JP3603284B2 - Vehicle speaker installation structure - Google Patents

Description

[0001]
[Industrial applications]
The present invention relates to an arrangement structure of a speaker mounted on a vehicle, and more particularly, to an arrangement structure of a speaker for a low-pitched sound which has a resonance tube.
[0002]
[Prior art]
The acoustic equipment mounted on vehicles is becoming more sophisticated. In particular, a vehicle equipped with a bass speaker having a resonance tube has recently been provided. By providing the bass speaker with the resonance tube attached thereto, there is an advantage that a heavy sound quality can be output with abundant volume.
Japanese Patent Laying-Open No. 4-5141 discloses a vehicle equipped with an acoustic device having such a speaker with a resonance tube. The disclosed device has a structure in which a speaker is arranged at a rear portion of a vehicle, the resonance tube is spirally formed, and a front end portion extends forward to provide an output portion at a front portion of the vehicle.
As described above, such a speaker device with a resonance tube can improve the sound quality especially in the low frequency range. However, in order to improve the performance in the low frequency range, a resonance tube is provided to amplify the vibration to increase the strong vibration. Need to occur. For this reason, it is inevitable that the volume and length required by the resonance cylinder become large and the acoustic device becomes large, which hinders downsizing of the vehicle.
The device disclosed in the above publication has a structure in which a speaker and a duct, that is, a resonance tube are arranged at a rear portion of a vehicle. However, in this case, there is a problem that a space in a trunk room is compressed.
[0003]
[Problem to be solved]
However, if the length and volume of the resonance tube are reduced, the performance of the speaker with the resonance tube is reduced, so that the intended purpose cannot be achieved.
SUMMARY OF THE INVENTION The present invention has been made in view of such circumstances, and it is an object of the present invention to provide a high-performance speaker-equipped loudspeaker arrangement structure that does not impair the compactness of a vehicle and effectively uses the space of the vehicle. I have.
[0004]
[Means for Solving the Problems]
The present invention is configured as follows to achieve the above object.
The vehicle speaker disposition structure according to the present invention, a speaker mounted on the vehicle,
A resonance tube connected to the speaker;
Instrument panel disposed in the vehicle width direction in front of the vehicle compartment,
The resonance tube is disposed so as to extend in the vehicle width direction in a space on the back side of the instrument panel when viewed from the vehicle interior side.
[0005]
In addition, a cushioning member for the knee is provided in front of the occupant to absorb the shock when the occupant hits the instrument panel, particularly in the event of a collision. The cushioning member is made of plastic or the like, but can be saved in space by forming this member in common with the resonance tube.
[0007]
[Action]
The loudspeaker according to the present invention is of a type having a resonance tube which is indispensable for pursuing a high-performance sound effect. Therefore, when mounting such a loudspeaker in a vehicle, it is necessary to overcome layout difficulties. There is. According to one aspect of the present invention, an elongated space can be effectively used by arranging the instrument panel in a space on the back side of the instrument panel, which has a relatively large layout, so as to extend in the vehicle width direction. In the conventional structure, the resonance tube is laid out close to the speaker amplifier tube in a structure in which the resonance tube is folded at the rear portion of the vehicle, so that there is a problem that the volume of the trunk room is compressed. However, by extending in the vehicle width direction behind the instrument panel as in the present invention, it is not necessary to provide a special large space for disposing the speaker device.
In addition, even when the resonance tube is arranged, it is sufficient to provide an elongated speaker, so that the degree of freedom of arrangement increases. As a result, a factor that hinders the performance of the resonance cylinder can be eliminated as much as possible, so that a high-performance speaker device can be provided.
In another aspect of the invention, the speakers are located in a dead space below the seat. The resonance cylinder is arranged along the tunnel so as to extend in the front-rear direction of the vehicle. By doing so, there is no need to change the layout of other devices by arranging the speakers, and it is possible to promote the downsizing of the vehicle regardless of the arrangement of the large and high-performance speaker devices. In particular, since the resonance cylinder is disposed so as to extend in the front-rear direction, a large and small space is not required, an elongated space is sufficient, and the layout can be easily performed.
[0008]
Furthermore, since the dead space of such a vehicle is effectively used, it is also possible to provide both a front seat occupant resonance tube and a rear seat occupant resonance tube. The effect can be further enhanced, and a high-quality on-vehicle acoustic equipment can be provided while maintaining a compact vehicle.
[0009]
【Example】
Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.
FIG. 1 shows a conceptual diagram of a speaker 1 according to the present invention and resonance tubes 2 and 3 connected thereto. The loudspeaker 1 of this example is mounted as a part of the acoustic equipment of a vehicle in order to enhance the performance in the low frequency range, and has a cylindrical body 4 in the center and a conical taper on both sides. Output units 5 and 6 are provided. The resonance tubes 2 and 3 extend from the output units 5 and 6 in opposite directions. One resonance tube 2 has a length three times as long as the other resonance tube 3.
The distal ends of the resonance cylinders 2 and 3 are open, and constitute sound output units 7 and 8 for outputting sound. In the resonance tubes 2 and 3, sound waves output from both output units 5 and 6 are amplified by resonance and output from sound output units 7 and 8.
FIG. 15 is a perspective view showing a mounted state of the conventional speaker 1. As shown, the resonance tubes 2 and 3 extend from both sides of the speaker, but the longer resonance tube 2 extends to the resonance tube on the opposite side in the horizontal direction, and after being folded three times, extends upward and is opened. Have been. The shorter resonance tube 3 extends upward after extending one horizontal end, and is opened upward to the speaker 1 at a position opposite to the other open end 7.
[0010]
As described above, in the related art, the resonance tubes 2 and 3 are folded, and the speaker 1 and the resonance tubes 2 and 3 are integrated and laid out in one place. And this structure was arranged in the space just behind the rear seat of the vehicle rear. In this configuration, it is necessary to secure a large space for laying out the structure of the speaker 1 and the resonance tubes 2 and 3 in the trunk room, and there is a problem that the trunk room becomes narrow.
An arrangement structure of the speaker 1 and the attached resonance tubes 2 and 3 according to one embodiment of the present invention will be described with reference to FIGS.
The speaker 1 according to the present embodiment is disposed on the back side of an instrument panel 10 in front of a passenger compartment 9. A steering wheel 11 is disposed at the front of the vehicle, and a steering column 12 extends obliquely downward and forward from the steering wheel 11. A steering support member 13 is arranged in the vehicle width direction to support the steering column 12, and the steering column 12 is supported by the steering support member 13 by a bracket 14. A center stay 17 whose lower end is fixed to the upper surface of the tunnel portion 16 of the floor panel 15 is provided at a position near the middle of the steering support member 13 in the vehicle width direction. The stay 17 is supported from below. A dash panel 18 extending substantially vertically upward is provided at a front end of the floor panel 15, and an upper end of the dash panel 18 is connected to the cowl lower panel 20.
[0011]
Further, at the front of the vehicle compartment 9, an instrument panel 10 extends in the vehicle width direction so as to cover a lower portion of the steering column, and covers a front surface of the vehicle compartment. On the instrument panel 10, a display 21 of instruments is provided slightly above the steering column 12. An instrument upper panel 22 extending substantially horizontally forward is provided above the display section 21. A cowl box 24 is provided at the front end of the instrument upper panel 22 by a cowl upper panel 23. It is formed and supports the lower end of the windshield 25.
In the structure of the present example, the speaker 1 is arranged in a space behind the dash panel 18, that is, on the vehicle cabin side, behind the instrument panel 10, that is, on the front side and below the cowl lower panel 20. As shown in FIG. 4, the speaker 1 is located in front of the passenger seat, and a pair of resonance tubes 2 and 3 extend from both sides in the vehicle width direction. The longer resonance tube 2 extends from the output portion 5 of the speaker 1 once in the vehicle width direction, then extends rearward, further extends in the vehicle width direction, curves rearward near the side of the vehicle body, and extends to the position of the instrument panel. The sound output unit 7 is opened. On the other hand, the shorter resonance cylinder 3 once extends slightly in the vehicle width direction, then extends rearward along the side surface of the vehicle body, similarly to the position of the instrument panel 10, and is opened toward the passenger compartment. A sound output section 8 is provided.
[0012]
As shown in FIG. 4, the sound output section 7 of the resonance tube 2 is attached to the instrument panel 10 by a bracket 26.
The speaker 1 is supported on the dash panel 18 and the cowl lower panel 20 by brackets 27 and 28. Further, the resonance tubes 2 and 3 are supported on the instrument panel 10 by brackets 29, 30 and 31.
Another embodiment of the present invention will be described with reference to FIGS.
In the structure of the present example, a part of the long resonance tube 2 is configured to also serve as the steering support member 13. That is, the resonance tube 2 slightly extends in the horizontal direction from the output portion 5 of the speaker 1, bends backward, and is connected to the support member 13. Since the support member 13 is formed of a hollow pipe member, a resonance effect can be generated. On the left and right, another cylindrical member 34 is connected to the support member 13 near one flange fixed to the fender panel via the flanges 32 and 33, and the distal end thereof constitutes the sound output section 7. It has become. A baffle plate 35 is arranged inside the portion extending in the vehicle width direction beyond the connecting portion of the cylindrical member of the support member 13 so as to block the internal space, and blocks the propagation of sound waves in that direction.
[0013]
In this case, the support member 13 is supported by the bracket 36 near the open end.
Referring to FIGS. 7 and 8, there is shown still another embodiment of the present invention.
In the present example, the resonance tube is configured to also serve as a knee protector 37 provided behind the instrument panel 10. The knee protector 37 is disposed in front of the passenger seat and plays a role of reducing the impact force when the lower body of the occupant, particularly the knee, hits a member such as the instrument panel 10 in a collision or the like.
In the structure of the present example, an airbag device 38 is provided in a space between the instrument panel 10 and the instrument upper panel 22 behind the airbag lid 39 which forms a continuous plane with the instrument panel 10. It is installed in.
The knee protector 37 of this example is formed of a hollow member having a rectangular cross section as shown in FIG. Preferably, it is formed by molding plastic. In the configuration of the present example, this is achieved by forming a knee protector portion having the rectangular hollow cross section in a part of the resonance tube. That is, unlike the previous example, the longer resonance tube 2 extends outwardly in the vehicle width direction from the output portion 5 on the passenger seat side of the speaker 1 and then extends obliquely upward and rearward to bend and then extends to the opposite side in the vehicle width direction. It has reached near the side of the vehicle. After that, it is bent in a U-shape and opened rearward. The shorter resonance tube 3 extends from the output portion 6 on the driver's seat side in the vehicle width direction, curves backward, extends rearward and upward, and bends above the long resonance tube to be bent on the passenger side in the vehicle width direction. Extends. Thereafter, it extends downward in a U-shape and is opened rearward. As shown in FIG. 8, knee protectors 37 each composed of a pair of long and short resonance cylinders 23 are provided along the instrument panel 10 so as to be positioned vertically in two stages. The long resonance cylinder 2 extends beyond the driver's seat with a rectangular cross section as it is and reaches near the open end.
[0014]
In this configuration, it is not necessary to provide the knee protector 37 in particular, so that the space for the resonance tubes 2 and 3 and the knee protector 37 can be saved, and the number of parts can be reduced.
Referring to FIGS. 9 and 10, yet another embodiment of the present invention is shown.
In the configuration of the present example, the speaker 1 is arranged in a space below the passenger seat 40. In this case, the floor panel 15 below the passenger seat is provided with a cover 41 projecting upward and extending just below the seat, and the speaker 1 is arranged in a space between the cover 41 and the upper surface of the floor panel 15. The resonance cylinders 2 and 3 are disposed along both sides of a tunnel portion 16 extending in the front-rear direction while protruding from the center of the floor panel 15, and extend forward and along the rear surface of the instrument panel 10. It is open at a position below the column 12. With such an arrangement, the dead space below the seat can be effectively used, and the resonance tubes 2 and 3 can be arranged along the tunnel portion 16, so that the arrangement of other devices is not hindered. Since it is originally configured to project on the upper surface of the floor panel 15, there is no sense of incongruity due to the arrangement of the resonance tubes 2 and 3.
[0015]
Referring to FIGS. 11, 12, 13 and 14, yet another embodiment of the present invention is shown. In the configuration of the present example, the resonance cylinders 2 and 3 are further provided with resonance cylinders 42 and 43 extending rearward in addition to those of the previous example.
The rearwardly extending pair of resonance cylinders 42 and 43 are provided in order to give an excellent acoustic effect particularly to the occupants of the rear seats, and their sound output portions are provided near the intermediate level inside the center pillar on both sides. . The rearwardly extending resonance tubes 42 and 43 are connected to the opposite sides of the frontwardly extending resonance tubes 2 and 3 and extend rearward along the tunnel portion 16 to the kickup portion 45 in front of the kickup portion 45 of the floor panel 15. Along the lower part of the seats 40 and 44 in the vehicle width direction, the upper part curves upward and extends inside the structure of the center pillars 46 and 47 to be opened when reaching a predetermined level to form a sound output part.
In this configuration, a better sound effect can be obtained by utilizing the dead space as described above. As shown in FIG. 14, a switching damper 48 is provided inside the connection between the resonance cylinders 2, 43, 3, and 42, respectively, so that sound waves are transmitted to the front or rear resonance cylinders 2, 43 or 3, 42. Propagate selectively. In this case, as shown in FIG. 13, a short resonance tube 43 extending backward is connected to the long resonance tube 2 extending forward, and a long resonance tube 42 extending rearward is connected to the short resonance tube 3 extending forward. Thus, the total length of the resonance tubes before and after the connection to both output portions can be made equal, and the resonance tubes can be arranged in a well-balanced manner.
[0016]
【The invention's effect】
According to the present invention, by utilizing the space effectively as described above, the sound equipment for improving the bass range, which had to take a large space in the conventional structure, and the special space for the sound equipment can be minimized. Therefore, the layout can be made while reducing the size of the vehicle. That is, a speaker with a resonance tube requiring a predetermined capacity and length can be arranged without difficulty, so that a high-performance sound effect utilizing original characteristics can be enjoyed. In addition, since the degree of freedom also increases in the layout of the resonance cylinder, the performance does not decrease.
[Brief description of the drawings]
FIG. 1 is a conceptual diagram of a speaker and a resonance tube used in the present invention,
FIG. 2 is a front sectional view of a vehicle provided with a speaker and a resonance tube according to one embodiment of the present invention;
FIG. 3 is a perspective view of the speaker and the resonance tube of the embodiment of FIG. 2,
FIG. 4 is a sectional view showing a connection state between the resonance cylinder and the instrument panel of the embodiment of FIG. 2;
FIG. 5 is a front sectional view of a vehicle according to another embodiment of the present invention;
FIG. 6 is a perspective view of a speaker and a resonance tube according to the embodiment of FIG. 5,
FIG. 7 is a front sectional view of a vehicle according to still another embodiment of the present invention;
8 is a perspective view of a speaker and a resonance tube according to the embodiment of FIG. 7,
FIG. 9 is a front plan view of a vehicle according to still another embodiment of the present invention;
10 is a front sectional view of the vehicle according to the embodiment of FIG. 7;
FIG. 11 is a front plan view of a vehicle according to still another embodiment of the present invention;
12 is a front sectional view of the vehicle according to the embodiment of FIG. 11,
FIG. 13 is a perspective view showing an arrangement state of a speaker and a resonance tube in the embodiment of FIG. 11;
FIG. 14 is a sectional view showing the internal structure of the connecting portion of the resonance cylinder in the embodiment of FIG. 11;
FIG. 15 is a perspective view showing a state in which a conventional speaker and a resonance tube are provided.
[Explanation of symbols]
1 speaker, 2, 3 resonance tube, 5, 6 output unit, 7, 8 sound output unit,
10 instrument panel, 11 steering wheel, 12 steering column.

Claims (1)

A speaker mounted on the vehicle,
A resonance tube connected to the speaker;
Instrument panel disposed in the vehicle width direction in front of the vehicle compartment,
The resonance cylinder is disposed so as to extend in the vehicle width direction in a space on the back side of the instrument panel when viewed from the passenger compartment side,
A speaker arrangement structure for a vehicle, wherein the resonance tube forms a knee cushioning member arranged in front of an occupant.

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