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JPS57163896

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DESCRIPTION JPS57163896
BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 to FIG. 3 are cross-sectional views of respective
conventional speaker vibration systems, and FIGS. 4 to 7 are respective cross-sectional views
showing respective speaker vibration systems of the present invention, FIG. The figure compares
the characteristics of the prior art with the present invention. la, lb, lc, 1d = diaphragm, 2a, 2b.
2c、2d−ダイアフラノ9.3a、3b、3c、3d・・・ボビン、5・・・ボイスコイル、
7a、7b、7c。 7d--Reinforcing bobbin, 8a, 8b, 8c, 8d = -supporting member. In the
drawings, the same reference numerals denote the same or corresponding parts.
DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a speaker having
an integral structure of a diaphragm and a screw bin, and more particularly to an improvement
of a vibration system of the speaker. 1 // a-//? 62 In the prior art, this type of loudspeaker has
been shown in FIGS. In FIG. 1, reference symbol l & denotes a diaphragm having a diaphragm 2a,
a bin 3a and a support member (edge) 4 & in an integral structure, and 5 is a chair coil wound
around the l bin 3b. In FIG. 2, lb is a diaphragm with a diaphragm 2b and a bin 3bJJi integral
structure, 4b is a support member fixed with a diaphragm 2bK adhesive 6, and 5 is a chair coil
wound around the bin 3b. In FIG. 3, 1c is a diaphragm in which the diaphragm 2c and the mevin
3c are fixed by separate members, 4c is a support member fixed to the upper portion of the
bobbin 3c by the adhesive 6, and 5 is a bin 3c. It is coiled, but it is a chair coil. The same applies
to the operation principle of the first to third sections, and the support members 4m, 4b and 4e
are fixed to the magnetic circuit or frame and the coil 5 is positioned in the gap of the magnetic
circuit. The diaphragm 1m + 1b of FIGS. 1 and 2 is formed in a dome shape, and the rise of the
dome-shaped diaphragm is wound with a 3m-bin bottle and a 3bK mace startle 1 coil 63 coil 5
There is. The diaphragm 2c in FIG. 3 also has a dome shape, but the chair coil 5 is wound in an lbin 3c. The support members "+ 4b, 4c" are designed to act as mere stiffness, for example, they
are shaped like corrugations, which were structurally perforated. Sound emission is designed to
be performed by the central dome shaped diaphragm. Since the conventional speaker is
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configured as described above, there is a disadvantage that the bobbin is thin and the strength is
weak. Therefore, the driving force generated by the chair coil causes distortion in the pg bin and
is easily deformed, and the lossless driving force transmission which is the original purpose is
not performed, and the voice coil is caused due to the Mevin deformation. And abnormal noise,
and the transient response is degraded due to internal loss. The present invention is a rounding
which eliminates the above-mentioned disadvantages of the conventional ones, and prevents the
deformation of the bobbin by the existing 3) 64 by attaching a reinforcing pin integral with the
support member to the bottle. It is an object of the present invention to provide a speaker which
transmits a lossless driving force and is free from the contact of a chair coil and the generation of
abnormal sound. Hereinafter, an embodiment of the present invention will be described with
reference to FIG.
Various embodiments are shown in FIG. 4 to tiA 7. In FIG. 4, 1 m is a diaphragm of the
diaphragm 2 & integral with the bobbin 3 a, and 7 a is a bin of reinforcement with the
supporting member 8 a. It is mounted on the outside of the existing bobbin 3a. In this
reinforcement bobbin 7a? The chair coil 5 is wound. In FIG. 5, lb is a diaphragm having an
integral structure of the diaphragm 2b and the mevin 3b, and 7b is a reinforcing bobbin having
an integral structure with the support member 8b, and the existing one is mounted inside the bin
3b. The voice coil 5 is wound around the existing bobbin 3b. In FIG. 6, IC is a diaphragm in which
the diaphragm 2C and a part of the bin 3C are integrally formed, 7C is a reinforcement of an
integral structure with the support member 8C, and the reinforcing bobbin 7C is outside the
existing partial bobbin 3C. It is attached to. Then, I added, Kei 965 pin 7cK chair coil 5 is
wound. In FIG. 7, ld is a diaphragm having an integral structure of a diaphragm 2d and an I-bin
3d, 7d is a reinforcement of an integral structure with a support member 8d, and a reinforcing
zabin 7d is long over the entire inner surface of the bin 3d. It is stretched and mounted. The
existing coil coil 5 is wound around the outside of the bin 3d. In FIGS. 4, 5 and 7, the supporting
member is disposed below the coil 5, but in FIG. 6, the supporting member is disposed above the
voice coil. The speaker according to the present invention configured as described above has
high rigidity due to the reinforcement of the integral structure with the support member
mounted on the existing bobbin and the thickness of the entire bobbin being increased. Etc. can
be prevented. That is, the contact and abnormal noise of the voice coil due to the deformation of
the bobbin are reduced, and the internal loss is small and the deterioration of the transient
response is kept low to enable the transmission of the lossless driving force which is the purpose
of the bin. For example, the level-frequency characteristics of the speaker according to the
present invention and the conventional speaker are shown in FIG. 8 by their respective 6G solid
lines and broken lines, but according to the present invention, the extreme peak dip due to l-bin
division vulgaris suppressed Also, it can be seen that the frequency at which the peak dip occurs
can be moved to a high frequency. Although the dome-shaped speaker has been described in the
embodiment of the present invention, the same function as described above can be obtained even
in the case of other--brid type or cone type speaker. As described above, according to this
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invention, the reinforcement of the support member and the integral structure is attached to the
existing bobbin portion, and the thickness of the l-bin is increased by preventing the deformation
of the bobbin. It is possible to obtain a high-quality, high-performance speaker without
deterioration of transient response, and the effect of being able to obtain no driving force and
prevent the occurrence of contact of a voice coil and abnormal noise.
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