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JPS60189399

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DESCRIPTION JPS60189399
[0001]
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to, for
example, a speaker unit, a passive radiator, and more particularly to a support member for the
diaphragm. [Prior Art] FIG. 1 is a cross-sectional view showing an example of a conventional
speaker, in which (11 is a megaphone-like frame, (2) is a megaphone-like diaphragm, and (3) is
this diaphragm (2). (4) is a voice coil attached to the inside of the diaphragm (2), (5) is a spider
supporting the voice coil (4) to the frame (1) 6) is a vibrating device for vibrating the voice coil
(4), and (7) is a dust cap. The vibrating device (6) has a gap (6a) corresponding to the voice coil
(4), and the voice coil (4) is floated by the spider (5) at a predetermined position in the gap (6a) It
is supported by the state. Inside the vibration device (6), a gap (6a) & a passing magnetic circuit
is formed. The spider (5) consists of a disc bent to have concentric waves as shown in FIG. FIG. 6
shows another example of the conventional speaker. In the figure, (1) to (4), (6) and (6a) are the
same as those of the above-mentioned conventional speaker. The spider is not used here, and the
voice coil (4) is supported by the edge (3). There are various types such as edge near roll,
corrugation, tangent gear gather, etc. The roll edge shown in FIG. 4 is most frequently used. The
conventional speaker is + t4 as described above, and vibrates the voice coil (4) in the gap (6a) by
the vibration device (6), whereby it is connected to the voice coil (1, 1) and f 'c vibration The
plate (2) is made to vibrate. However, the conventional support devices called spiders (5) and
gaps (3), due to their structure, are not perfectly linear with respect to vibration, and are prone to
rolling. In particular, the degree of non-linearity increases in the vicinity of the extension of the
wave. For this reason, the voice coil (4) is in contact with the vibration device (6) in the gap (6a),
so that the sound quality of the speaker is impaired. [Summary of the Invention] The present
invention has been made for the purpose of solving the above-mentioned drawbacks. By forming
the support member into a honeycomb structure, the voice coil is moved in a non-linear manner,
causing rolling. The present invention proposes a support member that can be made to be
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premature. DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 5 is a cross-sectional view
without showing an embodiment 1 of the present invention, and (1) to (7) are completely the
same as an example of the above-mentioned conventional speaker.
The spider (5) has a honeycomb structure and supports the voice coil (4) from four directions as
shown in FIG. The voice coil (4) may be supported from any direction as long as the spider (5) is
uniformly supported. FIG. 7 is a cross-sectional view showing another embodiment of the present
invention, and FIG. 8 is a plan view thereof. (1) to (4) and (6), (6a) are other examples of the
conventional speaker described above. It is exactly the same as the example. The edge (3) has a
honeycomb structure and supports the voice coil (4) from four directions as shown in FIG. Note
that the voice coil (4) may be supported from (p, 1 direction) as long as the support of the edge
(3) is uniformly achieved. FIG. 9 is an explanatory view for explaining the movement of the
honeycomb structure. In the figure, x, y and z indicate mutually orthogonal axes. In the figure,
when the part (8) is fixed, the point (9) tends to move in any direction of X, y, z. However, it is
difficult to twist when it is twisted around the y-axis. When this fly cam structure is used as a
support member, the voice coil (, +1 is hard to twist in the horizontal direction, and therefore, it
becomes difficult to roll). In addition, points (91 move well in both x and y directions). Therefore,
the voice coil (4) can be prevented from coming into contact with the vibration device (6) in the
gap (6a). By the way, although the case of the electrodynamic speaker has been described in the
above description, it is needless to say that it can be used for other speakers, a passive radiator
without a magnetic circuit, and the like. As described above, the voice coil is vibrated with good
linearity and rolling is not caused by the simple structure of forming the support device of the
diaphragm into the two cam structure as described above. The vibration is effective to improve
the sound quality of the cis-beaker.
[0002]
Brief description of the drawings
[0003]
FIG. 1 is a cross-sectional view showing an example of a conventional speaker, FIG. 2 (a) is a
spider of the speaker of FIG. 1 a plan view of FIG. Fig. 3, Fig. 3 (a) is a cross-sectional view
showing another example of a conventional speaker, Fig. 6 (b) is a plan view of the speaker of
Fig. 6 (a), Fig. 4 (a) is a sixth Fig. 4 is a plan view of the edge of the speaker of Fig. 4 (a), Fig. 4 (b
3 is a sectional view of the edge of Fig. B <1 (a), Fig. 5 is a sectional view showing one
embodiment of the present invention; 7 is a sectional view showing another embodiment of the
present invention, FIG. 8 is a plan view of the embodiment of FIG. 7, FIG. 9 is a two-cam structure
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It is an explanatory view for explaining movement of.
In the figure, (1) is a frame, (2) is a diaphragm, (3) is an edge, (4) is a poiscoinope (5) is a spider,
(6) is a vibrating device, (6a) is a gap, (force is a dust cap , (8) is a part, (9) is a point. In each
figure, the same 1-symbol shall show the same or considerable part. Agent Patent Attorney
Susumu Kimura Figure 1 Figure 9 Figure 2 Figure 3 Figure 4 Figure 6 @ Figure 7 Figure 8 to
Figure 8-
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