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JPS577288

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DESCRIPTION JPS577288
BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a half sectional view of a conventional speaker,
and FIG. 2 a. b, c, d show examples of the shape of the conventional edge, FIG. 3 shows the locus
of each amplitude of the conventional edge, and FIG. 4 a shows the edge of the speaker according
to an embodiment of the present invention. A diagram showing the condition before attaching to
the frame, Fig. 4 is the same edge? FIG. 5 is a view showing the movement of the edge when the
cone vibrates according to the present invention, when it is attached to the beam. 1 и и и Ringshaped magnet, 2 и и и и и и и и и и и и и и Bottom plate, 3 и и и и и и ring-shaped plate, 4 и и и и и и и voice coil, 5
и и и и и и Coil bobbin, 6 ииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииии
DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a speaker edge.
The function of the edge is against the movement of the vibrating cone. It is to support the cone
with full linearity from small swing time to large swing time. An object of the present invention is
to further improve the linearity at the time of large amplitude of the conventional edge. 2.)
Perform conventional dino's illusion using Fig. 1 to Fig. 3. FIG. 1 is a half sectional view of a
speaker. The names of each part will be described with numbers in the figure. The voice coil 4
wound around the voice coil bobbin 5 is positioned in a ring-shaped magnetic disk 7 composed
of a ring-shaped plate 3 fixed on the upper and lower surfaces of the ring-shaped magnet 1 and a
bottom plate 2. The voice coil bobbin 6 is held by the frame 6 fixed to the ring-shaped plate 3 via
the damper 7. The other end of the cone 9 having the edge 8 fixed to +22 is fixed to the voice
coil bobbin 5 and the other end is fixed to the frame 6 at the other end. ???????????
????????????????? Here, although the roll edge is indicated at the edge 8 in
FIG. 1, as the edge, as shown in FIGS. 2a and 2b, the fixed edge integrated with the cone and the
same c and d are shown. There is a free edge that is machined with the cone as a solid edge and
secured to the cone. Since the cone type Hi-Hi speaker in recent years has the fifth-order
advantage, the free edge is increasing. That is, (1) the support system of the cone becomes soft
and fO- \ can be set low. ) + 2 V 74 ') 1 1 7 ya 6 yau 8 8 ? large and good linearity. ?????
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1
?? However, in the roll edge 12 as shown in FIG. 3, it can be seen that it moves in the radial
direction when looking at the locus at each amplitude of points A, B and C on the surface.
Moreover, at point B, the displacement of the diameter (h) is symmetrical between positive
displacement and negative displacement, but is asymmetric at points A and 0. This radial
variation (each edge of A, B, C must absorb the expansion or contraction of 2??r, A, B, C in the
same direction for the edge. Therefore, if the material is a non-stretchable material such as cloth,
longitudinal wrinkles are generated at the edge, the linearity is bad, distortion occurs, and the
like, which is practically disadvantageous. Further, even a material such as urethane having good
stretchability can not completely absorb the expansion and contraction in the same direction, and
the linearity is deteriorated. The present invention eliminates the above-mentioned conventional
drawbacks. The configuration of the present invention will be described with reference to FIG. 4
and FIG.
? No. Figure 8 ░, ?. KX 7 * 21 pieces are attached together, and 1 is shown in the figure, the
edge 21 is straight before being attached to the frame 64. FIG. 4 is a view of the case where it is
incorporated into the speaker, and the edge 21 is attached to the frame 6 to form a mountain
shape. In this case, the center of the edge 21 is at the top of the fold. In the illustrated example,
the case where the edge 21 is formed in a mountain shape is described, but the valley shape does
not essentially change the intention of the present invention. Here, FIG. 6 shows the movement of
the edge 21 when the cone 2o vibrates. Since the edge 21 of the present invention is not formed
in advance by forming the fold (the top of the mountain), the crease 2 is moved to the next radial
turn by the vibration of the cone 2o. Further, the points A, b and C on the edge 21 are displaced
only up and down, and no change in radial direction (e (?r)) occurs. Therefore, according to this
configuration, the linearity of the edge does not deteriorate, and distortion occurs. In addition,
cloth and non-woven fabric as the material of the edge. L urethane foam, rubber, vinyl, etc. are
used и и и ░ ░. As described above, according to the edge of the present invention, since the
change in the radial direction of each point on the surface is not generated, the linearity at the
time of large amplitude is particularly good, and the effect of reducing distortion is achieved. is
there.
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