JP2022186385A - On-vehicle subwoofer unit - Google Patents

Abstract

[Problem] To provide an in-vehicle subwoofer unit that can be made compact and that ensures sufficient box capacity while preventing it from occupying too much space inside the vehicle. [Solution] An in-vehicle subwoofer unit 100 comprises a box body 110 and a woofer 120 provided in the box body. The box body has a connection port 113 for connecting the internal space of the box body to the internal space of a structural part of the vehicle body. The in-vehicle subwoofer unit is placed in a luggage space of the vehicle body and is connected to a lower back panel of the vehicle body. [Effect] As a result, the internal space of the in-vehicle subwoofer unit and the internal space of the lower back panel are integrated while the in-vehicle subwoofer unit is contained within the luggage space, ensuring sufficient box capacity to output low-frequency sounds. [Selected Figure] Figure 2

Description

The present invention relates to a vehicle-mounted subwoofer unit.

Patent Literature 1 listed below discloses a speaker device for a subwoofer placed on a seat cushion.

JP-A-2004-330951

However, in the technique disclosed in Patent Document 1, the housing needs to be enlarged in order to secure a sufficient box capacity, and there is a risk that the speaker device will occupy the space inside the vehicle.

In order to solve the above-described problems, an in-vehicle subwoofer unit according to one embodiment includes a box and a woofer provided in the box, the box having an internal space of a vehicle body. It has a connection port for connecting to the internal space of the structural part.

According to the in-vehicle subwoofer unit according to one embodiment, the in-vehicle subwoofer unit can be miniaturized, and a sufficient box capacity can be obtained while suppressing the space inside the vehicle from being occupied by the in-vehicle subwoofer unit. can be ensured.

1 is an external perspective view of an in-vehicle subwoofer unit according to one embodiment, viewed obliquely from above; FIG. 1 is an external perspective view of an in-vehicle subwoofer unit according to one embodiment, viewed obliquely from below; FIG. Sectional view of an in-vehicle subwoofer unit according to one embodiment FIG. 2 is an external perspective view of an in-vehicle subwoofer unit and a lower back panel according to one embodiment, viewed obliquely from above; FIG. 2 is an external perspective view of an in-vehicle subwoofer unit and a lower back panel according to one embodiment, as viewed obliquely from below; Sectional view of an in-vehicle subwoofer unit and a lower back panel according to one embodiment FIG. 2 is a view showing an installation example of an in-vehicle subwoofer unit according to one embodiment from the outside of the vehicle; FIG. 2 is a diagram showing an installation example of an in-vehicle subwoofer unit according to one embodiment from the inside of a vehicle; FIG. 2 is a diagram showing an example of output characteristics of an in-vehicle subwoofer unit according to one embodiment; FIG. 2 is a diagram showing an example of output characteristics of an in-vehicle subwoofer unit according to one embodiment;

An embodiment of the present invention will be described below with reference to the drawings.

(Configuration of in-vehicle subwoofer unit 100)
FIG. 1 is an external perspective view of an in-vehicle subwoofer unit 100 according to one embodiment, viewed obliquely from above. FIG. 2 is an external perspective view of the in-vehicle subwoofer unit 100 according to one embodiment, viewed obliquely from below. FIG. 3 is a cross-sectional view of an in-vehicle subwoofer unit 100 according to one embodiment.

The in-vehicle subwoofer unit 100 shown in FIGS. 1 to 3 is mounted in various vehicles (eg, gasoline engine vehicles, diesel engine vehicles, hybrid vehicles, electric vehicles, etc.).

The in-vehicle subwoofer unit 100 is connected to audio equipment mounted in the vehicle, and mainly outputs low-range sounds in response to sound signals supplied from the audio equipment.

In this embodiment, the in-vehicle subwoofer unit 100 is arranged in the luggage space 13 of the vehicle body 10 and connected to the lower back panel 200 of the vehicle body 10 . As a result, the vehicle subwoofer unit 100 accommodates the vehicle subwoofer unit 100 in the luggage space 13, and the internal space (the internal space 111 described later) of the vehicle subwoofer unit 100 and the lower back panel 200 (internal space 200A, which will be described later) are integrated with each other, and a box capacity sufficient for outputting low-frequency sound can be secured.

In this embodiment, for the sake of convenience, the direction corresponding to the front-rear direction of the vehicle is defined as the front-rear direction (X-axis direction), the direction corresponding to the left-right direction of the vehicle is defined as the left-right direction (Y-axis direction), and the vertical direction of the vehicle is defined as the The corresponding direction is the vertical direction (Z-axis direction).

As shown in FIGS. 1 to 3, vehicle subwoofer unit 100 includes box 110 and woofer 120 .

<Box 110>
The box 110 is a box-shaped member made of resin (for example, made of PP (polypropylene)) and having a closed internal space 111 (see FIG. 3). The box 110 is configured to be split into two parts, an upper case portion 110A and a lower case portion 110B. The box body 110 has an upper case portion 110A on the upper side (positive side of the Z axis) and a lower case portion 110B on the lower side (negative side of the Z axis), which are fitted together with a plurality of screws. By being screwed and fixed, it becomes box-shaped as shown in FIGS.

The box 110 has an outer shape according to the installation location of the box 110 . For example, in this embodiment, the box 110 is installed in the luggage space 13 of the vehicle body 10 , so it has an outer shape that fits in the excess space 13A of the luggage space 13 .

For example, the box 110 has a longitudinal shape in which the longitudinal direction (X-axis direction) is the longitudinal direction and the lateral direction (Y-axis direction) is the lateral direction, depending on the spatial shape of the surplus space 13A of the luggage space 13. It is a thing.

Further, for example, the box 110 is relatively thin in the vertical direction (Z-axis direction) according to the spatial shape of the extra space 13A of the luggage space 13 .

Further, for example, the side wall on the right side (Y-axis positive side) of the box 110 has a concave portion 110C that is recessed inward so as to avoid installations or structures in the luggage space 13. It's becoming

Further, for example, the left side wall (Y-axis positive side) of the box 110 has a shape that is partially curved along the left side (Y-axis positive side) inner wall surface of the luggage space 13 . .

As a result, the box 110 can effectively utilize the surplus space 13A of the luggage space 13, that is, can secure the largest possible capacity without changing the design of the luggage space 13, and the luggage space 13 can be Can be installed.

In addition, a plurality of mounting portions 116 are provided on the side wall portion on the rear side (X-axis negative side) of the box 110 so as to protrude rearward (X-axis negative direction). A screw 117 for screwing and fixing the mounting portion 116 to the front surface 201A of the lower back panel 200 is provided through each of the plurality of mounting portions 116 in the front-rear direction (X-axis direction). .

In addition, one mounting portion 116 is provided so as to protrude rightward (positive Y-axis direction) from the right side wall portion (positive Y-axis side) of the box 110 (lower case portion 110B). . A screw 117 for screwing and fixing the one mounting portion 116 to the inner bottom surface of the luggage space 13 is provided through the one mounting portion 116 in the vertical direction (Z-axis direction). .

In the present embodiment, the box 110 is shaped to fit in the surplus space 13A of the luggage space 13, so that the internal space 111 of the box 110 has a capacity of 6.5 [L].

A connection port 113 is provided in a side wall portion on the rear side (X-axis negative side) of the box 110 . The connection port 113 is connected to the internal space 111 of the box 110 . Connection port 113 is connected to opening 202 formed in front surface 201A of lower back panel 200 of vehicle body 10 . Thereby, connection port 113 can connect internal space 111 of box 110 to internal space 200A of lower back panel 200 . In the present embodiment, connection port 113 has a horizontally long rectangular shape according to the shape of opening 202 of lower back panel 200, but the shape of connection port 113 is not limited to this.

A ring-shaped cushioning member 114 is provided along the periphery of the connection port 113 in the box 110 . The cushioning member 114 is sandwiched between the peripheral edge of the connection port 113 and the peripheral edge of the opening 202 of the lower back panel 200 to adhere to the peripheral edge of the opening 202 . It is possible to increase the sealing degree of the connection part with.

<Woofer 120>
The woofer 120 is a large-diameter speaker that mainly outputs low-frequency sound. The woofer 120 is provided so as to face downward (Z-axis negative direction) with respect to the bottom surface of the box 110 . Specifically, as shown in FIGS. 2 and 3, the bottom surface of the lower case portion 110B of the box 110 is formed with a speaker placement portion 112 that is recessed upward. A circular speaker opening 112A (see FIG. 3) is formed in the ceiling surface of the speaker placement portion 112. As shown in FIG. The woofer 120 is fitted into the speaker opening 112A from below the speaker opening 112A with the diaphragm 121 facing downward. The woofer 120 is screwed and fixed to the ceiling surface of the speaker placement section 112 with a plurality of screws in the frame section 122 .

The woofer 120 is connected to a cable (not shown) via a connector 115 installed on the surface of the upper case portion 110A of the box 110, and further via the cable to audio equipment mounted on the vehicle. be. Thereby, the woofer 120 is driven by the sound signal supplied from the audio equipment.

The woofer 120 includes, for example, a large-diameter disc-shaped diaphragm 121, a metal frame-shaped frame 122 surrounding the diaphragm 121, a magnet (not shown), a voice coil (not shown), and the like. The diaphragm 121 vibrates according to the sound signal, thereby outputting a sound according to the sound signal. In this embodiment, the woofer 120 has a diameter suitable for outputting low-frequency sound (eg, 200 mm).

(Example of connection of in-vehicle subwoofer unit 100)
FIG. 4 is an external perspective view of the in-vehicle subwoofer unit 100 and the lower back panel 200 according to one embodiment, viewed obliquely from above. FIG. 5 is an external perspective view of the in-vehicle subwoofer unit 100 and the lower back panel 200 according to one embodiment, viewed obliquely from below. FIG. 6 is a cross-sectional view of an in-vehicle subwoofer unit 100 and a lower back panel 200 according to one embodiment.

As shown in FIGS. 4 and 5, the lower back panel 200 is a structural portion forming part of the vehicle body 10, and is made of metal and has a longitudinal shape whose longitudinal direction is the left-right direction (Y-axis direction). It is a panel-shaped member.

As shown in FIGS. 4 to 6, a tubular portion extending in the left-right direction (Y-axis direction) from the left end to the right end of the lower back panel 200 is provided on the upper portion of the lower back panel 200. 201 is formed. Accordingly, a large-capacity internal space 200A extending in the left-right direction (Y-axis direction) is formed above the lower back panel 200 . As shown in FIG. 6, the internal space 200A has a substantially rectangular cross-sectional shape along the XZ plane.

As shown in FIGS. 4 to 6, in vehicle-mounted subwoofer unit 100, the peripheral edge of connection port 113 provided in the side wall on the rear side (X-axis negative side) of box 110 is connected to lower back panel 200. It is connected to the front surface 201A of the lower back panel 200 by abutting against the peripheral edge of the opening 202 formed at the left end of the front surface 201A of the cylindrical portion 201 of the lower back panel 200 .

Then, the in-vehicle subwoofer unit 100 is provided with a plurality of screws 117 passing through each of the mounting portions 116 protruding rearward from the side wall portion on the rear side (X-axis negative side) of the box 110. It is fixed to the front surface 201A of the lower back panel 200 by screwing.

At this time, the cushioning member 114 provided on the peripheral edge of the connection port 113 is pressed against the peripheral edge of the opening 202 and is brought into close contact with the peripheral edge of the opening 202 . The sealing degree of the connection part with is improved.

As a result, the in-vehicle subwoofer unit 100 integrates the internal space 111 of the box 110 and the internal space 200A of the lower back panel 200 through the connection port 113 as shown in FIG. It is designed to have enough box capacity to output.

In other words, the in-vehicle subwoofer unit 100 reduces the size of the box 110 so that it fits in the surplus space 13A of the luggage space 13, while using the inner space 200A of the lower back panel 200 as part of the box capacity. The inner space 200</b>A of the lower back panel 200 can compensate for the lack of the box capacity sufficient for outputting sounds in the low range.

Therefore, according to the in-vehicle subwoofer unit 100 according to one embodiment, the in-vehicle subwoofer unit 100 can be made smaller, and the space in the vehicle is prevented from being occupied by the in-vehicle subwoofer unit. , enough box capacity can be secured.

For example, in the present embodiment, 6.5 [L] is secured as the internal volume of the internal space 111 of the box 110 . Further, in the present embodiment, 13.0 [L] is ensured as the internal volume of the internal space 200A of the lower back panel 200 . As a result, in this embodiment, the size of the box 110 can be reduced, and the box capacity of 19.5 [L], which is a large capacity suitable for outputting sounds in the low range, can be secured.

In some cases, the lower back panel 200 is formed with a plurality of relatively small openings apart from the opening 202 to which the in-vehicle subwoofer unit 100 is connected. In this case, the plurality of openings are preferably closed with a sealing material, a rubber plug, or the like so that the sound does not leak out from the plurality of openings.

Further, the opening 202 of the lower back panel 200 may be an existing opening or may be newly formed. In the latter case, the shape of the opening 202 of the lower back panel 200 may be formed to match the shape of the opening 113 of the box 110 . In the former case, the opening shape of connection port 113 of box 110 may be formed to match the opening shape of opening 202 of lower back panel 200 .

Further, the box 110 is not limited to one having an inner space 111 with an internal volume of 6.5 [L], and may have an internal space 111 with an internal volume of 4.0 [L], for example. In this case, by connecting the box body 110 to the lower back panel 200, the box body 110 can be further miniaturized while securing a box capacity of 17.0 [L], which is a large capacity suitable for outputting sounds in the low range. can.

(Installation example of in-vehicle subwoofer unit 100)
FIG. 7 is a view showing an installation example of the in-vehicle subwoofer unit 100 according to one embodiment from the outside of the vehicle. FIG. 8 is a diagram showing an installation example of the in-vehicle subwoofer unit 100 according to one embodiment from the inside of the vehicle.

As shown in FIG. 7, the lower back panel 200 extends in the left-right direction (Y-axis direction) from the left end to the right end of the vehicle body 10 below the rear door opening 11 of the vehicle body 10 (negative Z-axis side). ).

7 and 8, a luggage space 13 is provided in front of the lower back panel 200 of the vehicle body 10 (positive side of the X axis) and rearward of the rear seat 12 (negative side of the X axis). there is The luggage space 13 stores, for example, a spare tire, tools, and the like.

Moreover, as shown in FIGS. 7 and 8, the left end of the luggage space 13 has an extra space 13A. The surplus space 13A is a space that does not have parts, structures, and the like that hinder installation of the vehicle-mounted subwoofer unit 100 .

Further, as shown in FIGS. 7 and 8 , a flat luggage tray 14 is placed on the luggage space 13 . The luggage tray 14 can cover the luggage space 13 and flatten the upper part of the luggage space 13 .

As shown in FIGS. 7 and 8, vehicle-mounted subwoofer unit 100 is arranged in surplus space 13A of luggage space 13 so that woofer 120 faces downward, and is connected to lower back panel 200. As shown in FIGS. The box 110 of the in-vehicle subwoofer unit 100 is formed to have an outer shape that fits in the surplus space 13A according to the spatial shape of the surplus space 13A. Therefore, the vehicle-mounted subwoofer unit 100 can be installed in the luggage space 13 without changing the design of the internal structure of the luggage space 13 .

Further, as shown in FIGS. 7 and 8, the in-vehicle subwoofer unit 100 can be accommodated in the surplus space 13A below the luggage tray 14, so that the flatness of the luggage tray 14 is not hindered, and the luggage tray can be It can be installed in the luggage space 13 without occupying the space in the vehicle above 14. - 特許庁Furthermore, the vehicle-mounted subwoofer unit 100 can be installed in the luggage space 13 so as not to be visually recognized from the outside by the luggage tray 14 .

(Example of characteristics of output sound)
9 and 10 are diagrams showing an example of characteristics of the output sound of the in-vehicle subwoofer unit 100 according to one embodiment. FIG. 9 shows the frequency-sound pressure characteristics of the output sound when the in-vehicle subwoofer unit 100 is not connected to the lower back panel 200. FIG. FIG. 10 shows the frequency-sound pressure characteristics of the output sound when the in-vehicle subwoofer unit 100 is connected to the lower back panel 200. FIG.

In-vehicle subwoofer unit 100 according to one embodiment extends from woofer 120 installed on the bottom surface of box 110 downward (Z-axis negative direction) to box 110 when a sound signal is supplied from an audio device. It can output sound in the low range.

At this time, the vehicle-mounted subwoofer unit 100 according to one embodiment connects the internal space 200A of the lower back panel 200 to the internal space 111 of the box 110, and has a sufficient box capacity (for example, 19.5 [L]). By ensuring , it is possible to increase the sound pressure of the sound in the low frequency range without increasing the size of the box 110, and to suppress unnecessary reverberation when the sound in the low frequency range is generated.

For example, as shown in FIGS. 9 and 10, when the in-vehicle subwoofer unit 100 according to one embodiment is connected to the lower back panel 200, compared to when it is not connected to the lower back panel 200, The sound pressure of sounds in the low range of 100 Hz or less can be sufficiently improved.

As described above, the vehicle-mounted subwoofer unit 100 according to one embodiment includes the box 110 and the woofer 120 provided in the box 110. The box 110 is the internal space of the box 110. It has a connection port 113 for connecting 111 to the internal space of the structural part of the vehicle body.

As a result, the in-vehicle subwoofer unit 100 according to one embodiment can reduce the size of the box 110 , thereby preventing the vehicle interior space from being occupied by the in-vehicle subwoofer unit 100 . In addition, the in-vehicle subwoofer unit 100 according to one embodiment integrates the internal space 111 of the box 110 with the internal space of the structural part of the vehicle body through the connection port 113, thereby outputting low-frequency sound. Enough box capacity can be secured for

In addition, in the in-vehicle subwoofer unit 100 according to one embodiment, the connection port 113 is connected to the opening 202 of the lower back panel 200 of the vehicle body 10 so that the inner space 111 of the box 110 can be used as a lower back. It connects to the internal space 200A that the panel 200 has.

As a result, the in-vehicle subwoofer unit 100 according to one embodiment integrates the internal space 111 of the box 110 and the internal space 200A of the lower back panel 200 through the connection port 113, so that the low-range sound is It is possible to secure enough box capacity to output

In addition, in the in-vehicle subwoofer unit 100 according to one embodiment, the connection port 113 has an opening shape that matches the opening 202 of the lower back panel 200 .

Thus, in vehicle subwoofer unit 100 according to one embodiment, internal space 111 of box 110 and internal space 200A of lower back panel 200 can be efficiently integrated.

Further, in the in-vehicle subwoofer unit 100 according to one embodiment, the box 110 is installed in the luggage space 13 provided on the front side of the lower back panel 200 in the vehicle body 10 .

As a result, the in-vehicle subwoofer unit 100 according to one embodiment can be installed in the vehicle body 10 so as not to occupy a space in the vehicle other than the luggage space 13 (for example, a living space for passengers, a luggage room, etc.) and to be inconspicuous. can be installed in

In addition, in the in-vehicle subwoofer unit 100 according to one embodiment, the box 110 has an outer shape that fits in the surplus space 13A of the luggage space 13 .

As a result, the in-vehicle subwoofer unit 100 according to the embodiment can be installed in the luggage space 13 without changing the design of the internal structure of the luggage space 13, so that an increase in installation costs can be suppressed. can.

In addition, since the in-vehicle subwoofer unit 100 according to one embodiment can be installed in the luggage space 13 without protruding from the luggage space 13, the space inside the vehicle other than the luggage space 13 (for example, the passenger's living space, (luggage room, etc.) will not be occupied.

In addition, the vehicle-mounted subwoofer unit 100 according to one embodiment includes a cushioning member 114 provided along the peripheral edge of the connection port 113 .

As a result, the in-vehicle subwoofer unit 100 according to one embodiment can bring the connection port 113 into close contact with the connection port 113, thereby suppressing vibration transmitted from the connection port 113 to the lower back panel 200 and suppressing sound leakage from the connection port 113. , and the like.

In addition, in the in-vehicle subwoofer unit 100 according to one embodiment, the capacity of the internal space 111 of the box 110 is less than half the capacity of the internal space 200A of the lower back panel 200 .

As a result, the in-vehicle subwoofer unit 100 according to one embodiment can reduce the size of the box 110, while utilizing the internal space 200A to achieve a box capacity suitable for sufficiently outputting low-frequency sound. can be ensured.

Further, in vehicle-mounted subwoofer unit 100 according to one embodiment, the total capacity of internal space 111 of box 110 and internal space 200A of lower back panel 200 is 17 liters or more.

As a result, the in-vehicle subwoofer unit 100 according to one embodiment can reduce the size of the box 110, while utilizing the internal space 200A to achieve a box capacity suitable for sufficiently outputting low-frequency sound. can be ensured.

Although the preferred embodiments of the present invention have been described in detail above, the present invention is not limited to these embodiments, and various modifications or Change is possible.

For example, the in-vehicle subwoofer unit 100 according to one embodiment may be connected not only to the lower back of the vehicle body but also to other structural parts of the vehicle body as long as they have at least an internal space.

REFERENCE SIGNS LIST 10 vehicle body 11 rear door opening 12 rear seat 13 luggage space 13A surplus space 14 luggage tray 100 in-vehicle subwoofer unit 110 box 110A upper case portion 110B lower case portion 110C recess 111 internal space 112 speaker placement portion 112A speaker opening 113 Connection port 114 Cushioning member 115 Connector 116 Mounting part 117 Screw 120 Woofer 121 Diaphragm 122 Frame part 200 Lower back panel (structural part)
200A internal space 201 cylindrical portion 201A front surface 202 opening

Claims (8)

a box and
a woofer provided in the box,
The box is
An in-vehicle subwoofer unit, comprising a connection port for connecting an internal space of the box to an internal space of a structural part of a vehicle body. The connection port is
2. The in-vehicle sub according to claim 1, wherein the interior space of the box is connected to the interior space of the lower back panel by being connected to the opening of the lower back panel of the vehicle body. woofer unit. The connection port is
3. The in-vehicle subwoofer unit according to claim 2, wherein the subwoofer unit has an opening shape that matches the opening of the lower back panel. The box is
4. The in-vehicle subwoofer unit according to claim 2, wherein the subwoofer unit is installed in a luggage space provided on the front side of the lower back panel in the vehicle body. The box is
5. The vehicle-mounted subwoofer unit according to claim 4, having an outer shape that fits in the surplus space of the luggage space. The in-vehicle subwoofer unit according to any one of claims 2 to 5, further comprising a cushioning member provided along the peripheral edge of the connection port. 7. The in-vehicle sub according to any one of claims 2 to 6, wherein the capacity of the internal space of the box is half or less of the capacity of the internal space of the lower back panel. woofer unit. The vehicle-mounted vehicle according to any one of claims 2 to 7, wherein the total capacity of the internal space of the box and the internal space of the lower back panel is 17 liters or more. subwoofer unit for.

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