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JPS5796593

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complete, reliable or fit for specific purposes. Critical decisions, such as commercially relevant or
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DESCRIPTION JPS5796593
BRIEF DESCRIPTION OF THE DRAWINGS FIGS. 1 and 2 are cross-sectional views of an
embodiment of the present invention. 1 is a frame, 2 is an edge, 3 is a magnet, 4 is a diaphragm,
5 is a dust cap, 6 is a voice coil, 7 is a terminal, 8 is a protrusion, 9 is a cut, 10 is a damping
member, 11 is a damper 12 is a protrusion It is a support plate.
DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a loudspeaker.
The amplitude of the diaphragm may be rapidly increased by colliding at a certain portion of the
frequency of the speaker. As a result, peaks or valleys occur on the sound pressure frequency
characteristics. Heretofore, in order to improve such disturbance of the characteristics, it has
been attempted to suppress this photographing movement by adding a mass material to the large
amplitude portion on the diaphragm. However, this will increase the weight j, and if the damping
material is added between the stationary part or the reverse phase imaging part and the vibrating
part to be noted, the effect is enhanced or applied to the vibrating part. Can not expect a great
braking effect. The purpose of this invention is to increase the braking effect described above,
sound pressure frequency characteristics disturbance lr 'L 罠 affect the part on the diaphragm- A
hole or a cut is formed by inserting a projection having a support on the outside of the
diaphragm into the hole or cut so as to load the viscoelastic substance between the diaphragm
and the projection. Hereinafter, the present invention will be described in detail by way of
examples. An embodiment of the present invention is shown in FIG. 1, and a voice coil 6 is
supported by a tumbler 11 so that it can move 10,000 times in a magnet 3 fixed to a frame 1
10,000 times. The 7th coil of the voice coil 6 is viewed as a diaphragm 7 with its outer periphery
connected to the frame 1 by an edge 2. The cut 9 is provided in the portion to be braked in the
friction plate 4 and the projection 8 projecting from the frame 1 is inserted in the cut 9 and the
cut 9 is blocked by the damping material 10 of viscoelastic material. There is. In this case, it is
also possible to make the projecting direction of the projection 8 coincide with the direction in
which the voice coil 6 assists. Another embodiment is shown in FIG. This is an example of a
12-05-2019
1
speaker having a flat-faced vibrating root 46 and a projection 8 is formed from the frame 1
through the support plate 12 (21, to increase the damping effect of the intended portion without
increasing the mass in either case) It can. According to the present invention, the effect of
damping the internal damage due to the deformation of the visco-elastic substance loaded
between the protrusion fixed to the vibration plate of the carrier plate and the diaphragm fixed
as described above is significant.
12-05-2019
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