JP6688474B2 - Vehicle fuel tank mounting structure - Google Patents

Description

  The present invention relates to a vehicle fuel tank mounting structure.

  Patent Document 1 describes a holding device that holds a fuel container on a side member of a vehicle such as a truck. The fuel container includes a cylindrical body portion and a neck portion provided at one end of the body portion, and is arranged along the longitudinal direction of the side member. The neck portion has a flange portion fixed to the body portion, a protrusion having a smaller diameter than the flange portion and protruding from the flange portion, and a male screw portion provided on the outer peripheral surface of the protrusion portion. The holding device includes a body holding member for holding the body of the fuel container, and an engagement member supported by the body holding member and engaged with the neck of the fuel container. The body holding member includes front and rear vehicle body mounting brackets attached to the side members, and a fixing belt for fastening the body portion of the fuel container to the vehicle body mounting bracket. The engaging member extends in the vehicle front-rear direction with a plate portion having a fitting hole into which the neck portion of the fuel container is fitted, one end of which is attached to the plate portion, and the other end of which is attached to the front vehicle body mounting bracket. And two extending portions. Tighten the nut to the external thread of the neck of the fuel container that protrudes from the fitting hole of the plate part, and sandwich the plate part with the flange part and the nut part of the neck part of the fuel container to engage the neck part of the fuel container. It is fixed to the plate part of the mating member. The front engagement member and the nut prevent the fuel container from moving in the vehicle front-rear direction.

JP, 2006-35891, A

  In the holding device described in Patent Document 1, only the front end portion of the front and rear end portions of the fuel container (fuel tank) is fixed to the vehicle body side via the engaging member, so the front and rear direction of the fuel tank (axial direction) Even if the lengths of the fuel tanks differ due to manufacturing error (individual difference), the fuel tank can be fixed to the vehicle body side.

  However, since the front-rear movement of the fuel tank is restricted only by the front end portion, the front-rear movement of the fuel tank cannot be sufficiently restricted compared to the case where the front-rear movement of the fuel tank is restricted by both the front end portion and the rear end portion. there is a possibility.

  Therefore, the present invention regulates the front-rear movement of the fuel tank at both end portions in the front-rear direction, and ensures that the fuel tank is securely attached to the vehicle body side even when the axial length of the fuel tank is different due to individual differences. An object is to provide a fuel tank mounting structure for a vehicle that can be fixed.

In order to solve the above problems, a vehicle fuel tank mounting structure according to the present disclosure includes a first fuel tank, a one-side engaging member, another-side first engaging member, and a first fastening member.

The first fuel tank has a first cylindrical portion having a circular cross-section centered on the first axis, and a pair of front and rear first end surface portions closing both ends of the first cylindrical portion. It is arranged along the direction and supported on the vehicle body side. The one-side engaging member is supported on the vehicle body side on one side in the front-rear direction of the first fuel tank, and engages with the first end surface portion on one side from one side to move to the one side of the first fuel tank. Block. The other-side first engaging member is disposed on the other side in the front-rear direction of the first fuel tank and is engageable with the other-side first end surface portion from the other side. The first fastening member supports the other-side first engagement member on the vehicle body side so as to be movable in the front-rear direction and fastened to one side.

The other-side first engaging member is fastened to one side by the first fastening member and engages the first end surface portion of the other side from the other side, and moves the first fuel tank forward and backward with the one-side engaging member. The first fuel tank is pinched from the direction to fix the first fuel tank to the vehicle body side, and the movement of the first fuel tank to the other side is prevented.
A first aspect of the present invention is a fuel tank mounting structure for a vehicle according to the above disclosure, which includes a second fuel tank, a second-side second engaging member, and a second fastening member member.
The second fuel tank has a second cylindrical portion having a circular cross section centered on the second axis and a pair of front and rear second end surface portions closing both ends of the second cylindrical portion. It is arranged in parallel with the first fuel tank so as to be substantially parallel to the one axis and is supported on the vehicle body side. The other-side second engaging member is formed separately from the other-side first engaging member, is disposed on the other side in the front-rear direction of the second fuel tank, and is disposed on the other-side second end surface portion from the other side. Engageable. The second fastening member supports the second engagement member on the other side on the vehicle body side so as to be movable in the front-rear direction and fastened to one side.
The one-side engaging member is supported on the vehicle body side on one side in the front-rear direction of the first fuel tank and the second fuel tank, and engages with the first end surface portion on one side and the second end surface portion on one side from one side. Thus, the movement of the first fuel tank and the second fuel tank to one side is blocked. The other-side first engaging member is fastened to the one side separately from the other-side second engaging member by the first fastening member. The other-side second engaging member is tightened to the one side separately from the other-side first engaging member by the second fastening member and engages with the other-side second end face portion from the other side, and the one-side engaging member The second fuel tank is sandwiched between the member and the front-rear direction so as to fix the second fuel tank to the vehicle body side and prevent movement of the second fuel tank to the other side.

  In the above configuration, the one side engagement member prevents the first fuel tank from moving in the front-rear direction, and the other side first engagement member prevents the movement of the first fuel tank in the front-rear direction to the other side. Since it is blocked, the front-rear movement of the first fuel tank can be restricted at both ends in the front-rear direction.

  The other-side first engaging member is fastened to one side by the first fastening member and engages with the first end surface portion on the other side from the other side, and the first-side engaging member and the first fuel tank. Since the first fuel tank is fixed to the vehicle body side by sandwiching the first fuel tank from the front-rear direction, even if the axial length (front-rear direction) of the first fuel tank differs due to individual differences, the first fuel tank Can be securely fixed to the vehicle body side.

  In the above structure, the one-side engaging member prevents the first fuel tank and the second fuel tank from moving in the front-rear direction, and the other side of the first fuel tank and the second fuel tank in the front-rear direction. Since the movement is blocked by the other-side first engagement member and the other-side second engagement member, the movement of the first fuel tank and the second fuel tank in the front-rear direction can be reliably regulated.

  The other-side second engaging member is fastened to one side by the second fastening member and engages with the other-side second end surface portion from the other side, and the second-side fuel tank is engaged with the one-side engaging member. Since the second fuel tank is fixed to the vehicle body side by sandwiching the second fuel tank from the front-rear direction, even if the axial length (front-back direction) of the second fuel tank differs due to individual differences, the second fuel tank Can be securely fixed to the vehicle body side.

A second aspect of the present invention is the fuel tank mounting structure according to the first aspect, wherein the supply / discharge port of the first fuel tank and the supply / discharge port of the second fuel tank are provided with a first end surface portion on one side. And the second end face portion.

  In the above structure, one first side engaging member is engaged with the first end surface portion and the second end surface portion on one side from one side, and each of the supply / discharge ports of the first fuel tank and the second fuel tank is one. Since the positioning is performed by one one side engaging member, the relative positions of the two supply / discharge ports are fixed without changing. Therefore, the relative positions of the two pipes connected to each of the two supply / discharge ports can be fixed, and the workability of pipe arrangement can be improved.

A third aspect of the present invention is the fuel tank mounting structure according to the first or second aspect, wherein the front and rear first end surface portions bulge in a curved shape from both ends of the first cylindrical portion. The front and rear second end surface portions bulge in a curved shape from both ends of the second cylindrical portion. The one side engaging member has a circular shape with a diameter smaller than that of the first cylindrical portion, and has one side first engaging hole that engages with the first end surface portion of the one side from one side and a second cylindrical portion. It has a small-diameter circular shape, and a second side engagement hole that engages from one side is formed in the second end surface portion on one side. The other-side first engaging member has a circular shape with a diameter smaller than that of the first cylindrical portion, and the other-side first engaging hole that engages from the other side is formed in the other-side first end surface portion. The other-side second engaging member has a circular shape with a diameter smaller than that of the second cylindrical portion, and the other-side second engaging hole that engages from the other side is formed in the other-side second end surface portion.

  In the above configuration, circular engaging holes may be formed in the one side engaging member, the other side first engaging member, and the other side second engaging member, respectively, so that the structure of each engaging member is simplified. Can be converted.

  According to the present invention, the front and rear movements of the fuel tank are regulated at both end portions in the front and rear direction, and the fuel tank is securely attached to the vehicle body side even when the axial length of the fuel tank is different due to individual differences. Can be fixed.

It is a top view of a truck to which a fuel tank mounting structure according to the present invention is applied. It is a top view of the principal part of FIG. It is a side view of the fuel tank unit of FIG. It is the perspective view which looked at the fuel tank unit of Drawing 2 from the slanting upper back. FIG. 3 is a perspective view of the fuel tank unit of FIG. 2 as viewed obliquely from above and above. FIG. 3 is a perspective view of the tank support bracket on the rear side of FIG. 2 as viewed obliquely from above and rear. FIG. 7 is a sectional view taken along the line VII-VII of FIG. 4. FIG. 3 is a front view of the tank support bracket of FIG. 2.

  An embodiment of the present invention will be described below with reference to the drawings. In each drawing, FR indicates the front of the vehicle, UP indicates the upper side, and IN indicates the inner side in the vehicle width direction. Further, in the following description, the left-right direction means the left-right direction when facing the front of the vehicle.

  As shown in FIG. 1, a vehicle to which the fuel tank mounting structure according to the present embodiment is applied is a natural gas vehicle that drives an engine (not shown) using natural gas as a fuel, and includes a ladder-shaped body frame 2. It is a large truck (vehicle) 1 that has. A cab 5 is mounted above the front end of the vehicle body frame 2. The truck 1 has front wheels (not shown) arranged below both left and right sides of the cab 5, and rear front wheels 6 and rear rear wheels 7 arranged on both left and right sides of the body frame 2 behind the cab 5.

  The body frame 2 includes a pair of left and right side members 3 each having a substantially U-shaped cross section and extending in the vehicle width direction on both sides of the truck 1 in the vehicle width direction, and between the left and right side members 3 extending in the vehicle width direction. It is formed in a ladder shape by a plurality of cross members 4 having a substantially U-shaped cross section that connect the three. Plural (five in this embodiment) fuel tank units are fixed to the left and right side members 3. Two fuel tank units 11 and 90 are fixed to the right side member 3, one between the front wheel and the rear front wheel 6 and one behind the rear rear wheel 7. Two fuel tank units 10, 11, 90 are fixed to the left side member 3 between the front wheel and the rear front wheel 6, and one fuel tank unit 10, 11, 90 behind the rear rear wheel 7. The three fuel tank units 10 and 11 in front of the rear front wheels 6 each include two fuel tanks, and the two fuel tank units 90 behind the rear front wheels 6 each include one fuel tank. Below, the fixing structure of the foremost fuel tank unit 10 fixed to the left side member 3 will be described. The other two fuel tank units 11 including the two fuel tanks have the same structure as the fuel tank unit 10.

  As shown in FIGS. 2 and 3, the fuel tank unit 10 includes a first fuel tank 80, a second fuel tank 81, a pair of front and rear tank support brackets 12F and 12R, and front (one side) movement restriction. A member 14 and a movement restriction member 15 on the rear side (other side) are provided.

  The first fuel tank 80 includes a cylindrical tank body portion (first cylindrical portion) 80a having a circular cross section around the first shaft 82, and a tank body that bulges in a curved shape from both ends of the tank body portion 80a. The tank body portion 80a integrally has a pair of hemispherical front and rear tank end portions (first end surface portions) 80b and 80c that close both ends of the portion 80a, and the tank body portion 80a has the left side member 3 (hereinafter, simply referred to as the side member 3). That is, it is fixed to the front and rear tank support brackets 12F, 12R in a state of extending in the front-rear direction outside the vehicle width direction (a state in which the first shaft 82 is arranged along the front-rear direction). A neck portion (supply / discharge port) 84 is provided at the front end of the front tank end portion 80b. A container main valve 85 for connecting a fuel supply device (not shown) and a fuel pipe (not shown) connected to a gas filling port (not shown) is attached to the neck portion 84. The container valve 85 has a built-in overflow prevention valve and a safety valve.

  The second fuel tank 81 has a cylindrical tank body portion (second cylindrical portion) 81a having a circular cross section around the second shaft 83, and a tank body that bulges in a curved shape from both ends of the tank body portion 81a. It integrally has a pair of hemispherical front and rear tank end portions (second end surface portions) 81b and 81c that close both ends of the portion 81a, and the tank body portion 82a is diagonally outward of the first fuel tank 80 in the vehicle width direction. It is fixed to the front and rear tank support brackets 12F and 12R while extending downward in the front-rear direction (the second shaft 83 is arranged in parallel with the first fuel tank 80 such that the second shaft 83 is substantially parallel to the first shaft 82). It The entire length of the second fuel tank 81 (the length along the second axis 83) is formed to be substantially equal to the entire length of the first fuel tank 80 (the length along the first axis 82). The outer diameter of the tank body 81a is formed larger than that of the tank body 80a of the first fuel tank 80. A neck portion (supply / discharge port) 86 is provided at the front end of the front tank end portion 81b. A container main valve 87 for connecting a fuel supply device (not shown) and a fuel pipe (not shown) connected to a gas filling port (not shown) is attached to the neck portion 86. The container valve 87 has a built-in overflow prevention valve and a safety valve.

  The first fuel tank 80 and the second fuel tank 81 are a metal tank, an aluminum liner composite tank in which an aluminum liner is reinforced with fiber reinforced plastic, or a plastic liner composite tank in which a plastic liner is reinforced with fiber reinforced plastic (all composite). Manufactured tank). In the present embodiment, a composite tank is used for the first fuel tank 80 and a metal tank is used for the second fuel tank 81. That is, the first fuel tank 80 and the second fuel tank 81 are made of different materials and have different thermal expansion coefficients. The natural gas stored in the first fuel tank 80 and the second fuel tank 81 is, for example, compressed natural gas (CNG: Compressed Natural Gas) stored in a high pressure state as a gas, or a fuel container as a cryogenic container in a liquid state. Liquefied Natural Gas (LNG) stored therein, and adsorbed Natural Gas (ANG) stored by being adsorbed by an adsorbent in a fuel container.

  As shown in FIGS. 2 to 8 (particularly FIGS. 6 and 8), the front and rear tank support brackets 12F and 12R include a fixed portion 12a extending in the vertical direction, a support portion 12b extending in the vehicle width direction, and front and rear molds. It is a substantially L-shaped member that integrally has a plate portion 12c, a first support plate portion 12d, and a second support plate portion 12e, and is a tank body portion 80a of the first fuel tank 80 and a second fuel tank. The tank body portion 81a of 81 is spaced from the front-rear direction by a distance shorter than the length of the tank body portion 81a in the front-rear direction.

  The fixing portion 12a extends vertically along the vehicle width direction outer side surface 3a of the side member 3 from the vicinity of the upper end of the side member 3 to a position lower than the side member 3 and extends to the vehicle width direction outer side surface 3a of the side member 3. It is fastened and fixed by a plurality of bolts 19. The support portion 12b extends substantially horizontally outward from the lower end of the fixed portion 12a in the vehicle width direction.

  The front and rear mold plate portions 12c are plate bodies that are spaced apart in the front-rear direction and face each other, and the front mold plate portion 12c is fixed to the front surface of the fixed portion 12a and the front surface of the support portion 12b, and the rear mold portion 12c. The plate portion 12c is fixed to the rear surface of the fixed portion 12a and the rear surface of the support portion 12b. The front and rear template portions 12c each have a curved end edge portion 20 that extends from the vehicle width direction outer side of the upper end portion of the fixed portion 12a to the upper side of the support portion 12b in the vehicle width direction outer side. The upper arc portion 20a and the lower arc portion 20b are formed in a W shape that is vertically aligned (see FIG. 8).

  As shown in FIG. 8, the first support plate portion 12d is a substantially arcuate curved plate along the outer surface of the tank body portion 80a of the first fuel tank 80. The second support plate portion 12e is a substantially arc-shaped curved plate along the outer surface of the tank body portion 81a of the second fuel tank 81. The front and rear end edges of the first support plate portion 12d are fixed to the front and rear upper arc portions 20a, and the front and rear end edges of the second support plate portion 12e are fixed to the front and rear lower arc portion 20b. The first support plate portion 12d supports the tank body portion 80a of the first fuel tank 80, and the second support plate portion 12e is a tank of the second fuel tank 81 obliquely below and outside the first fuel tank 80 in the vehicle width direction. The body 81a is supported.

  The tank body 80a of the first fuel tank 80 is bound to the front and rear tank support brackets 12F and 12R by the first fixing belt 21 while being placed on the first support plate 12d. The tank body 81a of the second fuel tank 81 is bound to the front and rear tank support brackets 12F and 12R by the second fixing belt 22 while being placed on the second support plate portion 12e.

  As shown in FIGS. 6 and 8, the first fixing belt 21 and the second fixing belt 22 are inserted through a belt insertion portion at a portion adjacent to the lower end of the first supporting plate portion 12d and the upper end of the second supporting plate portion 12e. The hole 23 is formed across the first support plate portion 12d and the second support plate portion 12e. Belt connecting plates 24 are fixed to the front and rear mold plate portions 12c inside the belt insertion hole 23.

  The first upper connecting pin 25 is attached to one end of the first fixing belt 21, and the one end of the first fixing belt 21 is connected to the upper end of the fixing portion 12 a via the first upper connecting pin 25. . A first lower connecting pin 26 having a bolt shaft portion 26a is attached to the other end of the first fixing belt 21, and a bolt insertion hole (not shown) is formed in the belt connecting plate 24. By inserting the bolt shaft portion 26a of the first lower connecting pin 26 into the bolt insertion hole, and screwing the nut 27 into the bolt shaft portion 26a protruding obliquely downward from the belt connecting plate 24, the first fixing belt 21 The ends are connected to the belt connecting plate 24. The tank body portion 80a of the first fuel tank 80 is placed on the first support plate portion 12d, the first upper connecting pin 25 is connected to the fixing portion 12a, and the first fixing belt 21 is hooked on the outer periphery of the tank body portion 80a. By passing the bolt shaft portion 26a of the first lower connecting pin 26 through the bolt insertion hole and screwing the nut 27 into the bolt shaft portion 26a to tighten it, the tank body portion 80a of the first fuel tank 80 is supported by the tank. The brackets 12F and 12R are bundled and fixed.

  A second upper connecting pin 28 is attached to the upper end of the second fixing belt 22, and the upper end of the second fixing belt 22 is connected to the belt connecting plate 24 via the second upper connecting pin 28. A second lower connecting pin 29 having a bolt shaft portion 29a is attached to the other end portion of the second fixing belt 22, and a bolt insertion hole 30 is formed at an outer end portion of the support portion 12b in the vehicle width direction. The other end of the second fixed belt 22 is obtained by inserting the bolt shaft portion 29a of the second lower connecting pin 29 into the bolt insertion hole 30 and screwing the nut 31 into the bolt shaft portion 29a protruding downward from the support portion 12b. The portion is connected to the support portion 12b. The tank body 81a of the second fuel tank 81 is placed on the second support plate 12e, the second upper connecting pin 28 is connected to the belt connecting plate 24, and the second fixing belt 22 is attached to the outer periphery of the tank body 81a. By passing the bolt shaft portion 29a of the second lower connecting pin 29 through the bolt insertion hole 30 and screwing the nut 31 onto the bolt shaft portion 29a, the tank body portion 81a of the second fuel tank 81 is It is bound and fixed to the tank support brackets 12F and 12R.

  In the mold plate portion 12c, connecting work of the first fixing belt 21 and the second fixing belt 22 (first lower connecting pin 26 and second upper connecting pin 29) to the belt connecting plate 24 (including fastening work of the nut 27). An opening 32 is formed to allow the tank support brackets 12F and 12R from the front outer side or the rear outer side. The opening 32 may be provided on both the front and rear template portions 12c, or may be provided on only one of them.

  With the first fuel tank 80 fixed to the front and rear tank support brackets 12F and 12R, the front end of the first fuel tank 80 is arranged in front of the front tank support bracket 12F, and the rear end of the first fuel tank 80 The end is arranged behind the rear tank support bracket 12R. Similarly, in the state where the second material tank 81 is fixed to the front and rear tank support brackets 12F and 12R, the front end of the second fuel tank 81 is arranged in front of the front tank support bracket 12F, and the second fuel tank The rear end of 81 is arranged rearward of the rear tank support bracket 12R.

  As shown in FIG. 5, the front movement restricting member 14 has a front engaging plate (one side engaging member) 33 and upper and lower front plate connecting members 34a and 34b.

  The front engagement plate 33 is disposed on the front side of the first fuel tank 80 and the second fuel tank 81 in a posture that intersects with the front-rear direction (a posture that is substantially orthogonal in this embodiment). The front engagement plate 33 integrally includes a polygonal front plate body 35 and a flange portion 36 that is bent backward from the entire outer peripheral edge of the front plate body 35.

  The upper front plate connecting member 34a is fixed to the upper end of the front mold plate portion 12c of the front tank support bracket 12F on the inner side in the vehicle width direction and extends forward, and the front end portion is on the inner side of the front plate body 35 in the vehicle width direction. It is joined to the rear surface of the upper end. The lower front plate connecting member 34b is fixed to the lower end of the outer edge of the front template plate 12c in the vehicle width direction and extends forward. Be combined. By connecting the front plate main body 35 to the upper and lower front plate connecting members 34a and 34b, the front engagement plate 33 is fixed forward of the tank support bracket 12F by a predetermined distance.

  A front first engagement hole (first side first engagement hole) 37 and a front second engagement hole (first side second engagement hole) 38 are formed in the front plate body 35 so as to penetrate in the front-rear direction. . The front first engagement hole 37 has a circular shape with a smaller diameter than the tank body portion 80a of the first fuel tank 80, and the front second engagement hole 38 has a smaller diameter than the tank body portion 81a of the second fuel tank 81. It has a round shape. The front first engaging hole 37 is formed at a position where the front tank end portion 80b of the first fuel tank 80 placed on the front and rear tank support brackets 12F and 12R can be engaged from the rear side. The front second engagement hole 38 is formed at a position where the front tank end portion 81b of the second fuel tank 81 mounted on the front and rear tank support brackets 12F and 12R can be engaged from the rear side. By engaging the front tank end portion 80b with the front first engagement hole 37 from the rear side, the first fuel tank 80 is positioned in the front-rear direction and the first fuel tank 80 is moved to the front side. Be blocked. Further, by engaging the front tank end portion 81b with the front second engagement hole 38 from the rear side, the second fuel tank 81 is positioned in the front-rear direction, and the front side of the second fuel tank 81 is positioned. Movement is blocked.

  The neck portion 84 and the container main valve 85 of the first fuel tank 80 are exposed to the front side from the front first engagement hole 37, and the neck portion 86 and the container main valve 87 of the second fuel tank 81 are the front second engagement. It is exposed from the hole 38 to the front side.

  As shown in FIGS. 4, 6 and 7, the rear movement restricting member 15 includes a rear first engaging plate (other side first engaging member) 40 and upper and lower rear first plate connecting members (first 1 fastening member) 41, 42, rear 2nd engaging plate (second side second engaging member) 43, and upper and lower rear 2nd plate connecting members (2nd fastening member) 44, 45. A plate coupling bracket 46 is fixed to the rear surface of the template plate 12c on the rear side of the rear tank support bracket 12R (see FIG. 6).

  The plate connecting bracket 46 is a plate-like member that is bent in a substantially S shape, and includes a front end portion 47 fixed to the template 12 c, an intermediate portion 48 that bends from the front end portion 47 and extends rearward, and an intermediate portion 48. It integrally has a plate support portion 49 fixed to the rear end portion. The plate support portion 49 is arranged at a position separated rearward from the vicinity of the boundary between the first support plate portion 12d and the second support plate portion 12e of the rear tank support bracket 12R.

  The rear first engagement plate 40 is arranged on the rear side of the first fuel tank 80 in a posture that intersects with the front-rear direction (a posture that is substantially orthogonal in the present embodiment). The rear first engaging plate 40 integrally has a polygonal rear first plate body 50 and a flange portion 51 bent forward from the entire outer peripheral edge of the rear first plate body 50.

  The rear second engagement plate 43 is in a posture intersecting the front-rear direction (a posture that is substantially orthogonal in the present embodiment), is on the rear side of the second fuel tank 81, and is diagonally outward in the vehicle width direction of the rear first engagement plate 40. It is located below. The rear second engagement plate 43 integrally has a polygonal rear second plate body 52 and a flange portion 53 that is bent forward from the entire outer peripheral edge of the rear second plate body 52.

  A coupling bracket 54 is fixed to the vehicle width direction inner upper end of the rear template plate 12c on the rear side of the tank support bracket 12R on the rear side. The coupling bracket 54 has two circular bolt insertion holes (not shown). ) Is formed.

  The upper rear first plate connecting member 41 has a plate-shaped portion 56 in which an elongated bolt insertion hole 55 extending in the front-rear direction is formed, and a shaft-shaped portion fixed to the rear end portion of the plate-shaped portion 56 and extending rearward. It has a portion 57, two bolts 58, and two nuts (not shown). The rear end of the shaft-shaped portion 57 is coupled to the front surface of the upper end of the rear first plate body 50 on the inner side in the vehicle width direction. By stacking the plate-shaped portion 56 on the coupling bracket 54 from above, and inserting the bolt 58 into the bolt insertion hole 55 on the plate-shaped portion 56 side and the coupling bracket 54 side and tightening the bolt to the nut, the plate-shaped portion 56 is attached to the coupling bracket 54. Fastened and fixed, the upper portion of the rear first engagement plate 40 is attached to the tank support bracket 12R. Since the bolt insertion hole 55 on the plate-shaped portion 56 side is an elongated hole extending in the front-rear direction, the front-rear position of the rear first engagement plate 40 before fastening can be adjusted.

  The lower rear first plate connecting member 42 is fixed to the plate supporting portion 49 of the plate connecting bracket 46 and extends rearwardly with a first bolt shaft portion 59 and a nut (in the present embodiment) screwed to the first bolt shaft portion 59. In the form, it has a double nut) 60. A bolt insertion hole (not shown) is formed in the rear first plate body 50, and the first bolt shaft portion 59 is inserted into the bolt insertion hole, and the nut 60 is screwed from the rear side to form the rear first plate. The lower portion of the engagement plate 40 is attached to the tank support bracket 12R in a state where it can be tightened to the front side.

  In this way, the upper and lower rear first plate connecting members 41, 42 support the rear first engaging plate 40 rearward of the tank support bracket 12R so as to be movable in the front-rear direction and tightenable to the front side on the vehicle body side. .

  The rear first plate body 50 is formed with a rear first engagement hole (other-side first engagement hole) 61 that penetrates in the front-rear direction. The rear first engagement hole 61 has a circular shape having a diameter smaller than that of the tank body portion 80a of the first fuel tank 80, and is located on the rear side of the first fuel tank 80 mounted on the front and rear tank support brackets 12F and 12R. The tank end portion 80c is formed at a position that can be engaged from the rear side.

  When fixing the first fuel tank 80 to the front and rear tank support brackets 12F and 12R, the tank body 80a is placed on the first support plate 12d, and the front tank end 80b is attached to the front engagement plate 33. The first engaging hole 37 is positioned from the rear side by engaging the first engaging hole 37 from the rear side, the rear first engaging hole 61 of the rear first engaging plate 40 is engaged with the rear tank end portion 80c from the rear side, and the nut 60 is attached. After tightening to determine the front-rear position of the lower portion of the rear first engaging plate 40, the bolt 58 is tightened to fix the upper portion of the rear first engaging plate 40. In this state, the first fuel tank 80 is sandwiched between the front engagement plate 33 and the rear first engagement plate 40 in the front-rear direction and fixed to the vehicle body side, and the first fuel tank 80 moves forward and backward. Are blocked by the front engagement plate 33 and the rear first engagement plate 40. Finally, the tank body 80a is bound to the front and rear tank support brackets 12F and 12R by the first fixing belt 21.

  The upper rear second plate connecting member 44 is fixed to the plate supporting portion 49 of the plate connecting bracket 46 and extends rearward, and the second bolt shaft portion 62 and the nut screwed to the second bolt shaft portion 62 (in the present embodiment). Has a double nut 63. A bolt insertion hole (not shown) is formed in the rear second plate body 52, and the second bolt shaft portion 62 is inserted into this bolt insertion hole, and the nut 63 is screwed from the rear side to form the rear second plate. The upper portion of the engagement plate 43 is attached to the tank support bracket 12R in a state in which it can be tightened forward.

  A coupling bracket 64 is fixed to the vehicle width direction outer lower end portion of the rear template plate 12c on the rear side of the tank supporting bracket 12R on the rear side. The coupling bracket 64 has two circular bolt insertion holes (not shown). ) Is formed.

  The rear second plate connecting member 45 on the lower side is fixed to the plate-shaped portion 66 in which a long bolt-shaped bolt insertion hole (not shown) extending in the front-rear direction is formed, and is fixed to the rear end of the plate-shaped portion 66 to be rearward. It has a shaft-like portion 67 extending to, two bolts 68, and two nuts 69. The rear end portion of the shaft-shaped portion 67 is coupled to the front surface of the lower rear end portion of the rear second plate body 52 in the vehicle width direction. By stacking the plate-shaped portion 66 on the coupling bracket 64 from above and inserting the bolt 68 into the bolt insertion holes on the plate-shaped portion 66 side and the coupling bracket 64 side and tightening the nut 69, the plate-shaped portion 66 is attached to the coupling bracket 64. Fastened and fixed, the lower portion of the rear second engagement plate 43 is attached to the tank support bracket 12R. Since the bolt insertion hole on the plate-shaped portion 66 side is a long hole extending in the front-rear direction, it is possible to adjust the front-rear position of the rear second engagement plate 43 before fastening.

  As described above, the upper and lower rear second plate connecting members 44, 45 are arranged rearward of the tank supporting bracket 12R and obliquely below the rear first engaging plate 40 in the vehicle width direction. , Supported on the vehicle body side so as to be movable in the front-rear direction and tightenable to the front side.

  A rear second engagement hole (second side second engagement hole) 70 is formed in the rear second plate body 52 so as to penetrate in the front-rear direction. The rear second engagement hole 70 has a circular shape having a smaller diameter than the tank body portion 81a of the second fuel tank 81, and is located on the rear side of the second fuel tank 81 mounted on the front and rear tank support brackets 12F and 12R. The tank end portion 81c is formed at a position that can be engaged from the rear side.

  When the second fuel tank 81 is fixed to the front and rear tank support brackets 12F and 12R, the tank body 81a is placed on the second support plate 12e, and the front tank end 81b is attached to the front engagement plate 33. The second engagement hole 38 is engaged with the second engagement hole 38 from the rear side for positioning, the rear second engagement hole 70 of the rear second engagement plate 43 is engaged with the rear tank end 81c from the rear side, and the nut 63 is attached. After tightening to determine the front-back position of the upper portion of the rear second engaging plate 43, the bolt 68 is tightened to fix the lower portion of the rear second engaging plate 43. In this state, the second fuel tank 81 is sandwiched between the front engagement plate 33 and the rear second engagement plate 43 in the front-rear direction and fixed to the vehicle body side, and the second fuel tank 81 moves back and forth. Are blocked by the front engagement plate 33 and the rear second engagement plate 43. Finally, the tank body 81a is bound to the front and rear tank support brackets 12F and 12R by the second fixing belt 22.

  As described above, according to the present embodiment, the front engagement plate 33 prevents the first fuel tank 80 and the second fuel tank 81 from moving to the front side, and the first fuel tank 80 and the second fuel tank 81 Since the rear first engaging plate 40 and the rear second engaging plate 43 prevent the rearward movement of 81, the movement of the first fuel tank 80 and the second fuel tank 81 in the front-rear direction is surely restricted. can do.

  The rear first engaging plate 40 is tightened to the front side by the rear first plate connecting members 41 and 42, and engages with the rear tank end portion 80c of the first fuel tank 80 from the rear side. And the first fuel tank 80 is sandwiched in the front-rear direction, and the first fuel tank 80 is fixed to the vehicle body side. Similarly, the rear second engaging plate 43 is tightened to the front side by the rear second plate connecting members 44 and 45, engages with the rear tank end portion 81c of the second fuel tank 81 from the rear side, and The second fuel tank 81 is sandwiched between the joint plate 33 and the front-rear direction, and the second fuel tank 81 is fixed to the vehicle body side. Therefore, when the axial length (front-back direction) of the first fuel tank 80 is different due to individual differences, or when the axial length (front-back direction) of the second fuel tank 81 is different due to individual differences, Even when the axial length of the first fuel tank 80 and the axial length of the second fuel tank 81 are different due to the difference in the coefficient of thermal expansion due to the difference in the material of the tank, the first fuel tank Both 80 and the second fuel tank 81 can be securely fixed to the vehicle body side.

  The neck portion 84 and the container main valve 85 of the first fuel tank 80 and the neck portion 86 and the container main valve 87 of the second fuel tank 81 are provided at the front tank ends 80b and 81b, respectively. One front engagement plate 33 engages with 80b and 81b from the front side, and each container main valve 85, 86 of the first fuel tank 80 and the second fuel tank 81 is positioned by one front engagement plate 33. Therefore, the relative positions of the two container source valves 85 and 86 are fixed without changing. Therefore, the relative position of the two pipes connected to each of the two container source valves 85 and 86 can be fixed, and the workability of pipe arrangement can be improved.

  Further, the circular engagement holes 37, 38, 61, 70 may be formed in the front engagement plate 33, the rear first engagement plate 40, and the rear second engagement plate 43, respectively. The structure of the plates 33, 40, 43 can be simplified.

  Although the fuel tank unit 10 including two fuel tanks has been described in the present embodiment, a fuel tank unit including one fuel tank (for example, the fuel tank unit 90 in FIG. 1) or three or more fuel tanks. It may be a fuel tank unit including a tank. In this case, the front engagement plates are formed with engagement holes for the number of fuel tanks, the rear side is provided with the rear engagement plates for the number of fuel tanks, and the rear engagement plates are arranged in the front-rear direction. It suffices if it is supported on the vehicle body side so that it is movable and can be tightened forward.

  Further, the front and rear positions of the front engagement plate 33 may be adjustable.

  Further, the front side movement regulating member 14 and the rear side movement regulating member 15 are replaced with each other, one rear engagement plate is provided on the rear side, and a front first engagement plate and a front second engagement plate are provided on the front side. Good.

  Although the present invention has been described above based on the above embodiment, the present invention is not limited to the contents of the above embodiment, and can of course be appropriately modified without departing from the present invention. That is, it goes without saying that all other embodiments, examples, operation techniques, and the like made by those skilled in the art based on this embodiment are included in the scope of the present invention.

  For example, the vehicle to which the present invention is applied is not limited to a large truck, and may be another vehicle such as a bus or a passenger car.

1: Truck (vehicle)
2: Body frame 3: Side members 10, 11, 90: Fuel tank units 12F, 12R: Tank support bracket 33: Front engagement plate (one side engagement member)
37: Front first engaging hole (one side first engaging hole)
38: Front second engagement hole (one side second engagement hole)
40: Rear first engagement plate (other side first engagement member)
41, 42: Rear first plate connecting member (first fastening member)
43: Rear second engagement plate (second side second engagement member)
44, 45: Rear second plate connecting member (second fastening member)
61: Rear first engagement hole (other side first engagement hole)
70: Rear second engagement hole (second side second engagement hole)
80: First fuel tank 80a: Tank body (first cylindrical portion)
80b, 80c: tank end (first end face)
81: Second fuel tank 81a: Tank body (second cylindrical portion)
81b, 81c: Tank end (second end face)
82: First shaft 83: Second shaft 84, 86: Neck part (supply / discharge port)

Claims (3)

It has a first cylindrical portion having a circular cross section centered on the first axis and a pair of front and rear first end surface portions closing both ends of the first cylindrical portion, so that the first axis extends in the front-rear direction. A first fuel tank arranged and supported on the vehicle body side;
It has a second cylindrical portion having a circular cross section around the second axis and a pair of front and rear second end surface portions that close both ends of the second cylindrical portion, and the second shaft is substantially the same as the first shaft. A second fuel tank arranged in parallel with the first fuel tank so as to be parallel to each other and supported on the vehicle body side;
The first fuel tank and the second fuel tank are supported by the vehicle body on one side in the front-rear direction, and are engaged with the first end surface portion on the one side and the second end surface portion on the one side from the one side. And a one-side engagement member that prevents movement of the first fuel tank and the second fuel tank to the one side,
Another side first engagement member that is disposed on the other side in the front-rear direction of the first fuel tank and that can engage with the first end surface portion of the other side from the other side,
A first fastening member that supports the other-side first engagement member on the vehicle body side so as to be movable in the front-rear direction and tightenable to the one side;
It is formed separately from the other-side first engaging member, is disposed on the other side in the front-rear direction of the second fuel tank, and can engage with the second end surface portion of the other side from the other side. Another second side engaging member,
A second fastening member that supports the other-side second engagement member on the vehicle body side so as to be movable in the front-rear direction and tightenable to the one side ;
The other-side first engaging member is tightened to the one side separately from the other-side second engaging member by the first fastening member, and engages with the first end surface portion of the other side from the other side. And the first fuel tank is sandwiched between the one side engaging member and the one side engaging member from the front-rear direction to fix the first fuel tank to the vehicle body side, and the first fuel tank is connected to the other side. Prevent movement ,
The other-side second engaging member is tightened to the one side by the second fastening member separately from the other-side first engaging member, and is engaged with the second end surface portion of the other side from the other side. The second fuel tank is sandwiched between the one side engaging member and the one side engaging member in the front-rear direction to fix the second fuel tank to the vehicle body side, and the second fuel tank is connected to the other side. A fuel tank mounting structure for a vehicle, which is characterized by preventing movement . The fuel tank mounting structure according to claim 1,
A supply / discharge port of the first fuel tank and a supply / discharge port of the second fuel tank are provided at the first end surface portion and the second end surface portion of the one side, respectively. Fuel tank mounting structure. The fuel tank mounting structure according to claim 1 or 2,
The front and rear first end surface portions bulge in a curved shape from both ends of the first cylindrical portion,
The front and rear second end surface portions bulge in a curved shape from both ends of the second cylindrical portion,
The one side engaging member has a circular shape having a diameter smaller than that of the first cylindrical portion, and one side first engaging hole that engages with the first end surface portion of the one side from the one side, A circular shape having a diameter smaller than that of the second cylindrical portion, and a one-side second engagement hole that engages from the one side is formed in the second end surface portion of the one side,
The other side first engaging member has a circular shape having a diameter smaller than that of the first cylindrical portion, and has another side first engaging hole that engages with the other end of the first end surface portion from the other side. Formed,
The other-side second engagement member has a circular shape having a diameter smaller than that of the second cylindrical portion, and the other-side second engagement hole that engages with the second end surface portion on the other side from the other side. A vehicle fuel tank mounting structure characterized by being formed .

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