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JPH01108899

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DESCRIPTION JPH01108899
[0001]
FIELD OF THE INVENTION The present invention relates to stereo earphones mounted on stereo
headphone players. 2. Related Art In recent years, stereo headphone players have a wide variety
of types, from wide-spread to small-sized ones, headphones 4 to listen to it, closed-type ones to
listen indoors, and small-sized, lightweight open-type ones easy to carry. It is. Furthermore, many
stereo type earphones of the inner type which emphasizes the fashion property and does not
understand it as a headphone are used a lot. Hereinafter, an example of a conventional inner type
stereo earphone will be described with reference to FIG. As shown in FIG. 4, in the conventional
stereo earphone, the L channel and R channel / L / (hereinafter referred to as Lch and Rch)
signals from the stereo headphone player are used as Ll: L11 terminal 21 and Rch terminals of
the stereo earphone jack. The L-ch earphones 24 and the R-ch earphones 25 are transmitted via
the V.22. 23 is a ground terminal of the jack. Further, inside the jack main body 26, the Lch end
of the jack 21 is connected, the ch earphone 24 and the Rch terminal 22 of the jack and the Rch
earphone 25 are connected respectively. Therefore, the Lch signal of the stereo headphone
player is heard by the Lch earphone 24 and the Rch signal is heard by the Rch earphone 25. I
could hear only the sound of one channel if I put only one earphone in my ear. Problems to be
solved by the invention Recently, not only the inner type stereo earphones, there are many
people who walk while listening to music with stereo headphones, and ride a bicycle or a
motorcycle. L When listening to the stereo headphone player's sound with both ears, the external
sound was cut off and there was a high possibility of encountering a traffic accident or an
unexpected accident without being able to grasp the surrounding situation. Also, if you try to
listen to the music by removing only one of the earphones, you can only hear the music by the
signal of one channel, you feel unnatural and there is a problem that the other earphone
removed from the ear gets in the way. The present invention solves such a problem. When only
one of the earphones is removed, the other earphones can listen to the music from the signals of
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both channels, and the removed one of the earphones gets in the way. It is an object of the
present invention to provide a stereo earphone having Means for Solving the Problems In order
to solve the above problems, the present invention is connected to a main jack that can be
attached to a stereo headphone player and has a channel terminal connectable to each channel
via a connection jack. One earphone freely connectable to one channel terminal and the other
earphone connected to the other channel terminal are provided, and when the connection jack is
attached to the main jack, the one channel terminal is connected A changeover switch portion is
provided which is connected to the negative earphone via the connection jack, and connects the
one channel terminal to the other earphone when the connection jack is removed.
According to the above configuration, when both earphones are used to listen to both ears, by
attaching the connection jack to the main jack, one channel terminal is connected to one of the
earphones via the connection jack, Since only the other channel terminal is connected to the
earphone side of, it can be used as a normal stereo earphone. Also, when listening with only one
earphone, it is possible to remove the connection jack from the main jack, and not only to the
other channel terminal side that is always connected to the other earphone, but also via the
changeover switch section The channel terminal side is also connected, which allows it to be used
as a monophonic earphone without feeling the unnaturalness of the sound. Moreover, in this
case, one of the earphones is separated from the connection jack, so that the earphones do not
get in the way. Embodiments Hereinafter, one embodiment of the present invention will be
described based on the drawings. FIG. 1 is an outline view of a stereo earphone showing an
embodiment of the present invention. In FIG. 1, 1 is a main jack of the stereo earphone, and the
main jack body 2 has a terminal portion consisting of an Lch terminal 3 and Rch terminal 4
connectable to Lch and Rch of the stereo headphone player and an earth terminal 5 at the tip. It
is provided coaxially. The LCh earphone 6 is directly connected to the inside of the main jack
body 2, while the Rch earphone 7 is connected to the main jack body 2 to the detachable
connection jack 8. This connection jack 8 is shown in FIG. Thus, the connection jack Rch terminal
9 and the connection jack ground terminal 10 are provided at the tip, and the Rch earphone 7 is
connected to the inside of the main jack body 2 via the connection jack 8. 2 and 3, inside the
main jack body 2, an Lch metal terminal 11 disposed on the-side and connected to the Lch
terminal 3 of the main jack l and the signal line 6a of the Lch earphone 6 and , An Rch ground
metal terminal 12 which is disposed on the other side and is connected to the ground terminal 5
of the main jack 1 and contacts the connection jack ground terminal 10 when the connection
jack 8 is inserted and attached, and these Lch metal terminals 11 And a switch switch 3
connected between the Rch terminal 4 and the Rch side ground metal terminal 12 and connected
to the Rch terminal 4 of the main jack l, and a system control block is configured by these. . The
changeover switch 13 is pivotally supported at the center, and the first terminal 14 capable of
contacting the connection jack Rch terminal 9 at one end and the second terminal 15 capable of
contacting the Lch metal terminal 11 at the other end And is urged to rotate in the direction a
(FIG. 2) by a spring or the like, and when the connection jack 8 is not attached to the main jack
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body 2, as shown in FIG. When the connection jack 8 is connected to the Lch metal terminal 11
and the connection jack 8 is attached to the main jack body 2, the connection jack Rch end 9 at
the tip of the connection jack 8 contacts the first terminal 14 as shown in FIG. The second
terminal 15 at the other end separates from the Lch metal terminal 11.
Also, the ground wire 6b of the Lch earphone 6 is connected directly to the ground terminal 5 of
the main jack 1 through the inside of the main jack body 2. In the above configuration, when the
connection jack 8 is inserted into the main jack body 2 and attached to the main jack 1, the Rch
signal from the stereo headphone player from the Rch terminal 4 of the main jack 1 as shown in
FIG. It is transmitted to the Rch earphone 7 via the first terminal 14 of the changeover switch 13
and the connection jack Rch terminal 9. Further, the Lcb signal from the stereo headphone player
is transmitted from the Lch terminal 3 of the main jack 1 to the Lch earphone 6 via the Lch metal
terminal 11 of the control block. As a result, the signals of Rch and Lch are respectively
converted to sounds in the Rch earphone 7 and the Lch earphone 6 so that it can be used as a
stereo earphone. In this case, when the end of the main jack 1 is inserted into a monaural plug,
the same monaural signal is input to the Lch and Rch earphones 6.7 and a monaural sound is
output. Also, when the connection jack 8 is removed from the main jack 1: As shown in FIG. 3,
the second terminal 15 of the changeover switch 13 is connected to the Lch metal terminal 11.
After that, the Rch signal from the stereo headphone player is transmitted from the Rch terminal
4 of the main jack 1 to the Lch earphone 6 via the second terminal 15 of the changeover switch
13 and the Lch metal terminal 11, thereby Lch In addition to the Lch signal, the Rch− signal is
also transmitted to the earphone 6, and the signals of both channels are converted to sounds and
output from the Lch earphone 6. In this case, when the end of the main jack l is inserted into a
monaural bladder, a monaural signal is input to the Lch earphone 6 and a monaural sound is
output. In this case, since the Rch earphone 7 can be removed from the main jack 1 without
using the Lch earphone 6 alone, the Rch earphone 7 will not get in the way. The Rch earphone 7
and the connection jack Rch terminal 9 can be used alone as a monaural earphone. As described
above, according to the present invention, the main jack is provided with a detachable connection
jack on one earphone side, and when the connection jack is attached, one channel terminal is
connected to one earphone via the connection jack. Since the main jack is equipped with a
changeover switch that connects one channel terminal to the other earphone when the
connection jack is removed and the connection jack is removed, the other jack is not attached to
the other earphone or main jack. The earphones hear the sound not only from the single channel
μ but also from the L + R channel signal, and there is no feeling of American harmony due to the
missing signal.
Also, in this case, one of the earphones is removed from the main jack, so there is no hindrance.
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[0002]
Brief description of the drawings
[0003]
FIG. 1 is an outline view of a stereo earphone showing one embodiment of the present invention,
FIG. 2 is a partial sectional view of the main jack when the detachable connection jack of the
stereo earphone is attached to the main jack, FIG. The partial sectional view of the main jack
when the connection jack of the same stereo earphone is removed from the main jack, and FIG. 4
is an outline view of a conventional stereo earphone.
1 ... main jack, 2 ... main jack body, 3 ... Lch terminal, 4 ... Rch terminal, 5 ... ground terminal, 6 ...
Lch earphone, 7 ... Rch earphone, 8 ... connection jack, 9 ... connection jack Rch terminal, 10 ...
connection jack ground terminal, 11 ... Lch metal terminal, 12 ... Rch side earth metal terminal,
13 ... changeover switch, 14 ... 1st terminal 15 ... 2nd terminal. Agent Yoshiki Moriki / 3 II
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