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JPS568394

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DESCRIPTION JPS568394
BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a bobbin for a voice coil
for a flat diaphragm, and FIG. 2 is an enlarged sectional view taken along line 1-- in FIG. 1 · · · Flat
diaphragm, 2 · · · · · Voice coil bobbin, 21 · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · ·
· · · · Flange, 3 ..... Voice coil.
DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a voice coil
bobbin for a flat diaphragm, and further, for fixing the diaphragm to the diaphragm. Voice coil
bobbins for flat diaphragms with improved voice coil attachment KIIIt4 ° flat diaphragms with
relatively flat sound pressure characteristics over the entire range of the same wave number, so
that faithful reproduction can be enjoyed, etc. 6 6ii 1 繊 、 な っ て, K K K ス ピ ー カ ス ピ ー カ
K ス ピ ー カ K. In the case of the speaker system 7 using a flat diaphragm and driving type K
during medium driving, a driver unit is required which can make the entire area of the flat
diaphragm move in a piston motion. The shape of the voice coil bobbin, which is a member that
is directly coupled to the flat diaphragm, is important. Especially in the case of a square flat
diaphragm, the voice coil bobbin also has nine sides along each side of the diaphragm. It is
desirable to use a square-shaped voice coil bobbin and a kernel. Furthermore, if the adhesion of
the voice coil bobbin to the flat diaphragm is poor, the driving force is transmitted to the
diaphragm and the friction between the voice coil bobbin and the diaphragm must be ensured.
Therefore, this device is designed to improve the adhesion between the voice coil bobbin and the
flat diaphragm. In an attempt to improve the adhesion of the voice coil to the voice coil bobbin, at
its one end 11 of the voice coil bobbin, a flat diaphragm is formed with a pair of 7 flanges with a
jaw and a predetermined shape at the l edge The voice coil flange for fixing the voice coil defined
in 7 is designed to bond and fix 7 runes with 1wR via a flat diaphragm K11 l cable and to fix the
die coil to die coil 7 '). The thing is an object image. Details of the invention will be described with
reference to the attached drawings. First of all, Fig. 1 (b) shows a flat diaphragm made by
bonding a skin material to a honeycomb core. A voice coil bobbin 2 having a side parallel to each
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side is fixed to a central portion of the plane diaphragm. This voice coil bobbin co is assembled
by assembling the bobbin frame co l independently for each feeding can and connected at the
corner portion, and bending one turtle's letter at a right angle along the longitudinal direction
ridge, with the flange 1 n, The other end edge is also formed with a voice coil flange which is
folded at right angles along the longitudinal direction. The bending directions of the respective
flanges are such that when the voice fill bobbin 2 is assembled, it can be directed to the outside i
at any time.
The voice coil Jhs of this voice coil bobbin 7 is fixed in advance by a voice coil Jhs adhesive
formed by winding 11 in advance. The voice coil upper bobbin for the flat diaphragm of this
invention is a flat diaphragm / one flange for 1! > WK adhesive coating is applied to identify the
adhesive, so that 1 both are integrated by image attachment, and the voice coil 7 lunge DK is also
3 voice coil I integrated by face attack. In one or more explanations, e = indicates that the voice
coil 7 rungs are formed independently by 9 bobbins% st on each side, z is continuous, or I # is
one at one position. Also, the overhang direction of the flange is not only that of the example
shown, but also 'l! Inしたものでもよい。 As is apparent from the above description, according
to the voice coil for a flat diaphragm of this invention, a brazed flange is provided so that the flat
diaphragm KWJm can be attached. Furthermore, since the flanges to which the voice coil bobbin
bites are formed, it is easy to perform the throat attachment of the voice coil, and reinforcement
is also performed against bending deformation of each of the flange voice coil bobbins, and 9M
has an effect on deformation.
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