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JPS5561395

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This translation is machine-generated. It cannot be guaranteed that it is intelligible, accurate,
complete, reliable or fit for specific purposes. Critical decisions, such as commercially relevant or
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DESCRIPTION JPS5561395
BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a front view of a diaphragm used in an
electrodynamic speaker according to an embodiment of the present invention, and FIGS. 2A and
2B are front views of a clamp ring used in the same speaker. Fig. 3 is a partial sectional
perspective view of the speaker, Fig. 4 is a perspective view of an essential part of a top plate in
the speaker, and Figs. 5A and 5B show other examples of the clamp ring in the speaker It is a
front view, a partially enlarged side view. 1 и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и
и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и clamp ring, 5 и и и ring и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и
ииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииии
и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и. the top plate, 11 ...... notched grooves 12, 13 ......
insertion hole, 14 ... ... leads, 16.17 ...... point soldering.
DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an electrodynamic
speaker in which a diaphragm unit having a voice coil formed on a film-like insulating material is
installed in an annular magnetic circuit, and the diaphragm is not wrinkled. It is an object of the
present invention to provide an electrodynamic speaker which can be held and which can hold
the diaphragm unit in a magnetic circuit. (As described above) (If a diaphragm with a voice coil
formed on a lum-shaped insulating material is installed in a magnetic enclosure, it has
conventionally been equipped with two parts: magnetic or nonmagnetic / magnetic and magnetic
or nonmagnetic) The non-driving portion (including one end of the voice coil) outside the
vibrating membrane is held by the magnetic or nonmagnetic ring, and the non-driving portion
(including the other end of the voice coil) in the center of the vibrating membrane is magnetic or
non It hold | maintained by the magnetic disc, and fixed to the yoke plate which comprises a
magnetic circuit after that, top plate (?). Specifically, when a disc with a diameter of 66 is placed
in a ring with an inner diameter of 64 and the diaphragm is fixed to the ring and the disc, the gap
between the ring and the disc Fix the vibrating membrane so that the voice coil is located in
part). However, in this case, since the ring and the disc are separately fixed to the vibrating
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membrane at the time of holding the vibrating membrane, the alignment between the vibration i
and the ring and the disc may vary, and the variation may occur. This phenomenon has a
drawback in that the acoustic characteristics are adversely affected. Also, since the ring and the
disc are separate, when the diaphragm unit is fixed to the magnetic circuit after fixing the
diaphragm, the one disk and the ring move independently (rotate). Therefore, there is a problem
that the moving film is deformed and wrinkles occur, and in the extreme case, the vibrating film
is broken. As described above, when the diaphragm and ring, and the disc are fixed at first, to the
waste where wrinkles are generated, the tension changes when 1) the acoustic characteristics are
adversely affected. When the diaphragm unit as described above is installed in an annular
magnetic circuit, one end of the voice coil is fixed on the top flat of the magnetic circuit and on
the other end cayoke plate (center ball). In order to connect the lead wires to both ends of this
voice coil by soldering, in fact, the above-mentioned soldering comes in contact with the top plate
and yoke plate (center ball) on the top plate, Therefore, there is a disadvantage that the vibrating
membrane unit is rattling, and it floats up from the magnetic circuit and the fixing becomes
extremely difficult.
The present invention eliminates the above-mentioned conventional drawbacks. An embodiment
thereof will be described with reference to the attached drawings. FIG. 1 shows a vibrating film,
in which a voice coil 2 is spirally formed of aluminum or the like on a film-like insulator 1 of
polyimide, polyamide, Teflon or the like. The clamp ring 4 is fixed to the clamp ring 4 as shown
in FIG. 2 by bonding or the like, and the ring / ring portion 6 and the disk portion 6 as shown in
FIG. The ring 5 is integrally formed of a connecting portion 7 for connecting the ring-shaped
portion 5 and the disc portion 6. At this time, the outer diameter of the ring-shaped portion 6 of
the clamp ring 4 is equal to the outer diameter of the vibrating membrane 3, and the inner
diameter of the ring-shaped portion 5 is substantially equal to the diameter of the outermost
portion of the voice coil 2. Is approximately equal to the diameter of the innermost portion of the
voice coil 2. Therefore, when the vibrating membrane 3 is fixed to the clamp ring 4, the voice coil
2 is positioned in the gap between the ring-shaped portion 5 and the disc portion 6, and its end
portions 2 a and 2 b are each ring-shaped portion 69 It will be located in the disc part 6.
According to the above configuration, since the ring-shaped portion 6 and the rounding portion 6
are integrated by the connecting portion 7, the operation when integrating the clan 7 ring 4 and
the diaphragm 3 is easy (The displacement of the clamp ring 4 and the clamp ring 4 at the time
of bonding with the membrane 3 is reduced). In addition, in the case of fixing the diaphragm unit
integrated with the clamp ring 4 and the diaphragm 3 to the magnetic circuit as in the case of toi,
the ring shaped portion 6 is screwed with any of the disc portion 6). However, since the ring 6
and the disk portion 6 are integrated with each other, the number of adverse effects on the
diaphragm 3 is reduced. That is, the change of the tense due to the wrinkles is a little and stable
acoustic characteristics are obtained. This diaphragm unit is installed in a magnetic circuit, and
FIG. 3 shows a state extension in which a lead wire is connected to the imaging film unit by
soldering. Here, 8 is a yoke plate, 9 is a ring-shaped magnet, 10 is a ring-shaped top plate, and
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integrally has a flange portion 10a forming a recess for housing the diaphragm unit as shown.
The notch groove 11 is formed by notching a part of the hip portion 10a. Further, the yoke plate
8 is also inserted with the lead holes 12.13. The vibrating film 3 is below the moving film unit in
which the lead wires 14.14 are soldered to the both ends 2a and 2b of the voice coil 2 on the
flange portion 1oa of the top plate 1o and the yoke plate 8 of such a magnetic circuit. JC 2161 C
? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?? ?7? 71o?
At this time, one end 2a of the voice coil 2 and the soldering point 16 of the lead wire 140 are
located in the cutout groove 11 of the top plate 10, and the soldering point 17 of the other end
2b of the voice coil 2 and the lead wire 14 is a yoke plate Since it is located in the insertion hole
12 of 8, it can fix to the yoke plate 8 or the top plate 10, without rattling a vibration laden unit.
The lead wire 14 soldered to one end 2 a of the voice coil 2 is drawn out of the yoke plate 8
through the hole 13 formed in the yoke plate 8. Also, the holes 18 provided in the disc portion 6
of the clamp ring 4 are provided for the purpose of preventing the dissipation of heat during
soldering. FIGS. 6A and 6H show another example of the clinching 41 according to the present
invention. While the example of the second M is one connecting portion 7, in FIG. 6, the
connecting portion 7! Are formed, and the connection portion 71 is further formed by etching
the ring-shaped portion 6 'and the disk portion 6'. From the point of Ail 'J of the magnetic flux, it
is preferable to have a small number of connection part 2), 7.7', but even if a plurality of eight
connection parts 7 'are formed as described above, leakage of magnetic flux There is no problem
in practical use. As described above, according to the present invention, the clamp ring in which
the ring-shaped portion and the disk portion are integrally formed by the connecting portion is
used, and the yoke plate and the top plate are soldered to the voice coil and the lead wire. By
providing holes (grooves) for relief, it is easy to manufacture a 1% dynamic electric-to-sound ?
? converter in which a spiral voice coil is installed in an annular magnetic circuit, which has
been considered difficult in the past. It is possible to
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