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JP2002034094

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DESCRIPTION JP2002034094
[0001]
TECHNICAL FIELD The present invention relates to a signal of a speaker unit for supplying an
output signal of a network circuit that generates a signal of a predetermined frequency band and
/ or a signal of a predetermined attenuation amount to a signal input terminal of the speaker
unit. The present invention relates to a "connecting device" and "a speaker unit attenuation
amount display device" for displaying the attenuation amount on a speaker unit to which an
output of a network circuit unit capable of selectively changing an audio output signal to a
plurality of attenuation amounts is applied.
[0002]
2. Description of the Related Art In general, when a speaker apparatus is configured by
combining a plurality of speaker units having different reproduced voice bands, the audio output
signal is divided into bands using a network circuit and then connected to the speaker unit. There
is. When the speaker unit is a tweeter, the terminals 2a and 3a of the lead wires 2 and 3
connected to the voice coil of the tweeter unit 1 as shown in FIG. ) Are connected to the terminals
5a and 6a of the lead wires 5 and 6 respectively.
[0003]
The terminals 7a and 8a of the lead wires 7 and 8 connected to the input end (IN) of the network
circuit 4 are connected to a speaker output end such as a power amplifier (not shown). Are
connected to terminals 9a and 10a.
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1
[0004]
There is also an example in which the attenuation amount of the output of the tweeter-dedicated
network circuit 4 can be selected to, for example, two values of "-0 dB" and "-3 dB" according to
the listening conditions. Is shown in FIG.
The input terminal (IN +. Input terminals 11a and 11b connected to each of IN-) are coupled to
speaker output terminals such as a power amplifier (not shown) and connected to respective
output terminals (COM, -0 dB, -3 dB) of the network circuit 11 The common output terminal 11c,
the first output terminal 11d, and the second output terminal 11e are provided.
[0005]
Therefore, when the attenuation amount is desired to be -0 dB, the common output terminal 11c
is connected to the terminal 3a (see FIG. 12) and the first output terminal 11d is connected to the
terminal 2a (see FIG. 12). As a result, a noise of -0 dB can be obtained. On the other hand, when
the attenuation is desired to be -3 dB, the common output terminal 11c is connected to the
terminal 3a (see FIG. 12) and the second output terminal 11e is connected to the terminal 2a (see
FIG. 12) to attenuate A noise of -3 dB can be obtained.
[0006]
Further, when the speaker unit is a tweeter, as shown in FIG. 14, the lead wire 42 connected to
the voice coil of the tweeter unit 41 is connected to the output end of the tweeter-dedicated
network circuit unit 43. A speaker output end such as a power amplifier (not shown) is
connected to an input end of the circuit unit 43.
[0007]
A slide switch for switching the circuit of the tweeter network circuit unit 43 so that the
attenuation of its output can be selected to two, “−0 dB” and “−3 dB” according to the
listening conditions. 43a is provided, and a first display 43b in which the character display of "-0
dB" is made at the end of the operation range of the slide button of this slide switch 43a, and a
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second display 43 c in which the character display of "-3 dB" is made It is provided.
Such a speaker unit 41 is provided on the front plate of the speaker box constituting the speaker
device, while the network circuit unit 43 is attached to the back of the speaker box.
[0008]
Unlike the means for adjusting the level of the tweeter audio signal in a plurality of stages using
the slide switch 43a as in this network circuit unit 43, an example using a network circuit unit 45
as shown in FIG. is there. The input terminal (IN +. A speaker output end such as a power
amplifier (not shown) is connected to each input terminal 46 of IN−), and an output end (WF +.
A woofer unit is connected to each woofer output terminal 47 of WF−). The network circuit unit
45 is also provided with a common terminal 48a, a first terminal 48b, and a second terminal 48c
connected to the tweeter output terminals (COM, -0 dB, -3 dB).
[0009]
Therefore, when the attenuation of the tweeter sound emission is desired to be -0 dB, theterminal 42a connected to the lead wire 42 of the speaker unit 41 is connected to the common
terminal 48a of the network circuit unit 45 and the lead By connecting the + terminal 42b
connected to the wire 42 to the second terminal 48c, sound emission with an attenuation of -0
dB is obtained.
[0010]
On the other hand, when an attenuation of -3 dB is desired, the-terminal 42a connected to the
lead wire 42 of the speaker unit 41 is connected to the common terminal 48a of the network
circuit unit 45 and connected to the lead wire 42. By connecting the positive terminal 42b to the
first terminal 48b, a noise of -3 dB can be obtained.
[0011]
[0011] The conventional "signal connection device of the speaker unit" can be directly connected
to the speaker unit at the speaker output end of the power amplifier etc. without passing through
the network circuit. There is a risk that the speaker unit may be damaged due to application of a
large input more than necessary, or a signal other than the desired voice band may be applied,
and in particular, a large input may be applied to the tweeter that is weak due to excessive input.
Sex is high.
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[0012]
Also, even if the signal does not lead to breakage, unnecessary signals, for example, up to the low
frequency range necessary for the woofer, may be applied to the unnecessary high-pitched
speaker, for example, to cause distortion or turbidity in the reproduced sound.
[0013]
Therefore, a first object of the present invention is that an excessive input is applied to a
dedicated tweeter unit in a predetermined voice band, or an unnecessary voice band signal is
applied to impair the sound emission quality. And providing a signal connection device for the
speaker unit.
[0014]
On the other hand, the attenuation amount display in the case of attenuating the audio signal
level supplied to the speaker unit dedicated to the specific band in the conventional attenuation
amount display device of the speaker unit over a plurality of stages is provided with the network
circuit unit. It is displayed small corresponding to the changeover switch on the unit, or small
displayed on the selectively connected terminal section, and any display thereof is disposed at a
position not normally seen such as the back of the speaker box Therefore, when the user tries to
confirm the attenuation amount currently set, the user must move from the listening position to
the position of the speaker device and confirm the display on the back, which is extremely
inconvenient. there were.
[0015]
Therefore, a second object of the present invention is to provide a speaker which can easily
recognize the setting of the attenuation amount in the speaker unit dedicated to a predetermined
sound band without moving from the listening position. An object of the present invention is to
provide a unit attenuation amount display device.
[0016]
SUMMARY OF THE INVENTION In order to achieve the first object of the present invention, the
signal connection device for a speaker unit according to the present invention adopts the
characteristic configuration as described below. ing.
[0017]
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(1) A signal connection device of a speaker unit for supplying an output signal of a network
circuit for generating a signal of a predetermined frequency band and / or a signal of a
predetermined attenuation amount to a signal input terminal of the speaker unit. A built-in
network board is built in, and a fixed contact piece connected to a plurality of output ends of the
network board is connected to the first housing exposed and a signal input end of the built-in
speaker section; And the 2nd case where the movable contact piece which can be selectively
contacted to the above-mentioned fixed contact piece part was arranged, the 1st case and the
2nd case can move a predetermined rotation angle. And the movable contact piece is selectively
brought into contact with the plurality of fixed contact pieces when the second case is rotated
with respect to the first case by the support means and the support means. And connection
means Signal connecting device of the speaker unit provided.
[0018]
(2) The fixed contact piece of (1) is a speaker comprising a plurality of projecting terminals in
which the common terminal, the first output terminal and the second output terminal of the
network substrate are disposed on the same circle. Unit's signal connection device.
[0019]
(3) A signal connection device of a speaker unit in which the projecting terminal of (2) is
structured to have a spring property in the direction of the movable contact piece.
[0020]
(4) The fixed contact piece of (1) is a speaker comprising a plurality of flat terminals in which the
common terminal, the first output terminal and the second output terminal of the network
substrate are disposed on the same circle. Unit's signal connection device.
[0021]
(5) The flat terminal of (4) is formed by forming a pattern on the network substrate, and the
movable contact piece has a spring property in the direction of the flat terminal. Signal
connection device.
[0022]
(6) A signal connection device of a speaker unit, wherein the second output terminal of any one
of (2) to (5) is constituted by a plurality corresponding to a plurality of output ends of the
network substrate.
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[0023]
Further, in order to achieve the second object of the present invention, the "attenuation amount
display device for speaker unit" according to the present invention adopts the following
characteristic configuration.
[0024]
(7) In a speaker unit to which an output of a network circuit portion capable of selectively
changing an audio output signal to a plurality of attenuation amounts is applied, the speaker unit
corresponding to the attenuation amount by the network circuit portion A speaker unit
attenuation amount display device provided with display means for forming a display
representing the attenuation amount in the exposed portion of the speaker unit.
[0025]
(8) The display means of (7) is a holder formed on the exposed surface of the speaker unit, and
an attenuation amount display which can be inserted into and removed from the holder and
which corresponds to the attenuation amount by the network circuit portion. The attenuation
amount display apparatus of the speaker unit comprised with the display board which was made.
[0026]
(9) An attenuation amount display device of a speaker unit, wherein the display plate of (8) is
configured to provide different displays corresponding to the attenuation amount by the network
circuit portion on the front surface and the back surface, respectively.
[0027]
(10) The display means of (7) forms a display element formed on the exposed surface of the
speaker unit, and an attenuation amount display corresponding to the attenuation amount by the
network circuit portion with respect to the display element. The attenuation amount display
apparatus of the speaker unit comprised with the display control part which produces |
generates a signal.
[0028]
(11) The display control unit of (10) is configured to automatically generate a signal for
displaying an attenuation amount corresponding to the attenuation amount following the
selection of the attenuation amount by the network circuit unit. Attenuation amount display
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device for the speaker unit.
[0029]
BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the "signal connection device
for speaker unit" according to the present invention will be described below with reference to
Figs.
Note that this embodiment is an example in which the present invention is applied to a high
sound speaker unit that reproduces high sound areas, and the signal connection device of the
speaker unit as shown in the cross sectional view of FIG. 1 and the perspective view of FIG. The
main part is configured by the first case 12 and the second case 13.
[0030]
The first case 12 incorporates a network substrate 14 on which a network circuit capable of
selecting two attenuation amounts while extracting a high-pitch band is incorporated, and an
electronic circuit component 15 is mounted on the surface on one side thereof. The fixed contact
pieces 17a, 17d are formed on the other side, and the fixed contact pieces connected to the
plurality of output ends of the network circuit are exposed.
[0031]
The second housing 13 combined with the first housing 12 is connected to the signal input end
of the built-in speaker unit, and is movable so as to selectively contact the fixed contact piece. A
contact piece is provided.
Specifically, the speaker unit contained in the second housing 13 has a movable contact piece
supported by the support 18 fixed to the second housing 13, and the movable contact piece is
also shown in FIG. 3. The first movable contact piece 19a and the second movable contact piece
19b are disposed on the same circle of the circle center O at a predetermined rotational angle P
(an angle twice the angles Q and R described later). There is.
[0032]
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The outer magnetic portion 20 is fixed to the support 18, the bottom of the magnet 21 is fixed to
this, the inner magnetic portion 22 is fixed on the upper portion, and the magnet formed by the
outer magnetic portion 20 and the inner magnetic portion 22 The voice coil 24 is disposed in the
gap, the diaphragm 23 is connected and fixed thereto, and the open end is fixed to the inner wall
of the second housing 13 through the edge portion.
[0033]
Further, one end of the voice coil 24 is connected to the first movable contact piece 19a via the
tinsel wire 25, and the other end of the voice coil 24 is provided via the tinsel wire (not shown in
the drawing). The cover 26 is disposed in front of the diaphragm 23 and connected to the two
movable contact pieces 19 b (see FIG. 3).
[0034]
As shown in FIG. 4, each of the fixed contact pieces 17a,... 17d forming the above-mentioned
fixed contact piece portion is a first fixed contact, separated by a predetermined rotation angle Q
on the same circle of the circle center O. The piece 17a and the second fixed contact piece 17b
are disposed, and the third fixed contact piece 17c and the fourth fixed contact piece 17d are
disposed at a predetermined rotation angle R.
[0035]
As shown in FIG. 5, in the network circuit by the network board 14, the input end b is commonly
connected to the common end e, and this is connected to the third fixed contact piece 17c and
the fourth fixed contact piece 17d shown in FIG. An output end c having a capacitor C1 at its
input end a is used as a second fixed contact piece 17b, and an output end d with a capacitor C1
and a resistor R1 is used as a first fixed contact piece 17a.
[0036]
Now, the first housing 12 and the second housing 13 are provided with supporting means for
supporting the predetermined rotation angles (Q, R) so as to be able to move, and the first
housing 12 is When the second housing 13 is turned, when the turning position is at both ends,
the first index 12a of "0 dB" representing the attenuation amount and the second index 12b of "3 dB" An index 13 a corresponding to the peripheral surface of the first housing 12 is formed on
the peripheral surface of the second housing 13.
[0037]
When the second casing 13 is rotated with respect to the first casing 12 by the support means,
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connection means capable of bringing the "movable contact piece" into contact with the "plurality
of fixed contact pieces" is provided. Although the coupling state of the first housing 12 and the
second housing 13 is not shown, a retaining mechanism is provided and a click stop mechanism
for fixing at two angular positions is provided. .
[0038]
Therefore, when the second housing 13 is rotated clockwise with respect to the first housing 12,
the first movable contact piece 19a shown in FIG. 3 contacts the second fixed contact piece 17b
shown in FIG. At the same time, the second movable contact piece 19 b of the second housing 13
contacts the fourth fixed contact piece 17 d of the first housing 12.
At the same time, as shown in FIG. 2, the index 13 a of the second housing 13 points to the first
index 12 a of the first housing 12, and it can be clearly recognized that the attenuation amount is
“0 dB”.
[0039]
On the other hand, when the second housing 13 is rotated counterclockwise with respect to the
first housing 12, the first movable contact piece 19a shown in FIG. 3 contacts the first fixed
contact piece 17a shown in FIG. At the same time, the second movable contact piece 19 b of the
second housing 13 contacts the first fixed contact piece 17 c of the first housing 12.
At the same time, the indicator 13a of the second housing 13 points to the second indicator 12b
of the first housing 12, and it can be clearly recognized that the attenuation amount is "-3 dB".
[0040]
Although each of the first fixed contact piece 17a to the fourth fixed contact piece 17d described
so far is constituted by a projecting type terminal, instead of this, the first case shown in FIG. 6 is
used. As in 27, the fixed contact piece portion is formed of a printed wiring pattern by a plurality
of planar terminals in which the common terminal, the first output terminal, and the second
output terminal of the network circuit are disposed on the same circle, The movable contact
piece (the first movable contact piece 19a or the like) disposed opposite to the terminal may be
configured to contact with elasticity.
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[0041]
More specifically, the first conductor portion 27a and the second conductor portion 27b are
pattern-formed on the same circle of the circle center O of the first housing 27 at a
predetermined rotational angle S, and the circle center O is identical. A common conductor
portion 27c including a predetermined rotation angle T is disposed on a circle, and the first
movable contact piece 19a (see FIG. 3) is firstly rotated by rotating the second housing 27
counterclockwise. At the same time, the second movable contact piece 19b (see FIG. 3) is brought
into contact with the common conductor portion 27c, and the attenuation amount is set to "0
dB".
[0042]
On the other hand, the first movable contact piece 19a (see FIG. 3) is brought into contact with
the second conductor portion 27b by rotating the second casing 27 clockwise, and at the same
time, the second movable contact piece 19b (see FIG. 3) is in contact with the common conductor
portion 27c, and is set to an attenuation amount of "-3 dB".
[0043]
Next, an embodiment of an attenuation amount display device for a speaker unit according to the
present invention will be described with reference to FIGS. 7 to 11. FIG.
This embodiment is an example in which the present invention is applied to a high-pitched
speaker unit that reproduces high-pitched sound, and as shown in FIG. 7, the appearance of the
speaker unit 9 is formed in a substantially short cylindrical shape. Is provided, and the display
10a of the character "-" and the display 10b of the character "dB" are formed in each of the both
sides.
[0044]
The holder 10 is formed in a U-shape protruding from the outer wall of the speaker unit 9 as
shown in FIG. 8 of the enlarged cross section, and a groove 10c is formed in the inside and has a
spring property in its inside The pressing portion 10d is formed so as to protrude, and the
display plate 11 can be inserted and removed freely in the gap, and the rattling of the display
plate 11 is suppressed by the biasing force of the pressing portion 10d.
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[0045]
In the display plate 11, as shown in FIG. 9, a character "0" representing attenuation is displayed
on the surface 11a of the display 11, and a character "3" representing attenuation is displayed on
the back 11b. There is.
Therefore, the display unit for forming a display representing the attenuation amount on the
speaker unit 9 in correspondence with the attenuation amount by the network circuit unit can be
inserted into and removed from the holder 10 and the holder, and the network circuit unit The
display plate 11 is configured to display the attenuation amount corresponding to the
attenuation amount due to
[0046]
Therefore, when the attenuation by the network circuit portion is "0", the display plate 11 is
inserted into the groove 10c of the holder 10 in the direction to expose the surface 11a of the
display plate 11, and the attenuation is "3". If the display plate 11 is turned over and the display
plate 11 is inserted into the groove 10c of the holder 10 in the direction to expose the back
surface 10b, the user can easily recognize the number corresponding to the actual attenuation
from the listening position can do.
[0047]
On the other hand, as shown in FIG. 10, such a display means forms the display element 32a at a
portion exposed on the peripheral surface of the speaker unit 32, and the display circuit 32a is
formed by the network circuit unit 33. An output (GND, 0 dB, -3 dB) of the display control unit
for generating a signal indicating attenuation corresponding to the attenuation is connected to a
terminal of a desired attenuation via the attenuation display control line 36.
[0048]
Further, the input terminal (IN +.
Each of IN-) is connected to a speaker output end such as a power amplifier (not shown), and
each of tweeter output ends (COM, -3 dB, -0 dB) of the network circuit section 33 is connected
09-05-2019
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via an audio signal line 35 Connect to the terminal of the desired attenuation and supply the
power input (B +.
A circuit is formed by connecting the power supply of the battery 34 to each of B-) through the
power supply line 37.
[0049]
Therefore, "0" and "3" of the attenuation amount correspond to the current setting, that is,
according to the connection mode of the audio signal line 35 and the attenuation display control
line 36, numbers are displayed on the display element 32a. As it is displayed, this display can be
easily recognized by the user from the listening position.
[0050]
Incidentally, instead of the display means described so far, as shown in FIG. 11, the speaker unit
is divided into a fixed housing 38 and a movable housing 39, and the upper peripheral edge of
the fixed housing 38 is formed. The fixed housing 38 is configured such that rotation at a
predetermined angle can be freely performed and the removal is prevented by the formed
engaging portion 38a and the engaging portion 39a formed on the lower peripheral portion of
the movable housing 39. Forms the display 38b of the character "0 dB", the display 38c of the
character "-3 dB" and the display 38 d of the character "-6 dB" on the outer surface of the
movable housing 39 It may be configured as follows.
[0051]
Therefore, when the movable housing 39 is rotated with respect to the fixed housing 38, the
display 18b of the character whose index 39b is "0 dB" and the display 18 c of the character "-3
dB" and the display of the character "-6 dB" By pointing to any of 18d, the display can be easily
recognized from the listening position.
[0052]
Although the number of display stages of the attenuation amount is 2 in the above example or 3
in the example shown in FIG. 11, the number of stages may be other than this, and the numerical
value of each stage is also Of course, it is possible to set not only “0, 3” or “0, 3, 6” but also
“0, 2, 4” or “0, 1, 2” or the like.
[0053]
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As apparent from the above description, according to the signal connection device of the speaker
unit of the present invention, the speaker output end of the power amplifier etc. is directly
connected to the speaker unit without passing through the network circuit. Since the speaker
unit can not be damaged, the speaker unit can not be damaged or a signal other than the desired
voice band will be applied.
[0054]
Further, since damage due to excessive input can be prevented and a network circuit is always
inserted, unnecessary signals, for example, up to the low frequency range necessary for the
woofer are not applied to the unnecessary high-tone speaker, for example. There is no distortion
or turbidity in the sound.
[0055]
Therefore, the signal connection device of the speaker unit is provided in which an excessive
input is applied to the dedicated tweeter unit in a predetermined audio band or an unnecessary
audio band signal is applied and the sound emission quality is not impaired. can do.
[0056]
Further, according to the “attenuation amount display device for speaker unit” of the present
invention, in the speaker unit to which the output of the network circuit unit capable of
selectively changing the audio output signal to the attenuation amount of a plurality of stages is
applied, Since the speaker unit is provided with display means for forming a display representing
the attenuation amount in the exposed portion of the speaker unit corresponding to the
attenuation amount by the network circuit unit, the speaker unit dedicated to a predetermined
audio band It is possible to easily recognize which setting of the attenuation amount is without
moving from the listening position.
[0057]
Brief description of the drawings
[0058]
1 is a cross-sectional view showing an embodiment of the "signal connection device of the
speaker unit" of the present invention.
[0059]
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2 is a perspective view of the "signal connection device of the speaker unit" shown in FIG.
[0060]
3 is a schematic view for explaining the arrangement of the movable contact piece shown in FIG.
1 and FIG.
[0061]
4 is a schematic view for explaining the arrangement of the fixed contact shown in FIG. 1 and
FIG.
[0062]
5 is a circuit diagram for explaining a circuit example of the network substrate shown in FIG.
[0063]
6 is a schematic view for explaining a modification of the fixed contact piece shown in FIG.
[0064]
<Figure 7> It is the elevation view which shows one execution form of the attenuation quantity
indicatory device of the speaker unit of this invention.
[0065]
8 is an enlarged cross-sectional view of the holder portion shown in FIG.
[0066]
9 is a schematic view for explaining the mounting of the display plate shown in FIG. 7 and FIG.
[0067]
<Figure 10> It is the outline block diagram which shows the deformation example of the
attenuation indicator of the speaker unit by this invention.
[0068]
11 is a front view showing a partially broken other modified example of the attenuation amount
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display device of the speaker unit according to the present invention.
[0069]
12 is a schematic configuration diagram for explaining the signal connection device of the
conventional speaker unit.
[0070]
13 is a schematic diagram showing a modification of the network circuit shown in FIG.
[0071]
14 is a schematic configuration diagram for explaining the conventional attenuation amount
display device of the speaker unit.
[0072]
15 is a schematic configuration diagram showing another example of the network circuit shown
in FIG.
[0073]
Explanation of sign
[0074]
12 first casing 13 first indicator 12b second indicator 13 second casing 13a indicator 14
network board 15 electronic circuit component 16a first hole 16b second hole 16c third hole
16d fourth hole 17a first fixed contact piece 17b Second fixed contact piece 17c Third fixed
contact piece 17d Fourth fixed contact piece 18 Support body 19a First movable contact piece
19b Second movable contact piece 20 Outer magnetic portion 21 Magnet 22 Inner magnetic
portion 23 Diaphragm 24 Voice coil 25 String Line 26 Cover 27 First casing 27a First conductor
27b Second conductor 27c Common conductor 9, 32 Speaker unit 10 Holder 10a, 10b Display
10c Groove 10d Press 11 Display plate 11a Front 11b Back 32a Display element 33 Network
Circuit part 34 Battery 35 Audio signal line 36 Attenuation display control line 37 Power supply
line 38 Fixed casing 38a, 39a Engagement part 38b 38c, 38c display 39 movable housing 39b
indicators
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