JPH0725697

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DESCRIPTION JPH0725697
[0001]
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a
speaker signal line extraction structure, and more particularly to a speaker signal line extraction
structure for a door mount speaker of an automobile.
[0002]
2. Description of the Related Art In recent years, in order to enhance the sound effect of car
audio, an audio system in which a speaker is provided at a door of a car has been used. FIG. 3 is a
front view schematically showing a door of a car and a speaker mounted on the door, and in the
figure, reference numeral 30 denotes a door. The door 30 is composed of a window frame 31, a
window glass 32, an inner panel 33, an outer panel 34, etc. A space 35 is formed between the
inner panel 33 and the outer panel 34 for inserting the window glass 32 etc. There is. In order to
prevent rainwater and dust from entering the space portion 35, a synthetic rubber weather strip
32a is disposed on the upper side of the space portion 35 in which the window glass 32 enters
and leaves, with the window glass 32 interposed therebetween. A speaker 40 is disposed in the
lower part of the space 35 below the window glass 32b when the window glass 32 is opened the
most, and the speaker 40 has a cone 42 side facing the compartment 36 (hereinafter referred to
as the vehicle interior) The side is referred to as the front side) is attached to the opening 33a of
the inner panel 33, and the surface of the speaker 40 is covered by a net 41a for protecting the
cone 42 and the like. Further, around the speaker 40, a door trim composed of a core material, a
pad, a skin, and the like (not shown) is attached to the indoor surface of the inner panel 33.
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[0003]
FIG. 4 is a cross-sectional view schematically showing a conventional speaker. In the figure,
reference numeral 43 denotes a back plate having a substantially disk shape. A pole piece 44 is
disposed on the center line of the back plate 43, a magnet 45 is disposed concentrically with the
pole piece 44 on the outer periphery of the pole piece 44, and a ring-shaped top plate 46 is
disposed on the front of the magnet 45. It is set up. The rear end portion of the speaker frame 47
in a plan view substantially hollow inverted truncated cone shape having a notch portion is
attached to the front surface of the top plate 46, and a flange portion having a substantially
rectangular cross section, for example, from the front end portion of the speaker frame 47 47a is
extended. An outer frame 41 is fixed to the outer periphery of the flange portion 47a, and a net
41a is fixed to the inside of the front of the outer frame 41. A voice coil bobbin 48 having a
substantially cylindrical shape is disposed between the pole piece 44 and the magnet 45, the top
plate 46, and the lower portion of the speaker frame 47. A substantially ring-shaped suspension
49 having a ridge is disposed and fixed to the voice coil bobbin 48 middle portion and the lower
portion of the speaker frame 47, and the voice coil bobbin 48 is formed between the pole piece
44 and the magnet 45 and top plate 46 It is supposed to be held in position. The rear end of a
conical cone 42 is connected to the front of the voice coil bobbin 48, and a substantially
hemispherical center cap 42a is disposed and fixed at the middle of the cone 42. Further, one
end portion of the roll-type speaker edge 50 is attached to the front surface of the flange portion
47 a of the speaker frame 47, and a ring-shaped gasket 50 a is attached to the front surface of
the outer peripheral portion of the speaker edge 50. The inner peripheral portion of the speaker
edge 50 is connected to the front end portion of the cone 42 so that the cone 42 is stably held by
the flange portion 47a. On the other hand, a voice coil 51 using a copper wire or the like is
wound around the outer periphery of the voice coil bobbin 48, and one end of a speaker signal
line 52 is connected to the voice coil 51. The speaker signal line 52 is wired along the outer
surface of the voice coil bobbin 48 and the front surface of the cone 42, guided from the middle
of the front surface of the cone 42 to the outer surface side of the cone 42, and the other end of
the speaker signal line 52 is disposed on the terminal table 47b. It is connected to the connector
53 of waterproof structure, and the drawing structure 54 of a speaker signal wire ¦ line is
comprised by these. The speaker 40 is composed of the magnet 45, the speaker frame 47, the
cone 42, the voice coil 51, etc. The speaker 40 is mounted on the door 30 by contacting and
attaching to the surface.
[0004]
When using the speaker 40 configured as described above, when an output electrical signal from
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a main amplifier (not shown) is sent to the voice coil 51 via the connector 53 and the speaker
signal line 52, the vicinity of the voice coil 51 is obtained. Since the magnet 45 is excited in a
fixed direction by the magnet 45, the voice coil 51 is driven at the same frequency as the output
signal and vibrates. Then, this vibration is propagated to the cone 42 through the voice coil
bobbin 48, and the air in front of the cone 42 is vibrated to transmit the sound to the front of the
speaker 40.
[0005]
Although the weather strip 32a is disposed in the upper part of the space 35 where the abovementioned speaker 40 is mounted, it is difficult to make this function complete, and rainwater
There is a problem that dust and dirt intrudes into the space 35 by all means. Therefore, in the
above-described speaker signal line drawing structure 54, since the connector 53 is disposed on
the terminal table 47b of the speaker frame 47 in the space portion 35, it is necessary to use a
waterproof structure as the connector 53. . As a result, there is a problem that the price of the
connector 53 is more than tripled compared to the connector of the general structure.
[0006]
The present invention has been made in view of such problems, and can prevent rain water and
dust from adhering to the connector, and a connector of a general structure can be applied, thus
reducing the cost. It is an object of the present invention to provide an extraction structure of
speaker signal lines that can
[0007]
SUMMARY OF THE INVENTION In order to achieve the above object, according to the present
invention, the speaker signal line drawing structure according to the present invention is a
speaker signal line for drawing a speaker signal line to which a voice coil is connected to a
connector side. In the pullout structure, the connector is fixed to a front surface of a flange
portion of a speaker frame, and the speaker signal line is connected to the connector through the
space between the flange portion and the speaker edge.
[0008]
According to the present invention, the connector is fixed to the front of the flange portion of the
speaker frame, and the speaker signal line penetrates between the flange portion and the speaker
edge. Since the connector is connected to the connector, the connector can be installed on the
inside of the vehicle compartment where there is little risk of rain water and dust entering, so
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that the connector can be converted from the waterproof structure to the general structure. It is
possible to reduce the manufacturing cost.
[0009]
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present
invention will be described with reference to the drawings.
The same reference numerals are given to components having the same functions as those of the
conventional example. FIG. 1 is a view schematically showing an embodiment of the drawing
structure of the speaker signal line according to the present invention. (B) shows a partially
enlarged perspective view of the lead-out structure of the speaker signal line.
The configuration of the speaker shown in FIG. 1 is the same as that of the conventional speaker
40 except for the structure for drawing out the speaker signal line, so the detailed description
thereof is omitted here, and the configuration is described only for the points different from the
conventional one. explain.
A connector 13 of a general structure is fixed to the front surface of the flange portion 14a of the
speaker frame 14, one end of a lead wire 13a is connected to the connector 13, and the lead wire
13a passes through a hole 14b formed in the flange portion 14a. The other end of the lead wire
13a is connected to a main amplifier (not shown). A hole 16a is formed in the gasket 16 near the
connector 13, and a hole 15a is formed in the speaker edge 15 near the hole 16a. On the other
hand, the speaker signal line 12 connected to the voice coil 51 is wired along the voice coil
bobbin 48 outer wall, the front surface of the cone 42, guided from the middle of the front
surface of the cone 42 to the outside of the cone 42, and forward along the front surface of the
speaker frame 14 Wired to. Furthermore, the speaker signal line 12 passes through the holes
15a and 16a, the other end of the speaker signal line 12 is connected to the connector 13, and
the hole 16a of the gasket 16 is sealed using a sealing material (not shown). The flange portion
14 a, the speaker edge 15, the gasket 16, the connector 13, and the speaker signal line 12
constitute a speaker signal line extraction structure 11.
[0010]
As apparent from the above description, in the speaker signal line drawing out structure 11
according to the embodiment, the connector 13 can be installed on the side of the compartment
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36 where there is little risk of rain water and dust entering the connector 13. Can be converted
from the waterproof structure to the general structure, which can reduce the manufacturing cost.
[0011]
FIG. 2 is a view schematically showing the extraction structure of the speaker signal line
according to another embodiment, wherein (a) is a sectional view of the speaker, and (b) is a
partial enlargement of the extraction structure of the speaker signal line. It shows a perspective
view.
The configuration of the speaker shown in FIG. 2 is the same as that of the conventional speaker
40 except for the structure for drawing out the speaker signal line, so the detailed description
thereof is omitted here, and the configuration is described only for the points different from the
conventional one. explain. A connector 23 of a general structure is fixed to the front surface of
the flange portion 24a of the speaker frame 24, one end of a lead wire 23a is connected to the
connector 23, and the lead wire 23a passes through a hole 24b formed in the flange portion 24a.
The other end of the lead wire 23a is connected to a main amplifier (not shown). A pedestal 27
having a substantially ring shape is interposed between the flange portion 24 a and the speaker
edge 25, and a notch 27 a is formed in the pedestal 27 in the vicinity of the connector 23. On the
other hand, the speaker signal line 22 connected to the voice coil 51 is wired along the voice coil
bobbin 48 outer wall, the front surface of the cone 42, guided from the middle of the front
surface of the cone 42 to the outside of the cone 42, and forward along the front surface of the
speaker frame 24 Wired to. Furthermore, the speaker signal line 22 passes through the notch
27a of the pedestal 27, the other end of the speaker signal line 22 is connected to the connector
23, and the notch 27a is sealed using a sealing material (not shown). The connector 23, the
flange portion 24 a, the speaker edge 25, the pedestal 27, and the speaker signal line 22 form a
speaker signal line extraction structure 21.
[0012]
In the speaker signal line extraction structure 21 configured as described above, substantially the
same effect as that of the embodiment shown in FIG. 1 can be obtained.
[0013]
In the above embodiment, the flanges 14a and 24a have a substantially rectangular shape in a
front view, but the present invention is not limited to this and can be applied to any shape.
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[0014]
Although the conical cone 42 is used in the above embodiment, it may be a curved corn or
parabolic corn.
[0015]
As described above in detail, in the speaker signal line lead-out structure according to the present
invention, the connector is fixed to the front surface of the flange portion of the speaker frame,
and the speaker signal line is the flange portion and the speaker Since it penetrates between the
edge and is connected to the connector, the connector can be installed on the inside of the
vehicle cabin with little risk of rain water and dust entering, so that the connector is made from
waterproof structure to general structure It is possible to reduce the manufacturing cost.
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