close

Вход

Забыли?

вход по аккаунту

JP2003169392

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 JP2003169392
[0001]
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a
speaker, and more particularly to a speaker in which excessive input is prevented.
[0002]
2. Description of the Related Art An example of a conventional loudspeaker is described with
reference to FIGS. 4 and 5. FIG. A signal current is input to the speaker body 1 shown in FIG. That
is, the input cord 15 is connected to the terminal 32 of the terminal board 33 shown in FIG. The
terminal plate 33 is composed of an insulating substrate 31 fixed to the frame of the speaker
body 1 and a terminal 32 fixed thereto.
[0003]
The tinsel wire 4 soldered to the terminal 32 is connected to the voice coil via the conductive
member placed on the speaker diaphragm. Also, the input cord 15 is soldered to the lug 14
which is fastened to the terminal 32 with the screw 13.
[0004]
As described above, a signal is input to the terminal plate 33 of the speaker by the input cord 15,
13-05-2019
1
but when a high level current is continuously input to the speaker, the voice coil may be melted
and the speaker may be damaged.
[0005]
In order to prevent the voice coil from melting, as shown in FIG. 4, the temperature switch 30 is
connected in series to the input cord 15 to turn on and off the speaker input at the temperature
of the input cord 15.
Also, in place of the temperature switch 30, a circuit protector which can hold an input in a
circuit manner may be used, or a bimetal may be used as a temperature protection circuit.
[0006]
SUMMARY OF THE INVENTION In the above-described conventional speaker, the temperature
switch, the server, and the kit protector are used in the front stage of the terminal plate of the
speaker, so that the voice coil is reliably melted away from the voice coil location. It was difficult
to prevent the damage. In addition, bimetal has the disadvantage that the voice uttered from the
speaker is interrupted in order to turn on and off the signal.
[0007]
The present invention has been made in view of the above-described point, and the purpose of
the present invention is to limit the speaker input by the member temperature near the voice coil,
and the high current is applied to the speaker without interruption of sound. It is an object of the
present invention to provide a speaker in which the melting of the voice coil is prevented by
limiting continuous input.
[0008]
SUMMARY OF THE INVENTION In the speaker of the present invention, the base end of the
bimetal is fixed to one of the terminals, and the contact connected to the other terminal through
a resistor is spring-loaded to the tip of the bimetal. The tip end of the bimetal contacts the other
terminal when the bimetal is low temperature, and when the bimetal reaches a predetermined
temperature or more, it is deformed against the biasing force of the spring and separated from
the other terminal. Power is supplied through the input terminal and the output terminal of the
13-05-2019
2
terminal board provided in the speaker main body configured in the above.
[0009]
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT A loudspeaker according to an
embodiment of the present invention will be described with reference to the drawings.
FIG. 1 is a side view showing a speaker according to a first embodiment of the present invention.
FIG. 2 is a side view showing the details of part A of FIG. A terminal board 2 is fixed to the frame
of the speaker body 1 shown in FIG. 1, and a signal is input to the voice coil of the speaker via
the terminal board 2 in the frame.
[0010]
In the terminal board 2, the insulating substrate 5 shown in FIG. 2 is fixed to the speaker frame,
and the input terminal 6 and the output terminal 7 are fixed to the insulating substrate 5. The
tinsel wire 4 is soldered to the output terminal 7, and the tinsel wire 4 is connected to the voice
coil through the conductive member wound on the diaphragm 3 shown in FIG.
[0011]
The base end of the bimetal 12 is fixed to the output terminal 7. A rotating member 6 biased
clockwise by a spring 11 is rotatably supported by the input terminal 6. A contact 8 is fixed to
the rotating member 6 via a resistor 10, and the contact 8 is in pressure contact with the tip of
the bimetal 12 by the elasticity of a spring 11.
[0012]
The bimetal 12 is substantially linear at a low temperature, but is curved at a high temperature.
And, below the predetermined temperature, the tip of the bimetal 12 is in pressure contact with
13-05-2019
3
the input terminal 6 by the contact 8 as shown in FIG. 2 (a). When the bimetal reaches a
predetermined temperature or more, the bimetal 12 bends against the elasticity of the spring 11
and separates from the input terminal 6 as shown in FIG. 2 (b).
[0013]
A lug 13 to which one input wire 15 is soldered is fixed to the input terminal 6 by a screw 14.
The other input line (not shown) is connected to the voice coil without passing through the
bimetal. When a high current is continuously input to the voice coil, the voice coil becomes high
temperature, and the bimetal 12 close to it is separated from the input terminal 6, and the voice
coil receives the input terminal 6, the rotating member 9, the resistor 10, the contactor 8 Since
the current is supplied through the bimetal 12 and the output terminal 7, the input current is
limited by the resistor 10.
[0014]
When the temperature of the bimetal 12 becomes low, as shown in FIG. 2A, the tip of the bimetal
12 contacts the input terminal 6 and is input to the voice coil via the input terminal 6, bimetal 12
and output terminal 7. It will not be done. In this way, the input current is limited so as not to
damage the voice coil, but since the circuit is not cut off, the sound is not interrupted.
[0015]
FIG. 3 shows a terminal board of a speaker according to a second embodiment of the present
invention. In this terminal plate, the conductive member 22 is fixed to the input terminal 20 via
the resistor 21, the spring 23 whose one end is fixed to the conductive member 22 supports the
contactor 8, and the contactor 8 is resilient by the spring 23. It is pressed against the tip.
[0016]
The other configuration is the same as that of the first embodiment, and the detailed description
thereof is omitted. When a high current is continuously input to the voice coil, the voice coil
becomes high temperature, and the bimetal 12 close to the voice coil is separated from the input
13-05-2019
4
terminal 20 as shown in FIG. The current is supplied through the resistor 21, the spring 23, the
contact 8, the bimetal 12 and the output terminal 7, so that the input current is limited by the
resistor 21.
[0017]
When the temperature of the bimetal 12 becomes low, as shown in FIG. 3A, the tip of the bimetal
12 contacts the input terminal 20 and is input to the voice coil through the input terminal 20,
the bimetal 12 and the output terminal 7 It will not be done. In this way, the input current is
limited so as not to damage the voice coil, but since the circuit is not cut off, the sound is not
interrupted.
[0018]
The embodiment is configured as described above, but the invention is not limited thereto. For
example, the base end of the bimetal may be fixed to the input terminal, and the tip may be in
contact with the output terminal. In that case, the resistor and the contact are provided on the
output terminal side.
[0019]
According to the speaker of the present invention, when the speaker input becomes excessive,
the input current can be limited to prevent the voice coil from melting. Further, since the speaker
current is not cut off, the sound is not interrupted.
[0020]
Brief description of the drawings
[0021]
1 is a side view showing a speaker according to a first embodiment of the present invention.
[0022]
13-05-2019
5
2 is a side view showing the details of part A of FIG.
[0023]
3 is a side view showing a terminal board of the speaker according to the second embodiment of
the present invention.
[0024]
4 is a configuration diagram showing an example of a conventional speaker.
[0025]
5 is a partial side view showing an example of the terminal plate of the conventional speaker.
[0026]
Explanation of sign
[0027]
DESCRIPTION OF SYMBOLS 1 Speaker main body 2 Terminal board 3 Diaphragm 4 gill wire 5
Insulating board 6 Input terminal 7 Output terminal 8 Contact 9 Rotation member 10 Resistance
11 Spring 12 Bimetal 13 lug 14 Screw 15 Input cord 20 Input terminal 21 Resistance 22
Conductive member 23 Spring 30 Temperature switch 31 Insulating board 32 Terminal 33
Terminal board
13-05-2019
6
1/--страниц
Пожаловаться на содержимое документа