JPH10100810A - Automobile insulator dash - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enhance the sealing of a lead-through slit provided in an insulator dash for penetrating a bracket for installing a heater unit and a steering post, etc., installed on a dash panel. SOLUTION: A molded recessed part 21 or molded projected part is formed on a noise insulation material 20 around a lead-through slit 11 provided in an insulator dash for penetrating a bracket 50 for installing a heater unit, etc. The result provides the slit 11 with enhanced rigidity, prevents corrugation, etc., provides a bracket installing part with enhanced sealing to enhance noise insulation performance.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an insulator dash for an automobile mounted on the interior side of a dash panel, and more particularly, to a sound insulation performance of a bracket mounting portion fixed to the dash panel for mounting a heater unit and a steering post. The present invention relates to an automotive dash with an increased height.

[0002]

2. Description of the Related Art Generally, as shown in FIG. 8, a dash panel 1 for partitioning an engine room E and a vehicle compartment R of a vehicle is provided with a soundproof dash panel 2 for a vehicle. The insulator dash 2 is made of a high-density sound insulating material 3 such as a thermoplastic resin sheet or a recycled rubber sheet mixed with a filler having a high specific gravity, and a porous base material such as felt or nonwoven fabric integrated on the back surface thereof. From the sound absorbing material 4.

Further, although not shown, a mounting bracket 5 is fixed to the dash panel 1 by welding or the like as shown in FIG.
The insulator dash 1 is provided with a slit 6 for penetrating the mounting bracket 5.

[0004]

As described above, in the conventional insulator dash 2, the mounting bracket 5 is welded and fixed to the dash panel 1 in order to mount the heater unit, the steering post and the like to the dash panel 1. The insulator dash 2 has a slit 6 for penetrating the bracket 5 therethrough. However, it has been pointed out that there is no rigidity around the slit 6 and the slit 6 opens. ing.

Further, when the insulator dash 2 is mounted on the dash panel 1, there is a tendency that the mounting bracket 5 pushes the slit 6 for penetrating the insulator dash 2 so that the slit 6 undulates to promote opening.

Therefore, since the sealing property of the slit 6 for penetration is reduced, as shown by an arrow in FIG. 10, noise is easily transmitted from this portion to the interior of the vehicle interior, which is a major factor in lowering the sound insulation performance. I was

The present invention has been made in view of such circumstances, and has a sealing property around a penetration slit for penetrating a mounting bracket used for mounting a heater unit, a steering post, and the like to a dash panel. An object of the present invention is to provide an automobile dash with improved sound insulation performance by increasing the height.

[0008]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention provides a laminated body of a sound insulating material and a sound absorbing material, which is installed on a side surface of a dash panel for partitioning an engine room and a vehicle room. In the insulator dash for an automobile, the insulator dash is provided with a through slit for penetrating a mounting bracket attached to a dash panel, and a molded concave portion or a molded convex portion is formed in the sound insulating material around the through slit. Is formed.

Here, a high-density thermoformable resin sheet such as a PVC sheet or a recycled rubber sheet filled with a filler having a high specific gravity is used as the sound insulating material.
Porous substrates such as molded felt and molded non-woven fabric are used,
This also uses a thermoformable material to follow the complex surface shape of the dash panel.

[0010] A slit is formed at a predetermined position of the insulator dash, and when the insulator dash is mounted on the dash panel, the through slit is formed by a mounting bracket (heater) which is welded and fixed to the dash panel in advance. The bracket has a function of penetrating a unit and a bracket for attaching a steering post to expose the bracket to the indoor side.

Further, a molded concave portion or a molded convex portion is formed in the sound insulating material around the slit for penetration, and the molded concave portion or the molded convex portion is formed at the same time when the sound insulating material is molded into a product shape. good.

Further, when forming the molded concave portion in the sound insulating material, the rigidity of the slit portion is further improved by forming the sound absorbing material located on the back side of the concave portion to be thin.

As is apparent from the above configuration, since the sound-insulating material around the slit is formed with a molded concave portion or a molded convex portion, the rigidity of this portion is enhanced, and when the insulator dash is attached to the dash panel, The waving phenomenon that occurs in the slit during the operation of penetrating the bracket is eliminated.

Further, the rigidity is enhanced by the molded concave portion or the molded convex portion, and the restoring force is doubled, so that the opening of the slit can be prevented as much as possible.

[0015]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, an embodiment of a vehicle insulator dash according to the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is a sectional view showing a state in which an automobile insulator dash according to the present invention is mounted on a dash panel, FIG. 2 is a front view of the insulator dash, and FIG.
FIG. 4 is a perspective view of a main part of the insulator dash, FIG. 4 is a cross-sectional view of a main part of the insulator dash, and FIGS. 5 to 7 are cross-sectional views showing another embodiment of the automotive insulator dash according to the present invention.

In FIG. 1 and FIG. 2, an automobile insulator dash 10 is composed of a laminated body of a sound insulating material 20 and a sound absorbing material 30, and has a dash panel 40 which partitions an engine room E and a vehicle compartment R. Attached and fixed along the indoor side.

More specifically, the sound insulating material 20 is made of a thermoplastic sheet material having a relatively high areal density, such as a PVC sheet or a recycled rubber sheet filled with a filler having a high specific gravity.
The sound absorbing material 30 is formed of a porous base material such as a molded felt or a molded nonwoven fabric having a desired sound absorbing function.

After the sound insulating material 20 and the sound absorbing material 30 are preheated and softened, they are formed into a shape along the surface shape of the dash panel 40 by cold press forming.

Further, a vacuum suction mechanism and an air blow mechanism are provided in the cold press mold, and the sound insulating material 20 is vacuum-suctioned on the mold surface during cold press molding, so that a more severe shape can be obtained. During the press molding of, by applying air blow, the cooling time is shortened, so that the formability of the sound absorbing material 30 is also improved.

By the way, various components such as a heater unit and a steering post are mounted on the interior side of the dash panel 40, and mounting brackets are fixed to predetermined portions of the dash panel 40 by welding or the like corresponding to these mounting portions. ing.

When the insulator dash 10 is mounted on the dash panel 40, the mounting brackets are made to penetrate, and in order to ensure the sealing performance of these mounting portions, as shown in FIG. (Slit 1 for heater unit bracket
1, slits 12) for the steering post bracket are set at a plurality of locations on the insulator dash 10.

FIG. 3 shows a configuration of the insulator dash 10 at a mounting position of a mounting bracket 50 for mounting a heater unit (not shown). The insulator dash 10 has a substantially H-shaped slit 11 for penetration.
Are formed, and leg pieces 51 of the mounting bracket 50 penetrate the slits 11a on both sides.

Incidentally, the present invention is characterized in that a molded concave portion 21 is formed around the sound insulating material 20 along these through slits 11 in order to enhance the sealing performance of the bracket 50 mounting portion.

Accordingly, as shown in FIG. 4, the rigidity of the slit 11 for penetration is enhanced by the molded concave portion 21, and the slit 11 for penetration does not open.

Furthermore, when the insulator dash 10 is mounted on the dash panel 40, even if the insulator dash 10 is pressed by the mounting bracket 50 in the opening direction of the through slit 11, the force for restoring the through slit 11 to its original shape acts. Therefore, the wavy shape does not occur, and the closed state of the slit 11 for penetration is kept good.

In addition, there is no occurrence of opening or waving of the slit 11 for penetration, and good sealing properties can be ensured.
Noise does not leak into the cabin from this part,
There is an advantage that sound insulation performance can be improved.

In this embodiment, the sound insulating material 20 is used.
The embossed concave portion 41 is also formed in the dash panel 40 corresponding to the embossed depth of the formed concave portion 21 to be formed at the same time, and the sound absorbing material 30 is maintained at substantially the same thickness as that of the general portion also at this portion. However, for example, when the mounting portion of the leg 51 of the mounting bracket 50 is formed as the flat shape shown in FIG. 5 or the embossed convex portion 42 shown in FIG. The sound-absorbing material 30 is compression-molded into a thin portion 31. The thin portion 31 has an advantage that the rigidity is enhanced and the sealing performance is further improved.

Further, as shown in FIG. 7, a molded convex portion 22 may be formed on the sound insulating material 20 around the slit 11 for penetration to enhance the rigidity around the slit 11, and the molded concave portion 21 or The application of the molded convex portion 22 may be arbitrarily performed in consideration of the shape of the insulator dash 10 and the shape of the bracket 50.

[0030]

As described above, the insulator dash for a vehicle according to the present invention has a slit for penetrating the insulator dash for penetrating the mounting bracket, and has a sound insulation so as to cover the periphery of the slit for penetration. Because it is a configuration that sets a molding concave or convex part in the material, the rigidity of the slit part is enhanced,
Since there is no opening, and problems such as waving can be effectively solved, the sealability of the bracket mounting portion is improved, sound leakage into the vehicle interior can be reliably prevented, and sound insulation performance can be enhanced. It has the effect of.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view showing an embodiment of an automotive insulator dash according to the present invention.

FIG. 2 is a front view showing one embodiment of the automotive insulator dash according to the present invention.

FIG. 3 is a perspective view of a main part showing a bracket mounting portion in the automotive insulator dash according to the present invention.

FIG. 4 is a sectional view taken along line IV-IV in FIG. 3;

FIG. 5 is a sectional view showing another embodiment of the automotive insulator dash according to the present invention.

FIG. 6 is a sectional view showing still another embodiment of the automotive insulator dash according to the present invention.

FIG. 7 is a cross-sectional view showing still another embodiment of the automotive insulator dash according to the present invention.

FIG. 8 is a side view showing an installation location of an automobile insulator dash.

FIG. 9 is a perspective view showing a bracket mounting portion in a conventional automotive insulator dash.

FIG. 10 is a sectional view taken along line XX in FIG. 9;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Insulator dash for automobiles 11 and 12 Slit for penetration 20 Sound insulation material 21 Molding concave part 22 Molding convex part 30 Sound absorbing material 31 Thin part 40 Dash panel 41 Emboss convex part 42 Emboss concave part 50 Mounting bracket 51 Leg piece

Claims (1)

[Claims] 1. A dash panel (40) defining an engine room (E) and a vehicle room (R), which is installed on a side surface of a vehicle interior of a vehicle, and is composed of a laminate of a sound insulating material (20) and a sound absorbing material (30). In the insulator dash for automobiles, the insulator dash (10) has a mounting bracket (5) attached to a dash panel (40).
0) has been opened, and the slits (11, 1) have been opened.
2) An insulator dash for an automobile, wherein a formed concave portion (21) or a formed convex portion (22) is formed in a surrounding sound insulating material (20).