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BRIEF DESCRIPTION OF THE DRAWINGS FIGS. 1a-1c illustrate various forms of cone edges and
FIG. 2 is a cross-sectional view of a speaker cone edge according to the present invention. [M, 4 ...
Guide part. Fig. 1 (0) (b) (C) / / / zone / a -71-
DETAILED DESCRIPTION OF THE INVENTION The present invention relates to the improvement
of the edge portion of the inventive cone for a wire speaker. Speaker cone edge form sec # i,
formed simultaneously with the formation of cone 1st aWK show J'l & Korgage Caon elanth,
urethane rubber, deer leather etc. Figure 2b made of turtle corn and aitio material There is a free
edge as shown in the figure, and a double edge as shown in <tcaa <show. This invention relates
to the improvement of the free edge which started with the aim of miniaturizing the cabinet,
among the above-mentioned respective edge forms. The effect of the 7 lead edge a The purpose
of the speaker is to lower the bass resonance chest wave number of the speaker, and by the form,
the stiffness of the speaker is small and the linearity is good by the form, among the 1,7 lead
edge material In particular, with regard to edges made of synthetic resin which is rich in rubber
and company, especially in 1), while recognizing the goodness of its low-pass characteristics, the
effective mass for the weight of the company's own edge by the conventional molding method In
addition, it causes a decrease in the output sound pressure, and the company has one drawback
in its easy operation with three power amplifiers with small power amplification. The purpose of
this invention is to reduce the effective mass by the weight of the edge itself and to improve the
linearity. The conditions for reproducing the bass are to lower the lowest resonance frequency of
the speaker as much as possible and to lower the resonance frequency J of the bass and Q of the
vibration system at K k. なおこれらJ、とQ。 The relationship between the caliber of the
speakers in the related jurisdiction use and the contents of the cabinet that can be used, but in
this-the relationship between the two conditions J, Q and Q, only iK-wJ1 male. ! ""-) II-tvQ, d +,
kLU ** '1 ilkxh 4 cJt "tribute 2TC +. m0!
= (ByUa) ′ r, 1. The relationship of to (the
speaker's J, J, = β square 1 is in the relation. KFJ stiffness lowers the low four resonance
frequency 共振 J, for bass reproduction as evident from this osgs. Need to lower. Next, the
effective mass m, the relationship between Qo and 4 °, and the stiffness of the paper 8. It is
possible to lower the vibration system IDQ by lowering the effective mass town, and the bass
reproduction can be performed well. This invention is also based on fish recognition as described
above. It is O. When the wall thickness is gradually increased toward the outer periphery, it is 4K,
and the guide portion is integrally formed with the corn attachment portion and is rich in rubber
or flexibility. It is in the speaker cone for plastic made of plastic.
The invention will be described with reference to the following diversion. FIG. 2 is a crosssectional view of a roll type speaker cone edge according to the present invention, wherein K17
is a five-corner cone, 2 is an edge of rubber or flexible synthetic resin, and 3 is a frame. . Since
the conventional rubber edge is uniform in thickness at the glued portion of the cone, at the
attachment portion to the 7th frame and at the middle portion thereof, the weight of the edge
itself corresponds to that of the cone -h *, The effective mass is large due to the tome, causing a
drop in output sound pressure. As is apparent from FIG. 2 of this invention, even when the
thickness of the outer peripheral part of the edge 2 is made gradually thicker than the inner
peripheral part, the outer peripheral edge of the cone 1 is adhered to the cone attaching part in
the inner peripheral part of 1 edge 2 An integral KJN guide portion 4 for facilitating operation is
used, and the inner peripheral portion of the edge 2 is thin and the outer peripheral portion is
thickened, and most of the weight of the edge is an edge of the frame 3 In addition, the effective
mass ore can be significantly reduced compared to the conventional gouge, and the improvement
of the linearity can be achieved.