Sound output structure

Abstract

To provide a sound output structure that realizes a simple and aesthetically excellent interior inside a vehicle while being capable of clearly transmitting sound.SOLUTION: A sound output structure formed between two structures provided in a vehicle includes: a duct 11 attached to a door trim 10 serving as a first structure, the duct 11 forming a space S1 with the door trim; a speaker 20 provided in the space S1 for outputting sound; and a seal member 30 attached to the door trim and having a tubular shape capable of contacting an instrument panel 100 serving as a second structure, the seal member 30 being formed with a cutout portion 33 in which a part of a second portion 32, which is one of penetration directions, is cut away. The door trim is formed with an opening 12 at a position facing the instrument panel 100 and at which the space S1 is formed, the hollow portion 30a of the seal member being in communication with the opening, and the cutout portion 33 being formed at a position facing a gap S2 formed by the door trim and the instrument panel 100.SELECTED DRAWING: Figure 3

Description

[Technical Field]

[0001] The present invention relates to a sound output structure. [Background technology]

[0002] As a structure for outputting sound into the cabin of a vehicle, a technology is known in which sound is output into the cabin from a speaker arranged in a vehicle door through an opening leading to the cabin (see, for example, Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 2019-202600 Summary of the Invention [Problem to be solved by the invention]

[0004] In Patent Document 1, the speaker itself, which is housed inside the door, is prevented from being seen by passengers, but because the speaker grill is visible to passengers, it is not possible to achieve a simple and stylish interior design for the vehicle, and because sound is output into the vehicle cabin through the speaker grill, there are cases where the sound cannot be transmitted clearly inside the vehicle.

[0005] The present invention has been made in consideration of the above, and aims to provide a sound output structure that can realize a simple and aesthetically pleasing interior design inside a vehicle and output clear sound. [Means for solving the problem]

[0006] The sound output structure of the present invention is a sound output structure formed between two structures provided in a vehicle, and comprises: a duct attached to a first structure and forming a space between the first structure; a speaker provided in the space and outputting sound; and a sealing material attached to either the first structure or the second structure, having a cylindrical shape that can abut against the other structure, and having a cutout portion cut out on one side of the penetration direction, wherein an opening penetrating the first structure is formed in the first structure at a position facing the second structure and where the space is formed, the hollow portion of the sealing material and the opening are connected, and the cutout portion is formed in a position facing the gap formed between the first structure and the second structure. [Effects of the Invention]

[0007] According to the present invention, it is possible to realize a simple and well-designed interior in the vehicle, and to transmit sound clearly to passengers, for example. [Brief explanation of the drawings]

[0008] [Figure 1] FIG. 1 is a schematic diagram showing the configuration of a vehicle equipped with a sound output structure according to an embodiment. [Figure 2] FIG. 2 is a plan view illustrating the configuration of the sound output structure according to the embodiment. [Figure 3] FIG. 3 is a cross-sectional view showing a configuration of a part of the sound output structure according to the embodiment. [Figure 4] FIG. 4 is a perspective view showing the configuration of a sealing material included in the sound output structure according to the embodiment. [Figure 5] FIG. 5 is a plan view showing the configuration of the sealing material as viewed in the direction of the arrow B shown in FIG. [Figure 6] FIG. 6 is a cross-sectional view taken along line CC shown in FIG. [Figure 7] FIG. 7 is a diagram for explaining an example of the positional relationship between a passenger and the sound output structure (opening) when the passenger gets into the vehicle. DETAILED DESCRIPTION OF THE INVENTION

[0009] Hereinafter, modes for carrying out the present invention (hereinafter referred to as "embodiments") will be described with reference to the accompanying drawings.

[0010] (Embodiment) First, a vehicle equipped with a sound output structure according to an embodiment will be described. Fig. 1 is a schematic diagram showing the configuration of a vehicle equipped with a sound output structure according to an embodiment. Fig. 2 is a plan view for explaining the configuration of the sound output structure according to an embodiment. Fig. 3 is a cross-sectional view showing the configuration of a part of the sound output structure according to an embodiment. Fig. 3 is a cross-sectional view corresponding to the cross section along line AA shown in Fig. 2. A sound output structure 1 according to this embodiment is provided in a vehicle.

[0011] The vehicle includes an instrument panel 100, a steering wheel 101, multiple doors including a door 110 on the driver's side, and multiple seats including a driver's seat 200. The vehicle also includes the components necessary for driving. Hereinafter, the front side of the vehicle relative to its traveling direction will be referred to as the front side, and the rear side will be referred to as the rear side.

[0012] The instrument panel 100 is provided with an instrument module such as a speedometer.

[0013] The steering wheel 101 extends rearward from the instrument panel 100.

[0014] The door 110 has a door panel 111 in which a window is provided, and a door trim 10 provided on the passenger compartment side of the door panel 111. The door trim 10 is an interior material that forms part of the interior wall surface of the passenger compartment and improves the appearance and livability of the passenger compartment. In the following description, the surface of the door trim 10 facing the passenger compartment will be referred to as the front surface, and the side facing the door panel 111 will be referred to as the back surface. The back surface of the door trim 10 faces the door panel 111, and the door panel 111 and the door trim 10 form an interior space.

[0015] The door trim 10 is provided with a duct 11, a speaker 20, and a seal material 30.

[0016] The duct 11 is provided on the rear surface of the door trim 10 and is in close contact with the door trim 10 to form a space S1.

[0017] Here, the door trim 10 has an opening 12 that penetrates the front and back of the door trim 10 at a portion surrounded by the duct 11, a position facing the instrument panel 100 when the door 110 is closed, and a position where a space S1 is formed. Through this opening 12, the space S1 formed by the door trim 10 and the duct 11 communicates with the space on the passenger compartment side.

[0018] The speaker 20 is provided in a space S1 formed by the door trim 10 and the duct 11. Any known speaker can be used as the speaker 20 as long as it can be housed in the space S1. Note that the speaker 20 is connected to an electric wire or the like (not shown) or is provided with a module capable of wireless communication.

[0019] The sealing material 30 has a cylindrical shape with a hollow portion 30a formed therein, and one end side in the penetration direction is attached to the opening 12 of the door trim 10. Fig. 4 is a perspective view showing the configuration of the sealing material provided in the sound output structure according to the embodiment. Fig. 5 is a plan view showing the configuration of the sealing material in the direction of arrow B (parallel to the penetration direction) shown in Fig. 4. Fig. 6 is a cross-sectional view taken along line CC shown in Fig. 5.

[0020] The sealing material 30 includes a first portion 31 provided at one end side in the penetration direction, and a second portion 32 provided at the other end side in the penetration direction and continuous with the first portion 31.

[0021] The first portion 31 has an annular shape, and a first groove portion 31a is formed on the outer periphery thereof.

[0022] The second portion 32 is open on the inner circumferential side and has an arc shape in a plan view in the penetration direction. Specifically, the second portion 32 is provided on the other end side of the first portion 31 in the penetration direction, and a second groove portion 32a is formed on the inner circumferential side. In addition, the second portion 32 is formed with a notch portion 33 formed by cutting out a part of the second portion 32 in the circumferential direction.

[0023] The sealing material 30 has a cutout portion 33 formed by a missing portion in the circumferential direction of the second portion 32. The length D1 (cutout width) of the cutout portion 33 along the circumferential direction of the second portion 32 can be set according to the sound output direction and range.

[0024] When the door 110 is closed, the second portion 32 abuts against and adheres tightly to the instrument panel 100. The first portion 31 is attached to the door trim 10 by inserting the edge of the opening 12 into the first groove portion 31a.

[0025] Furthermore, when the door 110 is closed, a gap S2 is formed between the door trim 10 and the instrument panel 100. The direction and range of sound propagation from the opening 12 to the gap S2 are determined by the length and position of the notch 33.

[0026] As shown in Figure 3, the vibrations / waves of the sound output by the speaker 20 are reflected by the inner wall of the door trim 10 and the inner wall of the duct 11, changing direction as they reach the opening 12, and are output into the vehicle interior through the sealing material 30 and the gap S2 between the door trim 10 and the instrument panel 100.

[0027] The sound output structure 1 according to the present embodiment includes a duct 11 attached to a door trim 10, which is a first structure, and which forms a space S1 between the duct 11 and the door trim 10, a speaker 20 provided in the space S1 and which outputs sound, and a sealing material 30 attached to the door trim 10, which is cylindrical and can abut against an instrument panel 100, which is a second structure, and which has a cutout portion 33 formed by cutting out a part of one side of the sealing material 30 in the penetration direction (here, a second portion 32). In the sound output structure 1, a hollow portion 30a of the sealing material 30 communicates with the opening 12, and the cutout portion 33 is formed in a position facing the gap S2 formed between the door trim 10 and the instrument panel 100.

[0028] 7 is a diagram illustrating an example of the positional relationship between a passenger and the sound output structure (opening) when the passenger gets into the vehicle. The position to which the notch 33 of the sealing material 30 faces is adjusted depending on the manner in which it is attached to the door trim 10. For example, by arranging the notch 33 above the seat 200, for example, in a position facing the headrest 201, the notch 33 can be adjusted to a position facing the face of the passenger 300 sitting in the seat 200, and the sound output from the speaker 20 can be output in the direction of the face of the passenger 300.

[0029] In the present embodiment described above, when the door 110 is closed, the opening 12 is positioned opposite and hidden by the instrument panel 100, the sealant 30 attached to the opening 12 abuts against the instrument panel 100, and sound output from the opening 12 is output into the vehicle cabin through the notch 33 formed in the sealant 30 and the gap S2 between the door trim 10 and the instrument panel 100. As a result, even if the speaker 20 and the opening 12 are hidden in the vehicle cabin, the occupant 300 can hear the sound emitted by the speaker 20. According to the present embodiment, the sound output structure 1 described above outputs sound clearly, thereby realizing a simple and stylish interior and ensuring that sound is transmitted to the occupant 300 reliably.

[0030] In addition, in the past, in order to realize an interior with excellent design, a configuration has been known in which an actuator is provided on the underside of the ceiling, and the vibrations generated by the actuator vibrate a ceiling panel to output sound into the vehicle cabin, but vibrating the ceiling panel can sometimes weaken high-frequency sounds.In contrast, the sound output structure 1 according to this embodiment can realize an interior with excellent design and can also reliably output high-frequency sounds.

[0031] In the above-described embodiment, an example has been described in which sound is propagated toward the gap S2 between the door trim 10 and the instrument panel 100, which are two vehicle structures. However, the structure is not limited to this. For example, the gap is not limited to being formed by the above-described members, as long as it covers an opening through which sound generated by the speaker 20 is output. For example, if the speaker 20 is provided inside the seat 200, the sound is output to the occupant through the gap formed between the seat 200 and the door 110, or the gap formed between the seat 200 and the console box. In this case, the sealing material 30 is attached to the seat 200, the door 110, or the console box, and the position of the notch 33 is adjusted.

[0032] In addition, in the above-described embodiment, an example was described in which the sealing material 30 was attached to the opening 12 of the door trim 10, but the sealing material 30 may also be attached to the instrument panel 100, and when the door 110 is closed, the sealing material 30 may abut against the door trim 10 to cover the opening 12.

[0033] In addition, in the above-described embodiment, an example was described in which the cutout portion 33 of the sealing material 30 is formed on the second part 32 side, which is opposite the side of the sealing material 30 that is attached to the opening 12 (the other end side in the penetration direction), but the cutout portion 33 may also be formed on the first part 31 side.

[0034] In the above-described embodiment, the end face at the position where the notch 33 is formed may be inclined, so that the cross section of the path from the notch 33 to the gap S2 can be gradually increased or decreased.

[0035] Furthermore, in the above-described embodiment, an example has been described in which the second groove portion 32a is formed in the second portion 32 of the sealing material 30, but the second portion 32 may be a solid arc-shaped portion without the second groove portion 32a, or the second groove portion may be formed on the outer periphery.

[0036] In the above-described embodiment, an example has been described in which sound is output into the vehicle cabin by speaker 20 that generates sound, but for example, a vehicle may be provided with a speaker that generates high-frequency sounds and a speaker that generates low- and mid-frequency sounds, and sound output structure 1 may be used for the speaker that generates high-frequency sounds. Also, a configuration may be adopted in which an actuator is provided in a ceiling panel or other interior part to vibrate the ceiling panel or other interior part to output low- and mid-frequency sounds into the vehicle cabin, and sound output structure 1 is provided separately from the actuator to output high-frequency sounds into the vehicle cabin.

[0037] Further advantages and modifications will readily occur to those skilled in the art. The invention in its broader aspects is not limited to the specific details and representative embodiments shown and described above. Accordingly, various modifications may be made without departing from the spirit or scope of the general inventive concept as defined by the appended claims and their equivalents. [Explanation of symbols]

[0038] 1...sound output structure, 10...door trim, 11...duct, 12...opening, 20...speaker, 30...sealing material, 31...first part, 32...second part, 33...notch, 100...instrument panel, 101...steering wheel, 110...door, 200...seat, S1...space, S2...gap

Claims

1. A sound output structure formed between two structures provided in a vehicle, a duct attached to the first structure to form a space between the duct and the first structure; a speaker provided in the space for outputting sound; a sealing material attached to one of the first structure and the second structure, the sealing material having a cylindrical shape capable of contacting the other structure, the sealing material having a notched portion formed by cutting out a part of one side in a penetration direction; Equipped with an opening penetrating the first structure is formed in the first structure at a position facing the second structure and at a position where the space is formed; the hollow portion of the sealing material communicates with the opening, the notch is formed at a position facing a gap formed between the first structure and the second structure; Sound output structure.

2. the first structure is a door trim of a vehicle, the second structure is an instrument panel provided opposite the door trim, The gap is formed when the door on which the door trim is provided is closed. The sound output structure according to claim 1 .

3. The sealant is attached to the opening. The sound output structure according to claim 1 or 2.

4. The cutout portion faces upward toward the vehicle seat. The sound output structure according to claim 2 .

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