JPH0222357Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a glove box structure that reduces noise generated from an intake unit provided in an instrument panel.

(Prior Art) A fan driven by a motor is attached to an intake unit installed in an instrument panel inside a vehicle, and noise is prevented from being transmitted into the vehicle interior due to the rotation of this fan. Become. Therefore, conventionally, as shown in Japanese Utility Model Publication No. 14087/1987, measures such as forming the internal air intake provided in the intake unit toward the dash panel side were used to prevent noise from being transmitted into the passenger compartment. However, due to the structure of the intake unit, it may be necessary to provide the inside air intake on the inside of the vehicle.

(Problems to be Solved by the Invention) In such cases, noise is generated by the air flowing into the inside air intake port, and the noise propagates into the vehicle interior, becoming the noise inside the vehicle interior.

The object of the present invention is to make the inside of a vehicle quieter by using a glove box provided in the instrument panel to muffle the noise generated from the intake unit.

(Means for Solving the Problems) The present invention for achieving the above object has an outside air intake that takes in air from outside the vehicle interior, and an inside air intake that takes in air from inside the vehicle interior. An intake unit having an intake door for opening and closing an intake port is provided in an instrument panel, a glove box is formed in the instrument panel adjacent to the intake unit, and an opening is formed on the side of the intake unit of the glove box. the inside of the glove box is partitioned by a porous metal plate located near the opening, and a resonance chamber is formed between the opening/closing lid provided at the front of the glove box and the porous metal plate. This is the structure of the glove box.

(Example) Hereinafter, the illustrated example of the present invention will be described. FIG. 4 is a diagram showing an instrument panel 1 provided in the vehicle interior, and this instrument panel 1 is provided with a grill 2 for blowing out temperature-controlled air into the vehicle interior, as well as a vehicle inspection certificate and maintenance notebook. A glove box 3 is provided within the instrument panel 1 to accommodate an instruction manual and the like. When a cross-sectional view of the glove box 3 portion of the instrument panel 1 is shown, the second
As shown in the figure, the instrument panel 1 has an outside air intake 4 that communicates with the outside of the vehicle, and an inside air intake 5 that opens into the passenger compartment. An intake unit 7 having an intake door 6 for opening and closing is provided. A fan 9 driven by a motor 8 is installed inside the intake unit 7, and a first fan 9 is installed inside the intake unit 7.
As shown in the figure, when the outside air intake port 4 is closed by the intake door 6, the rotation of the fan 9 causes air inside the vehicle interior to flow into the intake unit 7 from the inside air intake port 5.

A glove box 3 is formed in the instrument panel 1 adjacent to the intake unit 7, and an opening 10 is formed in the glove box 3 on the intake unit side. A glove box 3 is located near this opening 10.
A porous metal plate 11 is attached inside the glove box 3, thereby partitioning the inside of the glove box 3.
By partitioning with the porous metal plate 11, a resonance chamber 13 is formed in the glove box 3 between the metal plate 11 and the opening/closing lid 12.

As a means for attaching the porous metal plate 11 into the glove box 3, a band-shaped metal fitting 14 is used, as shown in FIG.

Next, to explain the operation, as shown in FIG. 1, when the intake door 6 closes the outside air intake port 4, the rotation of the fan 9 causes
Air within the vehicle interior flows into the intake unit 7 from the inside air intake port 5. At this time, even if noise is generated by the air flowing in from the inside air intake port 5, the sound is transmitted through the porous metal plate 11 to the resonance chamber 1.
3 and the sound is muted. That is, since the porous metal plate 11 has a large number of small holes with different diameters and communicates the opening 10 with the resonance chamber 13, the resonance chamber 13 corresponds to a Helmholtz resonance chamber.

FIG. 3 is a partially cutaway perspective view showing a glove box 3 according to another embodiment of the present invention. In this case, a wall 15 is provided on the intake unit side of the glove box 3, and a large number of holes are formed in this wall 15. 16, the opening 10 is formed. In addition, the glove box 3 shown in FIG.
, a sound insulating wall 17 is attached between the porous metal plate 11 and the opening/closing lid 12, and a resonance chamber 13 is formed between the opening/closing lid 12 and the sound insulating wall 17.

(Effects of the invention) As described above, according to the invention, there is an outside air intake that takes in air from outside the vehicle interior, and an inside air intake that takes in air from inside the vehicle, and these intakes are opened and closed. An intake unit having an intake door is provided in an instrument panel, a glove box is formed in the instrument panel adjacent to the intake unit, an opening is formed on a side of the intake unit of the glove box, and the opening is connected to the intake unit. The inside of the glove box is partitioned by a porous metal plate located near the front part of the glove box, and a resonance chamber is formed between the opening/closing lid provided at the front part of the glove box and the porous metal plate. The noise generated by the intake unit is also muffled in the resonance chamber in the glove box 3, which is located adjacent to the intake unit, reducing the noise level propagating into the vehicle interior, making it possible to maintain a quiet interior. Become.

[Brief explanation of the drawing]

Fig. 1 is a sectional view showing a glove box according to an embodiment of the present invention, Fig. 2 is a partially cutaway perspective view showing the glove box shown in Fig. 1, and Fig. 3 is another embodiment of the invention. FIG. 4 is a partially cutaway perspective view showing the glove box according to the invention, and FIG. 4 is a perspective view showing the instrument panel on which the glove box is provided. DESCRIPTION OF SYMBOLS 1...Instrument panel, 4...Outside air intake, 5...Inside air intake, 6...Intake door, 7...Intake unit, 10...Opening, 11...Porous metal plate, 12... Opening/closing lid, 1
3...Resonance chamber.

Claims (1)

[Scope of utility model registration request] An intake unit 7 is installed inside the instrument panel 1, and has an outside air intake 4 that takes in air from outside the vehicle interior, and an inside air intake 5 that takes in air from inside the vehicle interior, and has an intake door 6 that opens and closes these intakes. a glove box 3 is formed in the instrument panel 1 adjacent to the intake unit 7, and an opening 10 is formed on the side of the intake unit 7 of the glove box 3;
partitioning the inside of the glove box 3 with a porous metal plate 11 positioned near the opening 10;
A resonance chamber 1 is provided between the opening/closing lid 12 provided at the front part of the glove box 3 and the porous metal plate 11.
The structure of the glove box formed by 3.