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DESCRIPTION JPS523423

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DESCRIPTION JPS523423
1. Title of the invention: Patent applicant '-, -1-2: и Address Tokyo 8 Meguro-ku, Aobadai 6-17
name (859), Rio Co., Ltd. specification 52-34230, published Nissho 52. (1977) 1, 11 Japanese
Patent Application No. 1 ?-, P / F / ? [phase] Application dated go go, (1975) 4.27 pea force. 1,
Title of the Invention 1, Title of the Invention Cone-type Speaker
Kushi type steel-force 2, number 2a of the invention of the invention described in the claims
DETAILED DESCRIPTION OF THE INVENTION The present invention is to prevent abnormal
vibration of an edge and a cone of a cone type speaker. In the conventional cone type speaker, in
order to prevent abnormal vibration of the diaphragm (cone), a substance with a lot of resistance
is mixed into the cone, a mass is added, etc., and in order to take abnormal vibration of the edge.
As in the case of the cone, although a material with a lot of loss was used for the material of the
edge, or a damping material was applied, there was a defect such as a lack of timbre, and none of
them became a fundamental solution. Also, although mechanical braking and air braking have
been used, the damping substance itself may resonate or may be coupled with an external force
to the diaphragm, which adversely affects the sound quality of the diaphragm itself. In addition,
there is a disadvantage that the high Q resonance can not be sufficiently suppressed. The present
invention provides a speaker without the above-mentioned drawbacks. EndPage: Below, the
present invention will be described based on an embodiment shown in the drawings. FIG. 1
shows a schematic cross-sectional view of an on-line speaker 9 of the present invention. In the
figure, a cone 1 has a voice coil 3 suspended at its top, and its outer periphery is connected to a
frame (not shown) via an edge 2. On the cone 1, a short ring 4 formed in a ring shape by a
conductive material through a member 4 ? is suspended concentrically with the voice coil 3.
Here, the voice film 3 and the sheath 4 are formed by the air gap 9 of the magnetic circuit
consisting of the magnet 5, the center ball 6 and the top plate 8, the magnetic circuit consisting
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of the magnet 5, the top plate 8 and the yoke 7. They are respectively placed in the magnetic
field of the air gap 9 '. Therefore, when a signal is supplied to the voice coil 3 in the speaker
configured as described above, the voice coil 3 vibrates in accordance with the signal as in the
case of a normal speaker, and the cable 71 vibrates accordingly. Then, since the ring 4 coupled to
the cone 1 also vibrates in the magnetic field, a current is generated inside the short ring 4 and
the vibration is prevented by the magnetic field generated by the current. As it receives power, its
attachment will be able to damp the harmful vibrations of the cone 1 by choosing the position
etc. appropriately. FIG. 2 is a schematic cross-sectional view showing another embodiment of the
present invention, in which the short ring 4 is attached to the edge 2 to prevent abnormal
vibration of the edge 2. (The same reference numerals as in FIG. 1 denote the same parts.
In this embodiment, as can be seen from the drawing, the configuration is basically the same as
in FIG. 1, and the shape of the magnetic circuit is changed to place the short ring 4 suspended at
the edge 2 in the magnetic field. The same braking effect as in the case of the figure is obtained.
FIG. 3 shows still another embodiment of the present invention, in which the variable impedance
element 10 is connected to the short ring 4 of the speaker shown in FIG. By connecting the
variable impedance element 10 to the short ring 4 in this manner, the amount of current flowing
inside the sheet ring 4 when the short ring 4 vibrates can be controlled by changing the
impedance value of the variable impedance element 10. Since the braking effect on the cable 71
can be varied, the abnormal vibration of the cable 71 can be easily and best braked. In the
present invention, the short ring is suspended at the vibrating portion such as the cone or the
edge of the cone type speaker, and the abnormal vibration of the cone or the like can be damped
by placing the ring in the magnetic field. The sound pressure in the high range of the sound can
be made high. Also, by connecting a variable impedance element to the seat ring as shown in FIG.
3, the braking force on the diaphragm of the short ring can be varied, so that the braking effect
can be set to the optimum state. . Moreover, according to the short ring i of the present
invention, the uniform braking effect is obtained over the entire reproduction band of the
speaker, and unlike the mechanical braking and the air braking, there is no external coupling and
there is no timbre of the diaphragm. There is an effect such as no.
4, Brief Description of the Drawings FIGS. 1, 2 and 3 are schematic cross-sectional views showing
an embodiment of the present invention. 1 иииииииииииииииииииииииииииииииииииии 3 иии Voice Fill, 4 иии Short Ring 4 ?
ииииииииии Attached with members, 5 иии Mcnet, 6 иии Center Ball 7: Yoke 8: Top play 9, 9 ?: Magnetic
air gap 10: Variable impedance element name of the applicant Name of the applicant EndPage: 2
FIG. 2 b 6 b FIG. 6 , Other than the above inventor Iku-Class 0 name Mr. Iwakura Shibe Mae 151
151 name Mr. name Yu-Saka Tsukasa name Masato Sakamoto EndPage: ?
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