JP2000006734A - Attaching structure for insulator dash - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily attach an insulator dash at low cost and to increase sealing performance in the attaching structure of the insulator dash to be fixed in the room of a dash panel. SOLUTION: A slit is provided in an insulator dash 10 corresponding to a stud bolt 21 provided in the fixing point of a dash panel 20, a conventional clip is abolished by locking the stud bolt 21 with a slit edge part and, thus, the number of part items and the number of attaching manhour are reduced, and sealing performance around the stud bolt 21 is increased to improve sound insulation. Also, by providing an embossed recess facing the panel side around the slit, the strength of an attaching part is increased, and by selecting T-shaped slit 30, the inserting workability of the stud bolt 21 is enhanced to regulate its upper/lower direction after the attaching.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an insulator dash mounting structure mounted on a vehicle dash panel on the indoor side of a dash panel, and more particularly to an insulator which can eliminate a clip and can be easily and inexpensively mounted. Related to dash mounting structure.

[0002]

2. Description of the Related Art For example, as shown in FIG. 6, a dash panel 1 that partitions an engine room E and a vehicle room R of a vehicle has an indoor surface side on which noise is propagated from the engine room E into the vehicle room R. Insulator dash 2 is installed to prevent noise, and this insulator dash 2 includes a sound insulating material layer 3 such as a (regenerated) PVC sheet or a (regenerated) rubber sheet mixed with a filler, a felt, a bulky nonwoven fabric, A laminate with a sound absorbing material layer 4 made of a porous base material such as polyurethane foam is generally used.

The sound absorbing material layer 4 absorbs noise from the engine room E, and the double-walled sound insulating effect of the dash panel 1 and the sound insulating material layer 3 exhibits good soundproofing properties in combination with the sound absorbing effect. I am trying to do it.

In order to attach the insulator dash 2 to the dash panel 1, as shown in FIG. 7, a stud bolt 5 is fixed to a fixing point of the dash panel 2 by welding or the like with its tip directed toward the cabin R side. The insulator dash 2 is provided with a mounting hole 6 corresponding to the stud bolt 5, the insulator dash 2 is positioned at an appropriate position on the vehicle cabin side of the dash panel 2, and the stud bolt 5 is mounted on the insulator dash 2. 6, and then insert the clip 7 into the stud bolt 5.
By fixing the clip 7 by engaging the engaging portion 7a of the clip 7 with the stud bolt 5, the outer peripheral edge 7b of the clip 7 is pressed against the surface of the insulator dash 2 by As shown in FIG. 8, the insulator dash 2 is pressed in the direction of close contact with the dash panel 1 so that the insulator dash 2 is securely fixed.

[0005]

As described above, in the conventional mounting structure of the insulator dash 2, the stud bolt 5 fixed to the dash panel 1 is inserted into the mounting hole 6 of the insulator dash 2, and the stud bolt 5 is fixed. Since the clip 7 is fitted and fixed from the front end side of the dash, the clip 7 is required for each fixing point of the insulator dash 2, and the number of parts is large.
Further, also in the mounting work of the insulator dash 2, after the stud bolt 5 is inserted into the mounting hole 6 of the insulator dash 2, the clip 7 is fitted and fixed, so that the number of working steps is increased, and the cost is increased. There was a problem.

Further, in the conventional mounting structure for the insulator dash 2, it is sufficient that the mounting hole 6 is slightly larger than the diameter of the stud bolt 5, but the mounting hole is taken into account in consideration of molding variations and mounting errors. The diameter of the mounting hole 6 is set to be relatively large. Therefore, it is pointed out that the sound leakage from the gap of the mounting hole 6 is remarkable in the vicinity of the fixing point, which causes a decrease in sound insulation.

The present invention has been made in view of such circumstances, and provides an insulator dash mounting structure that can be easily and inexpensively mounted and fixed to the interior side of a dash panel and that can enhance sound insulation. It is intended to be.

[0008]

In order to achieve the above object, an invention according to claim 1 of the present application is a method of mounting an insulator dash mounted on an interior surface side of a dash panel for partitioning an engine room and a vehicle compartment. In the structure, at the insulator dash fixing point of the dash panel, a stud bolt is formed so as to protrude toward the indoor side with its tip facing, and at the insulator dash fixing point, a slit is formed. By inserting a stud bolt and engaging a slit edge portion with the stud bolt, the dash panel holds the insulator dash.

Here, the sound insulating material layer may be appropriately selected from thermoplastic sheets that can be thermoformed, such as a (regenerated) PVC sheet and a (regenerated) rubber sheet mixed with a filler having a high specific gravity.

On the other hand, since the sound absorbing material layer is required to be thermoformable and to have a formability corresponding to a complicated curved shape, polyester fiber, conjugate fiber, heat welding fiber and the like are appropriately compounded. Entangled bulky nonwoven fabric,
Alternatively, a bulky nonwoven fabric in which a thermoplastic resin binder is appropriately mixed with a polyester fiber or a conjugate fiber is preferable, and a thermoformed felt or the like can be used.

The insulator dash may be an integral body formed along the dash panel upper portion, the dash panel lower portion, and the toe board portion. The insulator dash may be an upper and lower divided body mounted on the dash upper portion and the dash lower portion, respectively. May be comprised.

Next, the invention according to claim 2 of the present application is characterized in that an embossed concave portion is formed at the slit installation location toward the dash panel side.

Here, the embossed concave portion has a reinforcing function of providing rigidity to the stud bolt mounting portion, and a function of exposing the effective dimensions of the stud bolt to the interior of the room by forming a recess of a predetermined size on the panel side. I have.

Further, the invention according to claim 3 of the present application is characterized in that the slit is a T-shaped slit.

As is apparent from the above configuration, claim 1
According to the described invention, a slit is opened in the insulator dash with respect to the stud bolt fixed to the fixing point of the dash panel, and the insulator dash is fixedly fastened by inserting the stud bolt into this slit. With this configuration, the conventional clip can be eliminated, and no gap is formed around the stud bolt.

According to the second aspect of the present invention, the embossed concave portion facing the panel side is formed near the slit formed in the insulator dash, so that the rigidity of this portion is enhanced and the stud bolt is formed. The attachment strength between the dash panel and the insulator dash can be enhanced, and the attachment point can be set at the root of the stud bolt, so that the adhesion between the dash panel and the insulator dash can be improved.

According to the third aspect of the present invention, a T-shaped slit is adopted as a slit formed in the insulator dash for the stud bolt fixed to the fixing point of the dash panel. The stud bolt can be easily inserted from the intersection of the T-shaped slit, and once the stud bolt is inserted into the slit, the slit extending in the horizontal direction can reliably control the vertical direction.

[0018]

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

FIG. 1 is a front view of an insulator dash applied to a mounting structure according to the present invention, FIG. 2 is a longitudinal sectional view showing a state where the insulator dash shown in FIG. 1 is mounted on a dash panel, and FIG. 3 is an insulator at a fixed point. FIG. 4 is an enlarged sectional view showing a mounting structure of a dash, FIG. 4 is a perspective view of a main part showing a configuration of a mounting portion of an insulator dash at a fixing point, and FIG. 5 is a front view showing a modification of a slit formed in the mounting portion of the insulator dash. FIG.

In FIG. 1 and FIG. 2, an insulator dash 10 used in the present invention is mounted on the interior surface side of a dash panel 20 for partitioning an engine room E and a vehicle compartment R, and a sound insulating material layer 11 on the product surface side. And a sound absorbing material layer 12 located on the back side thereof.

More specifically, the insulator dash 10 has the outer shape shown in FIG. 1 so as to cover the surfaces of the dash panel upper portion 20a, the dash panel lower portion 20b, and the toe board portion 20c. (Regenerated) PVC sheet filled with high specific gravity filler,
(Reproduced) The material is made of a thermoplastic resin sheet material having a relatively high surface density such as a rubber sheet. The sound absorbing material layer 12 integrated with the back surface of the sound insulating material layer 11 is a molded felt having a desired sound absorbing function. Using a porous base material such as a molded nonwoven fabric as a material and heating and softening each material raw material, cold press molding or pressure-assisted cold press molding is performed so that the curved surface shape shown in FIG. And trim cut along a desired outline line.

The feature of the present invention is that the insulator dash 10 can be easily and inexpensively attached to the dash panel 20 and that the sound insulation performance at the portion where the insulator dash 10 is fixed is enhanced. First, the mounting structure of the insulator dash 10 will be described. First, a stud bolt 21 is fixed to the dash panel 20 at a fixing point in a direction substantially perpendicular to the panel surface by welding or the like so that the tip thereof faces the indoor side. .

Then, in the insulator dash 10 corresponding to the place where the stud bolt 21 is installed, T
The T-shaped slit 30 is formed, and an embossed concave portion 40 is formed near the T-shaped slit 30 so as to be depressed toward the dash panel 20 side.

Therefore, in order to attach the insulator dash 10 to the dash panel 20, the dash panel 2
0, the insulator dash 10 is located at an appropriate position on the indoor surface side, and the T-shaped slit 30 is pushed into the stud bolt 21 at each fixing point, so that the stud bolt 21 The edge of the T-shaped slit 30 is engaged with the stud bolt 21 at a position where the insulator dash 10 comes into close contact with the dash panel 20 and is firmly fixed. Become.

As described above, according to the mounting structure of the insulator dash 10 according to the present embodiment, the insulator dash 10 is simply located on the dash panel 20 at an appropriate position, and the stud bolt 21 is simply inserted into the T-shaped slit 30. The conventional clip can be eliminated because it can be attached to the system, and the cost can be greatly reduced by reducing the number of attachment parts. In addition, since the clip attaching operation can be eliminated, there is an advantage that the attaching operation can be simplified. .

Further, there is no gap formed around the stud bolt as in the conventional mounting hole, and no gap is formed around the stud bolt 21, so that there is an advantage that sound insulation is excellent.

In addition, since the embossed concave portion 40 is formed, the rigidity of the edge of the T-shaped slit 30 engaged with the stud bolt 21 can be enhanced, and the stud bolt 21
Because the T-shaped slit 30 edge is attached to the root of
Reliable fixation can be expected at a position where the insulator dash 10 is in close contact with the dash panel 20.

As shown in FIG. 4, the advantage of the T-shaped slit 30 is that the stud bolt 2 is formed at the intersection 33 between the horizontal slit 31 and the vertical slit 32.
1 can be easily inserted, and the structure for engaging the stud bolt 21 is a longitudinal slit 3
The tips of the tongue pieces 34a, 34b located on both sides of
Since the insulator dash 10 is securely engaged with the stud bolt 21 by ゜, the insulator dash 10 is securely held to the stud bolt 21, and the vertical slit can be restricted by the lateral slit 31. Without slipping in the direction
Reliable and firm fixing is possible.

The above-described embodiment is applied to the mounting structure of the insulator dash 10 integrated along the interior surfaces of the dash panel upper portion 20a, the dash panel lower portion 20b, and the toe board portion 20c. Part 20a and dash panel lower part 20b
Can also be applied to an insulator dash consisting of upper and lower two-piece bodies individually covering the above.

Next, T which is engaged with the stud bolt 21
Instead of the character-shaped slit 30, a slit provided with an appropriate variation can also be used.

FIG. 5A shows a minus-shaped slit 50, which is slightly inferior in the insertability of the stud bolt 21 into the minus-shaped slit 50.
After the 1 is inserted into the minus slit 50, there is an advantage that the position regulation in the vertical direction can be more reliably performed.

The plus slit 51 shown in FIG. 5B has a horizontal slit 51a and a vertical slit 51b.
The stud bolt 21 can be easily inserted from the intersection 52 with the tongue, which is advantageous in terms of workability, and the tips of the four tongues bite into the thread grooves of the stud bolts 21 so that the four tongues can be inserted. Due to the flexibility of the above, there is an advantage that an error when the fixing point is slightly shifted can be absorbed.

FIG. 5C shows a Y-shaped slit 53.
Is functionally similar to the T-shaped slit 30, and is positioned between the T-shaped slit 30 and the plus slit 51.

As described above, a slit having an appropriate shape may be selected in consideration of the required strength and the amount of absorption of variation.

[0035]

As described above, the mounting structure of the insulator dash according to the present invention has the following special effects.

(1) According to the first aspect of the present invention, the insulator dash is attached to the dash panel by inserting a slit provided in the insulator dash into the stud bolt fixed to the fixing point of the dash panel. With such a configuration, the conventional clip can be eliminated, the number of parts can be reduced, and the man-hours for attaching the clip can be eliminated, so that there is an effect that the cost can be significantly reduced.

(2) According to the first aspect of the present invention, the slit provided on the insulator dash is inserted into the stud bolt for the stud bolt fixed to the fixing point of the dash panel, and the slit edge provided on the insulator dash is provided. Since the stud bolts are fixed and fixed at the part, there is no gap caused by the mounting hole around the stud bolt unlike the conventional case, and the sealing performance around the stud bolt is improved, so the sound insulation performance Can be increased.

(3) According to the second aspect of the present invention, since the embossed concave portion facing the panel side is formed around the slit provided on the insulator dash, the rigidity of the peripheral portion of the slit can be enhanced. Since the engaging force to the stud bolt is increased, and the slit edge is fastened near the root of the stud bolt, the slit edge is fastened to the stud bolt in close contact with the dash panel. This has the effect that reliable and firm attachment can be expected.

(4) According to the third aspect of the present invention, a T-shaped slit is provided in the insulator dash with respect to the stud bolt installed at the fixing point of the dash panel. The stud bolt can be easily inserted by using the vertical slit and the horizontal slit in the shape slit, and once it is inserted, the downward slip of the insulator dash can be regulated by the horizontal slit, ensuring stable installation. This has the effect that it can be guaranteed for a long time.

[Brief description of the drawings]

FIG. 1 is a front view showing an insulator dash applied to an insulator dash mounting structure according to the present invention.

FIG. 2 is a longitudinal sectional view showing one embodiment of an insulator dash mounting structure according to the present invention.

FIG. 3 is a sectional view of a main part of the mounting structure of the insulator dash shown in FIG. 2;

FIG. 4 is a perspective view showing a T-shaped slit formed in a mounting portion of an insulator dash.

FIG. 5 shows a slit shape formed on an insulator dash used for the mounting structure of the insulator dash according to the present invention.
(B) is a front view showing a plus slit, and (c) is a front view showing a Y-shaped slit.

FIG. 6 is an explanatory view showing a place where an insulator dash is installed.

FIG. 7 is an explanatory view showing a mounting structure of a conventional insulator dash.

FIG. 8 is a sectional view showing a state where a conventional insulator dash is attached to a dash panel.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Insulator dash 11 Sound insulation material layer 12 Sound absorption material layer 20 Dash panel 20a Dash panel upper part 20b Dash panel lower part 20c Toe board part 21 Stud bolt 30 T-shaped slit 31 Horizontal slit 32 Vertical slit 33 Intersection 40 Emboss concave part 50 Minus slit 51 Plus slit 53 Y-shaped slit E Engine room R Car room

Claims (3)

[Claims] 1. A mounting structure of an insulator dash mounted on an indoor surface side of a dash panel (20) for partitioning an engine room (E) and a vehicle compartment (R), wherein the insulator dash (20) of the dash panel (20) is provided. 10) At the fixing point, a stud bolt (21) is formed so as to protrude toward the indoor side with its tip facing, and a slit is formed at the fixing point of the insulator dash (10), and the stud is formed in the slit. The dash panel (2) is inserted by inserting the bolt (21) and engaging the slit edge with the stud bolt (21).
An insulator dash mounting structure, wherein an insulator dash (10) is held at 0). 2. The mounting structure for an insulator dash according to claim 1, wherein an embossed concave portion (40) is formed at the slit installation location toward the dash panel (20). 3. The T-shaped slit (3)
The mounting structure of the insulator dash according to claim 1 or 2, wherein 0).