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JPS61193599

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DESCRIPTION JPS61193599
[0001]
Industrial Application Field The present invention relates to a fully driven full-power loudspeaker
having a damper and an edge as a combined structure. Prior Art Conventionally, as disclosed in,
for example, Japanese Utility Model Laid-Open Publication No. 59-81193, a full-surface drive
type speaker comprises a flat portion on the outer periphery of a diaphragm and an edge is
attached to the surface of the flat portion. At the same time, the damper is attached to the back
surface of the flat portion. Problems to be solved by the present invention However, according to
the above-described prior art, since the edge and the damper are attached to the front and back
surfaces of the outer peripheral flat portion of the diaphragm, the edge and the damper are
attached. In the case of assembling the diaphragm to the frame, it is difficult to attach the
damper and the frame, and the assembling is very bad. SUMMARY OF THE INVENTION The
present invention is intended to solve the problems of the above-mentioned prior art, and its
object is to provide an all-round drive type speaker having a good quality. Means for Solving the
Problems In the present invention, there is provided a full-drive speaker in which a diaphragm
holding a voice coil is vibratably assembled to a frame provided with a magnetic circuit via an
edge and a damper. It is an object of the present invention to provide a full drive speaker
characterized in that a damper and an edge are provided on the outside of the voice coil
mounting portion. Operation According to the present invention, two horizontal parts orthogonal
to the vibration direction of the diaphragm are formed in a step shape outside the voice coil
mounting part of the diaphragm, and a damper or an edge is attached to each horizontal part.
With this configuration, the frame can be assembled in order from the upper side of each
component part frame. Embodiments of the Invention Hereinafter, an embodiment of a full drive
speaker according to the present invention will be described in detail based on FIGS. 1 to 3. FIG.
Reference numeral 1 denotes a frame having a substantially box shape, and the frame 1 is
provided with an opening step 11 at the opening thereof, and further, an intermediate step 12 is
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1
provided below the step. The intermediate step portion 11 constitutes a recessed space 14
having a bottom portion 13 on which a magnetic circuit 2 described later is installed. A desired
number of holes 13a which are used for ventilation and assembly are formed in the bottom
portion 13 at predetermined positions. The reference numeral 2 denotes a magnetic circuit,
which comprises a yoke 21 formed by bending a magnetic plate, a magnet 22.22 and! -It is
comprised by tube yoke 23.23. A desired number of holes 21a, which are used for ventilation
and assembly, are formed in the yoke 21 at predetermined positions. A magnetic gap G is formed
between the yoke 21 and the top yoke 23.
The magnetic circuit 2.2 configured as described above is fixed to the bottom portion 13.13 of
the frame 1. A diaphragm 3 is formed by vacuum or pressure forming of a resin film, and the
diaphragm 3 is integrally formed with a voice coil mounting portion 31.31 and two horizontal
portions 32.33 configured in a step shape. doing. One horizontal part 32 is provided on the outer
side of each voice coil mounting part 31.31, and the other horizontal part 33 is provided on the
outer side of the horizontal part 32 and on the outer peripheral part of the diaphragm 3 There is.
The diaphragm 3 has the voice coil 4 wound on the voice coil mounting portion 31 ░ 31 and a
frame after the inner peripheral portion 51.51 of the dampers 5 and 5 is attached to the inner
horizontal portion 31.31. It is attached to 1. At that time, the outer peripheral portion 52 of the
damper 15 is attached to the middle step portion 12 of the frame. Also, the voice coil 4 is held in
the magnetic gear tube G. Next, the inner peripheral portion 61 of the edge 6 is attached to the
horizontal portion 33 provided around the outer peripheral portion of the diaphragm 3, and the
outer peripheral portion 62 of the edge 6 is attached to the opening step 11 of the frame 1. The
full drive speaker is completed. In the full-surface drive type speaker having the above
configuration, the attachment portion of the damper 5 or the edge 6 in the diaphragm 3 is
constituted by two horizontal portions 32.33 configured in a step shape orthogonal to the
vibration direction of the diaphragm 3 , Easy to stick. In particular, sticking by
thermocompression bonding becomes possible. Next, the procedure for assembling the full drive
loudspeaker according to the present invention will be described based on FIGS. 3 to 8. FIG. The
procedure for assembling the full drive speaker is to attach the jig, attach the magnetic circuit,
attach the outer periphery of the damper, attach the inner periphery of the edge, and attach the
outer periphery of the edge. It is done by wearing. First, the procedure for attaching a jig will be
described based on FIG. 3 and FIG. In the frame 1 which is substantially box-shaped and has a
desired number of holes 13a in a predetermined portion of the bottom 13, an assembly provided
with a positioning support 72 which is inserted into the companies 13a from the outside of the
bottom 13 of the frame 1 is a jig 7 Wear For example, as shown in FIGS. 3 and 4, in the
assembling, as shown in FIG. 3 and FIG. 4, a desired number of positioning support posts ? 2 ░
72. .., And the positioning columns 72.72... Are cylindrical portions 72a for positioning the yoke
21 and the magnet 22, and gap guides 72b for positioning the yoke 21 and the top yoke 23. And
a voice coil guide portion 72 c which serves to position the voice coil 4.
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2
Next, the procedure for assembling the magnetic circuit will be described based on FIG. 3 and
FIG. Assembling is performed in the order of the yoke 21, the magnet 22, and the top yoke 23 in
which the adhesive S is applied to the lower surface of the frame 1 in which the jig T is mounted.
At this time, the yoke 21, the magnet 22, and the top yoke 23 are guided by the abovementioned assembly jig 7 and assembled at the specified position of the frame 1 to form the
magnetic circuit 2 in the frame 1. Next, a procedure for attaching the damper outer peripheral
portion will be described based on FIG. 2, FIG. 3 and FIG. The diaphragm 3 on which the voice
coil 4 and the dampers 5 and 5 are mounted is loaded at a predetermined position of the frame 1
while the assembly is guided by the jig 7. Thereafter, the outer peripheral portion 52 with the
adhesive S applied to the lower surfaces of the dampers 5 and 5 is pressed from above by the
thermocompression bonding tool P and stuck to the intermediate stepped portion 12 of the
frame 1. Next, a procedure in which the inner peripheral portion of the edge is stuck will be
described based on FIG. 3 and FIG. The adhesive jig 8 is inserted between the damper 5 and the
horizontal portion 33 provided on the outer side of the diaphragm 3. Thereafter, the edge inner
peripheral portion 61 of the edge 6 with the adhesive S applied to the lower surface portion is
attached to the horizontal portion 33 by the thermocompression bonding tool P. Next, a
procedure for sticking the outer peripheral portion of the edge will be described based on FIG.
After the attaching jig 8 is removed from the frame 1, the edge outer peripheral portion 62 is
pressed and attached to the opening step portion 11 of the frame 1 by the thermocompression
bonding tool P, and the assembly of the full drive speaker is performed. Complete. Effect of the
Present Invention In the full drive speaker of the present invention, two horizontal parts
orthogonal to the vibration direction of the diaphragm are formed in a step shape outside the
voice coil mounting part of the diaphragm, and one damper is used for the horizontal part. Since
each of the other horizontal portions is attached with an edge, the assembly can provide a fully
driven full-scale speaker. In addition, since the full drive speaker of the present invention has the
above configuration, the full drive speaker can be assembled easily, quickly and reliably. More
specifically, since the attachment portions of the edge and the damper use a thermosetting
adhesive and can be attached in a short time by the thermo-compression bonding tool, the
assembly can be shortened in time. 0
[0002]
Brief description of the drawings
[0003]
1 to 3 are views showing an embodiment of a full drive speaker according to the present
invention, FIG. 1 is a cross sectional view, FIG. 2 is an enlarged cross sectional view of an
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3
essential part, and FIG. 3 is an exploded perspective view It is.
4 to 8 are diagrams showing the procedure of assembling the full drive speaker according to the
present invention, FIG. 4 is an explanatory diagram of the assembling procedure of the jig, and
FIG. 5 is a magnetic circuit assembly Is an explanatory diagram of the procedure, FIG. 6 is an
explanatory diagram of the adhesion procedure of the damper outer peripheral part, FIG. 7 is an
explanatory diagram of the adhesion procedure of the inner peripheral part of the edge, and FIG.
8 is an explanatory drawing of the adhesion procedure of the outer peripheral edge FIG.
DESCRIPTION OF SYMBOLS 1 ... flame | frame, 11 ... opening step part, 12 ... middle step part, 13
... bottom part, 2 ... magnetic circuit, 3 ... diaphragm, 31 ... voice coil mounting part , 32.33 иии
Horizontal part, 4 и и и Heuss coil, 5 и и и Damper, 6 и и и и и и и и и и и и и и и Jig assembly, 8 и и и attachment
jig
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