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Description 1, title of the invention
3. Detailed Description of the Invention The present invention relates to a speaker, which is
intended to surely prevent the bonding portion of the diaphragm and the edge from coming off
when a large entry is applied. Heretofore, as shown in FIG. 1, the diaphragm and the edge of the
speaker are merely bonded to the surface of the edge 2 of the end of the diaphragm 1. For this
reason, when the diaphragm 1 is driven in the direction of arrow 3 and displaced as in the edge 1
of the diaphragm 1 or as indicated by the broken line, a large peeling force acts on the bonded
portion, and the diaphragm 1 and the edge 2 are separated. In the case where it is configured by
laminating one or paper, there is a problem that the paper or the layer peels off. Also, in order to
solve such a problem, a bond 4 for reinforcement is applied between the diaphragm 1 and the
edge 2. However, if the bond 4 changes with time or fatigue occurs, or if the bond 4 When
human power exceeding strength is applied, the bond 4 is easily peeled off and there is a
problem of name. なお1. When the end of the diaphragm 1 is adhered to the back surface of
the edge l, the same problem occurs with respect to the vibration in the reverse direction to the
arrow 3. The present invention provides a speaker that solves such conventional problems. One
embodiment of the present invention will be described with reference to FIG. As apparent from
FIG. 2, in the present invention, the diaphragm is constructed by bonding the auxiliary
diaphragm 5 to the main diaphragm 6, and the end portion thereof is covered with the front and
back sides of the edge 7 and this edge 7 is held. It is pasted like this. In this manner, the edge 7 is
extended by largely displacing the diaphragms 5 and 6 or in the direction of the arrow 8, and the
diaphragm 6 (even if it is intended to work this force, the auxiliary diaphragm 5 prevents this.
The contact strength of the diaphragm 6 edge 7 can be significantly enhanced. Conversely,
separation of the diaphragm 6 and the edge 7 can be prevented by the auxiliary diaphragm 5
also when vibrating in the direction opposite to EndPage: arrow 8. The auxiliary diaphragm 6
may be attached to the back side of the diaphragm 6, or may be attached with an appropriate
size in consideration of the acid or the like of the entire diaphragm. As described below,
according to the present invention, the diaphragms are formed by bonding two diaphragms, and
the ends of the respective diaphragms are pasted on both the front and back sides of the edge so
as to hold the edge. The bonding strength between the plate and the edge can be reduced to
reliably prevent the diaphragm and the edge from peeling off. In particular, in the case of a
speaker in which the vibration system and the drive system are coupled via an edge that
constitutes a mechanical filter, the diameter of the drive system is smaller than the diameter of
the vibration 11 of the vibration system, and the displacement of the edge becomes large,
resulting in adhesion with the diaphragm. If the present invention is applied to such a speaker, it
is possible to extremely effectively prevent the separation between the diaphragm and the work
4. Brief Description of the Drawings FIG. 1 is a sectional view of a conventional example, and FIG.
2 is a sectional view of an embodiment of the present invention. 5 ·····························. Name of agent
Attorney Nakao Toshio and others 1 person 1 figure 1 Figure 251I EndPage: 2