JPS60240571A - Insulator cover and method of manufacturing same - Google Patents

Abstract

PURPOSE:To improve the efficiency of attaching work on a plastic hook and prevent a sound from leaking through an attaching hole, by integrally fixing the plastic hook on an insulator cover. CONSTITUTION:An insulator cover 5 is so formed that it is matched with the reverse side of the hood 1 of an automobile and with the protrusion of a reinforcement 2. A hook 7 is fixed on the insulator cover 5, in a position corresponding to an engaging hole 3. The hook 7 is so provided that the reinforcement 2 is pinched between the anchoring portion 7a and holding portion 7b of the hook when the insulator cover 5 is placed on the reverse side of the hood 1 and the anchoring portion 7a is pushed into the engaging hole 3.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of the Invention) The present invention relates to an insulator hood that can improve installation workability and sound absorption effect, and a method for manufacturing the same.

(Prior art and its problems) An insulator hood is a sound-absorbing plate or sound-insulating material attached to the back of the hood to prevent engine noise and vibration from the engine compartment from being transmitted to the interior of the vehicle and outside the vehicle. This insulator hood is made of a porous sound-absorbing material such as felt or glass wool.

3(a) and 3(b) are explanatory diagrams of the conventional insulator hood mounting structure for the back surface of the bonnet and the back surface of the bonnet.A reinforcing rain hose 2 is attached to the back surface of the bonnet 1 by welding or the like. The rain hose 2 is formed to have a substantially trapezoidal cross section so as to form a space between it and the back surface 1a of the bonnet 1, and locking holes 3 are punched out at predetermined locations.

The insulator hood 5 has an outer shape a of the rain hose 2.
3 and the shape of the back surface 1a of the bonnet, and the position corresponding to the locking hole 3 is
A mounting hole 6 is formed therethrough. Reference numeral 7 indicates a resin clip for locking and fixing the internator hood 5 to the mounting hole of the rain hose 2. The clip 7 is made of hard plastic, etc., and has an anchor part 7a at the tip and a mounting hole at the rear end. The locking portion 7b has a diameter larger than the diameter of the locking portion 7b. Further, at least 12 to 20 clips 7 are usually required.

Next, insulator hood 5 for rain hose 2
The installation operation involves placing the insulator hood 5 on the back of the bonnet, positioning it, and then drilling (piercing) a mounting hole at the position corresponding to the locking hole 3 of the rain hose to communicate the two holes 3 and 6. This is done by further inserting the clip 7 and sandwiching the rain hose 2 and the hood insulator 5 between the anchor part 7a and the locking part 7b of the clip 7.

However, in conventional insulator hoods, the number of ribs is at least 12 to 20, so
During the installation process, a considerable amount of labor is spent on drilling the installation hole 6 of the insulator hood, which increases the number of installation steps and makes the installation process complicated.

In addition, since the process of locking the insulator hood 5 is performed using a separate clip, the locking process itself using the clips is complicated, and the assembly increases the number of man-hours and may be an obstacle to speeding up the work or mechanizing the process. It had become.

In addition, the mounting hole 6 formed in the insulator hood 5 reduces the surface area of the insulator hood 5, and noise from the engine room leaks to the outside through the gap with the clip 7, which is a factor in reducing the sound absorption effect. In particular, in the conventional mounting structure where 12 or 20 or more clips are used, JI! leaks from each mounting hole 6. The total value of the sound cannot be ignored.

(Object of the Invention) An object of the present invention is to provide an insulator hood that can improve installation workability without reducing the soundproofing effect, and a method for manufacturing the same.

(Structure and Effects of the Invention) In order to achieve the above object, the present invention provides an insulator hood that is locked and fixed to a locking hole of a rain port on the back side of a bonnet with a resin clip, in which the insulator shown in J- is:
The resin clip is integrally fixed to the S-later hood by adhesive or heat welding.

According to this J, eel configuration, the resin clips are fixed to the insulator hood in advance, so even if a large number of clips are used, each clip can be adjusted in one step.
Human retention is completed, and the work of removing the insulator hood from the bonnet 1 to the back side is simple.

It can save labor. In addition, since there is no need to drill a mounting hole in the insulator hood as in the conventional case, the number of installation steps is reduced, and since no noise leaks from the mounting hole, the sound absorption effect is increased, etc. It has the following effects.

In addition, in order to achieve the above object, the method of the present invention provides an insulator hood manufacturing method in which a preheated insulator hood original fabric is press-molded by an upper die and a lower side, in which a clip formed on a molding convex portion of the lower die is provided. A clip setting step in which the resin clip is seated on the seating portion with the joint surface of the resin clip facing upward; and a step in which the preheated insulator hood material is inserted between the upper mold and the lower mold. A reversing process and a press molding process in which the upper and lower molds are clamped with the insulator hood original fabric inserted and pressure molded while heating, and the joint surface of the resin clip is adhered or welded to the insulator hood original fabric. It is characterized by consisting of.

According to the manufacturing method described above, a large number of resin clips can be integrated into the insulator hood original fabric during molding.
It is extremely easy to manufacture, and eliminates various inconveniences caused by the insulator hood and resin clip being separate bodies (increased installation process, decrease in sound absorption efficiency due to sound leakage from the mounting hole). be able to.

(Description of Examples) FIGS. 1(a) and 1(l) show an example of an insulator hood according to the present invention, and FIG. 3(a).

The same parts as in (b) are given the same reference numerals, and duplicate numbers are omitted. However, the joint surface 70 (bottom surface) of the engaging part 7b of the resin clip 7 on the insulator hood 5 is bonded or molded with adhesive. The insulator panel is different from the conventional insulator panel in that it is integrally fixed by thermal welding.

The insulator hood 5 is formed to match the back surface of the bonnet 1 and the protruding shape of the rain hose 2, and a clip 7 is provided at a position corresponding to the locking hole 3.
jV is gone. When the clip 7 applies the insicolator hood 5 to the back surface of the bonnet 1 and pushes the anchor part 7a into the locking hole 3, the anchor part 7a elastically deforms and passes through the locking hole. After returning to the original shape, the rain pose 2 is held between the locking portion 7b and the locking portion 7b.

Next, FIG. 2 shows a molding procedure in the method for manufacturing an insulator hood according to the present invention, in which 8 is an upper mold, 9 is a lower mold, the upper mold 8 has a molding recess 8a, and the lower mold 9
A molded convex portion 9a is formed on. Further, a clip seating portion 10 (a recessed portion for supporting the resin clip 7) is formed at the center of the upper surface of the molded convex portion 9a. As shown in the figure, the resin clip 7 is seated and supported on the clip seating portion 10 with its joint surface 7C facing inward (towards the upper mold), and preferably the joint surface 7C is aligned with the upper surface of the molding convex portion 9a. The shape of the seating portion 10 is determined so that they are on the same surface. To mold the insulator hood 5 using the upper mold 8 and the lower mold 9, first insert the resin clip 7 into the clip seating part 10 on the molding convex part 9a of the lower mold 9 so that the joint surface 7C faces upward and seat it. The clipping process and the original process for inserting the preheated plate-shaped insulator hood raw fabric 5a between the upper and lower molds 8°9 (or moving the molds 8 and 9 to the upper and lower positions of the raw fabric 9a) This is carried out by a resetting process and a press forming process in which the upper and lower molds 8 and 9 are clamped with the original insulator hood fabric inserted and heated while being hot-formed.

The resin clip 7 and the insulator hood raw fabric 5a are fixed to each other by adhesion by applying an adhesive to the joint surface 7C in advance, or by mutual welding between the joint surface 7C and the contact surface of the raw fabric 5a. . In addition, the original fabric 5a
When glass wool is used as the adhesive, adhesion to the adhesive is preferred from the viewpoint of adhesion strength.

In addition, in the following, only the insulator hood attached to the bonnet 1~ has been explained, but the insulator hood attached to the dash panel that separates the engine room and the passenger compartment is the insulator hood attached to the dash front. Of course, the present invention is also applicable in the same manner.

[Brief explanation of drawings]

Figures 1 (a) and (b) show an embodiment of the insillator hood according to the present invention, and (a) is an explanatory diagram of the mounting structure;
(b) is an explanatory diagram showing the state after installation, Fig. 2 is an explanatory diagram showing one embodiment of the method of the present invention, and Figs. 3 (a) and (b)
FIG. 2 is an explanatory view of the back side of the hood and an explanatory view showing a conventional insicolator hood mounting structure. 1... Bonnet 2... Rain hose 3... Locking hole 5... Hood insulator 5a... Original fabric of insulator hood 6...・・・
Mounting hole 7... Resin clip 7a... Anchor part 7b... Locking part 7a... Joint surface 8... Upper die 9... Lower die 10・・・・・・Clip seating part patent applicant Kasai Kogyo Co., Ltd.

Claims (2)

[Claims] (1) In an insulator hood that is locked and fixed to the locking hole of the rain hose on the back of the bonnet via a resin clip, the resin clip is integrally fixed to the insulator hood by adhesive or heat welding. An insulator hood featuring (2) The preheated insulator hood material is
In the method for manufacturing an insulator hood that is molded using a top mold and a bottom mold, a cliplet edging device is used in which a resin clip is seated on a clip seating portion formed on a molding convex portion of the bottom mold with the joint surface of the resin clip facing upward. A fabric setting process for inserting the culm, the preheated insulator hood fabric between the upper mold and the lower mold, and a molding process of the upper and lower molds with the insulator hood raw fabric interposed therein. A method for manufacturing an insulator hood, comprising a press molding step of tightening and press molding while heating, and adhering or heat welding the joint surface of the resin clip to the original insulator hood.