JPH06117272A - Fuel tank made of resin - Google Patents

Abstract

PURPOSE:To prevent any explosion caused by the abnormal rise in the internal pressure of a fuel tank made of resin due to fires or the like, and improve the safety of the fuel tank made of resin. CONSTITUTION:Through holes are formed in a metallic plate 2 mounted on the upper surface of a fuel tank made of resin, and a lid member 7 closes the through holes by soldering the lid member 7 with a low fusing point alloy to the periphery of the through holes.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a resin fuel tank mounted on a vehicle or the like, and more particularly to a safety device therefor.

[0002]

2. Description of the Related Art In a conventional resin fuel tank mounted on a vehicle, when the outer surface is heated during a vehicle fire, the resin cap is melted and the internal pressure is released to the outside, causing the tank to explode. Although it is circumvented, there is a risk that the internal pressure of the tank will rise abnormally due to the delay in heating around the resin cap depending on the condition of the flame.

[0003]

SUMMARY OF THE INVENTION The present invention is intended to prevent an excessive rise in the tank internal pressure by easily forming a vent hole on the outer surface of a resin fuel tank when the outer surface is heated. .

[0004]

Therefore, in the resin fuel tank according to the present invention, the periphery of the through hole is formed by the metal plate attached near the upper surface, the through hole formed in the metal plate and the low melting point alloy. It has a lid member which is soldered to and closes the through hole.

[0005]

Operation: That is, since the lid member is soldered to the through hole of the metal plate attached near the upper surface of the fuel tank by the low melting point alloy, when a vehicle equipped with this fuel tank causes a fire. When the lid member is heated, the low melting point alloy used for soldering is easily melted, and the lid member moves to open the through hole, thus reliably preventing an abnormal rise in the tank internal pressure. It is possible to suppress the occurrence of a catastrophic event such as an explosion of the tank, and also to prevent the fuel for the diesel engine in the tank from flowing out, thereby minimizing the accident.

[0006]

Embodiments of the present invention shown in the drawings will be specifically described below. Resin fuel tank 1 mounted on the vehicle
The mounting metal plate 2 is fixed to the upper surface of the mounting plate by screws 3, the fuel supply pipe 4 and the return pipe 5 are planted in the mounting metal plate 2, and the through holes 6 formed in the mounting metal plate 2 are formed. The periphery of the metallic lid member 7 is soldered to the periphery by a low melting point alloy 8 that melts at about 200 ° C., and the lid member 7 closes the through hole 6. Further, a through hole (not shown) is also formed in the filler neck 9 made of a metal plate attached to the upper corner of the fuel tank 1.
The periphery of the metallic lid member 10 is soldered to the periphery of the through hole by a low melting point alloy that melts at 00 ° C., and the through hole is closed by the lid member 10.

Therefore, in a case where a vehicle equipped with the resin fuel tank 1 has a fire, if any of the lid members 7 and 10 is strongly heated by a flame or the like, they are soldered with a low melting point. Since the alloy 8 and the like are easily melted, the lid members 7 and 10 are moved by the internal pressure of the tank 1 and the like, so that the through holes 6 and the like are opened and the inside of the fuel tank 1 is communicated with the outside air. It is possible to reliably prevent an abnormal pressure rise in the fuel tank 1 due to the occurrence of a great disaster such as an explosion of the fuel tank 1, and to prevent the fuel for the diesel engine from flowing out of the fuel tank 1. It is also possible to prevent the vehicle accidents due to a fire or the like.

Further, since the lid members 7 and 10 are located at positions distant from each other on the outer surface of the fuel tank 1, even if the degree of flame rotation is locally deviated, any one of them close to flame is used. By melting the low melting point alloy 8 and the like, the inside of the fuel tank 1 is communicated with the outside air, so that the safety of the fuel tank 1 against a vehicle fire can be enhanced.

[0009]

In the resin fuel tank according to the present invention, if the lid member is heated by the whole or partial heating, the low melting point alloy used for soldering is easily melted and passed through. Since the holes are opened, it is possible to reliably prevent an abnormal rise in the tank pressure and prevent the occurrence of a catastrophic event such as an explosion of the tank, and also prevent the fuel for the diesel engine from flowing out of the tank. Therefore, there is an advantage that the disaster can always be minimized and the safety of the resin fuel tank can be improved.

[Brief description of drawings]

FIG. 1 is a perspective view of an embodiment of the present invention.

FIG. 2 is an enlarged view of part II in FIG.

3 is an enlarged vertical cross-sectional view taken along the line III-III in FIG.

[Explanation of symbols]

 1 Fuel Tank 2 Metal Plate 6 Through Hole 7 Lid Member 8 Low Melting Alloy 10 Lid Member

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁵ Identification number Office reference number FI technical display location F02M 37/00 F 7049-3G F16K 17/38 A 7504-3H

Claims (1)

[Claims] 1. A resin fuel comprising a metal plate mounted near the upper surface, a through hole formed in the metal plate, and a lid member soldered to the periphery of the through hole by a low melting point alloy to close the through hole. tank.