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JPS54166322

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DESCRIPTION JPS54166322
BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of an electrodynamic
speaker according to an embodiment of the present invention, FIG. 2 is a sectional view of the
same, and FIGS. 3 and 4 are sectional views of other embodiments. It is. 1 · · · · · · · · · · · · · · · · · · · · ·
= 3 · · · · · magnet. 4 · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · ·
· · diaphragm · 9 · · · ......... Damper, 10 ... ... Bobbin, 11 ... ... Voice coil, 12 .... ··· Magnetic fluid, 13 · ·
· · · · · · · · · · · · · · · · · ring plate, 15 · · · · · · · · · · · · · · · ·
DETAILED DESCRIPTION OF THE INVENTION In the present invention (one-acting type claw
force temporary (.. The purpose is to remove the In the conventional cone type speaker and
dome type speaker, the outside of the diaphragm and the cylindrical portion are supported by
the frame or the like through the edge made of the soft polymer material. However, when the
diaphragm is supported via the edge, the distortion of the elastic force of the edge material
increases the t '1 re, the low range distortion at the time of large amplitude increases, and the
mid range 1 · 2 In the case of ++++ I + rry2, there is a defect that the resonance occurs and the
sound pressure frequency characteristic has a peak. The present invention eliminates the abovementioned conventional drawbacks, and in the following, one embodiment of the present
invention will be described with reference to FIGS. In FIG. 1 and the second plan view, -1 is a
wedge-shaped yoke, and a hole 2 is formed on the bottom surface of the yaw 1. 3C is a shield
which has four holes in the surface of hyo 1 in hgZ 1 and shield 1 is attached h. 5 is a center pole
having a hole 6. In this setter ball 5 (Pumagi, Nodo 3) It is fixed on the earth surface 1. An
annular magnetic cap or slot hole is formed between the outer peripheral surface of the dowel
pole 5 and the inner peripheral surface of the upper sound 1 j of the yaw 1. Reference numeral 7
is a sound absorbing material accommodated in the hole 6, 4.2. A diaphragm plate 8 is supported
by a tar / par 9 and is a diaphragm plate. It is formed of a honeycomb core material or the like.
Reference numeral 10 denotes a cylindrical bobbin made of aluminum, and the upper portion of
the bobbin 1o is fixed to the outer peripheral portion of the vibration? ' 11 is a 3 voice coil
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wound around the outer periphery of nahi / 10. 12 is a magnetic fluid f'L filled in an annular
magnetic gear, and this Φ-like fluid 12 is a noncomblicable silicone oil, a comitic form @ in
which a ferrite powder and a cobalt powder are dispersed in an ester 3, the above The lower
portion of the bobbin 10 and the Heus coil 11 are inserted in the magnetic fluid 12 described
above. In addition, it is made of a material that has an orderly presence that generates the elastic
restoring force of -91 straight-operation lever 8, and it is made of a material with a long-lasting
edge (compared to a long-length support and long-length non-n礫 distortion is less than one
edge. In addition, the sound absorbing material 7 works as a back AI and vibration resistance of
the vibrator 8. The present invention is a soil 1-like drawing, and a magnetic field "k" gear knob 1
is a main body of a body 12 and a magnetic fluid 12 (this voice coil has 11 core members. The
following effects can be obtained.
(A + magnetic rough body: it is possible to damp the pregnancy Confucianism from this, it is
possible to attenuate the co-shooting of one perturbed root. (B) because the edge is uneasy
Mouth, and the edge co-it can be removed. The heat generated in the fcl voice coil can be
dissipated to the yoke through the magnetic fluid, and burnout of one voice coil can be
prevented. (All contact with the dl voice coil can be prevented. In order to divide the outer
peripheral part of the tQl diaphragm by m, it is difficult to t + Fltel's reason: Two or more adult
power is possible, the maximum output sound, it is possible to mature instep. FIG. 3 shows a
second embodiment of the present invention. An unfair example uses an extra F4 sane circuit. In
addition, the bobbin 10 is fixed in the vicinity of the lower surface D of the vibration rod 8 in the
vicinity of the outer periphery of the soil plate 13 and the upper surface of the earth plate 13]
11] lice / gub plate 14 It is intended to prevent powder from reaching I1 '. FIG. 4 shows an
example of a real sister using a dome-shaped loss 15 in which the bobbin 11 is fixed to the outer
periphery of the dome-shaped diaphragm 15 and the upper part of the drone 9 is in contact with
the bobi / 11. It is \ 4.1 ((One side of the goat-ー 3 Da '5 m-171 is a perspective view of the
floating speaker of the present invention at 1 @ example, Figure 2 is the same cross-sectional
view, 3 and 4 are cross sections of cells and other embodiments. 1 · · · · · · · · · · · · · · · · · · · · 'fL, 5 ...
center ball, 6---hole, 7 · · · · · · · · · · · · · · · · diaphragm , 9--Danopa-11 °--Bobinow 11-voice coil, 12magnetic fluid, 13------------14--. The name of the agent Attorney in the middle of the 7th
anniversary of the 7 other 凱 \ ←. Fig. 1 □ 2 Fig. 2 q · '/ 01 / N / 6.55 / ・ ・ ・ ・, 7237-f 4 f 7
Name of agent / # logic ± thg # * I third section 9 Be 70 i 4.7 ·' No. I □ ・ j 527 r 2 Fig. 4 · 7
′F′
t。 '/ Noah S-δ \ 123' 427 name of the agent 'tj'j' '' lmm + chg diligence 6 other
than the above inventor and agent (1) inventor address Osaka Prefecture Kadoma city Ogata
Kadoma 1006 address 1-Buddha Kenken Co., Ltd. 丙 Aoi Takahisa Mr. 8 Aoi Takahisa Address
Shisho Ato / Nobuhisa Name Traces Nobuhisa Nobuhisa (2) Agent Address Osaka Prefecture
Kadoma City Ogata Kamon Shin 100617% Matsushita Electric Industrial Co., Ltd. Inside t: 't- H
'Name (6152) Patent Attorney Shigetaka Ogino j =' v 'l' j ') 1) + 1 / Sword, It;
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