JP4990481B2 - Air gap filler - Google Patents

Description

  The present invention relates to a void filler that fills voids inside a hollow structure represented by, for example, a pillar of a vehicle.

  2. Description of the Related Art Conventionally, a void is filled in a hollow structure represented by a pillar of a vehicle and the like, and the vibration damping and sound insulation of the hollow structure are enhanced by the foam. A void filler is used to fill the voids in the hollow structure with the foam. The gap filler includes a foam base material that foams by heating to form a foam, and a support member that supports the foam base material inside the hollow structure. In order to use this void filler, first, the void filler is attached to the inside of the hollow structure. Next, when the hollow structure is heated from the outside, the heat is transferred from the surface of the foam base to the inside, so that the foam base is softened and foamed. A foamed body is formed by curing the foamed base material that has expanded along with the foaming. As a result, the foam is filled in the voids inside the hollow structure.

This type of void filler is desired to efficiently close the voids of the hollow structure. For that purpose, it is necessary to promote foaming (expansion) of the foamed base material in a predetermined direction. For example, when applied to a pillar as a hollow structure, if the foam base expands (expands) in a direction perpendicular to the pillar longitudinal direction, not the pillar longitudinal direction, the pillar voids are efficiently filled with the foam. Will be. For example, in the gap filling device described in Patent Document 1, a support wall is provided on a support member that supports an annular foam base material, and the internal peripheral surface of the foam base material is supported by the support wall. Yes. And this space | gap filler is comprised so that the direction in which a foaming base material foams (expands) with a dam wall may be controlled.
JP 2003-146243 A

  By the way, the stress applied in the molding process remains in the foam base material. The residual stress of the foam substrate is released when the foam substrate is heated and softened. Then, deformation (swell) due to the residual stress occurs in the foamed base material. Since the foamed base material is foamed (expanded) while being affected by the swell, it is difficult to foam (expand) in a predetermined direction. Since the foamed base material of the above-mentioned document is only supported by the inner wall of the chamfer wall, it is difficult to suppress the undulation of the foamed base material due to residual stress. As a result, it becomes difficult to effectively fill the voids in the hollow structure with the foam, such as a gap between the voids in the hollow structure and the foam.

  This invention is made | formed in view of such a situation, The place made into the objective is suppressing a malfunction resulting from the residual stress of a foaming base material, and a foam is effective in the space | gap of a hollow structure. It is an object of the present invention to provide a void filler that can be filled in a container.

The invention according to claim 1 in order to achieve the above object, a supporting member that supports the outer portion foaming base material and the foaming base material foamed by heating, voids disposed inside the hollow structure In the filling tool, the support member includes a support plate to which the foam base material is fixed, and the foam base material has a frame shape along the outer peripheral edge of the support plate and is fixed to the outer peripheral edge of the support plate. A peripheral wall portion extending along the inner periphery of the foam base material is erected on the inner side of the outer peripheral edge of the support plate, and a frame plate extending outward is provided on the peripheral wall portion, and the peripheral wall portion and the frame plate Is provided apart from the foam base material, and a support plate located between the foam base material and the peripheral wall portion is provided with a flow hole through which a processing liquid for coating the hollow structure is passed. It is a summary.

According to the said structure, when a foaming base material heat-deforms, the deformation | transformation (swelling) which originates in the residual stress of a foaming base material can be restrained with a surrounding wall part and a frame board. That is, when the residual stress of the foam base material is removed, the generation of waviness in the foam base material is suppressed by the peripheral wall portion and the frame plate. Therefore, since the direction in which the foam base material foams (expands) is regulated by the peripheral wall portion and the frame plate in a state in which the problems due to the residual stress of the foam base material are suppressed, the gap between the hollow structure and the gap filler Can be effectively filled with foam.
Further, since a space surrounded by the support plate, the peripheral wall portion, and the frame plate is formed on the inner side of the inner peripheral surface of the foamed base material, the processing liquid can be circulated through the space and the flow holes. Therefore, it is possible to suppress the treatment liquid from staying inside the hollow structure.

In order to achieve the above object, the invention according to claim 2 is provided with a void filling that includes a foamed base material that foams by external heating and a support member that supports the foamed base material, and is disposed inside the hollow structure. The support member has a plurality of projecting portions, and the foam base is integrally formed in a frame shape along an outer peripheral edge of the support member, and the foam base has a plurality of projecting portions. A plurality of insertion holes penetrating through each of the insertion holes, and the protrusions are inserted into the insertion holes, thereby restricting deformation of the foam base material due to heating. A plurality of the protrusions are arranged at each outer peripheral edge connecting portion that connects the outer peripheral edge corners that are the corners of the outer peripheral edge , and the support member includes the outer peripheral corner part and the outer peripheral edge part. A continuous surface by the outer periphery connecting portion, and the same from the continuous surface. And summarized in that the direction the plurality of projections is provided upright.

In order to achieve the above object, the invention according to claim 3 is provided with a void filling that includes a foam base material that foams by external heating and a support member that supports the foam base material, and is disposed inside the hollow structure. The support member is provided with a plurality of columnar protrusions, the foam base is integrally formed in a frame shape along the outer periphery of the support member, and the foam base has a plurality of protrusions. A plurality of insertion holes are penetrated correspondingly, and each projection is inserted into each insertion hole, and the plurality of projections are arranged along the outer periphery of the support member, and are corners of the outer periphery. A plurality of the protrusions are arranged at each outer peripheral edge connecting part connecting the outer peripheral edge corners, and the support member has a continuous surface by the outer peripheral edge corner part and the outer peripheral edge connecting part, and the continuous surface be summarized in that said in the same direction a plurality of protrusions formed by upright from .

According to the structure of Claim 2 and Claim 3 , the residual stress of a foaming base material is removed, controlling the deformation | transformation of a foaming base material by the projection part inserted in a foaming base material. Therefore, generation | occurrence | production of the wave | undulation in a foaming base material is suppressed. That is, the malfunction resulting from the residual stress of a foaming base material is suppressed, As a result, a foam can be effectively filled into the space | gap of a hollow structure and a space | gap filler. Further, when the foamed base material is deformed by heating, deformation of the foamed base material at the outer peripheral edge of the support member is suppressed, so that the foamed base material is suppressed from sagging from the outer peripheral edge of the support member. As a result, the foam can be effectively filled into the gap between the hollow structure and the gap filler. Furthermore, according to the structure of Claim 3 , the resistance when a foaming base material foams (expands) in the extending direction of the protrusion can be suppressed by forming the protrusion in a columnar shape.

  ADVANTAGE OF THE INVENTION According to this invention, the foam can be effectively filled into the space | gap of a hollow structure body by suppressing the malfunction resulting from the residual stress of a foaming base material.

(First embodiment)
DESCRIPTION OF EMBODIMENTS Hereinafter, a first embodiment in which the present invention is embodied in a gap filler that is applied to a pillar of a vehicle will be described in detail with reference to FIGS.

  As shown in FIGS. 1 and 2, the gap filler 11 includes a square frame-shaped foam base material 12 and a quadrangular support member 13. The support member 13 includes a square frame-shaped support plate 14, and the foam base 12 is fixed to the support plate 14. As shown in FIG. 3A, the support member 13 is configured to be supported inside a cylindrical pillar 51 serving as a hollow structure, and the gap filler 11 is disposed inside the pillar 51. In addition, the pillar 51 is comprised from a pair of steel plate, and it is formed in a cylinder shape, when the collar parts of each steel plate are joined by welding etc. FIG.

  As shown in FIGS. 1 and 2, the foam base 12 has a frame shape along the outer peripheral edge of the support plate 14 and is fixed to the outer peripheral edge of the support plate 14. The size of the foam base 12 is set so that a predetermined interval is provided between the outer peripheral surface of the foam base 12 and the inner surface of the pillar 51 when the foam base 12 is disposed inside the pillar 51. The The foam base 12 is fixed to the support member 13 by a locking means (not shown), locking means using a locking claw or the like, adhesion by an adhesive, or the like.

  The foam base 12 is formed of a foam material, and is configured to foam by heating. The foam material contains a synthetic resin, a foaming agent, a crosslinking agent, a filler, and the like. Examples of the synthetic resin include a thermosetting resin and a thermoplastic resin. Examples of the thermosetting resin include an epoxy resin, a phenol resin, a urethane resin, and an acrylic resin. Examples of the thermoplastic resin include polyolefin, EVA (ethylene / vinyl acetate copolymer), EPM (ethylene / propylene rubber), SBS (styrene / butadiene / styrene block copolymer) and the like. Examples of the foaming agent include azodicarbonamide and dinitropentamethylenetetramine, examples of the crosslinking agent include well-known dimethylurea and dicyandiamide, and examples of the filler include calcium carbonate, barium sulfate, ferrite, and silica.

  On the inner side of the outer peripheral edge of the support plate 14, that is, on the inner side of the inner peripheral surface of the foamed base material 12, a square frame-shaped peripheral wall portion 15 is erected substantially orthogonally to the support plate 14. As shown in FIG. 2, the peripheral wall portion 15 is provided along the inner periphery of the foam base material 12 and the outer peripheral surface of the peripheral wall portion 15 is configured to be separated from the inner peripheral surface of the foam base material 12. Yes.

  As shown in FIGS. 1 and 2, a rectangular frame-shaped frame plate 16 is provided on the peripheral wall portion 15 so as to extend outward from the peripheral wall portion 15. The frame plate 16 is configured to be separated from the foam base material 12, and is surrounded by the support plate 14, the peripheral wall portion 15, and the frame plate 16 inside the inner peripheral surface of the foam base material 12 as shown in FIG. 2. A space 17 is formed. The support plate 14 positioned between the foamed base material 12 and the peripheral wall portion 15 is provided with a plurality of rectangular flow holes 14a through which a treatment liquid for coating the pillar 51 is passed. And it is comprised so that process liquids, such as an electrodeposition liquid and a washing | cleaning liquid, may distribute | circulate in the thickness direction of the support plate 14 by these distribution | circulation holes 14a.

  The inside of the frame plate 16 is configured to be closed by a square plate-like closing plate 18. Further, an engagement protrusion 19 is provided on one side edge of the support plate 14. As shown in FIG. 3A, the engagement protrusion 19 is engaged with a mounting hole 52 penetrating the steel plate constituting the pillar 51. Thus, the support member 13 is configured to be supported inside the pillar 51.

  The support member 13 composed of the support plate 14, the peripheral wall portion 15, and the frame plate 16 is integrally formed of a thermoplastic resin such as nylon. In addition, in order to suppress the deformation | transformation at the time of making the foaming base material 12 heat-foam, the thermoplastic resin which comprises the supporting member 13 has what has a softening temperature higher than the temperature which a foaming material foams.

  The support member 13 is provided with a locking portion that uses a locking hole, a locking claw, and the like (not shown), and the foam base 12 is fixed to the support plate 14 by the locking portion. Further, the foam base 12 can be fixed to the support plate 14 by bonding with an adhesive.

  As shown in FIG. 3A, the gap dimension L between the outer peripheral surface of the peripheral wall 15 and the inner peripheral surface of the foamed base material 12 is the width dimension of the foamed base material D (hereinafter referred to as the base material width dimension D). ) Is preferably larger than 1/3 (= D / 3) of the substrate width dimension D, and more preferably larger than 1/2 (= D / 2) of the substrate width dimension D. If the gap dimension L is equal to or less than the substrate width dimension D / 3, the processing liquid may not easily flow. The gap dimension L is preferably smaller than the substrate width dimension D × 1.5, and more preferably smaller than the substrate width dimension D. If the gap dimension L is equal to or greater than the substrate width dimension D × 1.5, it may be difficult to effectively regulate the foaming (expansion) direction of the foamed substrate 12 by the peripheral wall portion 15. The height dimension H of the peripheral wall portion 15 is set to be larger than the thickness dimension T of the foam base material 12, and the peripheral wall portion 15 is configured to sufficiently regulate the direction of foaming (expansion) of the foam base material 12. ing. The protrusion width dimension d, which is the protrusion width from which the frame plate 16 protrudes from the outer peripheral surface of the peripheral wall portion 15, is preferably smaller than the gap dimension L from the viewpoint that the foam base 12 is easily fixed to the support member 13.

  In order to use the gap filler 11, first, the engagement protrusion 19 is engaged with the attachment hole 52 to fix the gap filler 11 to the inside of one steel plate. Subsequently, the pillars 51 are formed by joining the flange portions of the respective steel plates by welding or the like. At this time, the gap filler 11 is arranged so that the support plate 14 is substantially perpendicular to the longitudinal direction of the pillar 51. The vehicle body having the pillar 51 is subjected to coating such as electrodeposition coating or baking coating. Here, in the electrodeposition coating process of the vehicle body, the vehicle body is pulled up from the treatment tank after being immersed in a treatment tank such as an electrodeposition tank in which the electrodeposition liquid is stored and a washing tank in which the washing liquid is stored. . At this time, the peripheral wall portion 15 and the frame plate 16 are provided apart from the foam base material 12. Further, the support plate 14 located between the foam base 12 and the peripheral wall portion 15 is provided with a flow hole 14a. Therefore, treatment liquids such as an electrodeposition liquid and a washing liquid can flow in the longitudinal direction of the pillar 51 through the space 17 and the flow holes 14a.

  Subsequently, when the vehicle body is heated in the drying furnace in the vehicle manufacturing process, the gap filler 11 is heated at a predetermined temperature for a predetermined time. Accordingly, when the foam base 12 is heated from the outside, softening of the foam base 12 starts and the residual stress of the foam base 12 is released.

  At this time, the support plate 14 is provided with a peripheral wall portion 15, and the peripheral wall portion 15 is provided with a frame plate 16. Therefore, as shown in FIG. 3B, when the foam base 12 is deformed with undulation due to residual stress, the deformation can be restrained by the peripheral wall portion 15 and the frame plate 16. Next, when the foam base 12 starts foaming (expanding), the direction of foaming (expanding) is regulated by the peripheral wall portion 15 and the frame plate 16. Therefore, as shown in FIG. 3 (c), the foam base 12 can be foamed (expanded) in the direction of closing the gap between the gap filler 11 and the pillar 51, that is, in the direction substantially perpendicular to the longitudinal direction of the pillar 51. . Subsequently, the foamed foam base 20 is formed by curing the synthetic resin contained in the foamed material by a cross-linking reaction or the like. In this manner, the foam 20 is filled in the voids in the pillar 51, and the foam 20 improves the sound absorption, sound insulation, vibration control, dustproofness, and the like of the pillar 51.

The effects exhibited by the first embodiment are described below.
The foam base 12 is fixed to the support plate 14 constituting the support member 13, and the peripheral wall 15 is erected along the inner periphery of the foam base 12. Further, the peripheral wall portion 15 is provided with a frame plate 16 extending outward. Therefore, when the foam base 12 is thermally deformed, deformation (swell) caused by the residual stress of the foam base 12 can be restrained by the peripheral wall 15 and the frame plate 16. That is, when the residual stress of the foam base material 12 is removed, the peripheral wall portion 15 and the frame plate 16 suppress the occurrence of waviness in the foam base material 12. Accordingly, the direction in which the foamed base material 12 foams (expands) is restricted by the peripheral wall portion 15 and the frame plate 16 in a state in which problems due to the residual stress of the foamed base material 12 are suppressed. Therefore, the foam 20 can be effectively filled in the gap between the pillar 51 and the gap filler 11.

  The peripheral wall portion 15 and the frame plate 16 are provided apart from the foam base material 12. Further, the support plate 14 positioned between the foam base 12 and the peripheral wall portion 15 is provided with a flow hole 14a. According to this configuration, since the space 17 surrounded by the support plate 14, the peripheral wall portion 15, and the frame plate 16 is formed on the inner side of the inner peripheral surface of the foamed base material 12, the treatment liquid is passed through the space 17 and the circulation hole 14a. Can be distributed. Therefore, it is possible to prevent the processing liquid from staying inside the pillar 51.

Note that the first embodiment may be modified as follows.
As shown in FIG. 4A, the support member 24 may be configured by providing a closing plate 23 inside the peripheral wall portion 15. Further, as shown in FIG. 4B, the support member 26 may be configured by providing a closing plate 25 inside the support plate 14. Even if comprised in this way, the same effect as the said embodiment is acquired.

-You may provide the said surrounding wall part 15 and the frame board 16 so that the foaming base material 12 may contact | adhere.
The peripheral wall portion 15 may be provided with a predetermined angle with respect to the support plate 14 without providing the peripheral wall portion 15 substantially orthogonal to the support plate 14.

-You may comprise without providing the said circulation hole 14a.
-You may change the shape of the circulation hole 14a to other shapes, such as circular shape and a triangular shape. Further, one or more circulation holes 14a may be provided. Even if the gap filling tool 11 is inclined, it is preferable that a plurality of the flow holes 14a are provided over the entire circumference of the support plate 14 at a predetermined interval because the treatment liquid can be smoothly flowed out.

  -You may change the said support plate 14 according to shapes other than square plate shape, ie, the shape of the hollow structure to apply. In addition, what is necessary is just to change the shape of the said foaming base material 12, the surrounding wall part 15, and the frame board 16 according to the shape of a support plate.

-You may use the said foam filling tool for hollow structures other than pillars 51, such as a front pillar and a center pillar, for example, a rocker panel, the inside of a door, various hollow panels in a building, etc.
(Second Embodiment)
Hereinafter, the second embodiment of the present invention will be described in detail based on FIGS. 5 to 7 with a focus on differences from the first embodiment.

  As shown in FIGS. 5 and 6, the gap filler 31 includes a triangular frame-shaped foam base material 32 and a triangular support member 33. The support member 33 includes a triangular frame-shaped support plate 34, a peripheral wall portion 35 erected on the inner periphery of the support plate 34, and a closing portion 36 provided on the inner side of the peripheral wall portion 35. A columnar protrusion 37 is erected on the support plate 34, and the foam base 32 is fixed to the support member 33 with the protrusion 37 inserted.

  A plurality of protrusions 37 are provided along the outer peripheral edge of the support plate 34. Here, “provided along the outer peripheral edge” means provided along the outer peripheral edge connecting portion 39, that is, a portion connecting the outer peripheral edge corner portions 38, which are corners on the outer peripheral edge of the support member 33 (support plate 34). Is to be. The protrusion 37 in the present embodiment is provided along the outer peripheral corner portion 38 in addition to the outer peripheral connection portion 39.

  A closing portion 36 is provided inside the support member 33 so as to bulge inside the foam base material 32, and a peripheral wall portion 35 is formed on the outer peripheral surface of the closing portion 36. The peripheral wall portion 35 is configured to support the inner peripheral surface of the foam base material 32 by the outer peripheral surface thereof. An insertion hole 40 into which the protruding portion 37 is inserted is provided in the foam base material 32 so as to correspond to the protruding portion 37. The foam base 32 is fixed to the support plate 34 with the protrusions 37 inserted into the insertion holes 40.

  As shown in FIG. 5, the relationship between the height dimension h1 of the protrusion 37 and the thickness dimension h2 of the foamed base material 32 preferably satisfies the relationship of height dimension h1 ≧ thickness dimension h2. By satisfying this relationship, it becomes easy to sufficiently regulate the heat deformation of the foam base material 32.

  Now, as shown in FIG. 7A, the gap filler 31 provided in the pillar 51 is heated from the outside at a predetermined temperature for a predetermined time in a drying furnace or the like. Accordingly, when the foam base 32 is heated, the foam base 32 starts to soften and the residual stress of the foam base 32 is released. At this time, protrusions 37 are provided on the support member 33, and these protrusions 37 are inserted into the foam base material 32. Therefore, when the foamed base material 32 is deformed by the residual stress, the deformation is regulated by the protrusion 37. That is, the residual stress of the foaming base material 32 is removed while suppressing the deformation of the foaming base material 32 by the protrusions 37. Therefore, as shown in FIG. 7B, the foam base 32 can be foamed (expanded) in a direction that closes the gap between the gap filler 31 and the pillar 51, that is, in a direction substantially orthogonal to the longitudinal direction of the pillar 51. . Subsequently, the foamed base material 32 is cured to form the foam 41.

The effects exhibited by the second embodiment will be described below.
A plurality of projecting portions 37 are erected on the support member 33, and the projecting portions 37 are inserted into the foam base material 32. And the deformation | transformation with the heating of the foaming base material 32 is controlled by the projection part 37, It is comprised. Therefore, the residual stress of the foam base material 32 is removed while the deformation of the foam base material 32 is regulated by the protrusion 37. Therefore, the occurrence of waviness in the foam base material 32 is suppressed. Therefore, the malfunction resulting from the residual stress of the foam base material 32 is suppressed. As a result, the foam 41 can be effectively filled in the gap between the pillar 51 and the gap filler 31. Furthermore, by forming the protrusions 37 in a columnar shape, it is possible to avoid the foaming (expansion) of the foam base material 32 from being inhibited as much as possible. By forming the protrusion 37 in a columnar shape, it is possible to suppress resistance when the foaming base material 32 is foamed (expanded) in the extending direction of the protrusion 37.

  The protrusions 37 are arranged along the outer peripheral edge of the support member 33. According to this configuration, deformation of the foam base material 32 at the outer peripheral edge of the support member 33 is suppressed when the foam base material 32 is thermally deformed. Therefore, it is suppressed that the foaming base material 32 hangs down from the outer peripheral edge of the support member 33. As a result, the foam 41 can be effectively filled in the gap between the pillar 51 and the gap filler 31.

  The foam base 32 is formed in a frame shape, and the support member 33 is provided with a peripheral wall 35, and the peripheral wall 35 supports the inner peripheral surface of the foam base 32. Therefore, the direction in which the foam base 32 is foamed (expanded) can be regulated by the peripheral wall portion 35.

Note that the second embodiment may be modified as follows.
The protrusion 37 may be changed to a shape other than a columnar shape, for example, a columnar shape such as a quadrangular columnar shape, a square shape, a conical shape, or the like.

  -You may change the support member 33 into flat form, without providing the surrounding wall part 35 in the said support member 33. As shown in FIG. In this case, you may change the foaming base material 32 into the shape match | combined with the support member. Further, in addition to arranging the protrusions 37 along the outer peripheral edge of the support member, the protrusions 37 may be provided at the central portion of the support member. In addition, the protrusions 37 may be arranged randomly.

  -You may change the said space | gap filler 31 to the space | gap filler 42 shown to Fig.8 (a) and FIG.8 (b). That is, the support member 43 is configured by providing a square plate-like blocking portion 45 on the inner peripheral surface of a square frame-like support plate 44. A plurality of columnar protrusions 46 are arranged along the circumferential direction of the support plate 44 at substantially the center of the outer peripheral surface of the support plate 44. The square frame-shaped foamed base material 47 is fixed to the support plate 44 in a state where the protrusions 46 are inserted into the insertion holes 48.

The disassembled perspective view which shows the space | gap filler in 1st Embodiment. The perspective view which shows a space | gap filler. (A) is sectional drawing which shows the space | gap filler with which the pillar was mounted | worn, (b) is sectional drawing which shows the softened state of a foaming base material, (c) is sectional drawing which shows after foaming of a foaming base material. (A) And (b) is a fragmentary sectional view which shows another example of the space | gap filler in 1st Embodiment. The disassembled perspective view which shows the space | gap filler in 2nd Embodiment. The perspective view which shows a space | gap filler. (A) is sectional drawing which shows the space | gap filler with which the pillar was mounted | worn, (b) is sectional drawing which shows the foaming base material after foaming. (A) is a perspective view which shows another example of the space | gap filler in 2nd Embodiment, (b) is a fragmentary sectional view in the 8b-8b line | wire.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 11, 31, 42 ... Space | gap filler, 12, 32, 47 ... Foam base material, 13, 24, 26, 33, 43 ... Support member, 14, 34, 44 ... Support plate, 14a ... Flow-through hole, 15, 35 ... peripheral wall part, 16 ... frame plate, 17 ... space, 18, 23, 25 ... closing plate, 19 ... engaging protrusion, 20, 41 ... foam, 36, 45 ... closing part, 37, 46 ... protruding part, 38 ... outer peripheral corner, 39 ... outer peripheral connecting portion, 40, 48 ... insertion hole, 51 ... pillar, 52 ... mounting hole.

Claims (3)

In a gap filling device provided with a foam base material that foams by external heating and a support member that supports the foam base material, the support member is a support plate to which the foam base material is fixed. The foam base material has a frame shape along the outer peripheral edge of the support plate and is fixed to the outer peripheral edge of the support plate, and on the inner periphery of the foam base material inside the outer peripheral edge of the support plate. A peripheral wall portion is erected, a frame plate extending outward is provided on the peripheral wall portion, and the peripheral wall portion and the frame plate are provided apart from the foam base material, and the foam base material and the A gap filler, wherein a support plate positioned between the peripheral wall portion is provided with a flow hole for flowing a treatment liquid when the hollow structure is coated. In the gap filling device provided with a foam base material that foams by external heating and a support member that supports the foam base material, and disposed inside the hollow structure, the support member is provided with a plurality of protrusions, The foam base is integrally formed in a frame shape along the outer peripheral edge of the support member, and the foam base is provided with a plurality of insertion holes corresponding to the plurality of protrusions, and each protrusion has a protrusion. And a plurality of protrusions are arranged along the outer peripheral edge of the support member and are corners of the outer peripheral edge. A plurality of the protrusions are arranged on each outer peripheral edge connecting part that connects the outer peripheral corners ,
The support member has a surface that is continuous by the outer peripheral edge corner and the outer peripheral edge connecting portion, and the plurality of protrusions are erected in the same direction from the continuous surface. Filling tool. In a gap filling device provided with a foam base material that foams by external heating and a support member that supports the foam base material, and a plurality of columnar protrusions are erected on the support member. The foam base is integrally formed in a frame shape along the outer peripheral edge of the support member, and the foam base is provided with a plurality of insertion holes corresponding to a plurality of protrusions, Each protrusion is inserted, the plurality of protrusions are arranged along the outer peripheral edge of the support member, and the protrusion is connected to each outer peripheral edge connecting part connecting the outer peripheral edge corners which are corners of the outer peripheral edge. Multiple placement ,
The support member has a surface that is continuous by the outer peripheral edge corner and the outer peripheral edge connecting portion, and the plurality of protrusions are erected in the same direction from the continuous surface. Filling tool.

Images