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JP2006228617

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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
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DESCRIPTION JP2006228617
PROBLEM TO BE SOLVED: To provide a plug and a socket for a speaker cable which can flow a
large current safely and stably and which does not select an inserting direction. SOLUTION: A
socket body 102 in which a guide 103 having a plurality of narrow grooves 103a is formed
exposes a part from each narrow groove 103a, and a first socket side contact 104 disposed
inside the guide; An insertion part and core wire fixing provided with a second socket side
contact 105 disposed in the insertion hole 106, inserted into the plug insertion hole 106, and
provided with an internal space fitted to a guide disposed inside the insertion hole A plug body
301 having a portion 305 and a cable insertion portion is disposed in the insertion portion 302
and is in contact with a portion of the first socket side contact exposed from each narrow groove
of the first socket side contact 308; And a second plug-side contact 313 disposed outside of 302
and in contact with the second socket-side contact 205. [Selected figure] Figure 10
Speaker cable plug and socket, and connector for speaker cable by the plug and socket
[0001]
The present invention relates to a connector for a speaker cable, and more particularly to a plug
and a socket for a speaker cable suitable for a connecting cable between an amplifier and a
speaker in a multi-channel speaker system in the audio field, and a connector for the speaker
cable by them. .
[0002]
In recent years, so-called home theater systems are also becoming widespread, which can
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1
experience the force and realism of movie theaters even at home.
The listener is a conventional AV system by adding to the screen image projected on a large
screen the multi-channel sound corresponding to the image, for example, a highly realistic and
powerful sound effect emitted from a 5.1 channel sound system You can enjoy video and audio
that can not be obtained with
[0003]
As a speaker cable connector in such a sound system, the inventors of the present invention have
a hollow plug body with a terminal holding tongue for holding the speaker terminal and a cable
holding tongue for holding the stranded wire of the speaker cable. The thing which inserted the
terminal which has is proposed previously (for example, refer to patent documents 1).
[0004]
Multi-channel sound systems such as those for home theaters mentioned above are considered to
be increasingly high-powered in the future in order to enhance their sound effects, force, or
presence, etc. When the speaker output is increased, it is considered that a current of 20 to 30 A
may instantaneously flow in the speaker cable, in which case the structure of the connection
terminal for the speaker cable connector proposed earlier is There are concerns in terms of
durability, etc.
[0005]
In the speaker cable plug or socket where large current may flow as described above, and the
connector for the speaker cable, for example, a thin bar or other electrical conductor such as a
metal hairpin may be mistakenly inserted into the socket. Then, the current flows to the human
body through the contact tongues and the conductors of the terminals, and there is a possibility
that an electric shock may occur, or the circuit may be shorted to cause an unexpected trouble.
JP 2004-72761 A
[0006]
Therefore, according to the present invention, by forming the insulation performance extremely
high with a simple structure, a large current can be safely and stably supplied, and moreover, a
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plug and a socket for a speaker cable and any plug-in direction, and It is an object of the present
invention to provide a speaker cable connector according to the above.
[0007]
The connector for a speaker cable according to the present invention, which has been made for
the purpose of solving the above problems, comprises a plug to which the speaker cable is
connected and a socket into which the plug is inserted. A plug made of an electrical insulating
material comprising a plug-in portion forming an inner space fitted to a guide disposed at the
center of the inner portion, a core wire fixing portion continuous to the plug-in portion, and a
cable insertion portion continuous to the fixing portion A first plug is disposed in the inner space
of the insertion portion and is incorporated in the guide of the socket and contacts a first socketside contact partially exposed from a narrow groove formed in the outer surface of the guide A
second contact, and a second contact disposed on the outer surface of the insertion portion and
in contact with a second socket-side contact disposed on the inner surface of the plug insertion
hole of the socket A plurality of small-width grooves arranged in the center of the insertion hole
and extending along the insertion direction on the outer surface, the socket holding a gap
between the plug insertion hole and the inner peripheral wall of the insertion hole; A socket body
made of an electrical insulating material having a guide formed thereon, a first socket side
contact disposed inside the guide with a portion thereof exposed from the narrow groove, and an
inner circumferential surface of the plug insertion hole And a second socket-side contact
disposed in
[0008]
In the connector for a speaker cable of the present invention, the plug insertion holes have
symmetrical cross-sectional shapes in the vertical and horizontal directions, the guides have
symmetrical cross-sectional shapes in the vertical and horizontal directions, and the insertion
holes and the guides are central Preferably, the first plug contacts are given the cross-sectional
shapes corresponding to the plug insertion holes and the respective guides.
Here, it is more convenient that the plug insertion hole is substantially rectangular in cross
section, and the guide disposed therein is also substantially rectangular in cross section.
[0009]
Further, in the speaker cable connector of the present invention, the socket may include a
movable member which moves when the plug is inserted, and a pair of control contacts which
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are opened and closed by the movable member.
[0010]
The connector for a speaker cable according to the present invention comprises a plug to which
the speaker cable is connected and a socket into which the plug is inserted, and the plug fits into
a guide disposed at the center in the plug insertion hole of the socket. A plug body made of an
electrical insulating material comprising a formed insert portion, a core wire fixing portion
connected to the insert portion, and a cable insertion portion connected to the fixed portion is
disposed in the internal space of the plug portion. A first plug-side contact that contacts a first
socket-side contact that is internally provided in the guide of the socket and partially exposed
from the narrow groove formed in the outer surface of the guide; and the socket disposed on the
outer surface of the insertion portion A second plug-side contact in contact with a second socketside contact disposed on the inner surface of the plug insertion hole of A socket made of an
electrical insulating material provided with a guide held with a gap between the insertion hole
and the inner peripheral wall and disposed at the center in the insertion hole and having a
plurality of narrow grooves formed on the outer surface along the insertion direction The main
body includes a first socket side contact disposed inside the guide with a portion thereof exposed
from the narrow width groove, and a second socket side contact disposed on the inner
circumferential surface of the plug insertion hole Being formed, high insulation performance can
be realized with a simple structure, a large current can flow, and plug insertion is not directional.
[0011]
That is, the socket in the speaker cable connector of the present invention is made of an
electrically insulating material, and the socket main body includes the plug insertion hole and the
guide having the plurality of narrow grooves in the plug hole, and a part of each socket is
exposed The first socket-side contact and the first socket-side contact, which are disposed inside
the plug insertion hole, are formed from the first socket-side contact disposed inside and the
second socket-side contact located inside the plug insertion hole outside the guide. There is a
guide made of insulating material between the two socket-side contacts, and the first socket-side
contact will be partially exposed from the narrow groove and disposed inside the guide, thus the
socket Inserting the test finger inside does not contact the conductive part of the connector.
[0012]
In addition, while the first socket side contacts in the socket are partially exposed from the
plurality of narrow grooves and disposed inside the guide, the first plug contacts in the plug are
exposed from the narrow grooves The contact with the plurality of first socket side contact
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portions increases the number of contact lines, thereby increasing the contact area.
Moreover, the second plug-side contact on the plug side contacting the first socket-side contact is
disposed on the outer surface of the plug-in portion of the plug, and a large contact area is
secured. It becomes possible to flow a large current.
[0013]
Furthermore, in the speaker cable connector of the present invention, the plug insertion hole of
the socket, the guide, the first socket side contact and the second socket side contact are formed
symmetrically with respect to the center line of the socket in the vertical and horizontal
directions. On the plug side to be inserted into this socket, it is sufficient if the insertion part, the
first plug side contact and the second plug side contact are formed correspondingly to the abovementioned symmetrical form, and by this the plug for the socket Since there is no directionality
both in the vertical and horizontal directions in the plug-in, the connection polarity of the
speaker will never be reversed as long as the plug is inserted into the socket.
[0014]
Furthermore, in the speaker cable connector of the present invention, the socket is moved by the
movable member when the plug is inserted, and is opened and closed by the movable member,
and the first socket side contact or the second socket side contact Alternatively, in the structure
provided with the control contacts for opening and closing both of them, the first socket side
contact is conducted only when the plug is inserted, and thus a safer connector can be obtained.
[0015]
Next, with reference to the drawings, embodiments of the speaker cable connector of the present
invention, and the plug and socket constituting the same will be described.
An example of the illustrated connector for a speaker cable according to the present invention is
for connecting a speaker and a speaker cable, and the speaker cable and a speaker output
terminal portion of an amplifier in a multi-channel sound system.
FIG. 1 is a perspective view showing an amplifier side socket provided in an amplifier and an
amplifier side plug of the speaker cable in an embodiment of the speaker cable connector
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according to the present invention, and FIG. 2 is a speaker side plug of the speaker cable and the
speaker cable 3 is an enlarged perspective view of the amplifier side socket, FIG. 4 is a sectional
view of the amplifier side socket along line A-A in FIG. 3, and FIG. 5 is a perspective view showing
the relationship between the guide and the contact in the amplifier side socket 6 is a perspective
view of the contacts in the amplifier side socket of FIG. 5, FIG. 7 is an enlarged perspective view
of the amplifier side (speaker side) plug, and FIG. 8 is a perspective view of the plug of FIG. 7 is a
cross-sectional view taken along the line B-B of the plug of FIG. 7, and FIG. 10 is a cross-sectional
view showing a connected state in which the amplifier side (or speaker side) plug is fitted to the
amplifier side (or speaker side) socket 11 is a vertical sectional view showing the relationship
between the socket side contact and the plug side contact along the line HH in FIG. 10, FIG. 12 is
a perspective view showing an example of the speaker side socket, and FIG. 14 is a perspective
view showing another embodiment of the amplifier-side socket in the speaker cable connector of
the present invention, and FIG. 15 is an amplifier-side socket along the line D-D in FIG. 16 is a
plan sectional view showing the connection state between the amplifier side socket and the
amplifier side plug shown in FIG. 14, and FIG. 17 is an amplifier side socket and amplifier side
plug according to another embodiment of the speaker cable connector of the present invention. It
is a plane sectional view showing the connection state with.
[0016]
The speaker cable connector according to the present invention is, as shown in FIGS. 1 and 2 as
an example, an amplifier socket 60 for six channels fixed to the amplifier 10 and a speaker
socket for one channel fixed to the speaker enclosure 20 An amplifier-side plug 300 connected
to each end of six speaker cables 30 having appropriate lengths and diameters and a speakerside plug 400 having the same configuration as the plug 300 are provided.
[0017]
The amplifier 10 includes, for example, a socket that is a speaker output terminal for a 5.1
channel sound system, and includes six channels of amplification circuits, so the amplifier-side
socket 100 has six sockets of the same configuration. The amplifier 10 is mounted in parallel on
the rear surface of the case and electrically connected to the amplification circuit of each
channel.
[0018]
As shown in FIG. 3, the six amplifier side sockets 100 are accommodated and fixed in one molded
case 101.
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As shown in FIG. 4, each amplifier-side socket 100 has a socket body 102 in which a plug
insertion hole 106 described later is formed by molding a synthetic resin material, a guide 103
positioned at the center of the insertion hole 106, and the guide 103. A first socket side contact
104 and a second socket side contact 105 press-fitted from the back to the inside are provided.
Here, the socket body 102 and the guide 103 are formed of an electrically insulating synthetic
resin molded body, and the contacts 104 and 105 are formed of a metal conductor.
[0019]
The socket body 102 is formed in a rectangular parallelepiped shape, and a plug insertion hole
106 having a substantially square cross section is provided on the front side.
[0020]
The guide 103 positioned substantially at the center of the insertion hole 106 has a substantially
square cross section, and has three prismatic guides in the example of the figure, and each guide
has a rear end excluding the tip of the prism. They are arranged in three stages (three rows in the
horizontal direction) in the vertical direction via the narrow grooves 103a formed between the
respective prismatic portions.
The guide 103 forms a gap with the inner peripheral wall surface of the plug insertion hole 106
and is disposed inside the plug insertion hole 106 with the center and center of the plug
insertion hole 106 aligned.
The guide 103 is integrally formed with the socket main body 102 so as to extend from the
bottom surface (inner back surface) of the plug insertion hole 106 toward the opening side of the
plug insertion hole 106.
[0021]
The first socket side contact 104 is press-fitted into the inside of the guide 103.
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That is, as shown in FIG. 6, the first socket side contact 104 is viewed from a plane where the
horizontally extending tongue piece 108 is disposed in a direction in which one end of the
vertically flat hanging tongue piece 107 is bent horizontally at right angles. It is formed in a
substantially L-shape.
In FIG. 5 and FIG. 6, two substantially E-shaped notches 109 are formed at the tip of the side-toside upright wall-like tongue 108, and the tip of the side-to-side tongue 108 located at the
bottom of each notch 109 is tapered Is formed on the tapered surface 109a.
[0022]
As shown in FIG. 5, the first socket side contact 104 is attached and fixed to the socket body 102
by being positioned by pressing the sideways tongue piece 108 into the inside of the guide 103.
That is, the notch 109 at the tip is positioned in the narrow groove 103a between the three
prismatic guides of the guide 103, and the space for press-fitting of the contact 104 formed
inside the guide is the back of the socket body 102. It is inserted by press fitting from. As a
result, a part of the notch 109 is provided so as to be exposed from the narrow groove 103 a
between the guides 103.
[0023]
As shown in FIG. 4, the second socket side contact 105 has a rectangular cylindrical body 110
having a sectional shape corresponding to the sectional shape of the plug insertion hole 106 and
a tongue extending downward from the lower wall of the rectangular cylindrical body 110. It
consists of a piece 111. The rectangular cylindrical body 110 is in contact with the inner
peripheral wall surface of the plug insertion port 106 and is fitted into the plug insertion hole
106. Further, in the second socket side contact 105, a pressing ring 112 having a shape along
the plug insertion hole 106 is fitted into the plug insertion hole 106 from the front side of the
hole to prevent the second socket side contact 105 from coming off doing. The upper wall of the
rectangular cylindrical body 110 of the contact 105 is partially bent toward the inside of the
plug insertion hole 106 into a substantially mountain shape to form a springy stopper 110a.
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[0024]
On the other hand, the amplifier-side plug 300 of the speaker cable (in the present invention, the
speaker-side plug 400 also has the same structure as this plug 300, so the description will be
omitted. As shown in FIGS. 7 to 9, the hollow plug body 301 has a substantially cruciform planar
shape. One branch portion 302 (left side in FIGS. 7 and 9 and right side in FIG. 8) of the cross in
the plug body 301 is an insertion portion with respect to the socket 100, and the branch portion
303 on the opposite side is a speaker cable insertion portion The branch parts 304 and 305
which are orthogonal to each other are formed as core fixing parts of the speaker cable.
Hereinafter, in the present specification, reference numeral 302 denotes an insertion portion into
a socket, 303 denotes an insertion portion of a cable, and 304 and 305 denote fixing portions of
core wires.
[0025]
The insertion portion 302 has a cross-sectional outer shape corresponding to the plug insertion
hole 106 of the socket 100. At the front end, an opening 306 having a shape corresponding to
the cross-sectional outer shape of the guide 103 in the socket 100 is formed, and on the inner
wall surface of the opening 306, a rib 307 corresponding to the narrow groove 103a is provided.
The first plug side contact 308 is incorporated inside (see FIG. 11).
[0026]
As shown in FIG. 9, FIG. 10 and FIG. 11, the first plug side contact 308 has two square cylindrical
members 309 fitted in each prismatic guide of the guide 103 in the inside of the insertion
portion 302, between the two To keep space in A slit 309 a having a width corresponding to the
thickness of the first socket side contact 104 is formed continuously to the rib 307 on the
opposing wall of the rectangular cylindrical bodies 309. In addition, a flat tongue piece 310 is
integrally formed on the upper wall of one rectangular cylindrical body 309. The tongue 310
extends toward the inside of the speaker cable insertion portion 303. In the fixing portion 305 of
the cable core wire positioned on the front side of the cable insertion portion 303, a rectangular
cylindrical cable presser 311 whose front and rear are opened is accommodated. The free end of
the tongue piece 310 is inserted into the inside of the cable presser 311 installed in the core wire
fixing portion 305. Then, the presser screw 312 is screwed into the upper wall of the cable
presser 311.
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[0027]
On the other hand, as shown in FIG. 7, the second plug-side contact 313 has an outer rectangular
cylindrical body 314 having a cross-sectional outer shape that covers the outer surface of the
insertion portion 302 in the plug body 301. A rectangular opening 314a is provided on both side
walls of the rectangular cylindrical body 314 (see FIGS. 7 and 8). The outer rectangular cylinder
314 is fitted on the outer surface of the insertion portion 302 from the front thereof. As shown
in FIG. 10, the tongue piece 315 extending straight from the rear end of the outer rectangular
cylindrical body 314 is accommodated in the core wire fixing portion 304 inside the speaker
cable insertion portion 303 through the slit in the plug body 301 It extends inside the cable
retainer 316. In the core wire fixing portion 304, a press screw 317 is screwed into the outer
wall of the core wire fixing portion 304 in a direction orthogonal to the core wire to be inserted.
In the present invention, the fixing of the core wire is not limited to the presser screws 312 and
317. For example, a spring force can also be used as a fixing means of the core wire.
[0028]
Next, as shown in FIG. 9, the positive cable 31 and the negative cable 33 are inserted into the
speaker cable 30 through the openings in the speaker cable insertion portion 303, and the
speaker screws 30 are tightened. Thus, the core 32 of the positive side cable 31 is held between
the tongue 310 and the cable presser 311, and the core 34 of the negative side cable 33 is held
between the tongue 315 and the cable press 316. The speaker side plug 400 in the speaker cable
30 has the same configuration as the amplifier side plug 300. In FIG. 9, the cap screw 312 is
shown in a tightened state, and the cap screw 317 is shown in a pre-clamped state.
[0029]
Further, the speaker side socket 200 is also configured the same as the amplifier side socket 100.
12 and 13 show details of the speaker side socket 200. FIG. The speaker side socket 200
includes a socket body 202, a guide 203, a first socket side contact 204, and a second socket
side contact 205. The first socket side contact 204 is embedded by press-fitting the inside of the
three prismatic guides 203 by exposing a part except for the tip from the narrow groove 203a.
The second socket side contact 205 has a cross-sectional shape corresponding to the crosssectional shape of the plug insertion hole 206, and is provided with a rectangular cylindrical
body 210 fitted in the plug insertion port 106. As illustrated in FIG. 2, the speaker side socket
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200 is fixed so as to embed the socket body 202 in the back surface of the speaker enclosure 20
or the like, and the contacts 204 and 205 are electrically connected to the speaker.
[0030]
In the speaker cable connector of the present invention, for example, as shown in FIG. 10, when
the amplifier-side plug 300 is inserted into the amplifier-side socket 100, the rectangular
cylindrical body 309 inside the first plug-side contact 308 is the amplifier-side socket 100. , And
the slit 309a of the rectangular cylindrical body 309 is expanded while passing through the
narrow groove 103a between the guides 103 in the first socket side contact 104, as shown in
FIG. The first socket side contact 104 and the first plug side contact 308 come in contact with
each other so as to sandwich the notch 109. At the same time, the rectangular cylindrical body
314 of the second plug side contact 313 of the amplifier side plug 300 fits into the rectangular
cylindrical body 110 of the second socket side contact 105 of the amplifier side socket 100, and
the opening 314a is stopped. The amplifier side plug 300 is lightly locked to the amplifier side
socket 100.
[0031]
As described above, when the amplifier-side plug 300 is inserted into the amplifier-side socket
100, the first socket-side contact 104 and the first plug-side contact 308 make line contact at
two points, and the second socket-side contact The surface contact between 105 and the second
plug side contact 313 is made. Since a large contact area is realized by the line contact and the
surface contact, problems such as burnout do not occur at all even if a large current flows.
[0032]
In the above insertion, even if the amplifier side plug 300 is turned upside down and inserted
into the amplifier side socket 100, the amplifier side socket 100 is formed symmetrically with
respect to a horizontal line or a vertical line passing through the center thereof Since 300 is also
formed symmetrically with respect to a horizontal line or vertical line passing through the center,
contacts 104 and 308 and contacts 105 and 313 reliably contact with each other in any
insertion posture.
[0033]
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11
Also, if the amplifier-side plug 300 is not inserted into the amplifier-side socket 100, the first
socket-side contact 104 should have insulation even if it is attempted to insert a metal conductor
such as a ballpoint pen into the amplifier-side socket 100. The metal conductor is in contact with
the first socket side contact 104 because the contact 104 is accommodated inside the guide 103
made of synthetic resin and exposed only from the portion of the narrow groove 103a. There is
no.
Therefore, even if a metal conductor is inserted, no current flows and it is extremely safe.
[0034]
When the speaker plug 400 is inserted into the speaker socket 200 as described above, the
contact area is large, and even if the plug is inserted upside down, the above points can be
reliably energized, and the speaker socket 200 is made of metal. If you try to plug in a conductor,
you can not insert it.
[0035]
Next, the speaker cable connector of the present invention may be equipped with a function of
energizing only when the amplifier-side plug is inserted into the amplifier-side socket.
14 to 16 show an example of the speaker cable connector of the present invention to which such
a function is added.
[0036]
The connector for a speaker cable according to the present invention shown in FIGS. 14 to 16 is,
for example, for a two-channel stereo amplifier, and has two amplifier side sockets 500. Each
amplifier-side socket 500, like the amplifier-side socket 100 shown in FIG. 1 and FIG. 3 to FIG. 6,
has a socket body 502, a prismatic guide 503 with a narrow groove 503a, and a part exposed
from the narrow groove 503a. And a second socket-side contact 505 disposed in the socket
insertion hole 506 to form a space between the first socket-side contact 504 and the guide 503.
Therefore, the contact area between the contacts of the plug and the socket is large, and even if a
large current flows, problems such as burnout do not occur, and even if a metal conductor such
01-05-2019
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as a metal ballpoint pen is inserted, the current flows in the metal conductor In the case of the
socket 100 described above, various functions, functions and effects are also provided such that
even if the plug is turned upside down and the plug is inserted upside down, it is reliably
energized. Is the same as that.
[0037]
Here, the amplifier side socket 500 in FIGS. 14 to 16 is normally connected to the amplifier
circuit only when the socket side contacts 504 and 505 are separated from the amplifier circuit
of the amplifier and the amplifier side plug is inserted. It has become more secure and has
improved safety.
[0038]
For this reason, as shown in FIG. 15, the pressing ring 512 of each amplifier side socket 500
extends in the horizontal direction, with a part of the side wall extended and protruding from the
opening formed in the side wall of the second socket side contact 505 It is configured as a
moving actuator 521.
[0039]
A pair of control contacts 522, 524 are disposed parallel to the side walls of the presser ring 512
and supported by the socket body 502.
The upper edge of the control contact 522 is bent in the horizontal direction, and a tongue piece
523 is integrally formed.
The control contact 524 is provided with a resilient tongue 525 which is partly notched and
which bends around the front edge. The elastic tongue piece 525 is always in contact with the
tongue piece 523 and the actuator 521 is always in contact with the elastic tongue piece 525.
[0040]
When this amplifier-side socket 500 is attached to the amplifier, for example, assuming that the
first socket-side contact 504 and the second socket-side contact 505 are connected to the
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amplifier circuit via a relay, the control contact 522, 524 are connected to the control circuit of
the relay. When the control contact of the relay contacts the control contact 522 and the control
contact 524, it opens the relay contact and disconnects the first socket side contact 504 and the
second socket side contact 505 from the amplification circuit. It shall be.
[0041]
Now, as shown in FIG. 16, when the amplifier-side plug 300 of the speaker cable is inserted into
the amplifier-side socket 500, the first socket-side contact 504 of the socket 500 and the first
plug-side contact 308 of the plug are connected. Contact is made, and the second socket side
contact 505 of the socket 500 and the second plug side contact 313 of the plug are in contact. At
the same time, the actuator 521 is pushed by the plug-in portion 302 of the socket, separating
the elastic tongue 525 from the tongue 523 of the control contact 522. When disconnected, the
control circuit can close the tongues of the relay and connect the first socket side contact 504
and the second socket side contact 505 to the amplifier circuit.
[0042]
In the switch-equipped amplifier-side socket as described above, the control contact may be
always open and may be closed when the amplifier-side plug is inserted. FIG. 17 shows an
example of such an amplifier side socket.
[0043]
The connector of FIG. 17 is also for a two-channel stereo amplifier, and has two amplifier side
sockets 600. Each amplifier side socket 600 is similar to the amplifier side socket 100 shown in
FIG. 1 and FIG. 3 to FIG. 6, the socket main body 602, three guides 603, the first socket side
contact 604 and the second socket side contact It has 605.
[0044]
Also in the example of FIG. 17, a part of the side wall of the presser ring 612 is separated and
configured as an actuator 621 that moves in the horizontal direction. A control contact 624 is
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disposed parallel to the side wall of the retaining ring 512 and is supported by the socket body
602. The control contact 624 is substantially U-shaped in plan view, and is partially separated
and is composed of a fixed piece 624 b and an elastic piece 624 a spaced apart therefrom.
[0045]
Also in the case of this amplifier-side socket 600, when attached to the amplifier as an example,
the first socket-side contact 504 and the second socket-side contact 505 are connected to the
amplifier circuit via a relay, and a piece of the control contact 622 It is assumed that 624a and
624b are connected to the control circuit of the relay. The control circuit of the relay opens the
relay contact and disconnects the first socket side contact 604 and the second socket side
contact 605 from the amplification circuit because the control contact 622 is disconnected.
[0046]
Here, when the amplifier side plug 300 of the speaker cable is inserted into the socket 600 of
FIG. 17, the first socket side contact 604 of the socket 600 and the first plug side contact 308 of
the plug make contact, The second socket side contact 605 and the second plug side contact 313
of the plug are in contact with each other. At the same time, the actuator 621 of the pressing ring
612 is pushed by the insertion portion 302 of the socket to bring the elastic piece 624 a into
contact with the fixing piece 624 b. This contact causes the control circuit of the relay to close
the relay contacts and connect the first socket side contact 604 and the second socket side
contact 605 to the amplifier circuit.
[0047]
Although the embodiment of the connector for a speaker cable of the present invention described
above has been described as a connector for a speaker cable for connecting a speaker cable to an
amplifier and a speaker, the connector for a speaker cable of the present invention has high
insulation performance and Since the current can flow and the plug and socket insertion is not
directional, the connector can be used as a cable connector in other electric devices other than
the audio device.
[0048]
As described above, the present invention adopts the contact mode for ensuring the conduction
of a large current, the form of the contact capable of reliably preventing the contact of the test
01-05-2019
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finger from the outside, and the arrangement mode thereof, so a high output audio can be
obtained. Not only a connector for a speaker cable in a video system or the like but also a
connector for a power supply cable of a general electric device, it is extremely useful in industry.
[0049]
The perspective view which shows the amplifier side socket provided in amplifier, and the
amplifier side plug of a speaker cable in an example of implementation of the connector for
speaker cables of this invention.
The perspective view of the speaker side socket and the speaker side plug of a speaker cable.
The expansion perspective view of the amplifier side socket. Sectional drawing of the amplifier
side socket which follows the AA of FIG. The perspective view which shows the relationship
between the guide in an amplifier side socket, and a contact. The perspective view of the contact
in the amplifier side socket of FIG. The expansion perspective view of the amplifier side (speaker
side) plug. The perspective view which looked at the plug of FIG. 7 from the other side. FIG. 8 is a
cross-sectional view of the plug of FIG. 7 taken along the line B-B. The flat cross section which
shows the connection state which fitted the amplifier side (or speaker side) plug in the amplifier
side (or speaker side) socket. FIG. 11 is a vertical cross-sectional view showing the relationship
between the socket side contact and the plug side contact along the line HH in FIG. 10; The
perspective view which shows an example of the speaker side socket. FIG. 13 is a cross-sectional
view of the speaker side socket along the line C-C in FIG. 12. The perspective view which shows
the other Example of the amplifier side socket in the connector for this invention speaker cables.
FIG. 15 is a cross-sectional view of an amplifier-side socket along the line DD in FIG. FIG. 15 is a
cross-sectional plan view showing the connection state between the amplifier-side socket and the
amplifier-side plug shown in FIG. 14; FIG. 8 is a cross-sectional plan view showing a connection
state between an amplifier-side socket and an amplifier-side plug according to another
embodiment of the speaker cable connector of the present invention.
Explanation of sign
[0050]
Reference Signs List 10 amplifier 20 speaker enclosure 30 speaker cable 31 positive side cable
32 core wire 33 negative side cable 34 core wire 100 amplifier side socket 101 casing 102
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socket main body 103 guide 103 a small width groove 104 first socket side contact 105 second
socket side contact 106 Plug insertion port 107 Hanging tongue piece 108 Horizontal tongue
piece 109 Notched part 109a Tapered surface 110 Square cylinder 110a Stopper 111 Tongue
piece 112 Presser ring 200 Speaker side socket 202 Socket body 203 Guide 203a Small width
groove 204 First socket side contact 205 Second socket side contact 206 Plug insertion hole 210
Square tube 300 Amp side plug 301 Plug body 302 Insertion part (branch part) 303 Cable cable
insertion part (branch part) 304 core fixing part 305 core fixing part 306 opening 307 rib 308
first plug side contact 309 square cylindrical body 309a slit 310 tongue piece 311 cable presser
312 presser screw 313 second plug side contact 314 external rectangular cylindrical body 314a
opening 315 tongue piece 316 cable presser 317 presser screw 400 speaker side plug 500
amplifier side socket 502 socket main body 503 guide 503 a small width groove 504 first socket
side contact 505 second socket side contact 506 socket insertion Bore 512 presser ring 521
actuator 522 control contact 523 tongue piece 524 control contact 600 amplifier side socket
602 socket body 603 guide 604 first socket side contact 6 5 second socket-side contact 612
pressing ring 621 actuator 622 controls contacts 624 controls contacts 624a elastic piece 624b
fixed piece
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