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JPS5568895

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DESCRIPTION JPS5568895
BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram of a conventional domeshaped speaker, FIGS. 2 and 3 are a block diagram of a dome-shaped speaker according to the
present invention, and FIG. 4 is a plan view and a front view of one washer. 1 is a diaphragm, 2
and 3 13 are gaskets, 4 is a convex ring, 5 and 12 are plates, 6.14 is a frame, T is a space, 8, 9
and 10 are Lll damping materials, and 15 is a voice Coil, 16 is center, pole, 17 is magnet.
DETAILED DESCRIPTION OF THE INVENTION The present invention provides a passage between
the closed portion of the back of the dome type shooting plate and the outside of the room, and
controls the flow of the passage of passage! The present invention relates to a dome-shaped
speaker in which the frequency characteristic of the low frequency range is smoothed by
correction. 2) As shown in FIG. 1, the dome-shaped speaker has the outer periphery of the domeshaped diaphragm l and the inner periphery E-plane of the annular plate 12 having the convex
ring 4 formed on the upper surface of the outer periphery Pasted on the gasket 8 of the annular
flat plate pasted on the upper surface of the annular flat gasket, and crimped the open flat facing
side of the flat plate frame 14 attached in the convex ring 4 on the upper surface thereof. The
voice coil 15 attached to the inner periphery of the outer periphery of the dome portion of the
dome-shaped peristaltic plate 1 is disposed at the center of the magnetic gap formed by the front
station plate 12 and the center pole 16 of the magnetic circuit consisting of the plate 12 and the
center pole 16 magnet 17 A sealed space is formed at the back of the diaphragm l. @ Note: When
moving the fine movement plate l up and down by moving the voice current through the voice
coil 15 and moving the fine movement plate l in the vibration direction, the closed space at the
back of the fine movement plate 1 is creating resonance There was a drawback that when the
two-way speaker was shared with a low-frequency speaker, it caused a climax in the vicinity of
the Ako quotient range, causing discomfort to the listener. The present invention is three old
woods to eliminate the disadvantages of the above 2. If the embodiment shown in the drawing is
described, it is attached to the inner periphery of the outer periphery of the dome portion of the
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dome-shaped diaphragm l as shown in FIG. The voice coil 15 is disposed at the center of the
magnetic gap formed by the plate 5 and the center pole 16 of the magnetic circuit comprising
the annular plate 5 having the convex ring 4 formed on the outer peripheral upper surface, the
center pole 16 and the magnet 17. The outer periphery of the plate 1 is attached to the annular
flat gasket 3 attached to the upper surface of the inner periphery of the plate 5, the annular flat
gasket 2 is attached to the upper surface, and the flat plate attached by the convex ring 4 part
The annular space 7 is formed by the gasket 2.3 plate 5 and the convex ring 4 frame 6 by
restraining and holding at the inner edge of the frame 6, and a plurality of holes 8 are formed in
the upper surface frame 6 of the space 7. 7 and outside Between the space 7 and the back of the
diaphragm 1 by drilling a plurality of holes 9 in the plate 5 and adhering a damping material 11
such as non-woven fabric or felt on the upper surface of the hole 8 Since the present invention
has a structure as described above as a dome-shaped speaker, a voice current is supplied to the
voice coil 15 to drive 4 up and down, and shake! ! When the n plate l is moved in the copying
direction, the empty weight portion 7 at the back of the diaphragm l communicates with the
outside through the holes 8 and 9 and air reciprocates the damping member 11 to suppress the
vibration of the diaphragm The resonance sharpness is reduced near the lowest resonance
frequency, and the frequency characteristic of the low frequency range is smoothed. When
shared with a low frequency speaker as a two-way hiker, no upsurge occurs in the middle or high
range, and the listener The sound quality that gives pleasure is obtained.
A woodworker is required to form an annular gasket tat having a plurality of 暢 -shaped holes 1O
formed on the lower surface between the inner peripheral upper surface of the plate 12 and the
outer periphery of the diaphragm 1 The same effect can be obtained by including a dome-shaped
speaker in which the damping material 11 is embedded in the hole 10 and the space portion 7
and the rear portion of the diaphragm 1 are communicated with each other. According to the
proposal, as described above, the air passage is provided in one space between the dome-shaped
diaphragm l and the back space and the outside, and the damping member 11 is provided in part
to suppress the vibration of the diaphragm 1 ± 1 The sound quality is improved by a device 5
for smoothing the low frequency range frequency characteristics.
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