JP2019043111A - Joined structure - Google Patents

Abstract

To provide a joined structure in which a water content or moisture hardly flows via a through-hole from one space to the other space, with regard to the two spaces divided by two members to be joined.SOLUTION: A joined structure 1 is formed by joining a first member 10 to be joined and a second member 20 to be joined, so that a first space S1 and a second space S2 are divided in such a state that the first member 10 and the second member 20 are overlapped with each other. Through-holes 11 and 21, penetrating through the first and second members 10 and 20, are formed in the first and second members, respectively. The first and second members 10 and 20 are joined via a joining member 30 inserted in the through-holes 11 and 21. The first member 10 is formed by laminating a first reinforced layer 13 formed with a fiber-reinforced resin, a foaming layer 14 formed with a foamed resin, and a second reinforced layer 15 formed with a fiber-reinforced resin, sequentially in a thickness direction from the first space S1 along the second space S2. The second reinforced layer 15 is overlapped on the second member 20.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a bonding structure in which a first bonding member and a second bonding member are bonded by a bonding member.

  Conventionally, when joining two to-be-joined members, these are piled up and these are joined with an adhesive agent etc., these end surfaces are butt | matched and they are joined with an adhesive agent etc. For example, Patent Document 1 proposes a bonding structure in which bonding members serving as a caul plate are bonded to surfaces of flat flat members to be bonded to each other in a state in which the end faces of the two members to be bonded are spaced from each other. It is done. In this joining structure, a fiber reinforced resin in which a reinforcing fiber is impregnated with a synthetic resin is used for the two members to be joined and the joining member.

JP, 2016-211370, A

  In the case where two members to be joined as shown in Patent Document 1 are joined such that the first space and the second space are partitioned in a state where they are superimposed, through holes are formed in these members to be joined. In some cases, bonding may be performed by a bonding member via the through hole.

  However, in this case, in the case where one of the first and second spaces is humid relative to the other space, etc., moisture, moisture, etc. may be formed through the through hole formed in the member to be joined. May flow from one space to the other.

  The present invention has been made in view of such a point, and for two spaces partitioned by two members to be joined, water or moisture may be introduced from one space to the other via a through hole. An object of the present invention is to provide a junction structure in which moisture and the like are difficult to flow into.

  In view of the above problems, in the bonding structure according to the present invention, the first cover is divided into a first space and a second space in a state in which the first bonding member and the second bonding member are superimposed. A bonding structure in which a bonding member and the second bonding member are bonded, and the first bonding member and the second bonding member are overlapped on the first bonding member and the second bonding member. In the combined state, a penetrating through hole is formed, and the first joined member and the second joined member are joined via a joining member inserted into the through hole, (1) The member to be joined includes a first reinforcing layer made of a fiber reinforced resin, a foam layer made of a foamed resin, and a second reinforced layer made of a fiber reinforced resin in the thickness direction from the first space to the second space. Layers are stacked in order, and the second reinforcing layer overlaps the second bonded member. It is matched.

  According to the present invention, the first and second members to be joined are joined via the joining member inserted in the through hole in a state in which the first and second members are joined. The first space and the second space can be partitioned by the members to be joined. Here, in the case where the first space is humid compared to the second space, etc., moisture, moisture, etc. may be extracted from the first space via the through holes formed in the first and second members to be joined. It is easy to flow into the second space. However, in the present invention, since the foam layer made of the foam resin is formed on the first member to be joined, it is possible to absorb or absorb moisture or moisture flowing into the through holes with the foam resin of the foam layer. . Thus, it is possible to reduce the inflow of moisture, moisture or the like from the first space to the second space through the through hole with respect to the two spaces partitioned by the first and second members to be joined. .

  As a more preferable aspect, the reinforcing fibers constituting the fiber reinforced resin of the second reinforcing layer are carbon fibers, and the bonding member is made of a metal material. Here, when the reinforcing fiber of the second reinforcing layer is carbon fiber and the joining member is made of a metal material, when moisture or moisture flows in, galvanic is generated on the surface of the joining member in contact with the carbon fiber by the moisture or humidity. Corrosion is likely to occur. However, in the present embodiment, such galvanic corrosion can be suppressed because water or moisture is difficult to be supplied to the surface of the bonding member in contact with the carbon fiber due to water absorption or moisture absorption by the foam layer described above.

  Furthermore, for example, when the second member to be joined has a reinforcing layer made of a fiber reinforced resin in which carbon fibers are reinforced, it is also possible to suppress galvanic corrosion in the portion of the joining member in contact with the carbon fiber of the reinforcing layer. Can.

  Here, the second bonded member may have a reinforcing layer made of a fiber reinforced resin containing carbon fibers as reinforcing fibers, as long as a reinforcing layer is present in the second bonded member, the second bonded member The member includes not only the case where the first reinforcing layer, the foam layer, and the second reinforcing layer are laminated similarly to the first member to be joined, but also the case where the second member to be joined consists only of the reinforcing layer.

  As a further preferable aspect, in the thickness direction along the second space from the first space, the second bonded member includes a first reinforcing layer made of a fiber reinforced resin, a foam layer made of a foamed resin, and fibers. And a second reinforcing layer made of a reinforcing resin is laminated.

  According to this aspect, since the second members to be joined include the foam layer, the foam layers of the first and second members to be joined are present between the first space and the second space. The foam layer can thermally insulate the first space and the second space. As a result, dew condensation on the surfaces of the first and second members to be joined can be prevented.

  As a further preferable aspect, a portion where the first bonding member and the second bonding member overlap is bonded via an adhesive. According to this aspect, it is possible to absorb or absorb moisture or moisture flowing through the through hole from the first space on the first reinforcement layer side before reaching the foam layer. This can suppress deterioration of the adhesive due to moisture or humidity.

  As a further preferable aspect, the first to-be-joined member has a first tubular portion, and the second to-be-joined member overlaps the inside of the first tubular portion so as to overlap with the first tubular portion. And the second space is formed in the internal space of the first and second cylindrical portions, and the first and second members to be joined are formed. In the state where the external space of the member is the first space and the second cylindrical portion is inserted into the first cylindrical portion, the through hole includes the first cylindrical portion and the second cylindrical portion. And the joint member joins the first cylindrical portion and the second cylindrical portion in a state where the joint member is inserted into the through hole.

  According to this aspect, the internal space of the portion where the first tubular portion of the first member to be joined and the second tubular portion of the second member to be joined inserted into the inside overlap each other is the second space And the outside is the first space. In such a case, in the case where the first space is humid compared to the second space, etc., moisture, moisture, etc. may be removed via the through holes formed in the first and second cylindrical portions. It is easy to flow from the space to the second space, which is the internal space. However, in this aspect, since the foam layer made of the foam resin is formed in the first tubular portion of the first member to be joined, moisture, moisture, etc. flowing into the through holes can be treated with the foam resin of the foam layer. It can absorb or absorb water. This can reduce the inflow of moisture, moisture or the like into the second space, which is the internal space, through the through hole.

  In a more preferable aspect, the second space is a sealed space. According to this aspect, when the second space is a sealed space, the water or moisture which has flowed from the first space into the second space through the through hole is likely to be collected. Such a phenomenon can be avoided by the foam layer of 1 joined member. Furthermore, when the joining member is a metal member, corrosion of the joining member facing the second space can be suppressed, so even if the second space is a sealed space, corrosion of the joining member It is possible to reduce the work of confirming the state.

  According to the present invention, it is difficult for water, moisture, or the like to flow from one space to the other space through the through hole with respect to two spaces partitioned by two members to be joined.

It is a typical perspective view of junction structure concerning a 1st embodiment of the present invention. It is sectional drawing in the AA of FIG. It is a modification of the junction structure shown in FIG. It is a typical perspective view of junction structure concerning a 2nd embodiment of the present invention. It is sectional drawing in the BB line of FIG. It is sectional drawing in the CC line of FIG. It is a modification of the junction structure shown in FIG.

  The joint structure according to the first and second embodiments according to the present invention will be described with reference to FIGS.

First Embodiment
FIG. 1 is a schematic perspective view of a bonding structure 1 according to a first embodiment of the present invention, FIG. 2 is a cross-sectional view taken along line AA of FIG. 1, and FIG. 3 is a bonding shown in FIG. 7 is a modified example of structure 1;

  As shown to Fig.1 (a), the joining structure 1 which concerns on this embodiment is the structure which joined the 1st to-be-joined member 10 and the 2nd to-be-joined member 20 by the fastener (joining member) 30. . Specifically, in a state in which the first bonding member 10 and the second bonding member 20 are superimposed, the flat first bonding member 10 is formed so as to partition the first space S1 and the second space S2. And the flat second member 20 to be joined are joined.

  In the present embodiment, in the first bonded member 10 and the second bonded member 20, the through holes 11 and 21 pass through in a state in which the first bonded member 10 and the second bonded member 20 are superimposed. It is formed. The first member to be joined 10 and the second member to be joined 20 are joined via a fastener (joining member) 30 inserted through the through holes 11 and 21.

  The first member to be joined 10 is formed of a first reinforcing layer 13 made of a fiber reinforced resin, a foam layer 14 made of a foamed resin, and a fiber reinforced resin in the thickness direction along the first space S1 to the second space S2. And the second reinforcing layer 15 are sequentially stacked. The first reinforcement layer 13 and the foam layer 14 are joined, the foam layer 14 and the second reinforcement layer 15 are joined, and the first reinforcement layer 13, the foam layer 14, and the second reinforcement layer 15 are , Is integrally formed. The second reinforcing layer 15 is superimposed on the second bonded member 20. Therefore, in the portion where the first bonded member 10 and the second bonded member 20 overlap, the first space S1 exists on the first bonded member 10 side, and the second space on the second bonded member 20 side. There is a space S2.

  Here, as described above, the first and second reinforcing layers 13 and 15 are made of a fiber reinforced resin, and the fiber reinforced resin is a material in which reinforcing fibers are impregnated with a synthetic resin. As the reinforcing fibers constituting the first and second reinforcing layers 13 and 15, inorganic fibers such as glass fibers, carbon fibers, silicon carbide fibers, alumina fibers, tyranno fibers, basalt fibers, ceramic fibers, etc .; stainless steel fibers, steel fibers, etc. Metal fibers; organic fibers such as aramid fibers, polyethylene fibers, and polyparaphenylene benzoxador (PBO) fibers; or boron fibers. The reinforcing fibers may be used alone or in combination of two or more. Among them, carbon fiber, glass fiber or aramid fiber is preferable, and carbon fiber is more preferable. These reinforcing fibers have excellent mechanical strength despite being lightweight.

  The reinforcing fibers constituting the first and second reinforcing layers 13 and 15 may be either long fibers or short fibers, but may be a reinforcing fiber base processed into a desired shape. As a reinforcing fiber base, a face material made of a textile base made of reinforcing fibers, a knitted base, a non-woven fabric, or a fiber bundle (strand) obtained by aligning reinforcing fibers in one direction with a thread (suture) Etc. In the present embodiment, the reinforcing fiber base of the first and second reinforcing layers 13 and 15 is a textile base in which long fibers are woven, and the weaving base of the textile base may be plain weave, twill weave, satin weave, etc. Can be mentioned. The fiber-reinforced substrate may be used without laminating only a single fiber-reinforced substrate, or a plurality of fiber-reinforced substrates may be laminated and used as a laminated fiber-reinforced substrate.

  A synthetic resin is a resin which is impregnated into reinforcing fibers to bond the reinforcing fibers together. Reinforcing fibers can be bound and integrated by the impregnated synthetic resin. The synthetic resin to be impregnated into the reinforcing fibers may be any resin of thermosetting resin or thermoplastic resin, and more preferably thermosetting resin.

  The thermosetting resin is not particularly limited. For example, epoxy resin, unsaturated polyester resin, phenol resin, melamine resin, polyurethane resin, silicone resin, maleimide resin, vinyl ester resin, cyan Examples thereof include acid ester resins, and resins obtained by prepolymerizing maleimide resins and cyanate ester resins. The thermosetting resin may be used alone or in combination of two or more. Among them, epoxy resins or vinyl ester resins are preferable. According to these synthetic resins, a fiber-reinforced resin excellent in elasticity can be formed, and the impact resistance of the obtained bonded structure 1 can be improved. The thermosetting resin may contain additives such as a curing agent and a curing accelerator. The fiber reinforced resin may be molded by a sheet molding compound (SMC).

  20-80 weight% is preferable and, as for content of the thermosetting resin in fiber reinforced resin, 30-70 weight% is more preferable. If the content of the thermosetting resin is too small, the binding properties of the reinforcing fibers become insufficient, and the mechanical strength of the first member to be joined 10 and the impact resistance of the joining structure 1 can not be sufficiently improved. There is a fear. If the content of the thermosetting resin is too large, the mechanical strength of the first member to be joined 10 may be reduced, and the impact resistance of the joint structure 1 may not be sufficiently improved.

  The foam layer 14 contains a foamed synthetic resin (foamed resin) as a material. Specific examples of the synthetic resin used for the foam layer 14 include polycarbonate resins, acrylic resins, thermoplastic polyester resins, polymethacrylimide resins, polystyrene resins, polyamide resins, and polypropylene resins. Be The synthetic resin may be used alone or in combination of two or more. Among them, thermoplastic polyester resins or polyamide resins are preferable because the foam layer 14 and the first and second reinforcing layers 13 and 15 can be integrated more firmly, and thermoplastic polyester resins are more preferable. preferable.

  In addition, it is preferable that the foaming ratio of the foamed resin of the foamed layer 14 is 2 to 20 times. Further, the foamed resin may have any structure of an open cell structure or a closed cell structure as long as the foam layer 14 can absorb water and absorb moisture, but if it is an open cell structure, the foamed resin Water absorption and moisture absorption by the

  The synthetic resin of the foam layer 14 preferably has a polar group such as a cyano group, a hydroxy group (hydroxyl group), a carbonyl group, an amino group, an epoxy group, a halogen atom, an oxo group, or a phenyl group. By using a synthetic resin having a polar group, the foam layer 14 and the first and second reinforcing layers 13 and 15 can be firmly integrated.

  In the present embodiment, the second bonded member 20 may be a metal material such as iron or aluminum, but in the present embodiment, it is made of a fiber reinforced resin, and as the fiber reinforced resin, the first reinforcing layer 13 may be used. And materials exemplified for the second reinforcing layer 15 can be mentioned.

  The fastener (joining member) 30 may be a resin material or a metal material, and in the present embodiment, the fastener is made of a metal material, and examples of the metal material include stainless steel, aluminum alloy and the like. . The fastener 30 includes an externally threaded member 31 such as a bolt or a screw on which an externally threaded member is formed, and a female screw such as a nut formed on the distal end of the externally threaded member 31. It consists of a member 32. In addition, although the fastener 30 is comprised with the external thread member 31 and the internal thread member 32 in this embodiment, the rivet as shown in 2nd Embodiment may be sufficient as the fastener 30. FIG.

  When joining the first member to be joined 10 and the second member to be joined 20, the male screw member 31 is formed in the through hole 11 of the first member to be joined 10 and the second member to be joined 20 from the first space S1 side. , 21 and has its tip end projected to the second space S2 side, and a female screw member 32 is screwed to the tip end which has been projected, and this is tightened.

  Further, in the present embodiment, as necessary, the overlapping portion of the first bonding member 10 and the second bonding member 20 may be bonded via an adhesive. In this case, the second reinforcing layer 15 of the first bonded member 10 and the second bonded member 20 are bonded by an adhesive. Thereby, the joining state of the 1st to-be-joined member 10 and the 2nd to-be-joined member 20 can be made stronger. As such an adhesive, for example, an acrylic adhesive (for example, a trade name "Precuss" manufactured by ITW, etc.) may be used, and an epoxy adhesive (for example, an epoxy resin adhesive manufactured by Konishi) Agent, or trade name "Araldite" manufactured by Huntsman Japan Ltd., etc.) may be used.

According to the present embodiment, in a state where the first bonding member 10 and the second bonding member 20 are superimposed, bonding is performed via the fastener 30 inserted through the through holes 11 and 21. The first space S <b> 1 and the second space S <b> 2 can be partitioned by the first joined member 10 and the second joined member 20.
Here, the first space S1 may be a space where outside air exists, and the second space S2 may be a sealed space isolated from the outside air.

  Here, when the first space S1 is humid compared to the second space S2, etc., the through holes 11 and 21 formed in the first and second members to be joined 10 and 20 and the fastener 30 (specifically, In fact, moisture, moisture or the like easily flows from the first space S1 to the second space S2 via the male screw member 31).

  However, in the present embodiment, since the foam layer 14 made of a foam resin is formed on the first member to be joined 10, moisture, moisture, etc. flowing into the through holes 11 and 21 can be treated with the foam resin of the foam layer 14. It can absorb or absorb water. This reduces the flow of water, moisture, etc. from the first space S1 to the second space S2 through the through holes in the two spaces partitioned by the first and second members to be joined 10, 20. can do.

  Here, when the reinforcing fiber of the second reinforcing layer 15 is a carbon fiber and the fastener 30 (specifically, the male screw member 31) is made of a metal material, the moisture or When moisture flows in, galvanic corrosion is likely to occur on the surface of the fastener 30 that is in contact with the carbon fiber due to the moisture or humidity.

  However, in the present embodiment, since water is absorbed or absorbed by the foam layer 14 described above, galvanic corrosion in the vicinity of the second reinforcing layer 15 can be suppressed. Furthermore, when the 2nd to-be-joined member 20 consists of fiber reinforced resin which made the carbon fiber the reinforcement fiber, the galvanic corrosion in the part of the external thread member 31 which contacts the carbon fiber of the 2nd to-be-joined member 20 is also suppressed. be able to.

  Furthermore, when the overlapping portion of the first bonding member 10 and the second bonding member 20 is bonded via an adhesive, it flows from the first space S1 through the through holes 11 and 21. Moisture or moisture can be absorbed or absorbed by the foam layer 14 before reaching the adhesive. This can suppress deterioration of the adhesive due to moisture or humidity.

  In the bonding structure 1 shown in FIG. 2, although the second bonded member 20 does not include the foam layer, for example, as in the modification shown in FIG. 3, the second bonded member 20 is the first reinforcing layer 23, The foam layer 24 and the second reinforcing layer 25 may be sequentially stacked. The first and second reinforcing layers 23 and 25 are made of the same material as the materials exemplified for the first and second reinforcing layers 13 and 15 of the first bonded member 10, and the foam layer 24 is a first bonded member It consists of the same material as the material shown by 10 foam layers 14.

  According to the modification shown in FIG. 3, since the foam layers 14 and 24 of the first and second members to be joined 10 and 20 exist between the first space S1 and the second space S2, these The foam layers 14 and 24 can thermally insulate the first space S1 and the second space S2. As a result, dew condensation on the surfaces of the first bonded member 10 and the second bonded member 20 can be prevented.

  Furthermore, by including the foam layer 24 in the second member to be joined 20, the first member to be joined 10 of the water or moisture traveling from the first space S1 to the second space S2 through the through holes 11 and 21. The foam layer 24 can absorb or absorb a portion of the foam layer 14 that can not absorb or absorb water. Water or moisture moving from the second space S2 to the first space S1 can be absorbed or absorbed by the foam layer 24 before it is absorbed or absorbed by the foam layer 14.

Second Embodiment
FIG. 4 is a schematic perspective view of a bonding structure 1 according to a second embodiment of the present invention, FIG. 5 is a cross-sectional view taken along the line B-B in FIG. 4, and FIG. It is a sectional view in the C line. FIG. 7 shows a modification of the joint structure 1 shown in FIG.

  In the first embodiment, the first and second members to be joined 10, 20 have a flat plate shape, but in the present embodiment, the first and second members to be joined 10, 20 have first and second cylindrical shapes. The point which has the parts 10a and 20a is different. In addition, the other structure attaches | subjects the same code | symbol and abbreviate | omits the detailed description.

  4-7, only the 1st and 2nd cylindrical part 10a, 20a is illustrated among the 1st and 2nd to-be-joined members 10 and 20, and the other part is the 1st and 2nd The structure and the shape are not particularly limited as long as they are connected to the two cylindrical portions 10a and 20a. In addition, the first and second members to be joined 10, 20 may be configured only by the first and second cylindrical portions 10a, 20a.

  In the present embodiment, as described above, the first member to be joined 10 has the first cylindrical portion 10a, and the second member to be joined 20 overlaps the first cylindrical portion 10a so that the first cylinder is overlapped. It has the 2nd cylindrical part 20a inserted in the inside of the shape part 10a.

  One second space S2 is formed in the overlapping portion of the first and second cylindrical portions 10a and 20a so as to connect the internal space of the first cylindrical portion 10a and the second cylindrical portion 20a. It is done. In the present embodiment, the external space between the first member to be joined 10 and the second member to be joined 20 is the first space S1.

  The first tubular portion 10a has the first reinforcing layer 13, the foam layer 14, and the second reinforcing layer similar to the first embodiment shown in FIG. 2 in the thickness direction from the first space S1 to the second space S2. Fifteen are stacked in order. The 1st reinforcement layer 13, the foaming layer 14, and the 2nd reinforcement layer 15 are cylindrical, and are formed in the circumferential direction of the 1st cylindrical part 10a. The second cylindrical portion 20a is made of a metal material, a resin material, or the like, as in the first embodiment shown in FIG. Therefore, the description of these materials is omitted.

  In addition, the 1st to-be-joined member 10 can be manufactured by the method similar to the method mentioned above. Specifically, a metal liner or the like corresponding to the hollow portion of the first cylindrical portion 10a is prepared, and a prepreg corresponding to the second reinforcing layer 15 is wound around the liner, and a foaming agent is further formed thereon. A sheet material corresponding to the dispersed unfoamed or prefoamed foam layer 14 is wound, and further, a prepreg corresponding to the first reinforcing layer 13 is wound thereon to produce a shaped body. This is placed in a desired mold, if necessary, and hot-pressed to form a first object including the first and second reinforcing layers 13 and 15 obtained by curing the thermosetting resin contained in the prepreg. The bonding member 10 can be formed. The foam layer 14 and the first and second reinforcing layers 13 and 15 are bonded together at their interface by fusion or the like. When the fiber reinforced resin is a thermoplastic resin, the first and second reinforcing layers 13 and 15 are heated to a temperature equal to or higher than the glass transition point to form the first member 10 to be joined. After the first bonded member 10 is formed, the through hole 11 is bored in the first bonded member 10.

  In the present embodiment, in a state where the second cylindrical portion 20a is inserted in the first cylindrical portion 10a, the through holes 11 and 21 are formed at four places in the circumferential direction of the first cylindrical portion 10a and the first cylindrical portion 10a. It is formed to penetrate the two cylindrical portions 20a. Furthermore, in the present embodiment, the first tubular portion 10a and the second tubular portion 20a are joined in a state where the joining member 30 made of a rivet is inserted into the through holes 11 and 21.

  In the present embodiment, the joining member 30 is inserted into the through holes 11 and 21 and cut at the time of joining with the tubular body 33 joining the first tubular portion 10a and the second tubular portion 20a by rivets. It is comprised with the sealing body 34 which remains in the tubular body 33 and seals the inside of the tubular body 33. Further, in the present embodiment, the first tubular portion 10a and the second tubular portion 20a may be bonded by the above-described adhesive at a portion where they overlap each other, as needed.

  Here, as in the first embodiment, when the first space S1 is humid compared to the second space S2, the through holes 11 formed in the first and second cylindrical portions 10a and 20a, etc. , 21 easily flow from the first space S1 to the second space S2, which is an internal space. However, in the present embodiment, since the foam layer 14 made of a foam resin is formed in the first cylindrical portion 10 a of the first member to be joined 10, moisture, moisture, etc. flowing into the through holes 11 and 21 are The foam resin of the foam layer 14 can absorb water or absorb moisture. Thereby, it is possible to reduce the inflow of moisture, moisture or the like into the second space S2 which is the internal space via the through holes 11 and 21.

  In particular, in the case where the second space S2 is a sealed space, the water or moisture that has flowed from the first space S1 into the second space S2 through the through holes 11 and 21 is likely to be collected, as described above Such a phenomenon can be avoided by the foam layer 14 of the first bonded member 10. Furthermore, since corrosion of the bonding member 30 on the side facing the second space S2 can be suppressed, the work of confirming the corrosion state of the bonding member 30 is reduced even if the space is a space where the second space S2 is sealed. can do.

  When the first and second members to be joined 10 and 20 contain carbon fibers and the joining member 30 is a metal member, galvanic corrosion of the joining member 30 caused by water or moisture is reduced as in the first embodiment. can do. When the first cylindrical portion 10a and the second cylindrical portion 20a overlap each other and are bonded by an adhesive, it is possible to suppress the deterioration of the adhesive caused by water or moisture.

  In the bonding structure 1 shown in FIGS. 4 to 6, the second bonded member 20 does not include the foam layer, but as in the modification shown in FIG. 7, for example, the second bonded member 20 has its thickness direction Alternatively, the first reinforcing layer 23, the foam layer 24, and the second reinforcing layer 25 may be stacked. The first reinforcing layer 23, the foam layer 24, and the second reinforcing layer 25 are cylindrical, and are formed in the circumferential direction of the second cylindrical portion 20a. The first and second reinforcing layers 23 and 25 are made of the same material as the materials exemplified for the first and second reinforcing layers 13 and 15 of the first bonded member 10, and the foam layer 24 is a first bonded member It consists of the same material as the material shown by 10 foam layers 14.

  According to the modification shown in FIG. 7, since the foam layers 14 and 24 of the first and second members to be joined 10 and 20 are present between the first space S1 and the second space S2, these The foam layers 14 and 24 can thermally insulate the first space S1 and the second space S2. As a result, condensation on the surface of the first bonded member 10 in contact with the outside air can be prevented, so that the movement of water from the first space S1 to the second space S2 can be reduced.

  Furthermore, by including the foam layer 24 in the second member to be joined 20, the first member to be joined 10 of the water or moisture traveling from the first space S1 to the second space S2 through the through holes 11 and 21. The foam layer 24 can absorb or absorb a portion of the foam layer 14 that can not absorb or absorb water.

  As mentioned above, although some embodiments of the present invention were explained in full detail, the present invention is not limited to the above-mentioned embodiment, and it is various within the range which does not deviate from the spirit of the present invention indicated to the claim. Design changes can be made.

1: junction structure, 10: first member to be joined, 10a: first tubular portion, 11: through hole, 13: first reinforcing layer, 14: foam layer, 15: second reinforcing layer, 20: second substrate Bonding member, 20a: second cylindrical portion, 21: through hole, 23: first reinforcing layer, 24: foam layer, 25: second reinforcing layer, 30: bonding member, S1: first space, S2: second space

Claims (6)

A junction structure in which the first and second members to be joined are joined so as to partition the first space and the second space in a state in which the first and second members are joined. And
A through hole is formed in the first and second members to be joined in a state in which the first and second members to be joined are superimposed on each other.
The first member to be joined and the second member to be joined are joined via a joining member inserted into the through hole,
The first member to be joined includes a first reinforcing layer made of a fiber reinforced resin, a foam layer made of a foamed resin, and a fiber reinforced resin in the thickness direction along the second space from the first space. 2. A bonding structure in which the second and third reinforcing layers are stacked in order, and the second reinforcing layer is superimposed on the second bonding member.   The joint structure according to claim 1, wherein a reinforcing fiber constituting the fiber reinforced resin of the second reinforcing layer is a carbon fiber, and the joint member is made of a metal material.   The second bonded member includes a first reinforcing layer made of a fiber reinforced resin, a foam layer made of a foamed resin, and a fiber reinforced resin in a thickness direction along the second space from the first space. The junction structure according to claim 2, wherein two reinforcing layers are laminated.   The joint structure according to claim 1 or 2, wherein a portion where the first bonding member and the second bonding member overlap is bonded via an adhesive. The first member to be joined has a first tubular portion, and the second member to be joined is inserted into the first tubular portion so as to overlap with the first tubular portion. It has a cylindrical part, The said 2nd space is formed in the internal space of the said, 1st and said 2nd cylindrical part, The external space of the said 1st to-be-joined member and the said 2nd to-be-joined member is the said It is the first space,
In a state in which the second cylindrical portion is inserted into the first cylindrical portion, the through hole is formed to penetrate the first cylindrical portion and the second cylindrical portion.
The said 1st cylindrical part and the said 2nd cylindrical part are joined in the state by which the said joining member was penetrated by the said through hole, The any one of the Claims 1-4 characterized by the above-mentioned. Bonding structure described.   The junction structure according to any one of claims 1 to 5, wherein the second space is a sealed space.

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