close

Вход

Забыли?

вход по аккаунту

?

JP2012160781

код для вставкиСкачать
Patent Translate
Powered by EPO and Google
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 JP2012160781
The present invention provides a bass reproducing apparatus capable of reproducing deep bass
using an exciter with a simple structure. SOLUTION: An exciter 3 for generating a vibration
according to a range component of an audio signal, and a diaphragm 5 for vibrating by the
vibration of the exciter 3 to emit a sound of a low range component are provided, the exciter 3
and the diaphragm 5 And a shock absorber 12 for damping the vibration of the unnecessary
range component while transmitting the vibration of the low range component. [Selected figure]
Figure 4
Bass playback device
[0001]
The present invention relates to a bass reproduction device for a vehicle using an exciter.
[0002]
Conventionally, this exciter is attached to an interior material of a vehicle using an exciter that
generates a vibration according to a range component of an input audio signal, and the interior
material is vibrated by the exciter as a diaphragm to reproduce a sound An apparatus is known
(see, for example, Patent Document 1).
[0003]
Unexamined-Japanese-Patent No. 2006-180368
11-05-2019
1
[0004]
By the way, the exciter generates a vibration corresponding to the middle to high range
component of the input audio signal and a vibration corresponding to the low range component.
The vibrations generated by the exciter according to the middle and high range components and
the vibrations according to the low range component are transmitted to the diaphragm, but the
sound of the low range is of the middle and high range due to the characteristics of the human
ear. It is difficult to hear the sound in the low range, which is supposed to be heard, because it is
masked by the middle to high range, so it is difficult to hear the desired low range.
That is, in order to construct a bass reproduction apparatus that actively reproduces bass sounds,
such as a woofer, using the exciter, for example, only the bass component of the audio signal
needs to be input to the exciter. Special measures have to be taken, such as providing a filter at
the output side of the signal or at the input stage of the exciter, resulting in a complicated
structure.
In addition, there is a problem that the reaction of the amplitude of the diaphragm due to the
vibration of the exciter is returned to the exciter, and the exciter itself vibrates more than it can,
and the sound is reproduced with a sound quality with a lot of distortion. An object of the present
invention is to solve the problems of the prior art described above, and to provide a bass
reproducing apparatus capable of playing deep bass using an exciter with a simple structure.
[0005]
In order to achieve the above object, the present invention comprises an exciter that generates a
vibration according to a sound range component of an audio signal, and a diaphragm for
vibrating by the vibration of the exciter to emit a sound of a low sound range component, The
present invention is characterized in providing a bass reproducing apparatus provided with a
buffer material between the exciter and the diaphragm for transmitting vibrations of a bass
component and damping unnecessary vibrations of the bass component.
[0006]
In this configuration, the diaphragm may be configured to be vibrated by the vibration of the
11-05-2019
2
exciter, transmit the vibration of the exciter to the vehicle frame and cause it to resonate, and
emit a sound of a bass range component.
Further, a bracket may be provided to suppress the bending of the shock absorbing material due
to the vibration of the exciter. Further, the mounting means for mounting the exciter on the
diaphragm may be integrally formed on the shock absorbing material.
[0007]
According to the present invention, the exciter includes an exciter that generates a vibration
according to a range component of an audio signal, and a diaphragm that vibrates due to the
vibration of the exciter to emit a sound of a low range component, the exciter and the diaphragm
Since the shock absorbing material which attenuates the vibration of the unnecessary range
component is provided while transmitting the vibration of the low range component, the
vibration according to the middle to high range component of the audio signal input to the
exciter and the vibration of the exciter The shock absorbing material can absorb the vibration
returned from the vibrating plate by the vibration to the exciter, and it is possible to reproduce
the deep bass using the exciter with a simple structure.
[0008]
It is a figure showing the speaker structure of this embodiment.
It is a figure which shows the structure of an exciter. It is a figure which shows a secondary
vibration member. It is a figure which shows the attachment structure of an exciter. It is a figure
which shows the attachment structure of the exciter of 2nd Embodiment. It is a figure which
shows the attachment structure of the exciter of 3rd Embodiment. It is a figure which shows the
attachment structure of the exciter of 4th Embodiment. It is a figure which shows the attachment
structure of the exciter of 5th Embodiment. It is a figure which shows the structure of the
secondary vibration part of the exciter attachment part of 5th Embodiment. It is a figure which
shows the attachment structure of the exciter of 6th Embodiment. It is a figure which shows the
attachment structure of the exciter of 7th Embodiment.
[0009]
11-05-2019
3
First Embodiment Hereinafter, an embodiment of the present invention will be described with
reference to the drawings. FIG. 1 (A) is an external appearance view of a vehicle 2 provided with
a bass reproduction device 1 according to an embodiment to which the present invention is
applied, and FIG. 1 (B) is a view of the vehicle 2 shown in FIG. -Is a cross-sectional view at a. In
addition, the front-back direction of the vehicle 2 is based on the front and rear of the vehicle 2
shown to FIG. 1 (A), and let the left-right with respect to this back and front be the vehicle width
direction of the vehicle 2. FIG. As shown in FIG. 1 (B), the bass reproduction device 1 is
configured of an exciter 3 and a secondary vibration unit (diaphragm) 5. The exciter 3 is attached
near equidistant distance from both end points of the secondary vibration unit 5.
[0010]
The secondary vibration unit 5 is disposed in a beam shape on the back side of the interior
material 9 of the vehicle 2, that is, between the interior material 9 and the ceiling panel 4 which
is the roof of the vehicle 2. All over, it is provided around the top of the front seat. The secondary
vibration unit 5 is formed to be curved along the ceiling panel 4 of the vehicle 2, and both ends 5
a thereof are formed in a flange shape so as to hang down along the side panel of the vehicle 2.
The secondary vibration unit 5 is fastened to the vehicle frame 6 such as a side panel with a
screw or the like. Both ends 5 a of the secondary vibration unit 5 may be fixed to the vehicle
frame 6 near the window frame of the vehicle 2. According to this configuration, since the
secondary vibration unit 5 is disposed near the ceiling panel 4 along the ceiling panel 4, the
exciter 3 can be installed in the secondary vibration unit 5 without narrowing the overhead space
of the vehicle compartment of the vehicle 2. It can be attached.
[0011]
As shown in FIG. 2, the exciter 3 is roughly configured of a pole 31, a magnet 32, a plate 33, a
frame 34, and a damper 35. The pole 31 is formed in a concave shape and constitutes the bottom
and the side wall of the exciter 3. The magnet 32 is a disk-shaped permanent magnet, and is
mounted on the bottom of the pole 31. The plate 33 is placed on the magnet 32 and formed in a
disk shape that is approximately the same as or slightly larger than the diameter of the magnet
32.
[0012]
11-05-2019
4
In the exciter 3, a magnetic circuit 37 is formed in the pole 31 by the magnet 32 and the plate
33. Further, a damper 35 is fixed to the frame 34, and a voice coil bobbin (not shown) is
elastically held by the damper 35. When an audio signal is input to the exciter 3, the magnetic
circuit 37 formed by the magnet 32 and the plate 33 interacts with the voice coil bobbin held by
the damper 35 in the pole 31, and the input range is input. A vibration corresponding to the
component is generated.
[0013]
As shown in FIG. 1, the exciter 3 is attached to the secondary vibration unit 5, and the secondary
vibration unit 5 is connected to the vehicle frame 6, so that the secondary vibration unit 5 is
generated by the vibration generated by the exciter 3. The amplitude generated by the exciter 3
is transmitted to the vehicle frame 6 through the secondary vibration unit 5 to cause the vehicle
frame 6 to resonate. When the secondary vibration unit 5 is regarded as a string portion of a
stringed instrument, the vehicle frame 6 becomes a portion of the instrument main body, that is,
a resonance cylinder, and the vehicle frame 6 resonates to amplify the sound. Since the exciter 3
is attached near equidistant distance from both end points of the secondary vibration unit 5, the
exciter 3 is advantageous for causing the secondary vibration unit 5 to oscillate.
[0014]
The secondary vibration unit 5 is formed of a cold-rolled steel plate. FIG. 3A is a perspective view
of the secondary vibration unit 5, and FIG. 3B is an enlarged view of a cross section of the
secondary vibration unit 5 taken along the line b-b in FIG. 3A. As shown in FIG. 3, the secondary
vibration portion 5 is formed in the shape of a thin plate in the shape of a strip, and a bead 7
extending in the longitudinal direction is provided at substantially the center. The end 5a of the
secondary vibration unit 5 is formed in a flange shape, and the attachment hole 8 is provided in
the end 5a. The secondary vibration unit 5 is screwed to the vehicle frame 6 through the
mounting hole 8. Further, both ends 5b in the short direction of the secondary vibration portion
5 are bent substantially at right angles in the same direction as the bead 7 for reinforcement.
[0015]
Although the secondary vibration unit 5 is vibrated by the vibration of the exciter 3, since the
secondary vibration unit 5 is provided with the beads 7, generation of several belly and nodes in
11-05-2019
5
the secondary vibration unit 5 is prevented, and the vibration of the exciter 3 is 6 can be told
enough. Further, since the secondary vibration unit 5 is formed in a thin plate shape, it can be
vibrated by receiving the vibration according to the low range component generated by the
exciter 3, and the vibration of the exciter 3 can be I can tell. As described above, the secondary
vibration unit 5 generates the vehicle frame 6 with the intensity that can be oscillated by the
vibration corresponding to the bass component generated by the exciter 3 and the vibration
corresponding to the bass component generated by the exciter 3. Since it is formed in a shape
that can be sufficiently transmitted, the vibration of the exciter 3 can be transmitted to the
vehicle frame 6 through the secondary vibration unit 5 to resonate, thereby reproducing rich
deep bass.
[0016]
The secondary vibration unit 5 is also formed of a cold-rolled steel plate generally used in a
vehicle panel, and is provided across the vehicle width direction of the vehicle, and therefore has
an effect of enhancing the rigidity of the roof of the vehicle 2 . When the vehicle 2 is provided
with a roof reinforcing bar installed between the vehicle frames 6 in the vehicle width direction,
the roof reinforcing bar may be used as the secondary vibration unit 5. When the roof
reinforcing bar of the vehicle 2 is used as the secondary vibration unit 5, the secondary vibration
unit 5 may be welded and fixed to the vehicle frame 6. It is desirable that the secondary vibration
unit 5 not be fixed to the vehicle frame 6 except for the both ends 5a, but the parts other than
the both ends 5a are held so as not to be strongly suppressed. The structure may be provided on
the vehicle 2 side.
[0017]
According to these configurations, the exciter 3 that generates a vibration according to the range
component of the input audio signal is a secondary vibration unit provided along the vehicle
width direction of the vehicle 2 around the upper part of the front seat It is provided near the
equal distance from both ends 5a of 5 and is disposed at a position close to the ear of the
occupant of the vehicle 2. Therefore, even if the sound pressure is not increased, the reproduced
sound can reach the occupant's ear, and power consumption can be reduced.
[0018]
11-05-2019
6
In addition, the vibration generated by the exciter 3 in accordance with the range component of
the input audio signal is transmitted to the vehicle frame 6 through the secondary vibration unit
5 and resonated to amplify and reproduce the sound, so even if the small exciter 3 is used.
Sufficient sound pressure can be secured. Therefore, the use of the compact exciter 3 can
suppress the reduction of the occupant space of the vehicle 2 due to the arrangement of the
exciter 3.
[0019]
Next, the mounting structure of the exciter 3 to the secondary vibration unit 5 will be described.
FIG. 4 is a partial cross-sectional view showing the exciter 3 and the attachment member 10 for
attaching the exciter 3 to the secondary vibration unit 5. The mounting member 10 is composed
of a bracket 11 and a shock absorbing material 12. The exciter 3 is affixed and fixed to the
mounting member 10 by bonding or the like. The bracket 11 and the shock absorbing material
12 are formed in a substantially rectangular shape, and a mounting hole 13 is provided in the
vicinity of the center on both end sides in the longitudinal direction. The exciter 3 fixed to the
bracket 11 is screwed to the secondary vibration unit 5 via the shock absorbing material 12 with
a mounting screw 13A inserted into the mounting hole 13.
[0020]
The buffer material 12 absorbs the vibration of the unnecessary range component between the
exciter 3 and the secondary vibration unit 5 which is output as noise. The shock absorbing
material 12 is formed of an elastic material, and can control the vibration component to be
absorbed due to the difference in hardness and shape. As a material of the shock absorbing
material 12, a rubber material which can change the hardness variously by changing the material
or thickness and can be easily formed into a desired shape can be suitably used.
[0021]
The vibration component between the exciter 3 and the secondary vibration unit 5 absorbed by
the shock absorbing material 12 includes a vibration according to the middle to high range
component of the audio signal input to the exciter 3 and an amplitude 2 due to the vibration of
the exciter 3 The vibration that is returned from the next vibration unit to the exciter is included.
When vibrations corresponding to the middle to high range components of the audio signal input
11-05-2019
7
to exciter 3 are transmitted to secondary vibration unit 5, the human ear has a characteristic that
the sounds in the low range are harder to hear than the sounds in the high range Because of the
presence of the noise, the sound in the low frequency range, which should have been generated
by the vibration corresponding to the low frequency range component being transmitted to the
vehicle frame 6, is masked by the high frequency range sound, making it difficult to hear. In
addition, when the reaction of the secondary vibration portion, which is oscillated by the
vibration of the exciter 3, is returned to the exciter, the exciter 3 vibrates more than its own
amplitude, resulting in a sound quality with a sense of distortion.
[0022]
The exciter 3 is attached to the secondary vibration unit 5 by sandwiching the shock absorbing
material 12 between the exciter 3 and the secondary vibration unit 5, so that the medium-high
range component transmitted from the exciter 3 to the secondary vibration unit 5 The vibration
corresponding to is absorbed by the buffer 12 and attenuated. In addition, with regard to the
vibration according to the low range component, the time from the generation of the low range
to the convergence is generated by the vibration of the shock absorber 12 itself when the
vibration of the exciter 3 is transmitted to the buffer 12. Compared with the case of direct
fixation to the part 5, the case of via the cushioning material 12 is longer. Thus, by fixing the
exciter 3 to the secondary vibration unit 5 via the buffer member 12, the sound in the low tone
range to be reproduced can be felt as a deep, wide-spreading low tone.
[0023]
In addition, since the reaction of the secondary vibration unit 5 which is oscillated by the exciter
3 being vibrated is mitigated by the shock absorbing material 12, it is possible to suppress the
acceleration which increases due to the influence of the exciter 3 being reacted. It becomes
possible to generate linear vibration with respect to the input audio signal.
[0024]
The effect of attaching the exciter 3 through the shock absorbing material 12 varies depending
on the material (hardness) or shape of the shock absorbing material 12.
Therefore, the vibration component absorbed by the buffer 12 can be changed by changing the
material or shape of the buffer 12 according to the situation, and the range of sound to be
11-05-2019
8
reproduced and the sound quality can be controlled. It becomes.
[0025]
The attachment member 10 may be attached to the secondary vibration unit 5 by a clip (not
shown) or the like in addition to the attachment screw 13A. According to these configurations,
since the shock absorber 12 is sandwiched between the bracket 11 and the secondary vibration
unit 5 and the exciter 3 is attached, the vibration corresponding to the component of the high
range of the audio signal input to the exciter 3 is the shock absorber Absorbs at 12 and
attenuates. However, since the vibration corresponding to the high range component is
transmitted from the mounting screw 13A to the secondary vibration unit 5, it is effective not
only for the low range sound but also for reproducing the high range sound.
[0026]
In addition, when it is desired to actively reproduce the sound in the high range, the bracket 11 is
directly attached to the side of the vehicle 2 without the shock absorbing material 12 so that the
vibration corresponding to the high temperature range component is performed via the bracket
11 2 It can also be transmitted to the next vibration unit 5 to reproduce the sound in the high
range. The vibration corresponding to the high frequency range component is transmitted by fine
vibration, so it is not necessary to cause the secondary vibration unit 5 to vibrate and transmit
the vibration to the vehicle frame 6. For example, a high strength panel on the vehicle side is
excited Even if 3 is attached directly, the sound of the high range can be reproduced. For
example, by attaching the exciter directly to the inside of the left and right A pillar panels of the
vehicle 2, the panel itself is vibrated by the vibration according to the high range component
generated by the exciter 3 to reproduce the sound in the high range, stereo feeling In addition,
sound vibration can be transmitted to the entire vehicle 2 from the inside of the A pillar panel,
and the sound can be broadened.
[0027]
Second Embodiment In the mounting member 10 of the first embodiment, the bracket 11 to
which the exciter 3 is fixed is sandwiched between the bracket 11 and the secondary vibration
unit 5 with the buffer material 12, and the bracket 11 is mounted by the mounting screw 13A. Is
screwed to the secondary vibration unit 5 and vibration corresponding to the high frequency
11-05-2019
9
range component is transmitted to the secondary vibration unit 5 via the mounting screw 13A,
so that the vibration is attenuated according to the high frequency range component There is
little effect. In addition, since the shock absorbing material 12 is fixed by the mounting screw
13A, the movement of the shock absorbing material 12 is restricted, and the vibration of the
shock absorbing material 12 is suppressed by the vibration corresponding to the low frequency
range component. I can not feel the expansion of the low-pitched sound by using it. Further, if
the thickness of the shock absorbing material 12 is increased, the shock absorbing material 12 in
the vicinity of the attachment portion to the secondary vibration unit 5 may be crushed and the
bracket 11 may be deformed. Absent. In the second embodiment, a mounting member 10A of the
exciter 3 is provided which allows freedom in the thickness of the shock absorbing material 12.
In addition, about the attachment structure to the vehicle 2 of the secondary vibration part 5, and
the structure of the exciter 3, it is the same as 1st Embodiment, The description is abbreviate |
omitted.
[0028]
As shown in FIG. 5 (A), in the second embodiment, the mounting member 10A is composed of a
buffer material 12A formed in a substantially circular shape and a bracket 11, respectively. The
exciter 3 is a buffer material 12A. It is stuck and fixed by adhesion etc. on one side of. As shown
in FIG. 5B, the other side of the cushioning material 12A opposite to the one side to which the
exciter 3 is attached is fixed to the bracket 11 by bonding or the like. The bracket 11 is provided
with a plurality of mounting holes 13. The mounting holes 13 are provided outside the area of
the bracket 11 to which the cushioning material 12A is fixed. The exciter 3 is attached to the
secondary vibration unit 5 by fixing the bracket 11 to the secondary vibration unit 5 with a
mounting screw, a clip or the like (not shown) through the mounting hole 13. The vibration
corresponding to the high frequency range component of the audio signal input to the exciter 3
is absorbed by the buffer material 12A and attenuated. Moreover, since the buffer material 12A
is not provided in the fixing part to the secondary vibration part 5 of the bracket 11 in which the
attachment hole 13 is provided, even if the thickness of the buffer material 12A is thickened The
thickness of the shock absorbing material 12 can be freely set without collapsing the material
12A. In addition, since the cushioning material 12A is not fixed by a mounting screw or the like,
the movement of the cushioning material 12A is not restricted, and the cushioning material 12
itself can be vibrated by the vibration according to the low range component generated by the
exciter 3 Therefore, as described above, it is possible to reproduce an extended bass.
[0029]
11-05-2019
10
Third Embodiment In the mounting member 10A of the second embodiment, since the exciter 3
fixed to the shock absorbing material 12A is attached to the secondary vibration unit 5 via the
bracket 11, only the shock absorbing material 12A is used. Compared to the case where the
exciter 3 is attached to the next vibration unit 5, transmission of the low-pitched sound to the
secondary vibration unit 5 is indirect. In the third embodiment, a mounting structure is provided
in which the shock absorbing material can be directly attached to the secondary vibration unit 5.
In addition, about the attachment structure to the vehicle 2 of the secondary vibration part 5, and
the structure of the exciter 3, it is the same as 1st Embodiment, The description is abbreviate |
omitted.
[0030]
As shown in FIGS. 6A and 6B, the mounting member 10B is fixed to one surface of the buffer
material 12B formed into a substantially rectangular shape and one surface of the buffer material
12B by adhesion or the like, and substantially the same as the buffer material 12B. It is
comprised from the bracket 11 formed in the magnitude | size. The bracket 11 is fixed to the
buffer material 12B by adhesion or the like, and the exciter 3 is attached to the surface of the
bracket 11 which is not fixed to the buffer material 12B. That is, the exciter 3 is fixed to the
cushioning material 12 B via the bracket 11. The cushioning material 12B is provided with a
plurality of mounting holes 13B, and a recess 14 in which the cushioning material 12B is dug up
is formed around the mounting hole 13B. The recess 14 is formed to have approximately the
same size as the head 16 of the mounting screw 15 to be inserted into the mounting hole 13B or
a slightly larger size, and when the shaft 17 of the mounting screw 15 is inserted into the
mounting hole 13B, the head 16 It is configured to be accommodated in the recess 14.
[0031]
Holes 18 are provided in the bracket 11 at positions corresponding to the mounting holes 13B of
the shock absorbing material 12B. The shock absorbing material 12B is attached to the
secondary vibration unit 5 by the attachment screw 15 inserted into the attachment hole 13B of
the shock absorbing material 12B through the hole 18 of the bracket 11. The bracket 11 plays a
role of preventing the shock absorber 12B from bending when the exciter 3 vibrates and the
vibration can not be sufficiently transmitted to the secondary vibration unit 5. According to these
configurations, the shock absorbing material 12B to which the exciter 3 is fixed can be directly
attached to the secondary vibration unit 5, so that the shock absorbing material 12B absorbs the
vibration according to the high range component generated by the exciter 3 It is possible to
attenuate the vibration, and further to directly transmit the vibration corresponding to the low
11-05-2019
11
frequency range component to the secondary vibration unit 5, thereby reproducing the sound of
the extended low frequency range.
[0032]
Fourth Embodiment In the mounting member 10B of the third embodiment, the shock absorbing
material 12B is formed by the shock absorbing material 12B, the mounting hole 13B provided in
the bracket 11, and the mounting screw 15 inserted through the hole 18. Although the exciter 3
is attached to the secondary vibration unit 5 through the screw fixing, the attachment workability
is not so good. In the fourth embodiment, in consideration of the mounting workability, the
mounting portion (rubber bush) to the secondary vibration unit 5 is integrally formed on the
buffer material to improve the mounting workability. In addition, about the attachment structure
to the vehicle 2 of the secondary vibration part 5, and the structure of the exciter 3, it is the same
as 1st Embodiment, The description is abbreviate | omitted.
[0033]
As shown in FIG. 7, the mounting member 10C is composed of a buffer material 12C formed in a
substantially rectangular shape, and a bracket 11 fixed to one surface of the buffer material 12C
by adhesion or the like. Two bushings (attachment means) 20 are integrally formed with the
shock absorbing material 12 on the other surface of the shock absorbing material 12C. The bush
portions 20 are provided near both longitudinal ends of the shock absorbing material 12C. The
bush portion 20 is formed of a bush head 21 and a bush shaft portion 22. The bush head 21 is
formed in a substantially conical shape so that the neck 23 has a diameter larger than that of the
tip portion 24.
[0034]
In the secondary vibration unit 5, a bush insertion hole 25 for press-fitting the bush unit 20 and
attaching the exciter 3 to the secondary vibration unit 5 via the shock absorbing material 12B is
formed. The bush shaft portion 22 of the bush portion 20 is formed to have substantially the
same size as the bush insertion hole 25, and when the bush head 21 is pressed into the bush
insertion hole 25 and penetrated, the bush shaft portion in the bush insertion hole 25 22 is fitted
and held in a state where the neck portion 23 of the bush portion 20 is hooked to the secondary
vibration portion 5.
11-05-2019
12
[0035]
The exciter 3 is attached to the surface of the bracket 11 formed to have substantially the same
size as the cushioning material 12C and opposite to the surface fixed to the cushioning material
12C. That is, the exciter 3 is fixed to the shock absorbing material 12C via the bracket 11. The
bracket 11 plays a role of preventing the shock absorber 12B from bending when the exciter 3
vibrates and the vibration can not be sufficiently transmitted to the secondary vibration unit 5.
[0036]
According to these configurations, the bush portion 20 is integrally formed on the shock
absorbing material 12C, and the exciter 3 is easily subjected to the secondary vibration portion
by press-fitting the bush portion 20 into the bush insertion hole 25 formed in the secondary
vibration portion 5. 5 can be attached, and the attachment workability of the exciter 3 to the
secondary vibration unit 5 can be improved. Further, since the shock absorbing material 12C to
which the exciter 3 is fixed can be fixed to the secondary vibration unit 5 by the bush portion 20
integrally formed with the shock absorbing material 12C, the vibration according to the high
range component generated by the exciter 3 Can be absorbed and dampened by the shock
absorbing material 12C, and furthermore, vibration corresponding to the low range component
can be directly transmitted to the secondary vibration unit 5 via the shock absorbing material
12C and the bush portion 20. , You can play the sound of the bass range with expansion.
[0037]
Fifth Embodiment In the mounting member 10B of the third embodiment and the mounting
member 10C of the fourth embodiment, when the exciter 3 vibrates in the bracket 11, the shock
absorbing material 12B is curved to cause secondary vibration. The bracket 11 is required to
have a predetermined strength and is made of an iron plate or a resin material having a thickness
which can ensure the strength, since the structure is provided to prevent the part 5 from being
unable to be transmitted sufficiently. It is difficult to reduce the weight or thickness of the
mounting members 10B and 10C of the exciter 3. The fifth embodiment is intended to reduce the
weight or thickness of the mounting member by eliminating the reinforcing bracket 11. In
addition, about the attachment structure to the vehicle 2 of the secondary vibration part 5, and
the structure of the exciter 3, it is the same as 1st Embodiment, The description is abbreviate |
11-05-2019
13
omitted.
[0038]
As shown in FIGS. 8A, 8B, and 8C, the mounting member (mounting means) 10D has a base
portion 40 formed of a buffer material such as a resilient rubber material, and a slide fixing
portion 41. And The base portion 40 and the slide fixing portion 41 are each formed in a
substantially rectangular shape, and are integrally formed so that each side is substantially
parallel. A slide groove 42 is formed between the base portion 40 and the slide fixing portion 41,
and the attachment member 10D is formed to have a substantially I-shaped cross section as
shown in FIG. 8B. The exciter 3 is attached and fixed to the surface of the base 40 opposite to the
surface on which the slide fixing portion 41 is provided by adhesion or the like.
[0039]
The exciter 3 is mounted by fixing the mounting member 10D to the secondary vibration unit 5
fixed to the vehicle frame 6 of the vehicle 2. The width W1 of the base portion 40 of the
mounting member 10D is formed to be substantially the same as the width W3 of the secondary
vibration portion 5. Thereby, the vibration corresponding to the high range component
generated by the exciter 3 can be absorbed and attenuated by the buffer material 12B, and
furthermore, the vibration according to the low range component can be directly transmitted to
the secondary vibration unit 5 , You can play the sound of the bass range with expansion.
[0040]
As shown in FIG. 9A, the secondary vibration unit 5 is formed with a cutout hole 36 for inserting
and fixing the attachment member 10D to the secondary vibration unit 5 by sliding. The cutout
hole 36 includes an insertion portion 43 and a slide portion 44. A stopper 45 is provided near
the end opposite to the end where the insertion portion 43 of the slide portion 44 is provided.
[0041]
FIG. 9B is a cross-sectional view taken along line b-b of FIG. As shown in FIG. 9B, the secondary
11-05-2019
14
vibration unit 5 is bent obliquely at the portion where the insertion portion 43 is provided, and
the height H2 of the bent portion is the slide fixing portion of the attachment member 10D. The
height H1 is substantially equal to or slightly higher than the height H1. In addition, the width
W4 of the slide portion 44 of the secondary vibration portion 5 is formed to be substantially the
same as or slightly smaller than the width W2 of the slide groove 42 of the attachment member
10D. The slide fixing portion 41 of the mounting member 10D is inserted above the cutout hole
36 through the insertion portion 43 in the arrow direction in FIG. The mounting member 10D is
slide-inserted to the stopper 45 with the slide groove 42 sandwiching both sides of the cutout
hole 36. As a result, as shown in FIG. 8C, the attachment member 10D is attached to the
secondary vibration unit 5 in a state in which the secondary vibration unit 5 is sandwiched
between the slide fixing unit 41 and the base unit 40.
[0042]
According to this configuration, the secondary vibration unit 5 plays the role of a reinforcing
plate of the mounting member 10D formed of a shock absorbing material such as elastic rubber
material, so that the vibration of the exciter 3 is formed of shock absorbing material. The
curvature of the mounting member 10D can be prevented, and the weight and thickness of the
mounting member can be reduced by eliminating the bracket as the reinforcing plate. Further,
since the exciter 3 can be attached to the secondary vibration unit 5 by slidingly inserting the
attachment member 10D into the cutout hole 36, the attachment workability of the exciter 3 can
be improved.
[0043]
Sixth Embodiment In the fourth embodiment, the two bush portions 20 are integrally formed in
the shock absorbing material 12C, and the bush portion 20 is press-fit into the bush insertion
hole 25 formed in the secondary vibration portion 5, and the exciter 3 is configured to be fixed
to the secondary vibration unit 5. The sixth embodiment is intended to reduce the size of the
mounting member by making one bush part. In addition, about the attachment structure to the
vehicle 2 of the secondary vibration part 5, and the structure of the exciter 3, it is the same as
1st Embodiment, The description is abbreviate | omitted.
[0044]
11-05-2019
15
As shown in FIG. 10, the mounting member 10E is composed of a shock absorbing material 12D
and a bracket 11D. As shown in FIG. 10A, the cushioning material 12D and the bracket 11D are
formed in a substantially disk shape having a diameter substantially the same as the diameter of
the exciter 3. The exciter 3 is attached to the bracket 11D and fixed to the buffer 12D via the
bracket 11D. The cushioning material 12D, the bracket 11D, and the exciter 3 are fixed to each
other by bonding or the like.
[0045]
As shown in FIG. 10B, a bush portion (attachment means) 20D is provided substantially at the
center of the disk-shaped cushioning material 12D. The bush portion 20D is formed of a bush
head 21D and a bush shaft portion 22D, and the bush head 21D is formed in a substantially
conical shape such that the neck 23D has a diameter larger than that of the tip portion 24D. In
the secondary vibration unit 5, a bush insertion hole (not shown) for inserting the bush unit 20D,
sandwiching the shock absorbing material 12D therebetween, and attaching the exciter 3 to the
secondary vibration unit 5 is formed. When attaching the exciter 3 to the secondary vibration
unit 5, holding the bracket 11D at a point X in FIG. 9, the bush head 21D is pushed into the bush
insertion hole and penetrated. When the bush head 21D penetrates the bush insertion hole, the
bush shaft portion 22D is fitted into the bush insertion hole, and the neck portion 23D of the
bush portion 20D is held by the secondary vibration portion 5 in a hooked state.
[0046]
The bush portion 20D is not only configured to be pushed into a bush insertion hole (not shown)
of the secondary vibration portion 5, but also is a cutout formed in the secondary vibration
portion 5 in an appropriate shape as in the fifth embodiment described above. It may be
configured to slide into the hole.
[0047]
Further, as shown in FIG. 10C, on the surface of the cushioning material 12D opposite to the
surface on which the bush portion 20D is provided, a convex portion 46 fitted to the inner
periphery of the exciter 3 is provided. The convex portion 46 may be inserted into the exciter 3
and provided.
The bracket 11D is provided with a hole through which the convex portion 46 passes. The
11-05-2019
16
convex portion 46 causes the shock absorbing material 12D to hit the plate 33 inside the exciter
3 before the pole 31 hits the voice coil bobbin (not shown) provided inside the exciter 3 when
the pole 31 is pushed. It is configured. According to this configuration, when the exciter 3 is to
be attached to the secondary vibration unit 5, the attachment operation is complicated, and even
if the pole 31 of the exciter 3 is pressed instead of the point X portion of the bracket 11D. The
possibility that the voice coil bobbin hits the pole 31 and a problem occurs in the exciter 3 can
be prevented.
[0048]
Seventh Embodiment In the fourth embodiment, the fifth embodiment, and the sixth embodiment,
the exciter 3 is inserted into the back side of the secondary vibration unit 5, that is, the ceiling
panel 4 side, so that the exciter 3 becomes a secondary Although the configuration is such that
the mounting member is attached to the vibrating portion 5, the mounting member may not be
provided behind the secondary vibrating portion 5 due to space of the vehicle. In the seventh
embodiment, a mounting structure of the exciter 3 in the case where the mounting member can
not be provided on the ceiling panel 4 side from the secondary vibration unit 5 is provided. In
addition, about the attachment structure to the vehicle 2 of the secondary vibration part 5, and
the structure of the exciter 3, it is the same as 1st Embodiment, The description is abbreviate |
omitted.
[0049]
As shown in FIG. 11, the mounting member 10F is composed of a shock absorbing material 12E
and a bracket 11E. As shown in FIG. 11A, the cushioning material 12E and the bracket 11E are
each formed in a substantially rectangular shape having substantially the same dimensions, and
an attachment hole 47 is provided in the vicinity of the center on both end sides in the
longitudinal direction. The exciter 3 is attached and fixed to the approximate center of the
bracket 11E by bonding or the like. As shown in FIG. 11B, in the secondary vibration portion 5, a
dowel 48 is formed at a position corresponding to the mounting hole 47 of the mounting
member 10F in accordance with the mounting position of the exciter 3. The dowels 48 may be
configured integrally with the secondary vibration unit 5.
[0050]
11-05-2019
17
The exciter 3 is fixed to the secondary vibration unit 5 by inserting and fixing the mounting hole
47 of the mounting member 10F to the dowel 48 while sandwiching the shock absorbing
material 12E between the bracket 11E and the secondary vibration unit 5 . According to this
configuration, the vibration corresponding to the high range component generated by the exciter
3 is attenuated by the buffer 12E, and the vibration corresponding to the low range component
generated by the exciter 3 is directly transmitted via the buffer 12E. The sound can be
transmitted to the next vibration unit 5 and the sound in the extended low-pitched range can be
reproduced. Further, it is possible to adjust various sound quality by freely changing the material
(hardness) and shape of the shock absorbing material 12E. Further, by providing the dowels 48
on the interior material 9 of the vehicle 2, the exciter 3 is attached to the interior material 9 by
the same fixing method, and the interior material 9 is vibrated using the interior material 9 as a
diaphragm. It is also possible to reproduce the sound of the range component.
[0051]
DESCRIPTION OF SYMBOLS 1 Bass sound reproduction apparatus 2 Vehicle 3 Exciter 5
Secondary vibration part (diaphragm) 6 Vehicle frame 10D mounting member (mounting means)
11 bracket 12 shock absorbing material 20, 20D bush part (mounting means)
11-05-2019
18
Документ
Категория
Без категории
Просмотров
0
Размер файла
32 Кб
Теги
jp2012160781
1/--страниц
Пожаловаться на содержимое документа