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JPS55165595

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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
financial decisions, should not be based on machine-translation output.
DESCRIPTION JPS55165595
BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a honeycomb material
and a block, FIG. 2 is an enlarged top view of the same part, FIG. 3 is a perspective view of a part
of the honeycomb material block cut, and FIG. A top view showing a state in which the material
block is being rotationally expanded, FIG. 5 is an enlarged top view of a part of the rotationally
expanded honeycomb material, and FIG. 6 is a step of bonding a surface material to a core
material obtained by rotationally expanding the honeycomb material. FIG. 7 is a side sectional
view of a speaker according to an embodiment of the present invention, and FIG. 8 is a partially
cutaway perspective view of the speaker according to an embodiment of the present invention. 1
иии и и и и = cam material brolek, 2, 2 ', 2 "и и и и и и и и и и и и и Core material, 4, 4' и и и и и и Surface Material,
5, 5 '------Film adhesive,--------------------------------Film adhesive,-------------------------------? ? B A coil.
DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a speaker using a
diaphragm made of a honeycomb material, which aims to enhance the strength of the coil bobbin
mounting portion of the diaphragm and to protect the diaphragm from concentrated stress by
the coil bobbin. It is. The details of the present invention will be described below. FIG. 1 shows a
block of honeycomb material. The honeycomb material block 1 is formed by laminating a large
number of aluminum or titanium plates or foils 2 and bonding adjacent plates or foils 2 at
regular intervals). ???? FIG. 2 is an enlarged view of a part of FIG. .. Are aluminum foils
having a thickness of 6 to 7 .mu., And the adjacent aluminum foils 21 and 2 are bonded at a
distance T between the portions t. On the other hand, the aluminum foil 21 and the aluminum
foil 2 are bonded at a portion t in the middle between the bonding portions with the aluminum
foils 2 'and 2. FIG. 3 shows a honeycomb material block cut at a honeycomb material block 1'a-a
'shown in FIG. The b / force direction is rotationally expanded around the one end of the
honeycomb material block shown in FIG. FIG. 4 shows a simplified state during rotation
expansion. The rotational expansion is further continued, and rotational expansion is performed
so that the foils of the outer surface of the honeycomb material block are in contact with each
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other, and the outer surface of the honeycomb material is bonded at 1 part of FIG. FIG. 6 shows a
part of a state in which the honeycomb material block is rotationally expanded into a disk shape,
and the six foils are bonded to the other adjacent foils at regular intervals, and the bonded
portion of each foil Are folded at both ends to form a large number of hexagonal cells. 3 FIG. 6
shows a state in which a surface material 4.41 made of a round aluminum foil having a thickness
of about 20 ?m is adhered to both surfaces of a disk-shaped core material 3 made of a
honeycomb material. A film adhesive 5.51 is interposed between the disc-like core 3 and a
surface material 4 ░ 41 made of aluminum foil, and the surface material 4.47 side is heated to
melt the film adhesive 5.5 '. And press the surface material 4.41 against the disk-like core
material 3 and, as shown in FIG. 7, circular flat plate vibration formed by bonding the surface
material 4.41 to both surfaces of the disk-like core material 3 The plate 6 is obtained. The above
speaker diaphragm has a high rigidity at @. For example, when a single plate diaphragm having a
diameter of 26 and made of aluminum 20f is manufactured to have a thickness of 0.81111, the
thickness is made when a flat plate diaphragm having a diameter of 26 and made of aluminum
honeycomb material 20f is manufactured. Is 10 jff, and with the same mass, the diaphragm made
of an aluminum honeycomb material is increased in -j).
In FIG. 7, 7 is a reinforcing material formed in a ring shape on the lower surface of the surface
material 4 '. This reinforcing material 7 is formed by bonding a ring-shaped metal foil or the like,
metal is deposited in a ring shape. Or, a coating material is applied in a ring shape, and is formed
by plating in a ring shape. The portion where the reinforcing material 7 is provided is a nodal
circle of the primary resonance mode of the diaphragm 6. A coil bobbin 8 is fixed to the lower
surface of the reinforcing member 7. A voice coil 9 is wound around the coil bobbin 8. FIG. 8
shows a speaker using an upper = 1 diaphragm. In FIG. 8, 1o is a yoke integrally formed with the
center pole 11, 12 is an annular magnet fixed to the upper surface of the yoke 1o, 13 is an
annular yoke fixed to the upper surface of the magnet 12; An annular magnetic gap is formed
between the inner peripheral surface of the center pole and the outer peripheral surface of the
center pole 11. Reference numeral 14 denotes a frame plate supported by the yoke 13. A hole 15
is formed in the frame plate 14, and a diaphragm 6 is inserted into the hole 16. An outer
peripheral portion of the edge member 16 is attached to the frame plate 14, and an inner
peripheral portion of the edge member 16 is attached to the diaphragm 6. ??????????
?? In FIG. 8, when current flows through the voice coil 9 inserted in the magnetic gap, the coil
bobbin 8 vibrates together with the voice coil 9, and the diaphragm vibrates. The force generated
by the voice coil is several knee tons, and a load of several hundred grams per cd is applied to
the surface material 4 'of the lower surface of the diaphragm 6. In the present invention, since
the reinforcing member 7 is provided in a ring shape on the lower surface of the surface member
4 ', the joint between the coil bobbin 8 and the diaphragm 6 is not broken. For example, when
the coil bobbin of 160? is directly coupled to the surface material (SO?) of the lower surface of
the diaphragm of diameter 3 ocIM and driven, the coupling portion between the diaphragm and
the voice coil is broken in several tens of hours while 1 surface In the case where a ring-shaped
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reinforcing material having a thickness of 60 ? is further provided, the joint between the
diaphragm and the coil bobbin is not broken. The present invention has an advantage of being
able to prevent the breakage of the joint portion between the diaphragm and the coil bobbin
without substantially increasing the mass of the diaphragm as described above.
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