JP2007168455A - Mounting structure for vessel having barrier material layer - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a mounting structure for a vessel having a barrier material layer with a simple constitution capable of preventing the permeation of a stored article in the vessel. <P>SOLUTION: The mounting structure for a fuel tank 1 has a multi-layer cross section structure formed by blow molding and including the barrier material layer and thermoplastic resin layers positioned at the inner side and the outer side of the barrier material layer, and is mounted to an object part to be mounted through a flange 2 formed by a pinch-off part by a bolt 5. In the flange 2, a notch 4 for penetrating the bolt 5 is formed so as to be continued to an outer wall 3 of the flange 2 and a reinforcement member 6 mounted so as to be straddled on outer walls 3a of both flange pieces 2a positioned so as to clamp the notch 4 is provided. The reinforcement member 6 and the flange 2 are fastened to the object part to be mounted by the bolt 5 in conjunction. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a mounting structure for a container having a barrier material layer such as a fuel tank mounted on an automobile.

In recent years, fuel tanks mounted on automobiles are mainly made of resin type by blow molding from the viewpoint of rust prevention and weight reduction. In this resin fuel tank, the wall portion of EVOH (ethylene-vinyl alcohol) is used to suppress the permeation of fuel such as gasoline stored inside (mainly permeation of HC (hydrocarbon) contained in the fuel). In most cases, it has a barrier material layer composed of a polymer), etc., and in general, a thermoplastic material composed of a barrier material layer and PE (high density polyethylene) formed inside and outside the barrier material layer. It is often composed of a wall portion having a multilayer cross-sectional structure having a resin layer. For example, Patent Document 1 describes a fuel tank having a multilayer cross-sectional structure including an HC barrier material layer and a heat-weldable layer as a thermoplastic resin layer formed with the HC barrier material layer interposed therebetween.
JP 2005-82013 A

  As a conventional technique for attaching a resin fuel tank to a vehicle body, there is a method of pressing and fixing the fuel tank to the vehicle body by spanning a band-shaped band member on the upper surface of the fuel tank so as to generate tension. However, this method requires a separate band member, which leads to an increase in the number of parts and an increase in weight, and a space for arranging the band member as a space around the fuel tank must be secured.

  On the other hand, for example, at a pinch-off portion of a blow mold, a flange 52 is integrally formed on the outer surface side of the fuel tank 51 as shown in FIG. 9, and a bolt mounting hole 53 is formed in the flange 52. If it is adopted, the fuel tank 51 can be fixed to the vehicle body only by the bolt 54 and the nut 55 via the flange 52 without requiring a fixing member such as a band member, and the above-mentioned problems are expected to be solved. Is done.

  However, this mounting structure has the following problems. FIG. 10 is a side sectional view around the flange 52. The layer structure of the wall portion of the fuel tank 51 is, in order from the inside of the tank, a thermoplastic resin layer (inner thermoplastic resin layer 1A), an adhesive layer (adhesive inner layer 1B), a barrier material layer 1C, an adhesive layer (adhesive outer layer 1D), and a regeneration. The layer 1E is a thermoplastic resin layer (outer thermoplastic resin layer 1F). Therefore, in the pinch-off part of the blow molding die, the layer structure of the flange 52 that is formed by overlapping the multilayer parison of the layer structure is that each pair of adhesive inner layers 1B and barriers sandwich the inner thermoplastic resin layer 1A. It becomes the material layer 1C, the adhesive outer layer 1D, the reproduction layer 1E, and the outer thermoplastic resin layer 1F.

  When the bolt mounting hole 53 is formed by punching the flange 52 having such a layer configuration, it is formed between the barrier material layers 1C on the inner peripheral surface of the bolt mounting hole 53 due to the flow direction of the parison. The inner thermoplastic resin layer 1A and the adhesive inner layer 1B are necessarily exposed. That is, there is a problem that the resin layer not covered by the barrier material layer 1C is exposed to the outside, and the permeated fuel leaks to the outside from the exposed surfaces of the inner thermoplastic resin layer 1A and the adhesive inner layer 1B.

  The present invention has been made to solve such problems, in a structure in which a flange is formed on the container at the pinch-off portion of the blow mold, and the container is attached by a fastening member such as a bolt through the flange. An object of the present invention is to provide a container mounting structure having a barrier material layer that has a simple configuration and can prevent permeation of stored matter inside the container.

  In order to solve the above-mentioned problem, the present invention has a multilayer cross-sectional structure formed by blow molding, including a barrier material layer and a thermoplastic resin layer located inside and outside of the barrier material layer, and formed by a pinch-off portion. A container mounting structure that is attached to a mounting target portion via a fastening member through the flange, wherein a notch or a weld portion is formed in the flange so as to continue from the insertion portion of the fastening member to the outer wall of the flange. Alternatively, a container having a barrier material layer, characterized in that it is provided facing the outer walls of both flange pieces located across the weld portion, and is provided with a restricting means for restricting deformation of both flange pieces to the outside. A mounting structure was adopted.

  According to this mounting structure, the notch or the weld portion is formed so as to be continuous from the insertion portion of the fastening member to the outer wall of the flange, so that the entire periphery of the insertion portion of the fastening member and the periphery of the notch or the weld portion are barriers. It can be covered with a material layer. Accordingly, the permeation of the stored material from around the flange is prevented. And the flange piece divided into right and left by the notch or the intervention of the weld part tends to be reduced in strength and easily deformed when subjected to an impact or the like, but the deformation is regulated by the regulating means.

  In the present invention, the restricting means is a container mounting structure having a barrier material layer, characterized in that the restricting means is a restricting wall portion formed on the attachment target portion side.

  According to this mounting structure, the container mounting structure has a small number of parts and excellent mounting workability.

  Further, in the present invention, a reinforcing member that is attached so as to straddle the outer walls of both flange pieces located across the notch or the weld portion and that is fastened together with the flange by a fastening member is provided, and the restriction The means is a structure for attaching a container having a barrier material layer, characterized in that the reinforcing member comprises a restriction surface portion applied to the outer walls of the two flange pieces.

  According to this mounting structure, since the flange pieces divided into the left and right are integrally connected by the reinforcing member, a decrease in the strength of the entire flange is suppressed.

  In the present invention, the reinforcing member has a shape having a closed cross-sectional space corresponding to a cross-sectional outline shape of the flange, and has a structure for attaching a container having a barrier material layer.

  According to this mounting structure, the strength of the reinforcing member itself is increased because the closed cross-section space is provided, and the reinforcing function for the flange can be further enhanced.

  In the present invention, the outer walls of the two flange pieces are formed as surfaces parallel to each other, and the reinforcing member is formed on a base surface portion applied to one surface side of the flange, and on both end sides of the base surface portion, A container mounting structure having a barrier material layer is a member having a U-shaped cross section having a regulating surface portion applied to the outer walls of the two flange pieces.

  According to this mounting structure, even when a force that the flange tries to move in the direction perpendicular to the outer wall of the flange piece is applied, the force received from the outer wall of the flange piece is effective by the restriction surface portions parallel to each other. Can be taken.

  In the present invention, the notch is formed along the outer walls of the flange pieces that are parallel to each other, and the notch width dimension is constant from the opening end to the insertion portion of the fastening member. A restriction protrusion that restricts movement of the flange in a direction toward the inside of the container along the notch direction by abutting a portion of the flange piece that faces the opening end of the reinforcing member on the front end side of the flange piece. A container mounting structure having a barrier material layer characterized in that a portion is formed.

  According to this attachment structure, the movement of the flange in the direction toward the inside of the container along the notch direction is restricted by the restriction protrusion coming into contact with the reinforcing member. Thereby, the drop-off of the container from the attachment target portion is reliably prevented.

  In the present invention, the container is a fuel tank mounted on an automobile, and has a container mounting structure having a barrier material layer.

  According to this mounting structure, the permeation of fuel such as gasoline is suppressed, and the assembly property of the fuel tank to the vehicle body is improved.

  ADVANTAGE OF THE INVENTION According to this invention, a container can be attached to an attachment object part with a simple structure, and permeation | transmission of the stored substance inside a container can be prevented.

  The case where the container to which the present invention is applied is a fuel tank mounted on an automobile will be described. FIG. 1 is an external perspective view of a fuel tank, FIG. 2 is an enlarged explanatory view around a flange, (a) is a side sectional view, and (b) is an AA sectional view in (a). In FIG. 1, a fuel tank 1 is formed by blow molding, and a plurality of flat flanges 2 are formed along a horizontal direction by a pinch-off portion of a blow molding die on a part of the outer surface of the side wall portion. The The outer shape of the flange 2 in a plan view is not particularly limited. In addition to the shape in which the width gradually decreases from the wall of the fuel tank 1 toward the outside as shown in FIG. For example, it may have a rectangular shape.

  As shown in FIG. 2A, the layer structure of the wall portion of the fuel tank 1 is, in order from the inside of the tank, a thermoplastic resin layer (inner thermoplastic resin layer 1A), an adhesive layer (adhesive inner layer 1B), and a barrier material layer 1C. , An adhesive layer (adhesive outer layer 1D), a reproduction layer 1E, and a thermoplastic resin layer (outer thermoplastic resin layer 1F). Therefore, the layer structure of the flange 2 that is formed by overlapping the multilayer parisons of the layer structure includes a pair of inner bonding layers 1B, a barrier material layer 1C, an outer bonding layer 1D, and a recycled material with the inner thermoplastic resin layer 1A interposed therebetween. It becomes the layer 1E and the outer side thermoplastic resin layer 1F.

  The inner thermoplastic resin layer 1A and the outer thermoplastic resin layer 1F are formed of, for example, PE (high density polyethylene) that is excellent in heat melting property and moldability. The adhesive inner layer 1B and the adhesive outer layer 1D are formed of an adhesive resin such as Admer (registered trademark) manufactured by Mitsui Chemicals, Inc., for example. The barrier material layer 1C is formed of, for example, EVOH (ethylene-vinyl alcohol copolymer) excellent in hydrocarbon impermeability. The regeneration layer 1 </ b> E is formed of a recycled material obtained by collecting burrs and the like at the time of molding the fuel tank 1.

  In FIG. 1, a notch 4 is formed in the flange 2 so as to continue to the outer wall 3 of the flange 2. In this embodiment, the fastening member is a bolt 5, and the notch 4 is formed near the center of the flange 2 as can be seen from FIG. 2B, and is a circular bolt through which the bolt 5 (FIG. 1) is inserted. It is formed as a narrow opening end portion 4 a that extends from the insertion portion 4 b to the outer wall 3 at the tip of the flange 2. In addition, it replaces with the notch 4, and is a case where it is a case where it is a weld part without a clearance gap, it is included by this invention. Moreover, even if it is a case where the notch 4 or a weld part is heat-welded in the separate process after blow molding, it is included by this invention.

  9 and FIG. 10, if the structure is such that a notch 4 (or a weld portion) connected to the outer wall 3 of the flange 2 is formed instead of the structure for forming the hole (bolt mounting hole 53) as shown in FIGS. As can be seen from 2 (a) and 2 (b), the periphery of the bolt insertion portion 4b and the periphery of the notch 4 (or the periphery of the weld portion) can be covered with the barrier material layer 1C. Therefore, there is no fear that fuel such as gasoline stored in the fuel tank 1 leaks from the periphery of the flange 2 to the outside.

  However, on the other hand, such a configuration in which the notch 4 is provided has a structure in which the flange 2 is divided into the left and right flange pieces 2a with the notch 4 interposed therebetween. Strength tends to decrease. Of course, even if it is a case where it is set as a weld part instead of the notch 4, intensity | strength falls. Therefore, when receiving an impact or the like, each flange piece 2a is easily deformed (displaced) outward with respect to the position of the bolt 5. In order to solve this problem, the present invention forms the notches 4 (or welds) and, as shown in FIG. 1, the outer sides of both flange pieces 2a located between the notches 4 (or welds). A restriction means 10 is provided to face the wall 3a and restrict deformation of the flange pieces 2a to the outside. Specifically, the reinforcing member is attached so as to straddle the outer wall 3a of both flange pieces 2a located across the notch 4 (or the weld portion), and is fastened together with the flange 2 to the attachment target portion 7 by the bolt 5. 6, and the restricting surface portion 6 d applied to the outer wall 3 a of the reinforcing member 6 is used as the restricting means 10. The attachment target portion 7 is a frame or a bracket on the vehicle body side. In the following description, the case where all the notches 4 are used will be described, and the case of the weld portion will be omitted.

  3, (a) is an external perspective view of the reinforcing member 6 shown in FIG. 1, (b) is a side sectional explanatory view showing a state in which the reinforcing member 6 and the flange 2 are fastened together, and (c) is (b). It is BB sectional drawing in). The reinforcing member 6 has a shape having a closed cross-sectional space portion 6 a corresponding to the cross-sectional outline shape of the flange 2. In other words, the reinforcing member 6 has an upper base surface portion 6b and a lower base surface portion 6c applied to the upper surface and the lower surface of the flange 2, respectively, and a pair of regulating surface portions 6d (regulating means 10) applied to the outer wall 3a of the flange piece 2a. The closed cross-section space 6a is formed by being surrounded by these four surface portions. The upper base surface portion 6b and the lower base surface portion 6c are provided with insertion holes 6e for allowing the bolts 5 to be inserted therethrough. A base end side of the reinforcing member 6 is formed as an opening, and the reinforcing member 6 is externally fitted to the flange 2 from the distal end side of the flange 2 through this opening, and is fastened together with a bolt 5. Reference numeral 8 denotes a nut.

  As described above, if the structure is provided so as to be opposed to the outer wall 3a of both flange pieces 2a located with the notch 4 interposed therebetween, and restricting means 10 for restricting deformation of both flange pieces 2a to the outside is provided. The flange piece 2a divided into the left and right by the notch 4 is easily reduced in strength and easily deformed when subjected to an impact or the like. In particular, as in the present embodiment, a reinforcing member 6 is provided that is mounted so as to straddle the outer walls 3a of both flange pieces 2a located with the notch 4 interposed therebetween, and the reinforcing member 6 and the flange 2 are connected together by bolts 5. If it is set as the structure to fasten, the flange piece 2a divided into right and left can be integrally connected via the reinforcement member 6. FIG. And the regulation surface part 6d which comprises the regulation means 10 regulates a deformation | transformation of the flange piece 2a. Therefore, the restriction of the flange 2 as a whole can be compensated for by the restricting means 10, and the attachment strength of the fuel tank 1 can be maintained at a predetermined strength.

  Further, if the reinforcing member 6 has a closed cross-sectional space portion 6a corresponding to the cross-sectional outline shape of the flange 2, the strength of the reinforcing member 6 itself is increased because the closed cross-sectional space portion 6a is provided, and the flange 2 is reinforced. The function can be further enhanced. The material of the reinforcing member 6 is preferably a metal material from the viewpoint of strength, but may be made of a resin material as long as a predetermined strength is obtained.

  Next, a modification of the reinforcing member 6 is shown in FIG. 4, (a) is an external perspective view of the reinforcing member 6, (b) is an explanatory side sectional view showing a state in which the reinforcing member 6 and the flange 2 are fastened together, and (c) is a cross-sectional view taken along line CC in (b). It is sectional drawing. The reinforcing member 6 shown in FIG. 3 has a four-surface shape that forms the closed section space 6a. However, the reinforcing member 6 shown in FIG. 4 has one surface side (upper surface side) and both outer sides of the flange 2. This is a three-surface type with a U-shaped cross section applied to the wall 3a. Of course, the shape also satisfies the requirement of the present invention regarding the reinforcing member 6 "attached so as to straddle the outer walls 3a of the two flange pieces 2a sandwiching the notch 4".

  Although the reinforcing member 6 shown in FIG. 4 is inferior in strength to the reinforcing member 6 itself as compared with that shown in FIG. 3, it does not have the closed section space portion 6a, so that it can be easily manufactured. There are benefits. For example, when the reinforcing member 6 is made of a metal material, the shape shown in FIG. 3A is substantially difficult to form by punching, but the shape shown in FIG. 4A is possible. Further, even when the reinforcing member 6 is made of a resin material, in the shape of FIG. 3A, a slide type insert must be provided in the manufacturing mold, whereas the shape of FIG. By doing so, the manufacturing mold is not complicated.

  Next, the modification regarding the outer shape of the notch 4 and the flange 2 is demonstrated. In the shape of the narrow opening end portion 4a shown in FIG. 2B, the bolt insertion portion 4b is formed in a circular shape, so that when the parison flows into the tip of the flange piece 2a during blow molding, The part becomes an obstacle, and the layer structure of the parison at the tip of the flange piece 2a is likely to be disturbed. Further, in the outer shape of the flange 2 shown in FIG. 2 (b), that is, the shape in which the width gradually decreases from the wall portion of the fuel tank 1 toward the outside, the reinforcing member 6 (FIG. 3, FIG. 3) with respect to the outer wall 3a. The regulation function of FIG.

  For these problems, in the flange 2 shown in FIG. 5 ((a) is an external perspective view showing a modified example of the flange 2 and (b) is the same plan view), the outer walls 3a of both flange pieces 2a are parallel to each other. The notch 4 is formed along the outer wall 3a which is a plane parallel to each other, and the notch width dimension L is constant from the opening end 4a to the bolt insertion part 4b. It is the shape formed in. According to this shape, the parison flows smoothly to the tip of the flange piece 2a during blow molding, and the parison layer configuration is less likely to be disturbed.

  In this case, the reinforcing member 6 is shown in FIG. 6 ((a) is an external perspective view of the reinforcing member 6, (b) and (c) are a plan view and a sectional view showing the state in which the reinforcing member 6 is attached to the flange 2, respectively). As shown in FIG. 5, a base surface portion 6f applied to one surface side (upper surface side) of the flange, and a regulation surface portion 6g (regulation surface) formed on both end sides of the base surface portion 6f and applied to the outer walls 3a of both flange pieces 2a. And a member having a U-shaped cross section. Of course, the pair of regulating surface portions 6g are formed as surfaces parallel to each other.

  In this way, the outer walls 3a of both flange pieces 2a are formed as parallel surfaces, and the reinforcing member 6 is formed on the base surface portion 6f applied to one surface side of the flange 2 and on both ends of the base surface portion 6f. If the member has a U-shaped cross section having a regulating surface portion 6g applied to the outer wall 3a of both flange pieces 2a, the member is orthogonal to the outer wall 3a due to, for example, the action of inertial force during vehicle travel. Even when a force to move the flange 2 in both directions (P direction) is applied, the force received from the outer wall 3a of the flange piece 2a is effectively received by the restricting surface portions 6g parallel to each other. Can do. Therefore, the restriction function of the reinforcing member 6 with respect to the flange 2 is improved.

  Here, as described above, when the notch 4 is formed along the outer wall 3a and the notch width dimension L from the opening end 4a to the bolt insertion part 4b is constant, The following can be considered. As described above, the movement of the flange 2 in the direction orthogonal to the outer side wall 3a (P direction) is regulated by the regulating surface portion 6g of the reinforcing member 6, but the fuel tank 1 (FIG. 1) is deformed by a vehicle collision or the like. When a force is applied to move the flange 2 toward the inside of the fuel tank 1 (in the Q direction) along the surface direction of the outer wall 3a, the notch width dimension L is opened as a dimension larger than the diameter of the bolt 5. Since the end portion 4 a is formed uniformly, the flange 2 may easily move without being caught by the bolt 5.

  To solve this problem, as shown in FIG. 7 and FIG. 8, the front end side of the flange piece 2 a is brought into contact with the portion (end surface 6 h) facing the opening end portion 4 a of the reinforcing member 6, thereby What is necessary is just to form the control protrusion 9 which controls the movement of the flange 2 regarding the direction (Q direction) which goes to the inner side of the fuel tank 1 along. FIGS. 7A and 7B show a mode in which the restriction projections 9 are formed on the outer walls 3a of the left and right flange pieces 2a. FIG. 7A is an external perspective view, and FIG. FIG. 8 shows a mode in which the restricting projection 9 is formed on the upper surfaces of the left and right flange pieces 2a, (a) is an external perspective view, and (b) is an explanatory side sectional view. If such a restriction protrusion 9 is formed, the movement of the flange 2 in the Q direction is restricted by the restriction protrusion 9 coming into contact with the end surface 6 h of the reinforcing member 6. As a result, the fuel tank 1 (FIG. 1) is prevented from dropping from the attachment target portion 7.

  The preferred embodiments of the present invention have been described above. The form described is a case where the restricting means 10 is constituted by the restricting surface portions 6d and 6g of the reinforcing member 6, but as a modification of the restricting means 10, as shown in FIG. It is also possible to comprise the restriction wall portion 11. For example, on the attachment target portion 7 side, a recess is formed such that the outer portion of the flange 2 is fitted, and the inner wall of the recess is used as the regulation wall portion 11. Also with this configuration, since the deformation of the flange piece 2a is restricted by the restriction wall portion 11, a predetermined mounting strength can be maintained. Of course, the restricting wall portion 11 may be a protrusion that is erected on the flat mounting target portion 7. According to this configuration, since it is not necessary to provide the reinforcing member 6, the number of parts can be reduced, and the workability of attaching the fuel tank 1 is improved.

  In addition, the present invention is not limited to a fuel tank mounting structure mounted on an automobile, and is formed by blow molding, and a barrier material layer that suppresses permeation of the internal reservoir and inside and outside of this barrier material layer If it is related to a container having a multilayer cross-sectional structure including a thermoplastic resin layer positioned and attached to a mounting target part by a fastening member via a flange formed by a pinch-off part of a blow molding mold, It can be applied to any technical field.

1 is an external perspective view of a fuel tank in which the present invention is implemented. It is expansion explanatory drawing around a flange, Comprising: (a) is a longitudinal cross-sectional view, (b) is AA sectional drawing in (a). It is explanatory drawing of a reinforcement member, (a) is an external appearance perspective view of the reinforcement member shown in FIG. 1, (b) is longitudinal cross-sectional explanatory drawing which shows the state which fastened the reinforcement member and the flange with the volt | bolt, (c). FIG. 6 is a cross-sectional view taken along line BB in FIG. It is explanatory drawing which shows the modification of a reinforcing member, (a) is an external appearance perspective view of a reinforcing member, (b) is a longitudinal cross-sectional explanatory drawing which shows the state which fastened the reinforcing member and the flange with the volt | bolt, (c) is It is CC sectional drawing in (b). It is explanatory drawing of the modification of a flange, (a), (b) is an external appearance perspective view and a top view, respectively. It is explanatory drawing of the reinforcement member corresponding to the flange shape of FIG. 5, (a) is an external appearance perspective view of a reinforcement member, (b), (c) is a top view and a cross section which respectively show the state which attached the reinforcement member to the flange FIG. It is explanatory drawing at the time of forming a control protrusion in the outer wall of a right and left flange piece, (a) is an external appearance perspective view, (b) is a plane explanatory drawing. It is explanatory drawing at the time of forming a control protrusion on the upper surface of a left and right flange piece, (a) is an external appearance perspective view, (b) is sectional explanatory drawing. It is an external perspective view of a fuel tank when a bolt mounting hole is drilled in a flange. FIG. 10 is a side sectional view around the flange shown in FIG. 9.

Explanation of symbols

1 Fuel tank (container)
DESCRIPTION OF SYMBOLS 1A Inner thermoplastic resin layer 1C Barrier material layer 1F Outer thermoplastic resin layer 2 Flange 2a Flange piece 3, 3a Outer side wall 4 Notch 4a Open end 4b Bolt insertion part (fastening member insertion part)
5 Bolt (fastening member)
6 Reinforcing member 6a Closed section space portion 6f Base surface portion 6g Restricting surface portion 7 Attachment target portion 9 Restricting protrusion 10 Restricting means L Notch width dimension

Claims (7)

It is formed by blow molding and has a multilayer cross-sectional structure including a barrier material layer and a thermoplastic resin layer located inside and outside of this barrier material layer, and is attached to a mounting target portion by a fastening member via a flange formed by a pinch-off portion. A container mounting structure,
In the flange, a notch or a weld part is formed so as to continue from the insertion part of the fastening member to the outer wall of the flange,
A barrier material layer, characterized in that a barrier material layer is provided opposite to the outer walls of both flange pieces located across the notch or weld portion, and provided with a restricting means for restricting deformation of both flange pieces to the outside. A container mounting structure.   2. The attachment structure for a container having a barrier material layer according to claim 1, wherein the restriction means includes a restriction wall portion formed on the attachment target portion side. It is attached so as to straddle the outer walls of both flange pieces located across the notch or the weld part, and a reinforcing member is provided to be fastened together with the flange on the attachment target part by a fastening member,
The mounting structure for a container having a barrier material layer according to claim 1, wherein the restricting means includes a restricting surface portion applied to outer walls of the flange pieces of the reinforcing member.   The mounting structure for a container having a barrier material layer according to claim 3, wherein the reinforcing member has a shape having a closed cross-sectional space corresponding to a cross-sectional outline shape of the flange. The outer walls of both flange pieces are formed as surfaces parallel to each other,
The reinforcing member has a U-shaped cross section having a base surface portion applied to one surface side of the flange, and a regulation surface portion formed on both end sides of the base surface portion and applied to the outer walls of the two flange pieces. The mounting structure for a container having a barrier material layer according to claim 3, wherein the mounting structure is a exhibited member. The notch is formed along the outer walls of the two flange pieces that are parallel to each other, and the notch width dimension is constant from the opening end to the insertion part of the fastening member,
On the front end side of the flange piece, a restricting protrusion is formed that restricts the movement of the flange in the direction toward the inside of the container along the notch direction by contacting the portion facing the opening end of the reinforcing member. The mounting structure for a container having a barrier material layer according to claim 5.   The said container is a fuel tank mounted in a motor vehicle, The attachment structure of the container which has a barrier material layer in any one of Claim 1 thru | or 6 characterized by the above-mentioned.

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