JPS59216767A - Engine room insulator - Google Patents

Abstract

PURPOSE:To increase the substantial set area of an insulator and to prevent the occurrence of sagging due to mounting through elimination of a piercing part, by intermittenty installing sound absorbing materials along the corner part of an engine room. CONSTITUTION:Sound absorbing materials 20 are attached to the corner part of an engine room.Each sound absorbing material 20 is formed in a triangle, and the sound absorbing materials are stuck along a corner part A formed by a pair of panels P1 and P2 at proper intervals away from each other by means of adhesives and the like. An extrusion-molded product, made of such as urethane foaming material, is used as the material of the sound absorbing materials 20, which are stuck as they are flexibly deformed in conformity with the configuration of the corner part A.

Description

[Detailed description of the invention] (Field of invention) This invention relates to an engine room insulator.

(Bluestone of the Invention) In general, an engine room insulator absorbs noise from the main engine and auxiliary equipment installed in the engine room, and reduces the level of noise transmitted to the vehicle interior or outside as much as possible. It was established for a purpose.

As this type of engine room insulator, the first
As shown in the figure, a so-called hood insulator is attached to the inner surface of a hood 1 that covers the upper opening of the engine room E, and a fluorocarbon is installed on the front surface of the dash panel 3 that partitions the engine room E and the vehicle interior R. (-Insu,
Each of these insulators 2.4 is configured to have a planar shape that conforms to the surface shape of each panel as a product.

However, the interior of the engine room E is extremely small, and there is not enough space between the engine 5 and other parts and the vehicle body panel, so each insulator 2
．． The thickness of 4 is limited, or there are some areas where it does not adhere to the panel at all.

In particular, the surface of the dash panel 3 is the part that divides the engine room E and the passenger compartment R. Since there are many parts that pass through the dash panel 3, the parts are not inserted into the seat insulator 4. It is necessary to provide a large hole for the passage of n, and the setting area thereof becomes extremely small with respect to the surface of the Tatsushiko panel 3.

In addition, these insulators 2.4 are set perpendicularly to the panel or planarly on the bottom surface thereof, and moreover, the insulators 2.4 are set vertically to the panel or in the form of a plane on the bottom surface thereof, and moreover, the insulators 2.4 are set at +A (
For i, glass wool, felt.

Because it is made of flexible porous sheets such as foamed polyurethane or soft foam, it tends to sag, and in order to prevent this sagging, it is necessary to use fixing means such as resin clips in many places. In order to keep it fixed,
There are many places where the secondary resin clips or other means of attachment are missing, resulting in vacancies such as the number of man-hours required for assembly.

(Objective of the Invention) The object of the present invention is to eliminate the substantial set area of the insulator as described above, to have no circular portion, and to eliminate sagging due to attachment.

(Configuration and Effects of the Invention) In order to achieve the above object, the present invention provides a sound absorbing material provided in a portion of a vehicle body constituting an engine room, the sound absorbing material comprising: ] - It is characterized by being set intermittently in some parts.

However, the author of this book has focused on the fact that there is generally a suppression or rise in the corners of walls, and has attempted to achieve the above objective by installing sound-absorbing material in these areas.

In addition, the above configuration requires an extremely small set area as an insulator, and since it is a corner part, there is no shell through part, and by discontinuing it, the effective sound absorption area is compared to a conventional planar set. It will become extremely large.

It should be noted that the corner portion defined in the present invention is defined as the corner portion of three panels P1. as shown in FIG. I)2. It refers to Δ or B in one place where two or three of the combinations of P3 intersect, and the angle of intersection may be obtuse or acute; the key is to have a certain angle of intersection. The part where they intersect is called the "-" part.

Further, even in the same panel, corner portions are formed due to irregularities due to the pressed shape, and it goes without saying that the present invention can be applied to these portions as well.

(Explanation of Embodiments) Figure 3 shows the engine room E of an automobile to which this invention is applied.
This figure shows the car body panels that make up the Tallash panel 3, the lr in A, the 7-dredge panel 10. was formed/
j It is composed of a boiler house section 11.11, a fluorocarbon 1, and a panel 12.

In this figure, panels a3-(ha)-1 to C are omitted.

The corner section will be constructed by the assembly of C1 panels, and there are many intersections between these panels, including small protrusions, but for the time being, one side [1
If we consider it as a rectangular box, there are corners where the tarash panel 3 and the wheel house 11 are joined, corners where the tool 1 to ledge panel 10 and the wheel house 11 are joined, and the hood ledge panel 10 and the front panel 12.
The corner portion where the two are joined is mainly targeted for implementation of this invention.

J3, in reality, the interior of the soil thin room F is press-formed into a complex surface shape depending on the shape of each scale attachment part or tire, but in Fumoto's opinion, it is the intersection of the small and small parts. Becomes a J elephant.

FIGS. 4 and 5 show the arrangement of the sound absorbing material 20 according to the present invention relative to the above-mentioned part, and each sound absorbing material 20.2
0... has a triangular shape, and is attached to the corner A of the pair of panels PI and P2 with an adhesive or the like at appropriate intervals.

The material of the sound absorbing material 20 is an extrusion molded product such as urethane foam, and can be attached while being flexibly deformed along the shape of the corner portion A of the corner.

J3, it is preferable to set the spacing between the sound absorbing materials 20 to twice the thickness of the sound absorbing materials or less, which provides a preferable and optimal sound absorbing effect by balancing the increase in surface area and the sound absorbing performance.

Next, FIG. 6 shows a second embodiment of the present invention, in which triangular prism-shaped sound absorbing materials 30, 30 are integrally continuous via a thin-walled connecting portion 31. .

In this embodiment, since the sound absorbing materials 30 are integrally continuous, each corner part absorbs N and
It is highly workable because it can be set by pasting it in one direction without covering the setting of N.

Also in this case, it is desirable that the spacing between the sound absorbing materials 30 and 30 be set to 218 times or less of their thickness.

Next, FIG. 7 shows a third embodiment of the present invention, in which the end surfaces of the sound absorbing materials 40 and 40 are formed into a substantially trapezoidal shape, and the sound absorbing materials 40 and 40 are also thin. They are integrally connected by a shaped connecting portion 41.

In this example as well, the setting work is simplified as in the second embodiment, and the surface area is further increased by forming the trapezoid in a trapezoidal shape.

In each of the above embodiments, each of the sound absorbing materials 20 to 40 has its surface treated to make it water resistant, oil resistant, etc.
If so, there will be no deterioration or staining due to lubricating oil or rainwater in the engine room, and durability can be improved.

Furthermore, it goes without saying that each sound absorbing material may be not only a single foamed sound absorbing material, but also a combination of the foam sound absorbing material, a sound insulating material, a vibration damping material, or a combination of the three.

[Brief explanation of the drawing]

Fig. 1 is a partial wi-side view showing a conventional engine room insulator and its mounting structure, Fig. 2 is a schematic diagram for explaining the corner portion, and Fig. 3 is a configuration of the engine room applied to the present invention. FIG. 4 is an explanatory perspective view showing an example of this 5L light, FIG. 5 is a sectional view taken along the line Δ to Δ in FIG. FIG. 5 is a schematic cross-sectional view showing an example of 5-Mei no Haku. Pl, P2. P3......Panel 20.30.40...Sound absorbing material 31.41...・・・・・・・・・・・・
・・・・・・Connection part patent applicant Kasai Kogyo Co., Ltd. Figure 1 Figure 2 Figure 7

Claims (1)

[Scope of Claims] <1)" - A sound absorbing material is provided at a corner portion of an automobile body constituting an engine room, and the sound absorbing material is provided at the corner portion) (1) intermittently. An engine room insulator characterized in that: (2) Adjacent sound absorbing materials are integrally continuous via a thin-walled connecting portion.Claim No. 11J
The engine room insulator described in 'i.