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DESCRIPTION JPH07274286

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DESCRIPTION JPH07274286
[0001]
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a
loudspeaker, and more particularly to a loudspeaker for improving the waterproofness of the
loudspeaker.
[0002]
2. Description of the Related Art FIG. 7 is a cross-sectional view showing a waterproof structure
of a conventional on-vehicle speaker. The magnetic circuit of the speaker unit 71 is an external
magnet type in which an annular magnet 74 is held by the pole piece 72 and the plate 73, and
the frame 75 is attached to the plate 73. Between the pole piece 72 and the plate 73, a bobbin
77 around which the voice coil 76 is wound is disposed so as to be axially displaceably
supported by a damper 78 attached to the frame 75. The base end of the diaphragm 79 is
adhered to the front end of the bobbin 77, and the dust cap 80 is adhered to the front center of
the diaphragm 79. The outer peripheral edge portion of the diaphragm 79 is adhered to the
inner peripheral edge of the edge 82 sandwiched by the arrowhead 81 and the frame 75.
[0003]
The signal line 83 a to the voice coil 76 is drawn along the surface of the diaphragm 79 and
soldered to a ferrule 84 provided on the diaphragm 79. The lead wires 83b and 83c are realized
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by a so-called tinsel wire or the like rich in flexibility. One end of a lead 83 b is connected to the
clamp 84. The other end of the lead wire 83 b is connected to one end of a terminal plate 85
provided on the frame 75. One end of the lead 83c is connected to the other end of the terminal
plate 85, and the other end of the lead 83c is connected to a connector 86 for connecting to a
signal line from an audio device main body such as a radio or a tape player. Then, a speaker
cover 87 for attaching water droplets to the speaker unit 71 is attached to the frame 75.
[0004]
In the above-described prior art, although water droplets from above the speaker unit 71 can be
prevented by the speaker cover 87 inside the door, water can be prevented from flowing into the
speaker unit 71 only from the above inside the door Since the water is blown from all directions,
not downward, the speaker unit 71 can not be sufficiently protected from water, and corrosion of
the speaker unit 71 can not be prevented.
[0005]
[Means for Solving the Problems] The present invention is for solving the problems as described
above, in a speaker in which a signal line for driving a voice coil is drawn out from a speaker
unit. An electrical connection member for forming an input terminal of the speaker unit, wherein
a signal line for driving a voice coil is drawn out along the surface of the diaphragm and disposed
in an arrowhead provided on an edge of the diaphragm. It is connected to the.
[0006]
Further, the arrow is divided into two in the thickness direction, and the conductive plate is
sandwiched between the divided arrows to form the electric connection member.
Further, the arrow is divided into two in the thickness direction, and the connector is sandwiched
between the divided arrows to form the electric connection member.
In addition, in a speaker system in which a signal line for driving a voice coil is drawn out from
the speaker unit, a signal line for driving the voice coil is drawn along the diaphragm surface, and
It passes through the inside of the arrow provided on the edge and is pulled out of the speaker
system.
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[0007]
A signal line for driving a voice coil is drawn out along the surface of the diaphragm, and an
electrical connection member is formed on an edge of the diaphragm to form an input terminal
of a speaker unit provided on an arrow sheet. It is connected to the. Therefore, no signal line or
electrical connection member is disposed on the back surface side of the speaker unit, and a
waterproof effect against water droplets or the like from the back surface side of the speaker unit
can be obtained.
[0008]
Further, the arrow sheet is divided into two in the thickness direction, and the conductive plate
sandwiched between the divided arrow sheets operates as an electrical connection member.
Further, the arrow is divided into two in the thickness direction, and a connector sandwiched
between the divided arrows operates as an electrical connection member. In addition, a signal
line for driving the voice coil is drawn along the surface of the diaphragm, passes through the
inside of the arrow provided on the edge of the diaphragm, and is drawn out of the speaker
system. Therefore, the signal line is not disposed on the back side of the speaker unit, and a
waterproof effect against water droplets and the like from the back side of the speaker unit can
be obtained.
[0009]
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows a cross-sectional
view of a speaker system having a structure using a conductive plate as an electrical connection
member as an embodiment of the present invention. The magnetic circuit of the speaker unit 1 is
an external magnet type in which an annular magnet 4 is held by the pole piece 2 and the plate
3, and the frame 5 is attached to the plate 3. A bobbin 7 around which the voice coil 6 is wound
is disposed between the pole piece 2 and the plate 3 so as to be axially displaceably supported by
a damper 8 attached to the frame 5. The base end of the diaphragm 9 is adhered to the front end
of the bobbin 7, and the dust cap 10 is adhered to the front center of the diaphragm 9. The outer
peripheral edge portion of the diaphragm 9 is adhered to the inner peripheral edge of the edge
16 sandwiched by the arrow sheet 11 formed of the upper arrow sheet 12, the lower arrow sheet
14, and the conductive plate 13 and the frame 5. And, on the outer peripheral edge of the edge
16, annular upper and lower arrows 12 and 14 are provided. The arrowhead 11 (upper
arrowhead 11 and lower arrowhead 13) is mainly compressed paper, etc., and when the speaker
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unit 1 is placed on a workbench, or when it is transported, the edge 16 or the like is pushed and
deformed. It is provided for the purpose of preventing that.
[0010]
The signal line 15a to the voice coil 6 is formed along the surface of the diaphragm 9 and is
formed of a metal having high conductivity, such as copper or silver, sandwiched between the
upper arrow 12 and the lower arrow 14. The projections 13 on the inner side of the plate 13 are
connected by soldering or the like. One end of a lead wire 15 b realized by a so-called tinsel wire
or the like which is rich in flexibility is connected to the projection 19 on the outside of the
conductive plate 13 by soldering. The other end of the lead wire 15b is connected to a connector
17 for connecting to a signal line of an external audio device.
[0011]
FIG. 2 is a perspective view showing the structure of the arrow 11. The arrowhead 11 is formed
of an upper arrowhead 12 and a lower arrowhead 14 formed of compressed paper or the like
and two conductive plates 13a and 13b sandwiched by them, and the conductive plates 13a and
13b are formed on the conductive plates 13a and 13b. The protrusions 18a and 18b to which
the signal line 15a is connected and the protrusions 19a and 19b to which the lead wire 15b is
connected are provided.
[0012]
FIG. 3 is a view showing an example of the shape of the conductive plate 13. The conductive
plate shown in FIG. 3 (a) is provided with projections 18a and 18b for connecting signal lines
from the voice coil inward of one end of the main body of the semicircular conductive plates 13a
and 13b. The projections 19a and 19b for connecting with the lead wire for connection with the
external acoustic device are provided on the outer side of one end of the conductive plate of the
second embodiment, as shown in FIG. , 13b can be changed, or the amount of projection of the
projections 18a, 18b, or the shape can be changed according to the mounting conditions of the
speakers.
[0013]
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Further, as shown in FIG. 3 (c), three conductive plates are provided (13a, 13b, 13c), and further,
projections 20a, 20b are provided, and these projections 20a, 20b are network circuits and filter
circuits for adjusting sound quality. Etc. may be connected. If the protrusions 20a and 20b are
shorted by a conductor, the structure is electrically the same as that shown in FIGS. 3 (a) and 3
(b).
[0014]
FIG. 4 shows another embodiment of the present invention. In this embodiment, a connector is
used as an electrical connection member, and a high sound speaker is added to form a two-way
speaker system. In addition, about the structure similar to FIG. 1, the same code | symbol is
attached | subjected and description is abbreviate | omitted. The signal line 15 a to the voice coil
6 is drawn along the surface of the diaphragm 9 and connected to the connector 43 sandwiched
between the upper arrow 42 and the lower arrow 44. The high-tone speaker 46 covers the front
of the speaker unit 1 and is fixed to a speaker grill 34 for protection and decoration. The lead
wire 48 for the input signal drawn from the high sound speaker 46 is connected to the terminal
of the connector 49 by soldering or the like. The first terminal of the connector 49 can be
connected to the connector 43, the second terminal can be connected to the connector 51
connected to the signal cord 50 from the external audio equipment, and the third terminal is the
lead wire of the high sound speaker 46 48 is a connector connected to a terminal, and a circuit
for dividing the band of the signal, so-called network circuit, is built in between the first, second
and third terminals, and high frequency sound signal is supplied to the high sound speaker 46
The speaker unit 1 is supplied with mid-low tone or full band sound signals. The connector 43
and the connector 51 can be connected, and when the high sound speaker 46 is removed, the
connector 51 can be directly connected to the connector 43 to supply a signal from an external
audio device to the speaker unit 1 It is possible to eliminate the need for connector replacement
and the like at the time of attachment and detachment of the high-tone speaker 46.
[0015]
FIG. 5 is a perspective view showing the relationship between the arrow 41 and the connector
43. As shown in FIG. The arrowhead 41 is composed of an upper arrowhead 42 and a lower
arrowhead 44. The upper arrowhead 42 is provided with a groove 52 and the lower arrowhead
44 is provided with a groove 52. Then, the upper and lower arrows 42 and 44 are arranged such
that the grooves 52 and 54 overlap with each other, and the connector 43 is formed so as to
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sandwich the connector 43 in the holes formed by the grooves 52 and 54. . The position and
number of connectors may be arbitrarily determined depending on the mounting conditions of
the speaker unit 1 and the mounting of network components.
[0016]
As described above, according to the present invention, even when the system of the speaker
system is upgraded (multi-way speaker system), it is sufficient to replace the speaker grille and
connect the connector only, and it is possible to eliminate difficult work such as removing the
door trim. The work efficiency can be improved. FIG. 6 is a block diagram showing another
embodiment of the present invention, in which no electrical connection member is used. In
addition, about the structure similar to FIG. 1, the same code | symbol is attached | subjected and
description is abbreviate | omitted.
[0017]
In the present embodiment, the signal line 15a to the voice coil 6 is drawn along the surface of
the diaphragm 9, passes through the signal line passing hole 63 provided in the arrow paper 61,
and is connected to the signal line of the external acoustic device. The connector 62 for
connection is connected by soldering or the like. The signal line passage hole 63 may be opened
by a drill or the like after forming the arrow 61. As described above, according to the present
embodiment, as described above, the signal line is drawn out to the front of the diaphragm and
the connector is also on the front of the speaker. It can be protected and not corroded. In
addition, since the tinsel wire does not pass in front of the arrow, there is no risk of damage or
disconnection of the signal wire. Moreover, it can implement | achieve, without increasing a
number of parts etc. only by providing the hole 63 for signal line passage in arrowhead.
[0018]
As described above in detail, according to the speaker system of the present invention, the signal
line and the electric connection member are not disposed on the back side of the speaker unit,
and therefore the signal line and the electric connection member It is possible to protect from
blow-up and the like and to prevent corrosion. In addition, since the signal line does not pass in
front of the arrow and the speaker is attached, damage to the signal line is prevented because the
speaker and the arrow are not pinched in a state where an excessive force is applied. It can also
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prevent breakage.
[0019]
Brief description of the drawings
[0020]
FIG. 1 is a cross-sectional view of a loudspeaker according to a first embodiment of the present
invention.
[0021]
2 is a perspective view showing the structure of arrow 11 in the first embodiment of the present
invention.
[0022]
Fig. 3 Configuration diagram showing the shape of the conductive plate
[0023]
FIG. 4 is a cross-sectional view of a loudspeaker showing a second embodiment of the present
invention.
[0024]
FIG. 5 is a perspective view showing the structure of the arrow 41 in the second embodiment of
the present invention.
[0025]
FIG. 6 is a cross-sectional view of a speaker showing a third embodiment of the present
invention.
[0026]
Fig. 7 Cross section showing the structure of a conventional waterproof speaker
[0027]
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Explanation of sign
[0028]
11, 41, 61 ... arrow paper 12, 32 ... upper arrow paper 14, 34 ... lower arrow paper 12 ...
conductive plate 15a, 83a ... signal line
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