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JPH10243488

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Notice
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
financial decisions, should not be based on machine-translation output.
DESCRIPTION JPH10243488
[0001]
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a
speaker box apparatus having a partition wall in an audio apparatus incorporating a speaker
such as a radio cassette.
[0002]
2. Description of the Related Art In recent years, in the case of an audio device integrated with a
speaker unit such as a radio cassette, it has recently been required to satisfy many requirements
such as downsizing of the device, improvement of sound quality, improvement of design and
price reduction As a means for that purpose, the cabinet is divided up and down, and the speaker
is mounted upward to suppress the height of the device regardless of the aperture of the speaker,
and diffuses the sound by the diffuser provided above the speaker to achieve directivity It is done
to improve. In addition, it is acoustically important that the speaker box be separated from the
electric circuit portion and the like to form a sealed structure.
[0003]
Hereinafter, the configuration of the acoustic device in which the conventional speaker box as
described above is integrated will be described. FIG. 6 shows an example of a configuration using
a conventional speaker box device. The upper cabinet 11 and the lower cabinet 12 to which the
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speaker 6 is fixed are integrally provided with partition ribs 11a and 12a, respectively, and the
convex portion 11b at the lower end of the partition rib 11a and the recess 12b at the upper end
of the partition rib 12a are engaged with each other A speaker box portion sealed by enclosing
the periphery of the speaker 6 is configured.
[0004]
Further, a diffuser 11d aiming at an acoustic diffusion effect is integrally provided in the vicinity
of the opening 11c of the cabinet 11, and the net 13 covering the opening 11c is a recess 11e of
the diffuser 11d and a recess 11f of the cabinet 11. It is inserted in and fixed. Then, the net 13 is
pressed and fixed, and the decorative plate 14 covering the diffuser 11 d and the opening 11 c is
fixed by the screw 7.
[0005]
SUMMARY OF THE INVENTION In such a conventional closed speaker box apparatus of the
upper and lower divided cabinet structure, the partition ribs 11a and 12a, the diffuser 11d and
the like are integrally provided to the cabinets 11 and 12, respectively. The According to this
method, the partition ribs 11a and 12a need to be thick in order not to resonate, but the resin
molding causes depressions called sinks in the portions 11g and 12c. Although the decorative
plate 14 is provided to cover the outer appearance including the sink marks and the diffuser 11
d in the vicinity of 11 g, there are design problems such as the appearance of dividing lines,
fixing screws and the like in the outer appearance, Also, the assembly work was complicated and
the number of man-hours increased.
[0006]
Further, when the partition ribs 11a and 12a are integrally formed with the cabinets 11 and 12,
it is necessary to divide the mold largely because of the mold structure, and complication of the
mold can not be avoided. In addition, the resin cooling of the partition rib portions 11a and 12a,
which has been thickened in molding, is insufficient and the molding time is prolonged.
[0007]
The present invention was made to provide a high-value speaker box apparatus which has a
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simple mold structure, is easy to process parts, is effective in cost reduction, and removes design
defects and has a beautiful appearance. It is a thing.
[0008]
SUMMARY OF THE INVENTION In order to solve this problem, the speaker box device according
to the present invention is, in the first aspect, a sound output hole, a baffle fitting portion, a
bulkhead fitting portion, and a peripheral fitting portion. Upper cabinet, a flat plate, and a
partition member fitted with the partition fitting portion of the upper cabinet, and a lower
cabinet peripheral fitting portion fitted with the upper cabinet peripheral fitting and the partition
member A lower cabinet having a partition rib, a speaker sound emission hole for emitting sound
upward from the attached speaker, and the periphery of the speaker sound emission hole, and
fitting with the baffle fitting portion of the upper cabinet; A baffle member having a fitting
portion for sealing the periphery of a sound emission hole of a cabinet, and a baffle member
fixed to the inner surface of the upper cabinet, and the spy of the rear of the diaphragm of the
speaker attached to the baffle member The rear space and the sound release hole side of the
speaker front space, characterized by being configured to be separated by fitting the fitting
portion of the baffle fitting portion and the baffle member of the upper cabinet.
[0009]
In this configuration, the partition member is made a separate member from the upper cabinet,
so that the mold structure of the upper cabinet is simplified, and the molding problems affecting
the design are eliminated, and since the partition member can be formed by pressing, it is
extremely inexpensive It can be made.
[0010]
Further, in the second invention, in addition to the configuration of the first invention, the baffle
member is provided with a partition holding portion engaged with the lower end portion of the
partition member, and the baffle member is attached to the upper cabinet. The partition wall
member is configured to be pressed and fixed to the partition wall fitting portion of the upper
cabinet by the partition wall holding portion, and to be sandwiched between the partition wall
member and the partition rib of the lower cabinet. .
[0011]
Accordingly, the partition member is held by the baffle member to press-fit the partition member
upward, and the lower end of the partition member is stably held and smoothly guided when the
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lower cabinet is fitted to the upper cabinet. The quality is good.
Further, since the central portion of the planar partition member is held, it is extremely effective
in suppressing the resonance of the speaker box portion.
[0012]
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An embodiment of the present
invention will be described below with reference to the drawings.
FIG. 1 is an overall perspective view of an audio device equipped with a speaker box device
according to an embodiment of the present invention, FIG. 2 is a cross-sectional view of the main
parts of the speaker box device, and FIG. 3 is a bottom view showing an internal structure of the
upper cabinet. FIG. 4 is a cross-sectional view including the partition surface, and FIG. 5 is a plan
view of the baffle member.
[0013]
1 to 5, the cabinet of the audio equipment comprises an upper cabinet 1 constituting an upper
half and a lower cabinet 2 constituting a lower half, and an electronic apparatus main body 8 and
a left speaker box 9L are provided at the center of the equipment. , And the right speaker box
unit 9R.
Each of the upper cabinet 1 and the lower cabinet 2 has at least a portion including a convex
fitting portion 1d and a groove 2d as a cabinet peripheral fitting portion around the end face and
a portion forming the speaker box portions 9L and 9R. Provided in the range necessary for
sealing the housings, and fitted in contact with each other.
In addition, a punching net 3 having a large number of fine holes is provided on the upper
portion of the speaker box portions 9L and 9R to cover the sound emitting hole 1b provided
above the upper cabinet 1 and provided in the upper cabinet 1 in order to hide the internal
structure. It is inserted into and fixed to the groove 1f.
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[0014]
Since the speaker boxes 9L and 9R are symmetrical, the left speaker box 9L side will be
described below with reference to FIGS. Baffle members 4 in which a substantially conical
diffuser 4d is integrally formed below the sound release hole 1b provided in the upper cabinet 1
are provided in the upper cabinet 1 with the screws 7 passing through the screw holes 4f. It is
fixed to the boss 1e. A circular speaker sound emission hole 4e is opened in a flat portion held
substantially horizontally at the center of the baffle member 4, and the speaker 6 is fixed upward
on the lower surface of the speaker sound emission hole 4e. It has a substantially conical shape
which is above the speaker 6 and extends in the sound emitting direction of the speaker 6.
[0015]
Furthermore, a sealing rib 4c is provided along the baffle rib 1c surrounding the sound emitting
hole 1b on the inner surface of the upper cabinet 1 so as to surround the upper surface
periphery of the speaker sound emitting hole 4e of the baffle member 4 Then, the periphery of
the sound emission hole of the upper cabinet is sealed, and the front sound path of the notshown diaphragm of the speaker 6 reaching the outside of the upper cabinet 1 through the
speaker sound emission hole 4e and the sound emission hole 1b is the speaker of the speaker
box portion 9L The rear space 10 is blocked.
[0016]
Next, as a partition of the speaker box portion 9L, the partition member 5 in which a flat plate is
punched is formed at the groove 1a as a partition fitting portion provided in the upper cabinet 1
and at the tip of the partition rib 2c integrally provided in the lower cabinet 2 The speaker box
portion 9L is sealed with respect to the electronic device main body portion 8 by being
respectively fitted in the groove portions 2a as the partition fitting portions and the notch 5a is
provided in a part thereof, and the notch 5a is baffled The partition wall holding portion 4 a
provided on the member 4 is fitted and sandwiched between the partition wall rib 2 c of the
lower cabinet 2 and the partition wall holding portion 4 a.
A convex fitting portion 4b is formed in the partition wall holding portion 4a, and the end edge of
the convex fitting portion 4b and the end edge of the partition wall member 5 are configured to
be continuous, and both are formed in the groove portion 2a of the partition rib 2c. By fitting
them together, the space between the partition member 5 and the partition rib 2c is sealed, and a
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speaker box portion 9L having a speaker rear space 10 sealed as a whole is configured. The
description of the speaker box portion 9R is omitted because it is symmetrical.
[0017]
Here, as shown in FIG. 4b, when the depth dimension is d1 and the dimension including the
convex fitting portion 4b of the partition wall holding portion 4a of the baffle member 4 is d2, as
shown in FIG. 4b, the notch 5a is d1. By setting the thickness width of the convex fitting portion
4b to be equal to the thickness of the partition member 5 by setting d2 = d2, the convex fitting
portion 4b described above and the edge of the partition member 5 are continuously connected
to the groove 2a. It will fit.
[0018]
Although the notch 5a is provided on the side of the partition member 5 in order to hold the
baffle member 4, the notch may be provided on the side of the partition rib 2c of the lower
cabinet 2, and both the partition member 5 side and the partition rib 2c and There is no problem
even if it has a notch.
[0019]
In addition, when passing speaker wiring etc. between the speaker box parts 9L, 9R and the
electronic device main body part 8, notches 5b, 5c etc. may be provided in the partition member
5 to pass through this or cut into the partition rib 2c The notch 2e may be provided.
[0020]
The operation of the speaker box device configured as described above will be described below.
When a diaphragm (not shown) of the speaker 6 vibrates in the speaker box portion 9L, a sound
pressure is generated upward, and it strikes the surface of the diffuser 4d which spreads in a
substantially conical shape upward through the speaker sound emission hole 4e. It reflects and
radiates from the sound emission hole 1b of the cabinet 1 to the left and forward.
In the speaker box unit 9R (not shown), the light is emitted rightward and forward.
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As a result, sound pressure can be diffused and radiated over a wide range. The sound pressure
of the speaker rear space 10 is sealed by the partition member 5 and the partition rib 2c and
does not leak to the electronic device main body 8, and the speaker by the baffle rib 1c of the
upper cabinet 1 and the sealing rib 4c of the baffle member 4 It does not leak to the front of 6
nor interfere with the sound pressure on the front.
[0021]
Each of the fitting portions between the upper cabinet 1 and the lower cabinet 2, the upper
cabinet 1 and the partition member 5, and the partition member 5 and the partition rib 2c is a
combination of a convex fitting portion and a groove portion for receiving the same. In the
illustrated example, the fitting between the upper cabinet 1 and the baffle member 4 is
exemplified by the sliding of the convex ribs, but the fitting is not limited to these, and may be,
for example, a butt between flats and convexes. A soft synthetic resin may be sandwiched, and
any structure that can be sealed may be used.
[0022]
Further, in the above description, the sealing of the left and right speaker box portions 9L and 9R
is a sealing structure in the fitting of the cabinet usually performed at least in the speaker box of
the audio device, and a port provided to improve the acoustic characteristics And the like.
[0023]
As described above, according to the present embodiment, since the partition wall member 5 is a
separate member from the upper cabinet 1, the mold structure of the upper cabinet is simplified,
and there is no problem in molding and the design is also excellent. Since the partition member 5
itself can be formed by pressing, it can be made extremely inexpensively.
[0024]
The lower end of the partition member 5 is stably held by fitting the partition member 5 by press
fitting the partition member 5 upward with the partition holding portion 4a provided at one end
of the baffle member 4 attached to the upper cabinet 1 with the screw 7. When 2 is fitted to the
upper cabinet, it is smoothly guided and the workability is improved.
Further, since the central portion of the planar partition member 5 is held, it is extremely
effective in suppressing the resonance of the speaker box portions 9L and 9R.
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[0025]
As described above, according to the present embodiment, the workability as a whole is improved
while satisfying the downsizing and high sound quality of the device, and it is possible to provide
an excellent speaker box which is inexpensive and desirable in appearance. .
[0026]
As described above, according to the first aspect of the invention, the mold structure of the upper
cabinet is simplified, and the speaker box apparatus of the present invention is excellent in
design and no problem in molding, and Since the partition member can be formed by pressing, it
can be made extremely inexpensively.
[0027]
Further, according to the configuration of the second aspect of the present invention, the lower
end of the partition member is stably held by pressing the partition member upward by the
partition holding portion provided at one end of the baffle member attached to the upper cabinet.
When the cabinet is fitted to the upper cabinet, it is smoothly guided to improve the workability,
and the central part of the planar partition member is held, which is extremely effective for
suppressing the resonance of the speaker box. .
[0028]
Thus, while satisfying the downsizing and high sound quality of the device, the workability as a
whole can be improved, and the advantageous effects of the cost reduction of the device, the
improvement of the appearance design, and the performance improvement can be obtained.
[0029]
Brief description of the drawings
[0030]
1 is an overall perspective view of a device equipped with the speaker box device according to
one embodiment of the present invention
[0031]
Figure 2 Main part cross section of the speaker box device
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[0032]
Figure 3 is a bottom view showing the internal structure of the upper cabinet as well
[0033]
FIG. 4 (a) is a cross-sectional view including a partition as in FIG. 4 (b).
[0034]
Figure 5 is a plan view of the baffle member as well
[0035]
Fig. 6 Cross-sectional view of the main part of the conventional speaker box device
[0036]
Explanation of sign
[0037]
DESCRIPTION OF SYMBOLS 1 upper cabinet 1a groove part 1b sound output hole 1c baffle rib
1d convex fitting part 1e boss 2 lower cabinet 2a groove part 2c partition rib 2d groove 4 baffle
member 4a partition wall holding part 4b convex fitting part 4c sealing rib 4d diffuser 4e
speaker Sound emission hole 5 Partition member 5a Notch 6 Speaker 9L Left speaker box
portion 10 Speaker rear space
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