close

Вход

Забыли?

вход по аккаунту

JPS57158287

код для вставкиСкачать
Patent Translate
Powered by EPO and Google
Notice
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 JPS57158287
BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a sectional view of a cone speaker to which the
protection device of the present invention is applied, FIG. 2 is a perspective view showing a
magnetic circuit of the speaker, and FIG. 3 is a circuit diagram of the protection device of the
present invention. Indicates 1 ······ Magnetic circuit, 4 · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · ·
· · · · · · · · · · · · · · · · · · · · voice coil, 7 ······ Temperature temperature.
DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a protection
device for a speaker which prevents the speaker from being destroyed by heat generated from a
voice coil. Conventionally, as a speaker protection device, a speaker / stem network part has an
excess of 4171 cl (% Ichikawa's Hi It '),' or 7.2-Ka □ □. , 6. あ、。 1, the main direct cause of
speaker destruction is the heat generated from the voice coil, which is incomplete by the current
limit alone). 11 If the amplifier is damaged and C, the Sbee force no Hois coil, 1 Mte'M pressure
within the specified current of the heat flows into the pump for a long time. 2; \) i :: l :, 1 could be
destroyed by heat. Therefore, in order to solve the above-mentioned drawbacks, the present
invention mounts the temperature fuse on the top plate closest to the voice coil in the magnetic
gear and the voice, and connects the fuse in series with the voice coil. It is an object of the
present invention to provide a speaker protection device that prevents breakage of a speaker due
to heat generation of a coil. Hereinafter, the present invention will be described based on the
embodiments of the drawings. FIG. 1 is a sectional view of a cone speaker to which the protection
device of the present invention is applied, and FIG. 2 is a perspective view showing a magnetic
circuit of the speaker. The figure shows a circuit diagram of the protection device of the present
invention. In the drawing, reference numeral 1 denotes a magnetic circuit, and the nuclear
magnetic circuit 1 is composed of a magnet 2, a yoke 3 and a top plate 4, and a voice coil 6 is
disposed in the magnetic gap 5. The top plate 4 is cut away from a part of the outer periphery
thereof to form a notch 4a on the magnet 2, and the notch 4a is exchangeable so that the
temperature is 21034) 1 Use 7 is attached. The temperature fuse 7 is connected in series
13-05-2019
1
between the output of the amplifier A and the voice coil 6 as shown in FIG. As the temperature
fuse 7, one melting at a temperature immediately before the voice coil 6 is burnt out is used. In
the figure, 8 is a damper, 9 is a cone, 10R is a tool, 11 is a frame. Then, when the output current
of the amplifier A flows to the voice coil 6 through the temperature heat 71, the coil 61 operates
to vibrate the cone 9 and generates the heat 1 as well. On the other hand, this Joule heat is 9% fi
y h 7.7. L /-) 4 * L, 'C' FMSK temperature fuse 7 delivered.
Then, the heat generation temperature of the voice coil 6 reaches a temperature just before
burnout [, and the temperature fuse 7 is melted by this temperature, [the current supply to the
voice coil 6 is cut off; It can be totally prevented. (1) Screaming: As in the case of the present
invention, the notch portion 4a is provided in the top plate 4 constituting the magnetic gap 5 of
the magnetic circuit 1 as on paper, and the temperature heats 7t-attachment 0351) is attached to
the notch portion 4a. ′\、。 And the voice coil 6 connected in series to the fuse 7'1. Therefore,
since the temperature fuse 7 is attached to the notch 4aK of the top plate 4 closest to the voice
coil 6, the detection effect of heat generated from the voice coil 6 is large, and the temperature
just before the voice coil 6 burns out Since the temperature fuse 7 immediately melts and cuts off
the current supplied to the voice coil 6, it is possible to protect the voice coil 6t from burnout and
the like. Further, since the cutaway portion 4a of the top plate 4 can be easily formed, the cost is
low, and since the cutaway portion 4aK temperature fuse 7 is mounted, the heats 7 can be easily
replaced, and it is compact and easy to operate. Do not get in the way in handling.
13-05-2019
2
1/--страниц
Пожаловаться на содержимое документа