JPH0446209B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION a. Field of Industrial Application The present invention relates to a method of manufacturing a vehicle engine service hole cover.

b. Prior art In general, in vehicles such as cab-over vehicles where the engine is installed below the driver's cab,
An engine service hole is provided in the floor panel for engine repair and inspection, and the engine service hole is covered with a removable cover. Since this cover partitions the vehicle interior and the engine room, it is configured to block heat and vibration noise from the engine. For example, as shown in FIG.
1 and the engine room side panel 52 are fixed to each other by welding at the peripheral edges of both ends to form an air layer 53 in the middle part, and the engine room side panel 5
A pair of elastic sealants 54 for sealing the engine service hole are adhered to the back surface of the engine service hole along the periphery of the end portion 2, and a urethane foam (insulating material ) 56 is glued.

c Problems to be Solved by the Invention However, in the conventional vehicle engine service hole cover 50, the vehicle compartment side panel 51 and the engine compartment side panel 52 are welded, and the engine compartment side panel 52 is welded together. Since the aluminum foil-attached urethane foam 56 must be uniformly adhered to the back surface of the aluminum foil, there are problems in that the work is complicated and the cost of the parts increases.

The present invention has been made to solve the problems of the prior art described above, and its gist is to provide a panel, a foamed urethane layer attached to one side of the panel, and a foamed urethane layer attached to the surface of the foamed urethane layer. In the method of manufacturing an engine service hole cover for a vehicle, the urethane foam is sprayed on one side of the panel, and before the urethane foam is foamed, the foil material for insulation is applied on the urethane foam layer. In this state, the heat insulating foil material is pressed against the foamed urethane layer side using a press mold, and after the mold is clamped, foam molding is performed.

d. Means for Solving the Problems The present invention will be described in detail below based on illustrated embodiments.

1 and 2 show one embodiment of the present invention, and in the figures, 1 is a floor panel of a cab-over type automobile, and 2 is provided on the floor panel 1 corresponding to an engine installed below the driver's cab. 3 is a removable engine service hole cover that covers the engine service hole 2. This cover 3 includes a panel 4 press-molded into a shape corresponding to the external shape of the floor panel 1 around the engine service hole 2, a foamed urethane layer 5 attached to the back surface of the panel 4, and a foamed urethane layer 5 attached to the back surface of the panel 4. It has a three-layer structure consisting of an aluminum foil 6 attached to the back surface of the aluminum foil 6. The foamed urethane layer 5 is placed between a pair of elastic sealants 7 bonded along the edge of the back surface of the panel 4, and the service hole 2 is sealed by the elastic sealant 7. ing.

The cover 3 is arranged with the panel 4 facing the passenger compartment A side and the aluminum foil 6 facing the engine compartment B side, and the panel 4 corresponding to the elastic sealing material 7 is attached to the floor panel 1 by bolts 8 and nuts 9. It is attached to the vehicle body by tightening and fixing it.

The cover 3 having the above structure is manufactured according to the following manufacturing procedure.

First, the panel 4 press-molded into a predetermined shape is placed on the upper surface of the lower mold 10 with the surface facing the vehicle interior A facing downward (see FIG. 2a). Next, foamed urethane (for example, a stirred mixture of a polyol liquid and an isocyanate liquid) is sprayed onto the upper surface of the panel 4 through the nozzle 11 from a foamed urethane supply means (not shown) (see FIG. 2b). Before foaming the urethane foam, a flat plate of aluminum foil 6 is placed on top of the urethane foam (see FIG. (see Figure 2 d), then press the upper mold 12 in the direction of the arrow by a conventional means, and press the panel 4, the foamed urethane layer 5, and the aluminum foil 6 into the lower mold 10 and the upper mold 1.
At the same time, the mold is clamped in step 2, the foamed urethane is foamed and cured, and the foamed urethane layer 5 and aluminum foil 6 are simultaneously molded and integrally attached to the panel 4, thereby manufacturing the cover 3.

Although one embodiment of the present invention has been described above, the present invention is not limited to the embodiment described above, and various modifications and changes can be made based on the technical idea of the present invention.

e. Effects of the Invention As described above, the method for manufacturing a vehicle engine service hole cover according to the present invention includes simultaneously molding a foamed urethane layer and a heat-insulating foil material on a panel constituting a three-layer structure and attaching them integrally. Therefore, the step of adhering the urethane foam layer and the heat insulating foil material to the panel can be omitted. Furthermore, the degree of freedom in shape is increased, a cover with excellent sound and heat insulation effects can be obtained, work efficiency can be increased, and it is advantageous in terms of design.

In addition, with the cover manufactured by the manufacturing method of the present invention, unlike conventional covers, there is no need to provide an additional panel on the indoor side, and the welding process with the panel can also be omitted, resulting in lower component costs. The weight can be reduced and the weight can be reduced.

[Brief explanation of the drawing]

FIG. 1 is a longitudinal cross-sectional view showing the assembled state of a vehicle engine service hole cover manufactured by an embodiment of the manufacturing method according to the present invention, and FIG. 2 shows the manufacturing process of the cover. Figure 2a is a side view of the process of installing the panel on the lower mold, Figure 2b is a side view of the process of spraying foamed urethane on the top surface of the panel, and Figure 2c is a side view of the process of spraying foamed urethane on the top of the above panel. A side view of the process, FIG. 2 d is a side view of the process of pressing the aluminum foil against the urethane foam layer side with an upper die, simultaneously molding the urethane foam layer and the aluminum foil on the panel, and adhering them integrally; FIG. 3 is a longitudinal sectional view showing an assembled state of a vehicle engine service hole cover manufactured by a conventional method. DESCRIPTION OF SYMBOLS 1...Floor panel, 2...Engine service hole, 3...Vehicle engine service hole cover, 4...Panel, 5...Urethane foam layer, 6
...Foil material for insulation.

Claims (1)

[Claims] 1. A method for producing a vehicle engine service hole cover comprising a panel, a foamed urethane layer attached to one side of the panel, and a heat insulating foil material attached to the surface of the foamed urethane layer. Before spraying foamed urethane and foaming the foamed urethane, a heat insulating foil material is placed on top of the foamed urethane layer, and in this state, the heat insulating foil material is pressed onto the foamed urethane layer side with a press die. After mold clamping,
A method for manufacturing a vehicle engine service hole cover, which is characterized by foam molding.