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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.
BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a view showing a conventional flat speaker
diaphragm, FIG. 2 is an enlarged view of a sectional view of FIG. 1, and FIG. 3 is a view showing
an embodiment of the present invention, FIG. 4 is an enlarged view of the cross-sectional view of
FIG. 3; 1.11 is a voice coil, 2.12 is a voice coil bobbin, is a voice plate base, 6, 16
are elastic members, and 7.8.17 ° 18 is a cut. .
DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a diaphragm for a
speaker. A diaphragm is formed by concentrically arranging a diaphragm base on a conventional
flat diaphragm etc. and bonding it to a thin film of an elastic member. Methods are known.
Concentric diaphragm base 3.4.5 shown in FIG. 1 is arranged in a plane and connected by an
elastic member 6. The voice coil bobbin 2 is fixed to the diaphragm base 3 and the voice coil l is
provided to the voice coil bobbin 2. The voice coil is disposed in the magnetic field, and vibrates
the diaphragm by the signal current flowing through the voice coil. The diaphragm I'7 '(1)
competition is transmitted from the voice coil bobbin 2 after a long time so that the vibration is
transmitted, and the lower portion transmits the elastic portion @ 6 1) the vibration 9i substrate
4. Elastic energy is transmitted to the elastic member 6 of the cut 8 and the vibration 1 anti-base
5. When the vibration frequency is low, the lower part of the cut 8C has a low rigidity fnones C
vibration base 3.4.5 of the elastic member 6, and it vibrates (when the 11 wave number becomes
high, it acts as a mechanical filter and the C working sliding portion vibrates) Concentrate from
the entire board to the center. When the diaphragm vibrates at a high frequency, not only the
diaphragm vibrates concentrically but also split vibration modes occur radially, and when the
diaphragm base is light and thin, cracking of the diaphragm base, The adhesion between the
diaphragm base and the elastic member 6 is peeled off, and the force A to peel off the elastic
member 6 at the end of the cuts q and e acts as shown in FIG. This causes a defect that the
characteristic of the diaphragm changes and an abnormal sound is generated. In order to
eliminate the above-mentioned drawbacks, the present invention is configured to prevent the
peeling of the film-like elastic member by inclining the end of the connection portion of the
groove or the cut portion of the diaphragm base in a convex shape. Details of the present
invention will be described with reference to the drawings. FIG. 3 is a view showing an
embodiment of the present invention, in which a diaphragm base 13.14.15 made of a foamed
resin material or the like is arranged in a circle of about tL, and a thin elastic member 16 is
formed on the surface. It adheres by the contact layer etc. The voice coil bobbin 12 is fixed to the
diaphragm base 13, and a voice coil is provided at an end of the voice coil bobbin and disposed
in a magnetic field. As shown in a cross-sectional view, the new pad 1 shape of the diaphragm
base 13.14.15 is formed in a V-shape such that the end of the connecting portion is inclined in a
convex shape. FIG. 4 is an enlarged view of a part of the cross section of FIG. 3B ', in which the
diaphragm bases 14 and 15 are connected by the elastic member 16 at the cut lft, and the
diaphragm bases 14 and 15 are U-shaped in cross section. When the diaphragm substrate 14
vibrates in the upward direction, the force that is pulled up by the elastic member 16 moves in
the diaphragm substrate 15, and the connecting part end of the diaphragm base 15 is configured
to be inclined in a convex shape. The elastic portion H16 attached to the surface is pulled in the
surface direction, and the peeling force in the direction perpendicular to the surface is weakened.
When the diaphragm substrate 14 vibrates downward, the elastic member 16 attached to the end
of the connecting portion of the diaphragm substrate 14 is 9,. 2 · (3) 9b / surface J is pulled and
the peeling force in the direction perpendicular to the surface is weak 1 and 1 At the end of the
peristaltic handling substrate 15, it is pulled downward and the peeling force beam 1j is not one.
: 1 Ji, the edge of the diaphragm base is inclined in a convex shape / C, the strength at the edge is
increased, and even the weak diaphragm base is less damaged, and the split vibration is stronger
Become. Although the case of the concentric factor has been described, the same applies to a
diaphragm which is not concentric and is arbitrarily divided, and is the same even if the vibrating
body and the elastic member are reversed. As described above, according to the present
invention, the effect of being able to configure a diaphragm that is lighter and has a larger peel
strength is great.
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