JP2015098310A - Fuel tank installation structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a fuel tank installation structure capable of stably supporting a fuel tank with a tank band.SOLUTION: A tank band 20 has its band extension part 24 extended obliquely upward to a vehicle front from a corner support part 26 to a vehicle body fixation part 22 so as to couple the corner support part 26 and vehicle body fixation part 22 together. The band extension part 24 has an S-shaped curve part 23 formed on the side of the corner support part 26, and also has a linear part 24C formed on the side of the vehicle body fixation part 22. The S-shaped curve part 23 has a convex curve part 23A and a concave curve part 23B. The convex curve part 23A is formed continuously from the corner support part 26, and curved gently convexly toward a fuel tank 12. The concave curve part 23B is formed continuously from an upper end of the convex curve part 23A and curved gently concavely on the side of the fuel tank 12.

Description

  The present invention relates to a fuel tank mounting structure for mounting a fuel tank to a vehicle body using a tank band.

  Conventionally, various structures for attaching a fuel tank of an automobile to a vehicle body using a tank band have been proposed. For example, Patent Document 1 discloses a configuration in which both ends of a tank band are attached to a vehicle body, and a fuel tank is sandwiched between the vehicle body and the tank band. Moreover, in patent document 1, in order to avoid interference with the flange of a fuel tank and a tank band, the attachment position to the vehicle body of a tank band is set in the position away from the fuel tank.

  However, if the mounting position of the tank band to the vehicle body is set at a position away from the fuel tank as in Patent Document 1, the angle of the tank band with respect to the lower surface of the fuel tank becomes shallow, and the support of the fuel tank becomes unstable. Can be considered.

Japanese Utility Model Publication No. 62-135636

  In view of the above facts, an object of the present invention is to obtain a fuel tank mounting structure that can stabilize support of a fuel tank using a tank band.

  According to a first aspect of the present invention, there is provided a fuel tank mounting structure including a fuel tank that contains fuel, a lower support portion that supports a lower surface of the fuel tank, and a lower surface and side surfaces of the fuel tank that are continuous with the lower support portion. A corner support portion that supports a corner portion between the corner support portion, a vehicle body fixing portion that is disposed above the corner support portion and is fixed to the vehicle body, and the corner support portion that extends from the corner support portion to the vehicle body fixing portion. And a vehicle body fixing portion, a convex curve portion that curves so as to protrude toward the fuel tank side from the corner support portion, and the fuel tank formed on the vehicle body fixing portion side with respect to the convex curve portion A tank band having a band extending portion formed with a concave curved portion that is curved so as to be concave, and a tank band for attaching the fuel tank to the vehicle body.

  In this fuel tank mounting structure, the fuel tank is supported by the lower support portion and the corner support portion of the tank band, the band extension portion extends from the corner support portion to the vehicle body fixing portion, and is fixed to the vehicle body by the vehicle body fixing portion. Yes. The band extending portion includes a convex curved portion that curves so as to be convex from the corner support portion toward the fuel tank side, and a concave curved shape that is formed above the convex curved portion and curves so that the fuel tank side is concave. The part is formed.

  By forming the convex curved portion, the angle of the extended portion of the band extending portion from the corner support portion with respect to the lower surface of the fuel tank becomes deep, and the fuel tank can be stably supported. Further, since the concave curved portion is formed, the flange portion protruding outward from the side surface of the fuel tank is disposed at a position corresponding to the concave curved portion, thereby suppressing interference between the flange portion and the tank band. be able to.

  Since the present invention is configured as described above, the fuel tank can be stably supported by the tank band.

It is a figure which expands and shows the fuel tank mounting structure of embodiment of this invention in the corner | angular part of a fuel tank, and its vicinity.

  Hereinafter, a fuel tank mounting structure according to an embodiment of the present invention will be described with reference to the drawings. In the drawing, the upper side of the vehicle is indicated by an arrow UP, and the front side of the vehicle is indicated by an arrow FR.

  In the present embodiment, the fuel tank 12 is formed in a substantially rectangular parallelepiped box shape and can accommodate fuel therein. The fuel tank 12 is formed by joining two vertically divided tank members with a flange portion 14. A lower surface 12 </ b> A is formed outside the bottom wall of the fuel tank 12. A side surface 12 </ b> B is formed outside the side wall of the fuel tank 12. The flange portion 14 protrudes from the side surface 12B in a substantially vertical direction. A corner 12C is formed between the lower surface 12A and the side surface 12B. The corner 12C has an R shape.

  The fuel tank 12 is attached to the vehicle body 40 by a tank band 20. 1 shows only the front side of the fuel tank 12, the rear side of the fuel tank 12 has the same configuration. A plurality of tank bands 20 are provided, and the fuel tank 12 is attached to the vehicle body 40 at a plurality of locations.

  The tank band 20 has a long plate shape, vehicle body fixing portions 22 are formed at both ends in the long direction, and a lower support portion 28 is formed at the central portion in the long direction. Further, a corner support portion 26 is formed outside the lower support portion 28 in the longitudinal direction, and a band extending portion 24 is formed between the corner support portion 26 and the vehicle body fixing portion 22. A cushion material 30 is adhered to and covered with the cushion material 30 on the upper surface side of the lower support portion 28, the corner support portion 26, and the band extending portion 24 of the tank band 20. The tank band 20 can be formed of a metal material, and the cushion material 30 can be formed of a rubber material.

  The lower support portion 28 is disposed in close contact with the lower surface 12A of the fuel tank 12 via the cushion material 30, and supports the lower surface 12A of the fuel tank 12 from below. The corner support portion 26 has a shape along the corner portion 12 </ b> C of the fuel tank 12, is closely attached to the corner portion 12 </ b> C of the fuel tank 12 via the cushion material 30, and supports the corner portion 12 </ b> C of the fuel tank 12. .

  The vehicle body fixing portion 22 is disposed in close contact with the lower surface of the position of the vehicle body 40 (hereinafter referred to as “fixing portion 42”) above the corner support portion 26 and away from the side surface 12 </ b> B of the fuel tank 12. The vehicle body fixing portion 22 and the fixing portion 42 are formed with through holes 44 that penetrate these members. The bolt 46 is inserted into the through hole 44 from the lower side through the washer 46A, and is screwed and fastened to the nut 48 on the upper side of the fixing portion 42. As a result, the vehicle body fixing portion 22 is fixed to the vehicle body 40. In addition, the vehicle body fixing | fixed part 22 may be fixed to the vehicle body 40 via other members, such as a bracket.

  The band extending portion 24 extends obliquely upward and forward from the corner support portion 26 to the vehicle body fixing portion 22, and connects the corner support portion 26 and the vehicle body fixing portion 22. In the band extending portion 24, an S-shaped curved portion 23 is formed on the corner support portion 26 side, and a straight portion 24C is formed on the vehicle body fixing portion 22 side. The S-shaped curved portion 23 has a convex curved portion 23A and a concave curved portion 23B. The convex curved portion 23A is continuously formed from the corner support portion 26 and is curved so as to be a gentle convex toward the fuel tank 12 side. The concave curved portion 23B is continuously formed from the upper end of the convex curved portion 23A, and is curved so that the fuel tank 12 side is a gentle concave. The concave curved portion 23B is disposed at a position corresponding to the flange portion 14 of the fuel tank 12, that is, a position overlapping the flange portion 14 in the horizontal direction. A straight portion 24 </ b> C is formed above the concave curved portion 23 </ b> B of the band extending portion 24 and extends to the vehicle body fixing portion 22.

  Assuming a straight line SL extending linearly from the longitudinal inner end 22A of the vehicle body fixing portion 22 to the corner portion 12C, the convex curved portion 23A is convex to the fuel tank 12 side than the straight SL, and the concave curved portion 23B is convex on the opposite side of the fuel tank 12 from the straight line SL. If the angle formed by the straight line SL and the lower surface 12A is θ1, and the angle formed by the incident portion of the convex curved portion 23A on the corner portion 12C and the lower surface 12A is θ2, then θ1 <θ2.

  Next, the operation of the fuel tank mounting structure 10 of this embodiment will be described.

  In the fuel tank 12, the lower surface 12 </ b> A and the corner portion 12 </ b> C are supported from below by the lower support portion 28 and the corner support portion 26 of the tank band 20. The vehicle body fixing portion 22 of the tank band 20 is fixed to the vehicle body 40 by bolts 46, and the fuel tank 12 is attached to the vehicle body 40.

  In the present embodiment, the band extending portion 24 of the tank band 20 is formed with the concave curved portion 23B, so that the distance between the flange portion 14 of the fuel tank 12 and the tank band 20 can be increased. Therefore, interference between the two can be suppressed without disposing another member (for example, a bracket or the like) between the tank band 20 and the flange portion 14.

  Further, since a convex curved portion 23A is formed in the band extending portion 24 of the tank band 20, the angle θ2 formed by the incident portion of the convex curved portion 23A on the corner 12C and the lower surface 12A of the fuel tank 12 is set. Can be bigger. Therefore, the angle of the tank band 20 with respect to the lower surface 12A of the fuel tank 12 becomes deep, the fuel tank 12 can be positioned, and the fuel tank 12 can be stably supported.

  Moreover, in this embodiment, since the S-shaped curved part 23 is formed in the band extension part 24 of the tank band 20, the spring effect can be exhibited at the time of vibration input. Therefore, the distortion and stress of the tank band 20 can be reduced. As a result, it is possible to reduce the thickness of the tank band 20.

  Furthermore, by forming the S-shaped curved portion 23, the rigidity of the tank band 20 in the rotational direction (indicated by R in the figure) can be increased. Therefore, the twist of the tank band 20 at the time of fastening of the bolt 46 can be reduced, and the accuracy of the position where the convex curved portion 23A and the concave curved portion 23B should be arranged is improved. Thereby, while being able to position and support the fuel tank 12 correctly, the distance with the flange part 14 can be ensured reliably.

DESCRIPTION OF SYMBOLS 10 Fuel tank mounting structure 12 Fuel tank 12A Lower surface 12B Side surface 12C Corner | angular part 20 Tank band 22 Car body fixing | fixed part 23A Convex curved part 23B Concave curved part 24 Band extension part 26 Corner | angular support part 28 Lower support part 40 Car body

Claims (1)

A fuel tank containing fuel;
A lower support portion that supports the lower surface of the fuel tank, a corner support portion that is continuous with the lower support portion and supports a corner portion between the lower surface and the side surface of the fuel tank, and is disposed above the corner support portion. A vehicle body fixing portion fixed to the vehicle body, and extending from the corner support portion to the vehicle body fixing portion, connecting the corner support portion and the vehicle body fixing portion, and projecting from the corner support portion toward the fuel tank side And a band extending portion formed with a concave curved portion formed on the vehicle body fixing portion side with respect to the convex curved portion and curved so as to be concave on the fuel tank side. A tank band for attaching the fuel tank to the vehicle body;
Fuel tank mounting structure with

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