JP2016124434A - Fuel tank cover - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a fuel tank cover which is easy to be mounted on a vehicle body and handle, suppresses generation of abnormal noise in a junction to the vehicle body in travelling, enhances sealability, and can secure high heat insulation that a heat insulation material has.SOLUTION: A fuel tank cover includes: a protector 2 formed of a foamed body molded in a bowl shape along an outer surface 6a below the fuel tank cover; and an undercover 3 which is resin molded in a bowl shape along an outer surface 2a of the protector. In a standing wall 33 of the undercover 3, a locked portion 301 is provided, a belt-like piece 37 with a locking portion 36 extending through an integral hinge 35 from an outer peripheral edge 311 is provided. A protector outer peripheral portion 21 mounted on an undercover outer peripheral edge 31 is formed, a part 24 of the protector is held by the belt-like portion 37 bent in the integral hinge 35, the locking portion 36 is locked with the locked portion 301, and the undercover 3 covers a fuel tank 6 through the protector 2 and is mounted on a vehicle body 8.SELECTED DRAWING: Figure 4

Description

  The present invention relates to a fuel tank cover that covers a fuel tank installed in a vehicle body such as an automobile.

  A vehicle such as an automobile is provided with a fuel tank, which is usually attached to a vehicle body panel under a rear seat or under a trunk room. For this reason, there is a risk that the temperature of the fuel in the fuel tank may rise due to radiant heat in summer, and several inventions have been proposed to cover this with a highly heat-insulating fuel tank cover (for example, Patent Documents 1 and 2). ).

JP 2003-285393 A Japanese Utility Model Publication No. 4-90425

  Patent Document 1 states that “a resin layer and a metal layer are formed in a multilayer structure in which two or more layers are laminated in the thickness direction”, and in order to enhance heat insulation, a resin layer is disposed on the vehicle outer side. It is preferable. Patent Document 2 employs a heat insulating material such as glass wool having higher heat insulating properties. As described in paragraph 0010, “when mounting to the vehicle body, the concave grooves 9 and 9 are brought into contact with the bottom surface 3 of the fuel tank 1 and the bottom surface 8 of the heat insulating cover 6, and other portions are appropriately insulated with air or glass wool or the like. As the heat insulation layer 5 filled with the material 4, the bands 11, 11 are passed through the concave grooves 9, 9, respectively, and both ends of the bands 11, 11 are coupled to the vehicle body. "

However, since the fuel tank is large and heavy, after covering the fuel tank upside down with a heat insulating cover with heat insulating material (the fuel tank cover of the present invention), it may be turned over and attached to the vehicle body. In such a case, Patent Document 2 is a time-consuming heat insulating cover. When covering the fuel tank with a heat insulating cover with a heat insulating material from above, since they are not integrated, they must be covered separately, increasing the attachment process.
And since a heat insulation cover is directly attached to a vehicle body, it is easy to receive an impact by vehicle driving | running | working and it is easy to generate | occur | produce noise in a junction part. Furthermore, even if a heat insulating material is provided, there is a possibility that air may flow from the gap between the heat insulating cover and the vehicle body, and there is a problem that it is difficult to improve the sealing property of the heat insulating material and keep the heat insulating property in the best state. Furthermore, if leaked fuel or rainwater enters the gap between the heat insulating cover and the fuel tank, there is a problem that the heat insulating material is deteriorated.
On the other hand, in order to ensure the sealing performance between the heat insulating cover and the vehicle body, a separate packing can be installed there. However, the cost increases due to the increase in the number of parts and the work load for installing the packing increases. Invite new problems.

  The present invention solves the above-described problems, is easy to mount and handle on the vehicle body, suppresses the generation of noise at the joint to the vehicle body during traveling without using a separate packing, and has a sealing property. It is an object of the present invention to provide a fuel tank cover that can secure high heat insulation property of the heat insulating material by increasing the temperature and that can be smoothly discharged even if fuel or rainwater leaks into the gap with the fuel tank.

  In order to achieve the above object, the gist of the invention described in claim 1 is that a protector made of foam formed along the outer surface of the lower side of the fuel tank, and a resin in a hook shape along the outer surface of the protector. And a locking portion extending from the outer peripheral edge via an integral hinge, and provided with a locked portion in the middle of the standing wall extending from the outer peripheral edge of the undercover toward the bottom of the heel. A plurality of strip-shaped pieces, and by overlapping the protector on the under cover, a protector outer peripheral portion that is placed on the outer peripheral edge of the under cover between the integral hinges is formed and bent by the integral hinge. A part of the protector is embraced by the piece, the locking portion is locked to the locked portion, and the under cover is further connected to the fuel tank via the protector. Suffer, in the fuel tank cover, characterized by being assembled to the vehicle body by sandwiched the protector outer peripheral portion in the vehicle body. A fuel tank cover according to a second aspect of the present invention is the fuel tank cover according to the first aspect, wherein a plurality of outer casings in which a part of the outer peripheral edge of the under cover protrudes horizontally outward are formed, and through holes are formed in the outer casing. It can be assembled to the vehicle body using a through hole. A fuel tank cover according to a third aspect of the present invention is the fuel tank cover according to the first or second aspect, wherein an outer peripheral portion of the protector mounted on the under cover outer peripheral edge portion where the integral hinge is located is also provided. A slit is formed from the upper surface to the lower surface of the outer peripheral portion, and the strip is placed on the portion of the outer peripheral edge of the under cover through the slit. A fuel tank cover according to a fourth aspect of the present invention is the fuel tank cover according to the first to third aspects, wherein a drainage hole is provided in the bottom portion of the undercover, and a pair of ribs facing the inside of the bottom is provided on the bottom portion near the bottom. In addition, a clip having claws projecting outward on both ribs is integrally formed, and a notch hole is formed in a portion of the protector corresponding to the clip so that the protector is superimposed on the under cover. The claw penetrates the notch hole and protrudes to the inner side of the protector, and the claw is placed on and locked to the inner surface of the saddle around the notch hole. A fuel tank cover according to a fifth aspect of the present invention is the fuel tank cover according to the fourth aspect, wherein the drainage holes are provided on both sides of the pair of ribs, and the base ends of the ribs are in contact with the peripheral edges of the drainage holes. To do.

  The fuel tank cover of the present invention is easy and easy to assemble on the vehicle body, has good sealing properties and high heat insulation without using packing, and generates abnormal noise at the mounting portion during traveling. Demonstrates excellent effects such as suppression.

2 is an exploded perspective view of a fuel tank cover according to Embodiment 1. FIG. It is a perspective view of the fuel tank cover which mounted the protector in the cage | basket of the under cover of FIG. FIG. 3 is a perspective view of a fuel tank cover in which the protector and the under cover of FIG. 2 are integrated. FIG. 4 is a cross-sectional view of the fuel tank cover of FIG. 3 attached to a vehicle body, and a vertical cross-sectional view passing through a slit and a through hole. FIG. 3 is an explanatory longitudinal sectional view of an under cover around the integral hinge of FIG. 2. It is principal part sectional drawing around the integral hinge of FIG. (A) is a plan view around a clip, and (b) is a longitudinal sectional view of (a). It is explanatory sectional drawing which mounted the nail | claw of the clip on the heel bottom part of the protector, and latched to the protector. In Embodiment 2, it is a perspective view corresponding to FIG. 3 which mounted the protector in the cage | basket of the undercover and connected both. It is a description longitudinal cross-sectional view of the undercover around an integral hinge. FIG. 10 is a cross-sectional view around the integral hinge of FIG. 9. In Embodiment 3, it is a disassembled perspective view of the fuel tank cover corresponding to FIG. The perspective view of the fuel tank cover corresponding to FIG. 3 which assembled | attached the protector of FIG. 12 to the under cover is shown.

Hereinafter, the fuel tank cover according to the present invention will be described in detail.
(1) Embodiment 1
1 to 8 show one embodiment of a fuel tank cover according to the present invention, FIG. 1 is an exploded perspective view thereof, FIG. 2 is a perspective view in which a protector is placed on the under cover of FIG. 1, and FIG. FIG. 4 is a cross-sectional view of the fuel tank cover shown in FIG. 3 attached to the vehicle body, and is a vertical cross-sectional view passing through the slit and the through hole. 5 is a longitudinal sectional view of the under cover around the integral hinge in FIG. 2, FIG. 6 is a sectional view around the integral hinge in FIG. 4, FIG. 7 is a plan view around the clip, and FIG. FIG. 8 is a cross-sectional view in which a clip claw is placed on the bottom of the protector and locked to the protector. In order to make the drawings easy to understand, the overall shape of the protector and the under cover is simplified, and the thickness, the locking portion, the strip, and the clip are emphasized and drawn larger.

  The fuel tank cover 1 includes a protector 2 made of foam formed along the outer surface 6 a below the fuel tank 6, and an under cover 3 molded in a bowl shape along the outer surface 2 a of the protector 2. (Fig. 1). In the present invention, “lower side” and “lower side” refer to “lower side of paper” and “lower side of paper” in FIG.

The protector 2 is a three-dimensional component that is foam-molded in a bowl shape with a predetermined thickness having heat insulation properties and covers the fuel tank 6 from below as shown in FIG. The heel side wall 23 is inclined outwardly toward the upper surface opening to increase the opening on the upper surface opening side. Furthermore, from the opening edge 2c, the protector outer peripheral portion 21 projects in a flange shape horizontally outward so as to surround the upper surface opening. The outer peripheral portion 21 here forms a flange portion 217 as shown in FIG.
The protector 2 is molded into a shape along the outer surface 6a on the lower side of the fuel tank 6 by vacuum softening or pressure forming after heating and softening a closed-cell type thermoplastic foam sheet. Here, vacuum molding is employed in which a closed-cell type foamed polyethylene sheet having a thickness of 8 mm to 15 mm is heated and softened and molded between the foamed polyethylene sheet and the mold in a vacuum state.

  The undercover 3 is a bowl-shaped injection-molded product, and is provided with an outer peripheral edge portion 31 that protrudes horizontally outward in a flange shape from the upper surface opening edge 3c. It is made of polypropylene resin (or made of polypropylene resin with talc) and is molded with a thickness of about 1.5 mm to 2.5 mm. As shown in FIGS. 1 and 2, when the protector 2 is superimposed on the under cover 3 from above, the protector outer peripheral portion 21 is placed on the under cover outer peripheral edge portion 31 that surrounds the bowl-shaped upper surface opening. This is because the elastic outer peripheral portion 21 of the protector has a packing role. And the under cover 3 and the protector 2 are united, and the under cover 3 is provided with a band-like piece 37 with a locking portion 36, a locked portion 301, and a clip 39 so that the under cover 3 is not separated.

  Specifically, a locked portion 301 formed by the through hole 30 is provided in the middle of the standing wall 33 from the outer peripheral edge 311 of the undercover 3 to the bottom portion 32, and extends from the outer peripheral edge 311 via the integral hinge 35. A belt-like piece 37 with a locking portion 36 is provided (FIG. 5). A band-like piece 37 with a locking portion 36 is rotatably connected to the undercover outer peripheral edge 311 via an integral hinge 35. The integral hinge 35 is reduced in thickness and can be bent and deformed by forming a constricted portion. The band-like piece 37 bent by the integral hinge 35 embraces a part 24 of the protector 2 near the integral hinge 35, and the locking portion 36 penetrates the thickness layer m of the protector 2, thereby passing through the through hole 30. It can be locked to the locked portion 301 formed by the above.

Specifically, a strip-shaped piece 37 that is three-dimensionally extended via an integral hinge 35 extends from a plurality of locations (here, four locations) of the outer periphery 311 of the under cover. As shown in FIG. 6, each strip 37 has a length corresponding to the sum of the edge width of the outer peripheral edge 31 and the thickness of the protector 2 via the integral hinge 35. When the first piece portion 37a is folded on the outer peripheral edge portion 31 by being bent by the integral hinge 35, it penetrates from the protector opening edge 2c placed in the undercover 3 along the inner surface 3b of the undercover. A second piece 37b extending down to near the height of the hole 30; a second piece 37b bent toward the first piece 37a at the tip of the second piece 37b; The third piece portion 37c that protrudes from the third piece portion 37c, the fourth piece portion 37d that is a bent portion from the third piece portion 37c, and the third piece portion 37c is formed into a V-shaped portion in a side view, and the tip portion has a through hole 30. And a fifth piece portion 37e that goes to the inner wall 3u. On the outer surface of the V-shaped portion related to the fifth piece portion 37e, a locking portion 36 consisting of a protrusion is erected. Incidentally, the first piece portion 37a bent by the integral hinge 35 is directed from the upper surface 21a to the lower surface 21b of the protector outer peripheral portion 21, and is overlapped on the under cover outer peripheral edge portion 31 of FIG. 6 from the state of FIG. Therefore, the protector 2 is provided with a slit 210 (details will be described later). Further, when the protector 2 is placed on the under cover 3 as shown in FIG. 2, a through hole 230 that penetrates the thick layer m is provided in the heel side wall 23 of the protector 2 that faces the through hole 30. Yes.
With such a configuration, the through-hole 230 is bent by the integral hinge 35 so that the third piece portion 37c and the fifth piece portion 37e are brought together against the elasticity to keep the V-shaped portion. The locking portion 36 is hidden in the through hole 30. Then, the state is changed from the state shown in FIG. 5 to the state shown in FIG. 6 so that the locking portion 36 is locked to the outer surface of the standing wall 33 as the locked portion 301 around the through hole 30.

Further, the clip 39 is provided on the bottom portion 32 of the under cover 3 (FIGS. 1 and 7). The clip 39 includes a pair of ribs 392 and claws 391. The pair of plate-like ribs 392 are spaced apart from each other on the bottom portion 32 so as to face each other, and the ribs 392 are directed upward from the bottom portion 32 and slightly outside each other as shown in FIG. Inclined upward to spread out. Then, a hook-like claw 391 protrudes outward from the opposite side rib 392 at the tip ends of both ribs 392. The height from the rib bottom 32 of the rib base end to the lower surface of the claw 391 is substantially equal to the thickness of the protector 2 (FIG. 8). The ribs 392 and the claws 391 have the same cross-sectional shape in the direction perpendicular to the paper surface of FIG. . Explaining in a plan view of FIG. 7 (a) (viewing the undercover in the die-cutting direction), both the water drain holes 38 have a vertical length that projects outward from both sides of the plate width of the rib 392, and In the plan view, it is formed in a rectangular hole having a lateral length extending from the base end edge of the rib 392 to a point slightly beyond the tip of the claw 391. If the view is changed, it is formed so that the bottom portion 321 serving as a bridging portion crosses the middle portion of the large drainage hole 38 connecting the two drainage holes 38 on both sides of the pair of ribs 392, It can be said that both ribs 392 are erected. Water drain holes 38, 38 are provided on both sides of the pair of ribs 392, 392. The base ends of the ribs 392 and 392 are in contact with the peripheral edges of the drain holes 38 and 38 on both sides.
By forming the clip 39 and the drainage hole 38, a parting line PL as shown in FIG. 7 (b) is adopted, and the vertical direction in FIG. Sometimes clip 39 and drain hole 38 are integrally molded together. A drain hole 38 is provided in the bottom portion 32 of the under cover 3, and a pair of ribs 392 are erected in the vicinity of the bottom portion 321 toward the inner portion 3 u of the under cover 3, and further project outwardly from both ribs 392. A clip 39 having a claw 391 is integrally formed. In this embodiment, the bottom portion 321 of the bridging portion has a rectangular plate shape, and both side edges thereof form part of the peripheral edge of the drain hole 38, and the drain holes 38 are formed on both sides of the bottom portion 321. Arranged. Although a plurality of (two sets) of clips 39 that form a pair of ribs 392 are provided on the heel bottom 32, one set may be used.

  Reference numeral 34 denotes an outer collar 34 that extends in an ear shape at four corners of the outer peripheral edge 31, and reference numeral 340 denotes a through hole 340 provided in the outer collar 34. A plurality of outer flanges 34 in which a part of the outer peripheral edge portion 31 of the under cover protrudes horizontally outward are formed, and a through hole 340 is formed in the outer flange 34, and the under cover 3 is attached to the vehicle body 8 using the through holes 340. Assembled to. Using the through hole 340, as shown in FIG. 4, the under cover 3 covers the fuel tank 6 via the protector 2, and the protector outer peripheral portion 21 is sandwiched between the vehicle body 8 (specifically, the vehicle body panel 81). The vehicle body 8 can be assembled and fixed. In FIG. 4, reference numeral 61 denotes a bolt provided on the vehicle body panel 81, and reference numeral 5 denotes a stopper that is a nut having a female screw portion that is screwed into the male screw portion of the bolt 61.

  On the other hand, the protector 2 is formed with a notch 29 in a portion corresponding to the clip 39 by overlapping the bowl-shaped undercover 3 on the inside 3u of the bowl. In FIG. 7 (a), the cutout hole 29 has substantially the same vertical length as the drainage hole 38 projecting slightly outward (both in the vertical direction on the paper surface) from the plate width of the rib 392, while the horizontal length is As shown in FIG. 8, the lateral length is slightly larger than the bottom portion 321 of the bridging portion. When the protector 2 is superimposed on the under cover 3, the pair of ribs 392 pushes the hole wall of the elastic protector 2 forming the notch hole 29 with the claws 391 and resists the elastic force of the resin. The ribs 392 are brought close to each other and enter the notch hole 29. Thereafter, the claw 391 passes through the notch hole 29 and protrudes toward the inner side 3u of the protector 2, and the claw 391 is placed and locked on the inner surface 3b around the notch hole 29 by elastic restoration.

  Further, the protector 2 has a first piece 37a bent by the integral hinge 35 after the protector 2 is overlaid on the under cover 3 from above as shown in FIG. A slit 210 is provided so as to overlap the peripheral edge 31. The outer peripheral portion 21 of the protector 2 mounted on the under cover outer peripheral edge portion 31 where the integral hinge 35 is located is disposed. Formed (FIGS. 1 and 6). The belt-like piece 37 passes through the slit 210 and is placed on the portion 31 a of the outer periphery 31 of the under cover.

  Specifically, as shown in FIGS. 1 to 3, the vertical slit 210v extending from the upper surface 21a to the lower surface 21b of the outer peripheral portion 21 and the horizontal slit 210h extending outward on both sides at the lower end of the vertical slit 210v are formed in an inverted T shape. A slit 210 is formed. The vertical slit 210v is cut into the protector outer peripheral portion 21, and the vertical slit 210v extends to the heel side wall 23 at the same depth as the cut depth, and the heel toward the heel bottom 22 from the protector opening edge 2c. The side wall 23 is also cut (FIG. 1). A horizontal slit 210h connected to the lower end of the vertical slit 210v cuts into the heel side wall 23 so as to penetrate the protector thickness. The lower end of the vertical slit 210v reaches the lower surface 21b of the flange-shaped outer peripheral portion 21, and further, at this height point, the horizontal slit 210h cuts horizontally toward the inner wall 2u, and the horizontal slit 210h is formed through the side wall 23. Is done. In FIG. 1, the front view shape of the horizontal slit 210 h is substantially equal to the cross-sectional shape of the first piece portion 37 a related to the belt-like piece 37. From the state of FIG. 2, the integral hinge 35 is bent at the fulcrum to rotate the strip 37 to the 2u side of the protector cage, and the first piece 37a is inserted into the vertical slit 210v and disposed in the horizontal slit 210h. As shown in FIG. 6, the first piece portion 37 a can be overlaid on the undercover outer peripheral edge portion 31.

Further, the protector 2 has a through hole 30 at a position opposite to the through hole 30 provided in the under cover 3 on the side wall 23 of the protector 2 just below the horizontal slit 210h and slightly apart from the horizontal slit 210h. Through holes 230 having substantially the same size are formed. In the present embodiment, the through hole 230 is made slightly larger than the through hole 30. When changing from the state shown in FIG. 5 to the state shown in FIG. 6, the third piece portion 37 c and the fifth piece portion 37 e are brought together against the elasticity to keep the V-shaped portion, so that the through-hole 230, The locking portion 36 that has entered the through hole 30 and has passed through the through hole 30 is locked to the outer surface of the standing wall 33 (locked portion 301) around the through hole 30.
In this way, the fourth piece portion 37d, the third piece portion 37c, the head portion of the fifth piece portion 37e, and the locking portion according to the belt-like piece 37 in which the first piece portion 37a is disposed in the horizontal slit 210h. 36 is passed through the through hole 230 and the through hole 30, and the locking portion 36 is locked to the locked portion 301 around the through hole 30 so that the under cover 3 and the protector 2 can be connected. As shown in FIG. 3 and FIG. 6, when the locking portion 36 is locked to the locked portion 301 of the standing wall 33 around the through hole 30 at four locations (a plurality of locations), the under cover 3 and the protector 2 are integrally held. Even if it is turned upside down, the protector 2 cannot be separated from the under cover 3 and fall off.
In addition, the strip | belt-shaped piece 37 of this embodiment is an example which consists of the 1st-5th piece part 37e, and is not restricted to this shape. FIG. 5 shows the state of the injection molding in which the second piece 37b extends horizontally outward from the integral hinge 35 via the first piece 37a, and is taken out after the injection molding. The actual strip 37 connected to the outer peripheral edge 311 of the under cover hangs down from the outer peripheral edge 311 of the under cover 3 via the integral hinge 35 as shown in FIG.

(2) Embodiment 2
This embodiment is a fuel tank cover 1 in which the slit 210 formed in the protector 2 of the first embodiment is omitted as shown in FIGS. FIG. 9 is a perspective view corresponding to FIG. 3 in which the protector 2 is placed in the inner casing 3u of the under cover 3 and connected to each other, FIG. 10 is a longitudinal sectional view corresponding to FIG. 5, and FIG. A cross-sectional view around the hinge 35 is shown.
Since the slit 210 from the upper surface 21a to the lower surface 21b of the outer peripheral portion 21 of the protector 2 is not formed as in the first embodiment, the strip 37 passes through the slit 210 and is placed on the portion 31a of the undercover outer peripheral edge portion 31. There is no.
As shown in FIG. 11, the band-like piece 37 bent by the integral hinge 35 embraces a part 24 of the protector near the integral hinge 35, and the locking portion 36 penetrates the thick layer m of the protector 2. The belt-like piece 37 (first piece part 37a) is placed on the upper surface 21a of the protector outer peripheral part 21 as shown in FIG. Therefore, in the portion 31a of the outer peripheral edge portion 31 where the integral hinge 35 is present, as shown in FIG. 10, the sixth piece portion 37f is erected and extended from the outer peripheral edge 311 with the band width of the strip-shaped piece 37. The first piece portion 37a to the fifth piece portion 37e extend through the integral hinge 35 at the tip of the piece portion 37f in the same manner as in the first embodiment. In addition, since the 1st piece part 37a rests on the upper surface 21a of the protector outer peripheral part 21, the strip | belt length of the 2nd piece part 37b becomes long only by the thickness equivalent of the protector outer peripheral part 21 compared with FIG. 6 (FIG. 11).

Here, in FIG. 11, in order to make the positional relationship between the strip-shaped piece 37 and the protector 2 easy to understand, the sixth piece portion 37 f has a height corresponding to the thickness of the protector outer peripheral portion 21. It is more preferable that the height of the piece 37f in the vertical direction on the paper surface is lower than the thickness of the protector outer peripheral portion 21. The height of the sixth piece portion 37f is made lower than the thickness of the protector outer peripheral portion 21, and the portion of the first piece portion 37a placed on the upper surface 21a of the protector outer peripheral portion 21 is sunk downward against the elasticity of the protector 2. It is preferable that the part 24 of the protector is clamped by the belt-like piece 37 and the locking part 36 is locked to the locked part 301. With such a configuration, when the under cover 3 covers the fuel tank 6 via the protector 2 and the protector outer peripheral portion 21 is sandwiched between the under cover 3 and the vehicle body 8, the first piece portion Except for the protector outer peripheral portion 21 on which 37a is placed, the protector outer peripheral portion 21 can be compressed and sandwiched between the under cover 3 and the vehicle body 8.
Other configurations are the same as those of the first embodiment, and a description thereof will be omitted. The same reference numerals as those in the first embodiment denote the same or corresponding parts.

(3) Embodiment 3
As shown in FIGS. 12 and 13, the fuel tank cover 1 of the present embodiment is the same as that of the first embodiment, in which the vertical slit 210v is formed in the protector outer peripheral portion 21 and from the protector opening edge 2c to the heel bottom 22. The protector 2 obtained by excising the part of the side wall 23 up to the position of the horizontal slit 210h is used. 12 is an exploded perspective view of the fuel tank cover corresponding to FIG. 1, and FIG. 13 is a perspective view of the fuel tank cover in which the protector 2 of FIG.

In the first embodiment, the slit 210 is provided, and the strip 37 passes through the slit 210 and is placed on the portion 31 a where the integral hinge 35 is located at the outer peripheral edge portion 31 of the under cover. The part of the protector outer peripheral part 21 in which is formed and the part of the heel side wall 23 from the protector opening edge 2c to the heel bottom part 22 are cut out, and a concave step 215 as shown in FIG. 12 is provided. The recessed part which forms the step bottom of the step part 215 in the heel side wall 23 is flush with the lower surface 21b of the protector outer peripheral part 21. The lateral length of the concave step 215 is made longer than the band width of the band-like piece 37 to improve usability.
After the protector 2 is overlaid on the under cover 3 from the state shown in FIG. 12, the strip 37 is bent by the integral hinge 35 under the concave step 215 near the integral hinge 35 as in the first embodiment. A part 24 of the protector 24 is held, and the locking part 36 penetrates through the thickness layer m of the protector 2 and is locked to the locked part 301. At this time, since the concave step portion 215 is formed, the work of making the strip 37 enter the slit 210 and be placed on the portion 31a of the outer peripheral edge portion 31 of the under cover through the slit 210. No. When the integral hinge 35 is bent at the fulcrum from the state corresponding to FIG. 2 and the belt-like piece 37 is rotated toward the inside of the protector cage 2u, the first piece part 37a automatically becomes the recessed part of the concave step part 215. And the state of being overlaid on the outer peripheral edge 31 of the under cover 3 is ensured. However, the under cover 3 covers the fuel tank 6 via the protector 2 and the protector outer peripheral portion 21 is compressed and clamped with the vehicle body 8 to be assembled to the vehicle body 8, but there is a step 215. There is no compression clamping of the protector outer peripheral portion 21 only at the location.
Other configurations are the same as those of the first embodiment, and a description thereof will be omitted. The same reference numerals as those in the first embodiment denote the same or corresponding parts.

(4) Effect The fuel tank cover 1 configured as described above is a belt-like piece 37 provided on the under cover 3 to embrace a part 24 of the protector near the integral hinge 35, and the locking portion 36 is a locked portion. Since it latches to 301, the undercover 3 and the protector 2 of a separate structure can be assembled | attached integrally. The fuel tank 6 in the large and heavy fuel tank 6 is turned upside down and covered with the fuel tank cover 1 in which the under cover 3 and the protector 2 are assembled together. Can be installed. Unlike the conventional case in which the protector 2 and the under cover 3 are separately covered on the fuel tank 6, the mounting process is simplified and the workability is improved.
Here, a locked portion 301 is provided in the middle of the standing wall 33 from the outer peripheral edge 311 of the undercover 3 toward the bottom portion 32, and the locking portion extends from the outer peripheral edge 311 of the undercover 3 via the integral hinge 35. Since the strip 37 with 36 is provided and the under cover 3 and the protector 2 are assembled together, there is no need for a separate part for assembling. Cost increase can be suppressed.

Then, the belt-like piece 37 bent by the integral hinge 35 embraces a part 24 of the protector near the integral hinge 35, and the locking part 36 penetrates through the thickness layer m of the protector 2 and is locked. When locked to the portion 301, the protector 2 that is easily deformed is corrected in addition to the integration of both, and the outer surface 2a of the heel is aligned with the inner surface 3b of the undercover, so that the protector 2 can be satisfactorily set on the fuel tank 6. .
The protector 2 made of a foam is easier to form in a bowl shape along the outer surface 6a on the lower side of the fuel tank 6 as compared with a heat insulating material such as glass wool of Patent Document 2. However, it is molded along the outer surface 6a on the lower side of the fuel tank, but the shape is not stable and the accuracy is not so good as compared with a solid injection molded product. In a foam molded product by vacuum molding or the like, when placed in the under cover 3, the heel side wall 23 tends to partially separate from the standing wall 33 of the under cover 3. If the protector saddle side wall 23 is not aligned with the undercover standing wall 33, when the fuel tank 6 is covered with the fuel tank cover 1, the saddle side wall 23 will fall down, which may hinder the performance of the protector 2 such as heat insulation. Come on. In the present invention, a belt-like piece 37 with a locking portion 36 is provided on the outer peripheral edge 311 of the under cover via an integral hinge 35, and a portion near the protector opening edge 2c near the integral hinge 35 (part 24 of the protector) is held. Therefore, when the fuel tank 6 is covered with the protector 2, it is possible to effectively prevent the side wall 23 from falling down. Furthermore, since the saddle wall 23 is inclined outwardly toward the upper surface opening and the opening on the upper surface opening side is enlarged, the frontage opening becomes wide, and when the fuel tank 6 is covered with the protector 2, the saddle wall 23 is more unlikely to fall down. It has become. Contributes to improved workability and quality.

  Further, the protector 2 is superposed on the undercover 3 to form a protector outer peripheral portion 21 that is placed on the undercover outer peripheral edge 31, and the undercover 3 covers the fuel tank 6 via the protector 2 and the vehicle body. When the protector outer peripheral portion 21 is sandwiched and fixed to the vehicle body 8 with 8, it is easy to suppress abnormal noise and maintain a heat-insulated sealed state without separately preparing an elastic spacer or packing. The band-like piece 37, the locking portion 36, and the standing wall 33 of the under cover 3 enclose and hold a part 24 of the protector near the integral hinge 35 as shown in FIG. 4, so that the protector 2 is positioned on the under cover 3. The set is maintained without shifting. When the protector outer peripheral portion 21 is placed on the outer peripheral edge portion 31 of the under cover between the integral hinges 35, and the protector outer peripheral portion 21 is interposed between the vehicle body 8 and the under cover 3, the protector 2 is foamed. Since it is made of a body, it is possible to alleviate the impact at the joint between the vehicle body 8 and the under cover 3 and to prevent the generation of abnormal noise. Furthermore, since the protector outer peripheral portion 21 made of a foam sandwiched between the undercover outer peripheral edge portion 31 and the vehicle body 8 is elastically compressed along with the sandwiching, air is released from the gap between the undercover 3 and the vehicle body 8. It is difficult to enter 3u in the undercover cage. Without preparing a separate packing, the heat insulation of the protector 2 made of foam can be maintained in a state close to the best.

Since the excellent heat insulation of the protector 2 is maintained, an increase in pressure in the fuel tank 6 due to fuel vaporization due to radiant heat in summer is suppressed, and an increase in fuel permeability is also suppressed. Since this fuel tank cover 1 has a laminated barrier structure of a protector 2 made of an inner foam and an outer resin undercover 3, the weight of the fuel tank cover 1 can be reduced and the fuel tank 6 can be prevented from increasing pressure and fuel permeability. Preferred.
When the outer casing 34 having the through hole 340 is formed in the outer peripheral edge 31 of the under cover, the fuel tank cover 1 covering the fuel tank 6 can be easily attached to the vehicle body 8.

  In order to extend the outer peripheral portion 21 of the protector 2 to the outer peripheral edge 311 of the under cover 3 and place it on the under cover outer peripheral edge 31 between the integral hinges 35, the outer cover outside the integral hinge 35 exists. If the protector 2 is provided with the concave step 215 as in the third embodiment in the region 31a of the peripheral portion 31 (FIG. 12), the first of the strips 37 can be obtained by bending the strip 37 with the integral hinge 35. The piece 37a smoothly overlaps with the undercover outer peripheral edge 31 (FIG. 13). Therefore, the part 24 of the protector near the integral hinge 35 is quickly embraced by the strip-shaped piece 37, and the locking part 36 can be easily locked to the locked part 301 after passing through the thickness layer m of the protector 2. The work process of assembling the under cover 3 and the protector 2 together can be further simplified. Nevertheless, since the outer peripheral portion 21 of the protector 2 is placed on most of the undercover outer peripheral edge portion 31 except for the concave step portion 215, impact mitigation and noise generation prevention at the joint portion of the vehicle body 8 and the undercover 3 can be achieved. Thermal insulation is maintained.

  On the other hand, the outer peripheral portion 21 of the protector 2 mounted on the portion 31a is also provided in the portion 31a of the undercover outer peripheral edge portion 31 where the integral hinge 35 exists (FIG. 9), and as in the second embodiment, the integral hinge 35 is provided. The part of the protector 24 near the integral hinge 35 is embraced from above with the band-like piece 37 bent at the top, and the locking part 36 penetrates the thickness layer m of the protector 2 to be locked part 301. It can also be locked to. Even in such a configuration, the undercover 3 and the protector 2 are integrally held, and the protector outer peripheral portion 21 other than the belt-shaped piece 37 holding the protector portion 24 is compressed and sandwiched between the undercover 3 and the vehicle body 8, and the fuel tank Since the cover 1 can be attached to the vehicle body 8, it is possible to obtain certain effects of reducing the above-described impact, preventing abnormal noise, and maintaining the heat insulation of the protector 2.

  Further, as in the first embodiment, the outer peripheral portion 21 of the protector 2 mounted on the portion 31a is also provided in the portion 31a of the undercover outer peripheral portion 31 where the integral hinge 35 is present, and the upper surface 21a of the outer peripheral portion 21 is provided. When the slit 210 is formed from the bottom surface 21 b to the lower surface 21 b and the strip 37 is placed on the portion 31 a of the outer peripheral edge 31 of the under cover through the slit 210, the entire upper surface of the annular outer peripheral portion 21 of the protector 2 Since it can be attached to the vehicle body 8 in a clamped state, it has excellent impact resistance and sealing properties, and the above-described impact mitigation, abnormal noise prevention and heat insulation of the protector 2 are achieved in the second embodiment. , 3 can be maintained at a higher level than 3.

In addition, a clip 39 is formed on the heel bottom portion 32 of the under cover 3, a notch hole 29 is formed in a portion of the protector 2 corresponding to the clip 39, and the protector 2 is overlapped with the under cover 3, whereby a claw 391 is formed. When penetrating through the notch hole 29 and resting on the saddle inner surface 2b around the notch hole 29, the protector saddle bottom part 22 can be easily placed along the saddle bottom part 32 of the under cover 3. Even if the fuel tank cover 1 is turned upside down, the protector bottom 22 is not separated from the undercover bottom 32. Since the protector 2 can be surely placed almost over the entire area of the bowl-shaped inner surface 3 b of the under cover 3 constituting the fuel tank cover 1, the assembly to the vehicle body 8 that covers the fuel tank 6 is carried smoothly.
In addition, if a drain hole 38 is provided in the bottom portion 32 of the under cover 3, even if leaked fuel or rainwater enters the gap between the protector 2 and the fuel tank 6, the drain hole 38 is used for smooth discharge. Because it can, protector 2 will not be deteriorated.
More specifically, when the drainage holes 38 are provided on both sides of the pair of ribs 392, and the base end of the ribs 392 is in contact with the peripheral edge of the drainage hole 38, the clip 39 is not a separate part. When the under cover 3 is formed, it can be integrally formed, and the cost can be reduced.
Thus, this fuel tank cover 1 exhibits the above-mentioned many excellent effects and is extremely beneficial.

  The present invention is not limited to those shown in the above-described embodiment, and various modifications can be made within the scope of the present invention depending on the purpose and application. The shape, size, number, material, etc. of protector 2, protector outer peripheral portion 21, notch groove, undercover outer peripheral edge 31, outer flange 34, integral hinge 35, strip piece 37, drain hole 38, clip 39, etc. Can be selected as appropriate.

1 Fuel tank cover 2 Protector 2a 碗 Outer surface 2b 碗 Inner surface 21 Outer peripheral part (Protector outer peripheral part)
210 Slit 24 Part of protector 29 Notch hole 3 Under cover 30 Through hole 301 Locked portion 31 Outer peripheral edge (under cover outer peripheral edge)
311 outer periphery (under cover outer periphery)
32 Bottom of bottom 321 Bottom of bottom 33 Vertical wall 34 Outer shaft 35 Integral hinge 36 Locking portion 37 Strip piece 38 Drain hole 39 Clip 6 Fuel tank 8 Vehicle body

Claims (5)

A protector made of a foam-shaped foam formed along the outer surface of the lower side of the fuel tank, and an under cover molded in a bowl-shaped resin along the outer surface of the protector,
A locked portion is provided in the middle of the standing wall from the outer peripheral edge of the under cover toward the bottom of the bottom, and a plurality of band-like pieces with a locking portion extending from the outer peripheral edge via an integral hinge are provided, and further to the under cover Of the protector, forming the outer periphery of the protector on the outer periphery of the under cover between the integral hinges,
The belt-shaped piece bent by the integral hinge embraces a part of the protector, the locking portion is locked to the locked portion, and the under cover is fueled via the protector. A fuel tank cover, wherein the fuel tank cover is attached to the vehicle body by covering the tank and sandwiching the outer periphery of the protector between the vehicle body and the vehicle body. 2. A plurality of outer casings in which a part of the outer peripheral edge of the under cover projects horizontally outward, a through hole is formed in the outer casing, and the assembly is assembled to the vehicle body using the through holes. Fuel tank cover. The outer cover peripheral portion of the under cover where the integral hinge is located is also provided with an outer peripheral portion of the protector mounted on the portion, and a slit is formed from the upper surface to the lower surface of the outer peripheral portion. The fuel tank cover according to claim 1 or 2, wherein the fuel tank cover is placed on the outer peripheral edge portion of the under cover through the slit. A clip having a drain hole at the bottom of the under cover and a pair of ribs facing the inside of the bottom in the vicinity of the bottom, and further having claws projecting outward from both ribs. In addition to integrally molding, a notch hole is formed in the protector corresponding to the clip, and when the protector is overlapped with the under cover, the claw penetrates the notch hole and protrudes into the inner side of the protector. The fuel tank cover according to any one of claims 1 to 3, wherein the claw is placed and locked on the inner surface of the flange around the notch hole. The fuel tank cover according to claim 4, wherein the drain holes are provided on both sides of the pair of ribs, and the base ends of the ribs are in contact with the peripheral edges of the drain holes.

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