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JPS482739

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DESCRIPTION JPS482739
BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a cross-sectional view of the main part of a
conventional dome-shaped speaker, FIG. 2 is a cut-away cross-sectional view of the main part of
the dome-type speaker, and FIG. FIG. 4 is a cross-sectional view of an essential part of the
electrodynamic speaker. FIG. 11
иииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииии
ииииииииииииииииииииииииииииииииииииииииииииииииииииииииииии Magnet 22 ииииии Voice coil bobbin. FIG. 1 98310 '/ 37/92 f546 FIG.
2' El '/ 0' I '8' 3-89 real opening 48-2739 (2) FIG.
[Detailed description of the invention]-The present invention is a turtle related to an
electrodynamic speaker. ? 1 Conventionally, the above-mentioned electrodynamic speaker-As an
example, there is a dome speaker. As shown in Fig. 1, the dome-mounted loudspeaker of Hshaped cross section has a T-shaped O-plate BIO East Iml (Rio JJI, voice coil (I), and next PoisIlpobin (2) is positioned, cylindrical Flat II-like O-play) (4) The above Buisuifilpovin 001 and the
above T-like play) Gl) The above-mentioned so as to interpose ma / $,) (и) in the plate portion (6)
T-shaped projections (2) (Le) B) projections (R) are connected as diaphragms (A) to the abovementioned bosses (1) KII as a vibratory system supporting part When supported by the vibration
system support part (hereinafter referred to as "di") of 8), the roll edge (8) is fixed to the fixing
ring (9) in 4 and it is good. However, the upper ffi and large dome lid speaker is very weak for
vibrations with large amplitude. This is also understood from FIG. 1. As shown in FIG. 1, because
the vibration system support II for the scissors is the work of the roll edge (8), the shape and the
material of the roll edge (8) The diaphragm (7) K connected nine dice coil (3) is inclined to the
busy ? llll when receiving vibration with large amplitude due to non-uniformity etc., p-rue as a
vibration system support component, j (8)-There was an interlayer of a weir etc. being destroyed
in contact with a pole etc. On the other hand, as shown in Fig. Kg 2111, which is cast for the
purpose of preventing vibration MO destruction as described above, the diaphragm (support of
mosquito's roll of 2 autumn roll edges (81 ', + Ill "), di-part ?-Lue, Di (A) '(1)' is supported on the
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diaphragm (1) 'as in two places, and the support section of the excitation system has a constant
resistance 5? However, voice coil (3) for large amplitude vibration can be reduced by using such
a dome clean speaker, but the voice coil can be reduced for a long time 0 over-input, though the
inclination is reduced. 3) l and Rolle, with di (81 ', +8)' and OIn, excessive input is applied to the
part, and since this is not a part, the attachment of KJI dynamic support O voice cari # (3) 'is the
root part At roll edge (81, (81 'diaphragm (7)- Or, the voice coil (3) t is a problem, such as peeled
off from the voice twill bobbin Kosuke 'Aue. In the present invention, as described above, it is
necessary to support the modification of the electrodynamic speaker as described above, and <Kll
support the moving plate with a cylindrical work, and be broken against the large amplitude
vibration as described above. It is intended to provide 4's without strong support.
Hereinafter, an embodiment of the present invention will be described together with the
accompanying drawings. Fig. 3 shows an example of the structure of a vibration / dynamic
system supporting part (hereinafter simply referred to as an "edge") used in the O electric motor
speaker according to the present invention, and as shown in the table of Fig. No, it is made of a
highly elastic non-permeable material such as a foam material having a large number of
independent cells or a continuous / open cell with a non-porous surface on one side. Next, an
electrodynamic seal speaker formed by using the above-described work and tool will be
described. FIG. 4 shows an embodiment of an electrodynamic speaker according to the present
invention, in which a voice coil (2) is wound on an inner side of a voice coil (2), and a voice coil
(2) is stretched. At the same time, the voice-il @ is connected to the diaphragm 0 and fixed by a
fixing ring-. Incidentally, the fixing portion a4 is provided with a notch portion (2) for locking the
edge (b) in fixing the above-mentioned work, di-?p. On the other hand, if the space (2) is formed
so that the above-mentioned voice coil @ can be inserted in the cylindrical flat plate (mostly) in
the projecting part (stock) of the plate (mostly) whose cross section is T-shaped, 4? An iron base
is provided so as to interpose a magnet between the plate portion (i) of the letter plate (d) and the
plate portion (i). With the domed ? speaker configured as described above, the ? can be a ringshaped O vibrating sluice supporting part 5 and the tomo support the voice coil bobbin on the
inner surface of the ? so that centering is easy In addition, since the slope is generated due to
the vibration with a large amplitude and the K pitch, the improvement in the reliability as the
speaker is remarkable. Since the diaphragm supports the voice coil connected to the diaphragm
on the inner surface of the ring-shaped machining surface, the inclination zero ratio to the
vibration is significantly reduced as compared with the one-point or two-point support. .
Therefore, since the length of the air gap can be reduced, it is extremely advantageous in
magnetic circuit design, and it is also possible to form a smaller one than the conventional one.
Furthermore, the bonding strength between the voice coil and the machine and the die is greatly
increased since the die and the die are bonded to each other. Therefore, since large amplitude
vibration can be tolerated, it is possible to expand the allowable input and the reproduction
frequency range of the bass. Furthermore, its practical value is greater, as it can be assembled ak
compared to the case of two clamps.
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