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JP2005064796

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DESCRIPTION JP2005064796
A speaker can be easily and quickly connected to a printed circuit board without using a lead
wire with a connector or changing the structure of the speaker itself, and connection errors can
be prevented. The speaker mounting structure and the array speaker apparatus are provided. A
speaker (4) is attached to a front panel (3), and one end of a compression coil spring (10) having
conductivity and elasticity is connected to each signal input terminal (7, 7) of the speaker (4)
through a faston terminal (11). Then, the other end of each compression coil spring 10 is presscontacted to the land 13 provided on the printed circuit board 12 to be electrically connected.
[Selected figure] Figure 2
Speaker mounting structure and array speaker device
[0001]
The present invention relates to a speaker attachment structure and an array speaker device, and
more particularly to an improvement in a connection structure between a speaker and a printed
circuit board.
[0002]
As a method of connecting a speaker to a printed circuit board, (1) A method of inserting and
fixing a pair of signal input terminals provided in a projecting manner in a speaker in a hole
provided on the printed circuit board and electrically connecting them And (2) a method of
connecting lead wires provided in a speaker to a connector of a printed circuit board through a
connector (for example, see Patent Documents 1 and 2), and (3) leaf spring-like terminals
provided in a speaker Three types of methods (for example, refer to patent documents 3 and 4)
of pressing on lands (connection parts) of a printed circuit board are common.
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[0003]
Japanese Utility Model Application Publication No. 3-3898 (FIGS. 1 and 2) Japanese Utility Model
Application Publication No. 3-3783 (FIGS. 3 and 4) Japanese Patent Application Publication No.
2002-305578 (FIG. 11) Japanese Patent Application Publication No. 11-136795 (Figure 1)
[0004]
As another connection method, (4) one in which one connector provided on the speaker is
connected to the other connector provided on the printed circuit board is also known (see, for
example, FIG. 1 of Patent Document 3). .
[0005]
However, all of the conventional connection methods described above have problems as
described below.
The method of inserting a pair of signal input terminals protruding from the speaker of (1) into
the holes provided in the printed circuit board and electrically connecting them is as follows:
when inserting thin pin-like terminals into the holes, the distance between the pair of terminals
and the pair If the spacing between the holes does not match correctly, it can not be inserted, and
there is a problem that high dimensional accuracy is required for the spacing between the
terminals and the holes.
The method of connecting the lead wire provided in the speaker of (2) to the printed circuit
board through the connector has the advantage that the connector on the printed circuit board
side can be provided at a location away from the mounting portion of the speaker. There is a
problem that the assembly operation is complicated because a lead wire attached is required and
a connection process of connectors is required.
In particular, in the case of an array speaker apparatus in which a plurality of speakers are
arranged in an array, check the connector on the printed circuit board side for each speaker and
connect the connector on the lead wire side so that a connection error between the connectors
does not occur. It takes time to connect.
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Furthermore, when the lead wire is long, it is necessary to pay attention to the lead wire routing
so as not to be caught by other electrical components. (3) The method of pressing the leaf spring
terminal provided on the speaker to the land of the printed circuit board requires that the
speaker be structured so that the leaf spring terminal can be fixed and that the leaf spring
terminal dedicated for the speaker be manufactured. Manufacturing costs are high. In addition,
since it is necessary to provide a fixing means for fixing the speaker to the printed circuit board,
manufacturing of the printed circuit board itself is troublesome and it becomes a special board.
In addition, when a plurality of fixing means are provided on the printed circuit board, a space
for the same is required, and the mounting efficiency of the electronic component is reduced. The
method of connecting one connector provided on the speaker of (4) to the other connector
provided on the printed circuit board has a problem that the entire speaker becomes large
because the connector on the speaker side protrudes to the side of the speaker The Also, by
connecting the speaker on the printed board side to the speaker on the speaker side, the speaker
is supported by being floated from the printed board, thus providing a cantilever support
structure, and the speaker is easily shaken due to vibration, shock, etc. There was also a problem.
[0006]
The present invention has been made to solve the above-described conventional problems, and
the object of the present invention is to eliminate the need for a lead wire with a connector and
to change the structure of the speaker itself. It is an object of the present invention to provide a
speaker mounting structure and an array speaker apparatus capable of easily and short-time
connection to a printed circuit board and preventing connection errors.
[0007]
In order to achieve the above object, in the speaker mounting structure according to the first
invention, a speaker is mounted on a front panel, and one end of a compression coil spring
having conductivity and springiness is connected to a signal input terminal of the speaker, The
other end of the compression coil spring is in pressure contact with a land provided on the
printed circuit board.
[0008]
An array speaker apparatus according to a second aspect of the present invention is an array
speaker apparatus in which a plurality of speakers are mounted in an array on a front panel, one
end of a compression coil spring having conductivity and springiness at the signal input terminal
of each speaker. It connects and the other end of this compression coiled spring is presscontacted to the land provided in the printed circuit board.
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[0009]
According to the first and second aspects of the invention, the speaker can be electrically
connected to the printed circuit board only by pressing the compression coil spring to the land of
the printed circuit board without the need for a lead wire or a connector.
The connection between the compression coil spring and the signal input terminal may be made
by using a commercially available faston terminal or by connection with solder, so that it is not
necessary to change the structure of the speaker itself.
Since the lands of the printed circuit board are provided at the mounting portion of the speaker
so as to correspond to the compression coil spring, if the speaker and the printed circuit board
are positioned, connection errors can not occur and assembling can be performed in a short time.
It is advantageous in the case of an array loudspeaker arrangement with a loudspeaker.
In addition, since the compression coiled spring contacts the land with a certain length when
pressed against the land, the connection reliability is also excellent.
[0010]
Hereinafter, the present invention will be described in detail based on the embodiments shown in
the drawings. FIG. 1 is an external perspective view showing an embodiment of an array speaker
device according to the present invention, and FIG. 2 is a cross-sectional view showing a
mounting structure of the speaker. In these figures, the array speaker apparatus generally
indicated by reference numeral 1 includes a plurality of speakers 4 attached in an array at a
predetermined distance to the front panel 3 of the thin box vertical type speaker cabinet 2. It is a
speaker apparatus which reproduces a sound by controlling the speakers 4 independently of one
another. For this reason, the array speaker device 1 incorporates a plurality of A / D converters,
D / A converters, a delay circuit, an amplifier, etc. (not shown) corresponding to the respective
speakers 4 and has high directivity. I have built a speaker system. As such a highly directional
speaker system, for example, those proposed by Patent Documents 5, 6, and 7 are known.
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[0011]
International Publication WO 01/23104 Pamphlet Japanese Patent Application Laid-Open No.
07-203581 Japanese Patent Application Laid-Open No. 2001-069591
[0012]
Here, although FIG. 1 shows an example in which fourteen speakers 4 are provided on the back
side of the front panel 3, several hundreds (200 to 300) are actually attached.
Each of the speakers 4 is formed of the same full-range speaker, and has a pair of signal input
terminals 7 and 7 protruding from the back of the yoke 6 as shown in FIG. Is fixed to the back
surface of the front panel 3 by a plurality of set screws 9. Further, one end 10 a of the
compression coil spring 10 is connected to each signal input terminal 7 through the faston
terminal 11, and the free end 10 b (the other end) of the compression coil spring 10 is inserted
into the speaker cabinet 2. The speaker 4 is electrically connected to the electric circuit of the
printed board 12 by pressing the land 13 of the printed board 12 disposed parallel to the front
panel 3. The material of the compression coil spring 10 may be a metal material having
conductivity and springiness. The lands 13 of the printed circuit board 12 are formed to
correspond to the respective compression coil springs 10 with respect to each of the speakers 4.
Reference numeral 14 denotes a grille net covering the surface of the front panel 3, and
reference numeral 15 denotes a sound output hole.
[0013]
When attaching the speaker 4 to the printed circuit board 12, the speaker 4 is fixed in advance
to the back of the front panel 3 by the set screw 9 and the compression coil spring 10 is attached
to each signal input terminal 7 via the faston terminal 11. Next, the front panel 3 to which the
speaker 4 is attached is held horizontally with the surface side up with the compression coil
spring 10 directed vertically downward, and the land 13 is raised below the front panel 3 with
the printed circuit board 12. And the lands 13 correspond to the compression coil springs 10,
respectively. Then, the front panel 3 is lowered to press the free end 10b of the compression coil
spring 10 into contact with the land 13, and the front panel 3 and the printed circuit board 12
are integrally joined by fixing means such as setscrews or 12 is fixed in the speaker cabinet 2
and the front panel 3 is fixed to the front opening of the speaker cabinet 2.
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[0014]
According to such a mounting structure of the speaker 4 to the printed circuit board 12, it is only
necessary to form the lands 13 on the printed circuit board 12 side corresponding to the
respective compression coil springs 10. Therefore, the connector is fixed to the printed circuit
board 12 Since it is not necessary to provide a fixing means for fixing the printed circuit board
12, the structure of the printed circuit board 12 is simple, easy and inexpensive to manufacture,
and the compression coil spring 10 and the land 13 correspond to each other. If the printed
circuit board 12 is positioned, the compression coil spring 10 can be reliably pressed against the
land 13 without causing connection errors, and the reliability of terminal connection can be
improved.
[0015]
In addition, since it is not necessary to use a lead wire with a connector, it is not necessary to pay
attention to the lead wire routing, and assembly can be performed in a short time.
Moreover, since the speaker 4 can use the commercially available thing provided with the pinshaped signal input terminal 7, it is not necessary to give a special process etc. and the
compression coiled spring 10 is easily attached via the faston terminal 11. be able to. However, it
is also possible to connect by soldering instead of the faston terminal 11. In addition, since the
compression coil spring 10 is compressed and the free end 10b linearly contacts the land 13
with a certain length, it is not necessary to form the land 13 with high positional accuracy.
Furthermore, since the compression coil spring 10 can use a commercially available spring, it is
cheaper than a leaf spring-like terminal.
[0016]
FIG. 3 is a cross-sectional view showing another embodiment of the present invention. In this
embodiment, the first and second printed circuit boards 12A and 12B are disposed parallel to the
front panel 3 behind the speaker 4, and the second printed circuit board 12B is formed of the
first printed circuit board 12A. The relay board 12B and the first printed board 12A are
electrically connected by two pairs of connectors 15 and 15 in a pair, and provided on the
speakers 4 in the lands 13 and 13 formed on the relay board 12B. The free ends of the pair of
compression coil springs 10, 10 are pressed against each other. However, the connector 15 does
not have to correspond to one speaker 4, and the signal lines of the plurality of speakers 4 can
be concentrated on the connector 15 by the wiring of the relay substrate 12 B. When the relay
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substrate 12B is used, it is not necessary to make the first printed circuit board 12A the same
size as the relay substrate 12B, and it may have an area matched to the size of the electric circuit.
The second printed circuit board 12B corresponds to the printed circuit board 12 in the abovedescribed embodiment. The other configuration is the same as that of the above-described
embodiment.
[0017]
In such a structure, when the electric circuit of the first printed circuit board 12A is to be
corrected, the first printed circuit board 12A need only be detached from the relay board 12B,
and the speaker 4 itself does not have to be detached. It is convenient for removing the substrate
12A.
[0018]
FIG. 4 is a cross-sectional view showing still another embodiment of the present invention.
In this embodiment, a plurality of speakers 4 are separately stored in a small speaker box 20, and
the speakers 4 are stored in one large speaker cabinet 2. A pair of compression coil springs 10,
10 provided in each of the speakers 4 project to the rear of the speaker box 20, and are in
pressure contact with the lands 13 of the printed circuit board 12. The printed circuit board 12
is fixed to the inner surface of the speaker cabinet 2 by a plurality of set screws 21.
[0019]
In such a structure, since the independence of the sound is secured by storing the speakers 4 in
the speaker box 20, the acoustic characteristics of the array speaker device can be further
improved.
[0020]
Although all of the above-described embodiments have been described as the speaker attachment
structure in the array speaker device, the present invention is not limited to this, and a general
speaker device such as a tallboy type or book shelf type may be used. It can apply also to the
attachment structure of the speaker in a speaker apparatus.
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The compression coil spring 10 may be fixed not only by pressure contact with the land 13 but
also by soldering if necessary. The printed circuit board 12 may be attached not only to the
speaker cabinet 2 but also to the speaker box 20. Further, in FIG. 4, since a plurality of
independent speaker boxes 20 are arranged adjacent to each other, two left and right side plates
are provided for each speaker box 20, but the partitions of the speaker boxes 20 adjacent to each
other are separated. May be integrated into one side plate, or the back plates of each speaker box
may be integrated into one back plate. Furthermore, in the embodiment described above, an
example is shown in which all the speakers 4 are assembled to one printed circuit board 12 and
the relay board 12B, but the present invention is not limited to this. In the case of a long speaker
device, the speaker 4 may be assembled to a printed circuit board (relay board) divided into two
or three in the lateral direction.
[0021]
It is an appearance perspective view showing one embodiment of an array speaker device
concerning the present invention. It is sectional drawing which shows the attachment structure
of a speaker. It is sectional drawing which shows other embodiment of this invention. It is
sectional drawing which shows other embodiment of this invention.
Explanation of sign
[0022]
DESCRIPTION OF SYMBOLS 1 ... Array speaker apparatus, 2 ... Speaker cabinet, 3 ... Front panel,
4 ... Speaker, 7 ... Signal input terminal, 10 ... Compression coil spring, 11 ... Fasten terminal, 12 ...
Printed circuit board, 13 ... Land, 20 ... Speaker box .
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