in JP-B 4114483, that is, mixing collagen and iit in a diaphragm is effective, but the compounding height of
collagen fibers in the cone part (1) and the edge part (2) Ic is the same As a result, a satisfactory
effect could not be obtained. Alternatively, as shown in FIG. 2, the free (free) edge may be used
by using edge (3) agate corn foam or collagen fiber alone or in combination with other fibers S.
Any of these exhibits excellent performance, and the edge using this collagen fiber is anticorrosion ti! It is a good mourning thing because it can be effectively beaten, but these edges (3)
are composed of a convoluted cone (1) and so have the disadvantage of being relatively laborious
to assemble. In view of such points, the mallet has a desired internal loss, and it is possible to
obtain sufficient peristaltic vibration without making the edge of the diaphragm a trace of the
cone portion, and apply the visco-elastic substance. It is intended to provide the vibrational root
of the speaker which can prevent the anti-resonance of the peripheral portion without requiring
much time for assembling-that is, in the case of Kimei, paper a # and human being A single fiber
or a mixture of fiber and collagen fiber is added to the cone part (1) by mixing 20 to 50% of the
superior part with ll150 to 100fi [9%] to unite the cone and the edge After being made into a
sheet, the heating bite type Manen adds and dries to compose the diaphragm of the speaker, @!
What is illustrated in S figure is a fixed board by xylophone wA, and collagen fibers of a partial
VC nose view of edge (4) are blended. As conventionally known, when the content of collagen
fibers is increased, the internal loss is increased, so that it acts as an edge (4) id effective internal
loss material. The band of collagen fiber saponified according to the frequency inertia of the
speaker was found to be 50 to 100irt4.
Curves (7) and (8) in FIG. 5 show the speaker and the conventional edge of the rtv diameter 201
according to the above-mentioned embodiment and the edge obtained respectively. As is
apparent from the figure which is a measured nine frequency response curve, in the conventional
product, a peak and a valley (9) are produced at a characteristic of about 500 inch in the middle
range, but according to this embodiment, The valley (9) is flattened, and the characteristics of the
low range are smooth and the low-lying region is also improved. In addition, the thickness of the
edge (4) of the diaphragm is the same as in the other # (1), but the edge (41 K: soft due to a
relatively large amount of collagen fiber made 4 The sex is good, so the lowest resonance
frequency is enough to reproduce a wide frequency range. Wood: According to @ L @ j4, to
compare the edge of the diaphragm with the cone, to apply the visco-elastic substance, or to the
edge? : A speaker can be made to play a flat sound good sound reproduction of frequency
without applying 'i & 1' to separate and form with a material with a large internal loss, and also
because a cone and an edge are formed as one piece Its production is extremely easy. In the
example described above, the cone and the edge are integrated, and a relatively large amount of
collagen fiber is contained in the portion of the edge. However, as shown in FIG. A conventional
cone (5) can be laminated to a diaphragm (6) containing the mixed edges to change the
substantial content of the edges and cones to prevent anti-resonance EndPage: 27
Brief description of the drawing #! FIG. 1 is a cross-sectional view of a conventional diaphragm in
which the edge is thinned. ・ The second figure is a cross-sectional view of the nine-sustaining
type diaphragm without separate edge and cone. FIG. 3 is a cross-sectional view of a swing / nplate according to Kiso Akira. Fig. t $ 4 is a frequency response curve of a speaker using a
diaphragm with a mallet hammer and a conventional speaker. FIG. 5 is a cross-sectional view of a
field moving plate showing another embodiment according to the present invention. (1) f'i cone,
(2) a conventional thin edge, (3) a conventional separate edge, (4) an edge by adding a tree, (5) a
conventional cone, (6) The vibrating plate according to the mallet al, (7) is the characteristic
surface of the loudspeaker according to the tree Ill bright-1 (8) is the characteristic curve of the
conventional loudspeaker. 1 蛸 6 X 匂 直-Inventors other than the above, patents frequently
issued (1) Inventor name Satsuhisa Hisoto Yutouri / Tsushiko? 4IIII 91 I Bushi Nakai Itayanai
Chemical Industries Co., Ltd. Inner name Muramatsu Tadashi (3) Patent applicant Toku
Dumishima Udo or Yu # Wing Shif Address Kita-ku, Nishigahara 4-chome 6-6 Name Toru Sato (4)
Patent applicant Yamana 7 pieces / Funin Yashiroda Noyuka Daimonchi 1 Address 2807,
Ichikawa Daimoncho, Nishi Yatsushiro-gun, Yamanashi Prefecture Name: Matsu Matsumatsu End
Page: 3
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