JPS5473619

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DESCRIPTION JPS5473619
Specification 11 name of the invention speaker diaphragm (11 -t at the edge of the diaphragm
shaped into a fixed shape. Loudspeaker diaphragm with a closed curling with a cross-sectional
shape of at least 374 rotations.
2, the scope of claims
3. Detailed Description of the Invention The present invention relates to a diaphragm of a
speaker capable of achieving an effective K resonance suppression with a simple K structure.
When the rigidity as a structure is weak, the diaphragm of the speaker causes unnecessary
vibration at a frequency unique to the diaphragm. An example of the vibration is shown in FIGS.
1 and 2. The vibration shown in FIG. 1 and FIG. 2 is referred to as a bell and bell resonance, and +
is when a part of the diaphragm comes out. Show the case. Sound pressure circumference
because it is ten-the same number. There is no effect on the wave number characteristics.
However, the diaphragm is damaged when it is operated in a state where the bell ring resonance
is strongly generated. I was sent to nine, or to a haunt of the diaphragm. Voice coil deviates from
normal piston vibration. Even in a narrow magnetic circuit, it generates abnormal noise. たりする
。 Conventional dome-shaped spy for 1 ° bell bell resonance suppression. In the case of force,
as shown in Fig. 3 and Fig. 4, vibration. Take a vip ring 2 or ring 3 on the outer edge of the plate
l. The way to reinforce the In this conventional example, since a reinforcing material is newly
added in addition to the diaphragm 1, there is a drawback that the mass is increased and the
efficiency is lowered. In the case of the conventional cone type speaker, as shown in FIG. 5, a
plurality of corrugations 6 are inserted concentrically to the diaphragm pressure to suppress the
bell resonance. In this conventional example, there is a drawback that the nodal circle is easily
formed, the high band resonance EndPage: 1 is lowered, and the usable band is narrowed. あった
。 Further, the diaphragm of the conventional cone-shaped speaker shown in FIG. 6 suppresses
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the bell resonance by covering the cap 7 with a large diameter. This prior art has disadvantages
in that the number of parts is increased, and the mass of the whole vibration system is increased,
which leads to a decrease in efficiency. -Also, the conventional cone-type speaker shown in FIG.
The diaphragm has a thick foam plastic 8 at high sound velocity. In thin materials such as
aluminum in the sun, in ,. Use the strength of stiffness as a composite material. The bell bell
resonance was suppressed. This conventional example is a structure. It is difficult to reduce the
weight of the construction and the efficiency can not be improved. There was a drawback. An
object of the present invention is to provide a diaphragm of a speaker in which the abovementioned disadvantages of the prior art are eliminated by 1 °, the number of parts is not
reduced, the weight is increased, the rigidity is increased, and bell bell resonance is suppressed.
According to the present invention, the outer edge portion or the inner edge portion of the
diaphragm is curled with a spatula or the like to form a pipe-like green, so that the structure is
high in rigidity and lightweight to suppress bell resonance. The vibration of the speaker
according to the invention in the following drawings and book. Each embodiment of the moving
plate will be described.
FIG. 8 shows a cross-sectional view of the first embodiment of the speaker diaphragm of the
present invention. The dome portion of the dome-shaped vane moving plate 1 is The outer edge
is almost circular with a drawing etc. Curling to outside KN rotation more than KN and forming
curl edge 9 °. Inside the curled edge 9 Heus coil. Insert the bobbin 4 wound 5 and fix it to make
a vibration system. It is FIG. 9 is a second example of the speaker diaphragm of the present
invention. The cross section figure of the flow side is shown. Do of dome-shaped diaphragm 1.
The mold part is formed by pressing etc., and the outer edge is drawn with a spatula. Carry
approximately 10 turns or more inwards approximately inwards, etc. 1-. Form the curled edge 9.
The bobbin 4 in which the voice coil 5 is wound is inserted on the outside of the curled edge 9,
and the curled edge 9 is supported by the stopper 10 made of the upper end of the bobbin 4 to
fix the bobbin 4 and the curled edge 9 to constitute a vibration system. . FIG. 1θ is a third
example of the speaker diaphragm of the present invention. The cross section figure of the flow
side is shown. The cone / portion of the cone-shaped diaphragm 1 is molded by a press or the
like, and the inner / edge portion in contact with the bobbin 4 is blade-ringed for about 374
revolutions or more in # 1 round with a spatula throttling to form the curled edge 9 The inside of
the curled edge 9 is a bobbin 4 on which a voice coil 5 is wound. And insert the upper end of the
hobin 4 and the curling edge 9 together. And constitute a vibration system. FIG. 11 shows the
fourth example of the speaker diaphragm of the present invention. The cross section figure of the
flow side is shown. The cone part of the cone type diaphragm l is formed by a press or the like,
and the outer edge part is a spatula squeezer. Carries approximately 3/4 rotations or more and
curls into a circle. The rim 9 is formed. The central hole stands as before. With the upper end of
the bobbin 4 on which the raised voice coil 5 is wound. It adheres and constitutes a vibration
system. FIG. 12 shows a cross-sectional view of a fifth embodiment of the speaker diaphragm
according to the present invention. The cone portion of the cone type diaphragm 1 is formed by
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a press or the like, and the outer edge portion and the inner edge portion are curled into a
substantially circular 3/4 rotation or more with a spatula or the like to form two curled edges 9.
The bobbin 4 around which the voice coil 5 is wound is inserted into and fixed to the inner edge
portion to couple the vibration system. FIG. 13 is the sixth example of the speaker vibration
system of the present invention. The cross section figure of the flow side is shown. The
diaphragm 1 is the same as the diaphragm of the embodiment of the present invention shown in
FIGS. 8 and 9 and has a neck rubber 11 between the curled edge 9 and the bobbin 4. Insert a
mechanical filter with high attenuation. Configure the vibration system of the dome-shaped
speaker with. いる。 FIG. 14 is the seventh of the diaphragm of the speaker of the present
invention. The sectional view of an example is shown. The diaphragm 1 is shown in FIG.
Same as the moving plate of the fifth embodiment, with a force of 1u11. -Neck rubber 11tinserted between the sleeve edge 9 and the bobbin 4. And a mechanical filter with high
attenuation. It constitutes a vibration system of a cone type speaker. The speaker diaphragms
shown in the embodiments of 1.1 and above are each made of metal and provided with a curling
edge, whereby the rigidity of the structure is enhanced, and the occurrence of bell resonance is
suppressed. EndPage: 2 A curled edge 9 is formed as a part of the diaphragm 1. Therefore, the
number of parts does not increase, and the structure is simplified. できる。 The cost of
manufacturing the diaphragm 1 increases. On the contrary, the assembly cost is low, and it is
advantageous in terms of cost when mass produced and produced. (2) Since the curling edge 9 is
formed of the same material as the diaphragm, the efficiency is not significantly reduced as in the
prior art. (1) When the bobbin 4 is inserted into the diaphragm 1 of FIG. Easy assembly, cost
reduction, except for the example. It has the effect of leading to the industrial use of the present
invention. The value is great.
Brief description of the drawings Fig. 1 shows the conventional speaker diaphragm has a single
resonance. Fig. 2 is a plan view of the diaphragm in the case where the vibration occurs, Fig. 2 is
a perspective view of the diaphragm generating a bell resonance, Fig. 3 is a sectional view of the
diaphragm of the conventional dome-shaped speaker, Fig. 5.6.7 is a sectional view of a vibration
system of a conventional cone type speaker, FIG. 8 is a sectional view showing a first
embodiment of a diaphragm of a loudspeaker according to the present invention, and FIG. FIG.
10 is a diagram of the diaphragm of the speaker of the present invention. FIG. 11 is a crosssectional view showing a fourth embodiment of the diaphragm of the thin film of the present
invention. FIG. 12 is a sectional view showing a fifth embodiment of the diaphragm of the
speaker according to the present invention, FIG. 13 is a sectional view showing the sixth
embodiment of the diaphragm of the speaker according to the present invention, and FIG. It is
sectional drawing which shows 7th Example of the diaphragm of the speaker of this invention. 1
・・・ diaphragm 2 ・・・ Payf "Linda 3 ... Ring 6 ... Corgage, n. 7110 · character 7 ° 8 ...
foam plastic. 9 · · カー car kll & n · · · · · to the neck rubber 2 'lt' l 才 3 Figure EndPage: 3 years 5
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f] 1.6 Figure 77 818 Figure 9 z I-tori! JEndPage: 4 years old 12ff11tt3 Figure EndPage: ５
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