JP2007276545A - Fuel tank guard - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To efficiently recover fuel in a fuel tank. <P>SOLUTION: Since there is an interval between a fuel tank 12 and a bottom 102 of a fuel tank guard 100, part of fuel flowing from a hole 14 in the fuel tank 12 comes into contact with an inner surface 102B around a fuel extracting hole 106. The fuel came into contact with the inner surface 102B is prevented from further flowing outward by a projection 122 provided around the fuel extracting hole 106. The fuel is guided by a guide part 124 projected outward from the edge of the fuel extracting hole 106 to flow downward. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a fuel tank guard that covers at least a bottom surface of a fuel tank attached to a vehicle.

  When a car is dismantled, the fuel is extracted from a fuel tank containing fuel such as gasoline or light oil in order to prevent environmental pollution and to ensure work safety. As a method for extracting fuel, generally, a hole is made in the bottom surface of the fuel tank using a drilling tool, and fuel is discharged from the hole and collected in an appropriate tank.

  In addition, there is a marking on the bottom of the fuel tank that shows the position of drilling with a drilling tool, and a configuration that allows easy and reliable drilling to an appropriate location without depending on the skill level of the operator is proposed. Has been. (For example, see Patent Document 1).

  Some four-wheel drive vehicles have a configuration in which the fuel tank is covered with a fuel tank guard in order to protect the fuel tank. (For example, see Patent Document 2).

In the case where the fuel tank is covered with the fuel tank guard in this way, a fuel recovery jig is inserted through the fuel tank guard's lightening hole, a hole is made in the fuel tank, and the fuel flows down from the lightening hole for recovery. is doing.
JP 2004-9827 A JP 2003-285393 A

  However, when the fuel flows out from the hole formed in the fuel tank, the fuel hits the inner surface of the fuel tank guard on the fuel tank side and flows along the inner surface. For this reason, the fuel flows down from other than the lightening holes corresponding to the holes opened in the fuel tank. Therefore, the fuel cannot be recovered efficiently.

  Further, if a hole is made in the fuel tank after removing the fuel tank guard, such a situation does not occur, but the working efficiency decreases.

  The present invention has been made to solve the above-described problem, and efficiently recovers fuel in a fuel tank even if it has a fuel tank guard that covers at least the bottom surface of the fuel tank attached to the vehicle. With the goal.

  In order to achieve the above object, a fuel tank guard according to claim 1 covers a bottom surface of a fuel tank attached to a vehicle and is disposed at an interval in the fuel tank height direction with respect to the bottom surface. And a fuel extraction hole provided in the bottom part, and a convex part provided around the fuel extraction hole in the bottom part and projecting toward the fuel tank.

  In the fuel tank guard according to the first aspect, the fuel extraction hole is provided in the bottom portion that covers the bottom surface of the fuel tank attached to the vehicle. A convex portion protrudes toward the fuel tank around the bottom fuel removal hole.

  When removing fuel from the fuel tank, a jig is inserted from the fuel removal hole at the bottom of the fuel tank guard, a hole is made in the fuel tank, and the fuel is allowed to flow out from this hole. The spilled fuel flows down from the fuel extraction hole and is collected in a collection container such as a tray.

  At this time, since the bottom portion of the fuel tank guard is disposed at a distance in the fuel tank height direction with respect to the bottom surface of the fuel tank, a part of the fuel flowing out from the hole opened in the fuel tank is part of the fuel tank guard. It hits the circumference of the fuel extraction hole at the bottom. The fuel that has hit the periphery of the fuel extraction hole is prevented from flowing further outward by the convex portion provided around the fuel extraction hole.

  Accordingly, the fuel that has flowed out of the hole into the fuel tank does not flow between the fuel tank and the bottom of the fuel tank guard but flows down from the fuel extraction hole. Therefore, the fuel tank guard can be recovered without removing the fuel tank and without taking the fuel. That is, the fuel in the fuel tank can be efficiently recovered.

  A fuel tank guard according to a second aspect of the present invention is the fuel tank guard according to the first aspect, wherein the convex portion is provided on the entire circumference of the fuel extraction hole.

  In the fuel tank guard according to the second aspect, the convex portion is provided on the entire circumference of the fuel extraction hole. Therefore, it is more reliably prevented that the fuel hitting the periphery of the fuel extraction hole flows outside.

  According to a third aspect of the present invention, in the fuel tank guard according to the first or second aspect, the bottom portion is made of sheet metal, and a concave portion is formed on the outer surface of the bottom portion on the side opposite to the fuel tank. The protrusions projecting toward the fuel tank are formed.

  In the fuel tank guard according to the third aspect, the concave portion is formed on the outer surface of the bottom portion opposite to the fuel tank, so that the convex portion easily protruding toward the fuel tank side is formed.

  Further, this recess serves as a mark for the fuel extraction hole.

  The fuel tank guard according to claim 4 covers a bottom surface of a fuel tank attached to a vehicle, and has a bottom portion disposed at an interval in the fuel tank height direction with respect to the bottom surface, and a bottom portion of the fuel tank guard. And a guide portion that is provided at an edge of the fuel extraction hole at the bottom and protrudes on the opposite side of the fuel tank.

  In a fuel tank guard according to a fourth aspect of the present invention, a fuel extraction hole is provided in a bottom portion that covers the bottom surface of the fuel tank attached to the vehicle. At the edge of the fuel extraction hole in the bottom portion, a guide portion that protrudes on the opposite side to the fuel tank is provided.

  When removing fuel from the fuel tank, a jig is inserted from the fuel removal hole at the bottom of the fuel tank guard, a hole is made in the fuel tank, and the fuel is allowed to flow out from this hole. The spilled fuel flows down from the fuel extraction hole and is collected in a collection container such as a tray.

  At this time, the fuel that has flowed out flows down through the guide portion that protrudes from the edge of the fuel extraction hole to the side opposite to the fuel tank. Therefore, the fuel that flows down can be efficiently collected in the collection container.

  Further, this guide portion serves as a mark for the fuel extraction hole.

  According to a fifth aspect of the present invention, in the fuel tank guard according to the fourth aspect, the guide portion is provided on the entire circumference of the fuel extraction hole.

  In the fuel tank guard according to the fifth aspect, the guide portion is provided on the entire circumference of the fuel extraction hole. Therefore, the fuel surely flows down along the guide portion.

  The fuel tank guard according to claim 6 is the configuration according to any one of claims 1 to 5, wherein the bottom portion is provided with a plurality of lightening holes, and a plurality of the lightening holes are provided. One or more of the fuel extraction holes are used as the fuel extraction hole.

  In the fuel tank guard according to the sixth aspect of the present invention, a plurality of lightening holes are provided in the bottom portion, for example, for weight reduction. One or more of the plurality of lightening holes are used as fuel extraction holes.

  By forming a protrusion around the fuel extraction hole, the fuel that has flowed out of the fuel tank hole flows between the fuel tank and the bottom of the fuel tank guard, and other meat that is not the fuel extraction hole. The fuel is prevented from flowing down from the hole.

  In addition, since the recesses around the fuel extraction holes and the guide portions at the edges serve as marks, it is possible to easily identify the target fuel extraction hole even if there are a plurality of light extraction holes.

  As described above, according to the present invention, since the above-described configuration is adopted, there is an effect that the fuel in the fuel tank can be efficiently recovered.

  Hereinafter, an example of an embodiment of the present invention will be described with reference to the drawings. In each figure, an arrow UP indicates the upper side of the vehicle.

  As shown in FIG. 1, a fuel tank 12 containing liquid fuel such as gasoline or light oil is attached to a frame 10 of a vehicle body such as a four-wheel drive vehicle. And the fuel tank guard 100 which concerns on embodiment of this invention is attached to the flame | frame 10 so that the outer side of this fuel tank 12 may be covered. The fuel tank guard 100 is attached for the purpose of protecting the fuel tank 12.

  As shown in FIG. 2, the fuel tank guard 100 has a box shape with an open top. Flange 152,154 for attaching to the flame | frame 10 (refer FIG. 1) is formed in the upper end part of the fuel tank guard 100. FIG. The fuel tank guard 100 is manufactured by press-molding a sheet metal. Further, as shown in FIG. 4, the bottom portion 102 of the fuel tank guard 100 is disposed at a distance from the bottom surface 12 </ b> A of the fuel tank 12 in the height direction of the fuel tank 12. (There is a gap between the fuel tank 12 and the fuel tank guard 100).

  As shown in FIGS. 1 to 4, a plurality of lightening holes 104 are formed in the bottom portion 102 of the fuel tank guard 100 covering the bottom surface 12 </ b> A of the fuel tank 12 for weight reduction and the like. One of the lightening holes 104 is a fuel extraction hole 106.

  As shown in FIGS. 1 to 3, a rib 110 is formed at the bottom 102 of the fuel tank guard 100 along the longitudinal direction of the fuel tank guard 100.

  As shown in FIGS. 1, 3, and 4, there is a fuel extraction hole 106 around the fuel extraction hole 106 on the outer surface 102 </ b> A of the bottom 102 of the fuel tank guard 100 opposite to the fuel tank 12. Concave circle 120 is formed concentrically.

  Therefore, as shown in FIGS. 2 and 4, a convex portion 122 corresponding to the concave portion 120 of the outer surface 102 </ b> A is formed on the inner surface 102 </ b> B on the fuel tank 12 side of the bottom portion 102 of the fuel tank guard 100. That is, the convex portion 122 is formed concentrically with the fuel extraction hole 106 around the fuel extraction hole 106 on the inner surface 102 </ b> B of the bottom portion 102 of the fuel tank guard 100.

  Further, as shown in FIGS. 1 to 4, a guide portion 124 that protrudes on the opposite side of the fuel tank 12 is formed at the edge of the fuel extraction hole 106 in the bottom portion 102 of the fuel tank guard 100. The guide portion 124 is formed on the entire circumference of the fuel extraction hole 106.

  Note that the lightening hole 104 that is not the fuel extraction hole 106 does not have the concave portion 120 and the convex portion 122 around it, and does not have the guide portion 124 at the edge.

  Next, the operation of extracting fuel from the fuel tank 12 in the vehicle disassembly process will be described.

  As shown in FIG. 1, a tapped screw-shaped fuel extraction jig 160 having a diameter smaller than the diameter of the fuel extraction hole 106 is inserted into the fuel extraction hole 106 in the bottom 102 of the fuel tank guard 100. As shown in FIG. 5, a hole 14 is made by piercing the bottom surface 12 </ b> A of the fuel tank 12. Note that a step drill, a hole saw, or the like may be used as the fuel extraction jig instead of a dedicated jig.

  At this time, a recess 120 is formed around the fuel extraction hole 106, and a guide portion 124 protrudes from the edge of the fuel extraction hole 106 (see also FIGS. 1 and 3). Therefore, the fuel extraction jig 160 is not mistakenly inserted into the other lightening holes 104.

  In the fuel tank 12, a fuel pump (not shown), a sound insulation baffle (not shown), and the like are provided. In order to remove the fuel satisfactorily, it is necessary to make a hole 14 at an appropriate position on the bottom surface 12A of the fuel tank 12 so as to avoid the fuel pump and the baffle.

  Therefore, the bottom surface 12A of the fuel tank 12 can be obtained without interfering with the fuel pump, the baffle, etc. in the fuel tank 12 by making the fuel extraction hole 106 an appropriate place avoiding such a fuel pump, baffle, etc. A hole 14 can be formed at an appropriate position.

  Further, as described above, since the concave portion 120 and the guide portion 124 serve as marks, the fuel extraction jig 160 is mistakenly inserted into the other lightening holes 104, and the holes 14 are formed in the bottom surface 12A of the fuel tank 12 which are not appropriate. There is no end.

  Note that even if a mark is provided around the fuel extraction hole 106 as a mark, for example, with a seal or paint, it may be difficult to recognize due to aging or dirt. On the other hand, the concave portion 120 and the guide portion 124 can maintain the display function almost permanently.

  As shown in FIG. 5, the fuel extraction jig 160 is pulled out after piercing the bottom surface 12 </ b> A of the fuel tank 12, so that the fuel flows out from the hole 14 of the fuel tank 12. The spilled fuel flows down from the fuel extraction hole 106 and is collected in a collection container (not shown) such as a tray.

  At this time, since the fuel tank 12 and the bottom 102 of the fuel tank guard 100 are spaced apart, a part of the fuel flowing out from the hole 14 of the fuel tank 12 hits the inner surface 102 </ b> B around the fuel extraction hole 106. The fuel that has hit the inner surface 102 </ b> B is prevented from flowing further outward by the convex portion 122 provided around the fuel extraction hole 106. Then, the fuel flows down the guide portion 124 protruding outward from the edge of the fuel extraction hole 106 and flows down.

  Therefore, the fuel flowing out from the hole 14 of the fuel tank 12 hits the inner surface 102B of the fuel tank guard 100 and is prevented from flowing along the inner surface 102B. Therefore, it is possible to prevent the fuel from flowing down from the other hole 104 in the bottom 102 of the fuel tank guard 100 or collecting in the fuel tank guard 100. In addition, since the fuel flows down the guide portion 124, the fuel is easily collected in a collection container (not shown) such as a tray.

  Next, the operation of this embodiment will be described.

  As described so far, when removing fuel in the dismantling process of an automobile, the fuel tank guard 100 is not removed, and the fuel is not easily taken out by the convex part 122 and the guide part 124 without fail. it can.

  In addition, since the convex portion 122 and the guide portion 124 are formed on the entire circumference of the fuel extraction hole 106, the convex portion 122 can more reliably prevent the fuel that has hit the periphery of the fuel extraction hole 106 from flowing outward. In addition, the fuel surely travels along the guide portion 124 and flows down.

  Further, since the guide portion 124 and the concave portion 120 for forming the convex portion 122 serve as marks, the fuel tank 12 is not affected by the skill level of the operator (without being mistaken for the other lightening holes 104). A hole 14 can be made at an appropriate location on the bottom surface 12A.

  In addition, this invention is not limited to said embodiment.

  For example, in the present embodiment, both the convex portion 122 and the guide portion 124 are provided on the bottom portion 102 of the fuel tank guard 100. However, only one of them may be provided.

  Further, for example, in the above embodiment, the number of the fuel extraction holes 106 is one, but may be two or more.

  Further, for example, in the above embodiment, the fuel tank guard 100 is manufactured by press-molding a sheet metal, but is not limited thereto. Any material and manufacturing method may be used. For example, it may be cast-molded or may be a resin molded product other than metal.

It is the disassembled perspective view which looked at the vehicle to which the fuel tank guard which concerns on embodiment of this invention is attached from the bottom. It is a perspective view of the fuel tank guard which concerns on embodiment of this invention. It is a top view of the outer surface of the bottom part of the fuel tank guard which concerns on embodiment of this invention. It is a figure of the AA cross section of FIG. FIG. 5 is an enlarged view of the vicinity of a fuel extraction hole in FIG. 4.

Explanation of symbols

DESCRIPTION OF SYMBOLS 12 Fuel tank 12A Bottom surface 100 Fuel tank guard 102 Bottom part 102A Outer surface 104 Meat removal hole 106 Fuel extraction hole 120 Concave part 122 Convex part 124 Guide part

Claims (6)

Covering the bottom surface of the fuel tank attached to the vehicle, and a bottom portion arranged at an interval in the fuel tank height direction with respect to the bottom surface;
A fuel extraction hole provided in the bottom;
A convex portion provided around the fuel extraction hole in the bottom portion and protruding toward the fuel tank;
A fuel tank guard characterized by comprising:   The fuel tank guard according to claim 1, wherein the convex portion is provided on an entire circumference of the fuel extraction hole. The bottom is made of sheet metal,
3. The fuel tank according to claim 1, wherein the convex portion that protrudes toward the fuel tank is formed by forming a concave portion on an outer surface of the bottom portion opposite to the fuel tank. 4. guard. Covering the bottom surface of the fuel tank attached to the vehicle, and a bottom portion arranged at an interval in the fuel tank height direction with respect to the bottom surface;
A fuel extraction hole provided in the bottom;
A guide portion provided at an edge of the fuel extraction hole in the bottom portion and protruding to the opposite side of the fuel tank;
A fuel tank guard characterized by comprising:   The fuel tank guard according to claim 4, wherein the guide portion is provided on the entire circumference of the fuel extraction hole. The bottom is provided with a plurality of lightening holes,
6. The fuel tank guard according to claim 1, wherein at least one of the plurality of lightening holes is used as the fuel extraction hole. 6.

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