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JPS59152798

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DESCRIPTION JPS59152798
[0001]
FIELD OF THE INVENTION The present invention relates to a loudspeaker using a linear damper.
The configuration of the prior art and its problems In the prior art, linear dampers composed of a
plurality of rectangular cylinders each having a rhombus cross section have been widely used
because of their good center holding power and vibration [1] linearity. However, even with this
configuration, since the voice coil bobbin is held at one place, there is a problem with the center
holding power and the amplitude linearity of the voice coil bobbin at a large amplitude, and the
center coil and the vibration linearity are further improved. A speaker was desired. SUMMARY
OF THE INVENTION It is an object of the present invention to provide a speaker in which the
effect of a linear damper excellent in center holding power and amplitude linearity is further
enhanced. SUMMARY OF THE INVENTION In order to achieve the above object, the present
invention is a configuration in which two linear dampers are attached to a single voice coil
bobbin in an angularly offset state. Two linear dampers are attached to one voice coil bobbin, and
since they are attached at different angles, the center holding force and the amplitude linearity
become very good. DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 and FIG. 2 are a
plan view and a front view of an essential part of a speaker according to an embodiment of the
present invention. In the figure, 1 is a voice coil bobbin, and 2.3 is a linear damper having square
cylinders 4 and 6 each having a rhombic cross section, and the linear dampers 2 and 3 are
attached to the voice coil bobbin 1 so as to be double. The dimensioned linear dampers 2 and 3
are fixed in a state of being offset from each other by 46 ░. In the present embodiment, since
the square cylinders 4 and 5 are four in number, the linear dampers 2 and 3 may be shifted by
460 as in the above. By shifting and attaching to one voice coil bobbin, it is possible to operate
with low distortion even with large amplitude which was not possible in the past, because the
linearity and central holding power are much better than in the past. it can. Also, the magnetic
gap can be made narrower than in the prior art.
12-05-2019
1
[0002]
Brief description of the drawings
[0003]
FIG. 1 is a plan view of an essential part of one force according to an embodiment of the present
invention, and FIG. 2 is a front view of the essential part.
1 иии Voice coil bobbin, 2, 3 и и и и и и Linear damper, 4, 5 и и и Square tube.
12-05-2019
2
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