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JPS57111193

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DESCRIPTION JPS57111193
BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a longitudinal sectional view of the prior art,
FIG. 2 is a longitudinal sectional view of the present invention, and FIG. 3 is an enlarged view of
the main part of FIG. DESCRIPTION OF SYMBOLS 1 ... Diaphragm, 2 ... Neck rising part, 3 ... Voice
coil, 4 ... Bobbin, 5 ... Adhesive agent, 7 ... Corrugation.
DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a loudspeaker
diaphragm. Conventionally, as shown in FIG. 1, the speaker diaphragm (1) is engaged with the
bobbin (4) outside the voice coil # + 3 at the neck rising part (2) and fixed by adhesive (6). ing.
(6) is a damper for supporting the bobbin (4). Diaphragm (1) is made of paper, plastics,
aluminum, titanium dioxide, etc., and it is necessary to obtain desired adhesive strength,
especially in the case of aluminum and titanium dioxide, it is an epoxy with relatively high
adhesive strength. Adhesives based on rubber and rubber are not sufficient, and in the case of a
speaker with a large input, the amount of adhesive applied is increased, and the adhesive area is
increased to increase the adhesive strength. (1) 090 / / / / Tsuno), 5 ''. The present invention
aims at proposing a sliding plate t for a speaker which can obtain a large long attachment
strength with a simple improvement. The diaphragm for a speaker according to the present
invention (1) 1-As will be described based on the embodiment shown in Figs. 2 and 5, the
diaphragm fitted and bonded to the outer periphery of the bobbin (4) of the voice coil (3) The
neck rising portion (2) of (1) is provided with a corrugation (7) that bulges outward. This
corrugation (7) may be indented inwards or may be provided in plural. The adhesive +61 injected
between the neck rising portion (2) and the bobbin (4) solidifies along the uneven surface of the
corrugation +7), and there is no possibility that the diaphragm 111 bites off from the hovin (4).
The results of comparative experiments of the simulated attachment strength of the voice coil (3)
of the voice coil (3) of the speaker moving plate and the conventional speaker klEiI plate with
respect to the bobbin (4) K are shown below. The decal plate (1) was made of K mineral
aluminum, the one made of kraft pulp was used as the hovin (4), and the one made of epoxy yarn
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was used as the adhesive (5). According to the WR + 111 board for a speaker of the present
invention, a neck rising portion Ic co-tvpl-VII which is fitted and bonded to a bobbin of a voice
coil is provided. Therefore, the adhesion between the neck rising part and the bobbin is strong,
there is no fear of separation due to vibration, and the structure is also extremely simple.
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