JPS62312Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a mounting structure for a vehicle speaker device installed in a rear parcel or instrument panel of a vehicle.

As a conventional vehicle audio system, one in which a speaker is attached to a rear parcel, as shown in FIG. 1, is widely known. To explain this, 1
is a vehicle body frame, and a rear window 3 is mounted on the vehicle body frame 1 behind the rear seat bag 2 so as to face it. Further, a rear parcel 4 is attached to the vehicle body frame 1 behind the rear seat bag 2, and a speaker unit 5 is fixed with a mounting member 6 around the attachment hole drilled in the rear parcel 4 and the vehicle body frame 1. ing. Further, a speaker grill 7 is fitted into the sound emitting opening side of the speaker unit 5. And speaker unit 5 is rear parcel 4
It seems to be buried under the face.

However, with regard to the mounting structure of the speaker unit 5, although the rear visibility through the rear window 3 can be ensured sufficiently compared to a structure in which the speaker unit 5 is provided protruding above the rear parcel 4, the speaker unit 5 The sound waves radiated upward are reflected by the rigid rear window 3 and refracted forward, so the sound waves reflected from each part of the rear window 3 interfere with each other and increase the sound pressure level. There was a problem in that undulations occurred and the sound quality deteriorated.

The present invention aims to improve this problem by forming an opening in a panel member disposed at the bottom of the window glass in the vehicle interior, and installing a cylindrical bracket under the surface of the panel member that communicates with the opening. A speaker is attached to the opening at the lower end of the bracket, and an acoustic lens made of a corrugated plate that deflects sound waves emitted from the speaker toward the center of the vehicle interior is arranged inside the bracket, and a passage formed by the corrugated plate is arranged. The object of the present invention is to provide a mounting structure for a vehicle speaker device in which a speaker device is formed into a long shape as it approaches a central portion of a vehicle interior.

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

FIG. 2 is a partially longitudinal front view showing the configuration of the speaker device of the present invention, in which 5 is a speaker unit, 8 is a cylindrical bracket having a mounting flange 9 at the end,
10 is a cylindrical spacer attached to the inner surface of the bracket 8. A ring-shaped groove 11 is provided on the inner circumferential surface of the tip of the spacer 10 . Reference numeral 12 denotes a sound wave refraction type acoustic lens, which is provided within the spacer 10, and a ring-shaped projection 13 is provided on the outer peripheral surface of the tip of the acoustic lens 12. This protrusion 13
is slidably fitted into the groove 11,
The acoustic lens 12 is rotatably supported without coming off the spacer 10. This acoustic lens has a wavy plate 22 that deflects the sound emitted from the speaker unit 5 toward the center of the casing 24, and a passage 23 between the wavy plates 22 approaches asymptotically to the center of the casing 24. It is shaped into an elongated shape as it grows. Further, the speaker unit 5 is attached to the bracket 9 by a mounting member 14.

FIG. 3 is a longitudinal sectional view of the speaker device S installed on the rear parcel 4. As shown in FIG. That is, a mounting hole 15 is provided in the vehicle body frame 1 below the rear parcel 4, and a recess 16 is formed around the mounting hole 15. The mounting flange 9 at the front of the bracket 8 is placed on the upper surface of the recess 16, and the mounting flange 9 is fixed in the recess 166 by the mounting member 17. With such a structure, the speaker unit 5 and the acoustic lens 12 do not protrude above the rear parcel 4. Further, a vehicle 18 equipped with such a speaker device S is shown in FIG. Here, the speaker device S is connected to the rear parcel 4.
It is installed in the upper two places. Note that 19 is an instrument panel, and 20 is a front seat.

The speaker device S having such a configuration is as follows.
The acoustic lens 12 is moved in the direction X-Y shown by the arrow in FIG. 4 with respect to the spacer 10 and the bracket 8.
By rotating the speaker unit 5
As shown in FIG. 3, the sound waves from the rear window 6 can be deflected in the direction of arrow Z without being reflected by the rear window 6. In this way, the sound pressure level of the sound waves radiated to the front seat 20 side is not distorted over each frequency band, and signals with poor fidelity such as peaks and dips are less likely to be included. This is more noticeable compared to . Further, since the acoustic lens 12 can be freely rotated, sound can be emitted in a direction desired by the occupant.
Furthermore, since the speaker unit 5 and the like do not protrude above the rear parcel 4, the exterior is clean and the rear visibility is not obstructed. Although this embodiment shows a type in which the speaker is embedded in the rear parcel, the same effect can be obtained by a type in which the speaker is embedded in the upper surface of the instrument panel 19, and the effect is particularly great in this case because the speaker embedded is for high-pitched sounds.

As explained above, according to the present invention, by attaching the acoustic lens to the front surface of the speaker unit embedded under the surface of the rear parcel or instrument panel, there is no need to form a protrusion on the rear parcel or instrument panel. , which contributes to safe driving by ensuring sufficient rearward visibility, and has a sleek appearance. In addition, the sound waves emitted from the speaker unit do not reflect off the rear window or front window and directly reach the desired position on the front and rear seats, so the sound waves are not distorted across each frequency band and can produce high-quality acoustics. can be heard.

[Brief explanation of the drawing]

FIG. 1 is a longitudinal sectional view showing the mounting structure of a conventional vehicle speaker device, FIG. 2 is a longitudinal sectional view showing the speaker device according to the present invention, FIG. 3 is a longitudinal sectional view showing the same mounting structure, and FIG. FIG. 4 is a perspective plan view of a vehicle similarly equipped with a speaker device. 1...Vehicle frame, 4...Rear parcel, 5
...Speaker unit, 8 ...Bracket, 10
... Spacer, 12 ... Acoustic lens, 18 ... Vehicle, S ... Speaker device, 22 ... Corrugated plate, 23
...Aisle, 24...Car compartment.

Claims (1)

[Scope of utility model registration request] An opening is formed in a panel member disposed at the bottom of the window glass in the vehicle interior, a cylindrical bracket communicating with the opening is attached below the surface of the panel member, and a speaker is installed in the opening at the lower end of the bracket. At the same time, an acoustic lens made of a corrugated plate that deflects the sound waves emitted from the speaker toward the center of the vehicle interior is arranged inside the bracket, and the path of the waveform plate is lengthened as it approaches the center of the vehicle interior. A mounting structure for a vehicle speaker device characterized by being shaped into a square shape.