JP5320871B2 - Method for constructing joint structure and joint structure - Google Patents

Description

  The present invention relates to a method for constructing a joint structure in which sheet metal members constituting a vehicle body are joined, and a joint structure.

  Conventionally, a welding technique such as spot welding or laser welding or a bonding method using an adhesive has been adopted as a means for joining sheet metal members constituting a vehicle body.

In particular, in recent years, as disclosed in Patent Document 1, it is an adhesive that hardens while self-generating internal energy by energy applied to a part from the outside, and is adjacent to the site where the internal energy is generated. An adhesion method using a chain-reaction type adhesive in which a portion that receives the internal energy receives the internal energy and further undergoes a curing reaction while self-generating the internal energy is attracting attention. In this method using an adhesive, the adhesive is applied to the adhesive member, and the adhesive is sequentially cured by applying energy to a predetermined portion of the adhesive. Then, the adhesive members are joined together by curing the adhesive.
JP-A-11-193322

  In the method using the chain reaction type adhesive, energy is appropriately transmitted in the adhesive, and the energy needs to be heated to a predetermined temperature at which the adhesive can be sequentially cured. However, depending on the type of the adhesive member, energy transfer in the adhesive is not properly performed because the adhesive member takes away the heat applied to the adhesive or the heat of the curing reaction, and the curing reaction of the adhesive is not performed. There are times when it stops in the middle. Further, the curing of the adhesive becomes non-uniform, and there is a possibility that sufficient bonding strength cannot be obtained.

  This invention is made | formed in view of the above situations, and provides the construction method and joining structure of a joining structure which can maintain the chain | strand of the hardening reaction of an adhesive agent and can ensure joining strength.

The present invention for solving the above problem is, the joint structure and at least one smaller second adhesive member in thermal conductivity or heat capacity than the first adhesive member and the first adhesive member is bonded respectively to the bonded component A method for constructing a joining structure to be constructed, wherein a heat insulating part forming step for forming a first heat insulating part for restricting inflow of heat from the outside to the first adhesive member on a surface of the first adhesive member; It is carried out after the part forming step and cures while generating the curing reaction heat by the energy applied to a part from the outside, and the part adjacent to the site where the curing reaction heat is generated receives this curing reaction heat. Further, a chain reaction type adhesive that cures in a chain by causing a curing reaction while generating a curing reaction heat is disposed so that the first heat insulating portion is interposed between the adhesive and the first adhesive member. , The adhesive is disposed on the surface of the first heat insulating portion and the adhesive is disposed on the surface of the second adhesive member, and the adhesive is disposed after the adhesive disposing step to give energy to the adhesive. And a curing step of curing the adhesive while restricting heat transfer from the adhesive to the first adhesive member by the first heat insulating portion , and the adhesive placement step includes the step of And interposing the adhesive between the first adhesive member and the adherend member, and interposing the adhesive between the second adhesive member and the adherend member, and the curing step includes the adhesive. There is provided a method for constructing a joining structure, comprising: a step of joining the first adhesive member and the adherend member by curing and joining the second adhesive member and the adherend member (claim). Item 1).

According to this method, the first heat insulating portion that restricts the inflow of heat from the outside, that is, the adhesive, to the first adhesive member is formed between the first adhesive member and the adhesive. The heat release to the first adhesive member side of the internal energy generated in the adhesive, that is, the curing reaction heat, can be suppressed by the heat insulating portion. And, as a result of the suppression of heat dissipation, the transfer of the curing reaction heat between the adjacent adhesives, and thus the chain of the curing reaction is maintained, the adhesive can be cured more reliably, and the first adhesive member and the second adhesive The bonding strength between the member and the member to be bonded can be ensured.
In particular, in the adhesive placement step, the adhesive is interposed between the first adhesive member and the adherend member, and the adhesive is interposed between the second adhesive member and the adherend member. And the curing step includes a step of bonding the first adhesive member and the adherend member by curing the adhesive and joining the second adhesive member and the adherend member. The chain of curing reaction along the bonded member of the adhesive can be maintained, the bonding strength between the first bonding member and the bonded member, and the bonding strength between the second bonding member and the bonded member Can be secured.

  In particular, in this method, since the first heat insulating portion is formed on the first adhesive member having a thermal conductivity or heat capacity larger than that of the second adhesive member, the effect of maintaining the chain of the curing reaction is enhanced. That is, in the vicinity of an adhesive member having a larger thermal conductivity or heat capacity, the amount of heat released from the adhesive to the outside is larger, and the heat applied to the adhesive or the heat of curing reaction is an adhesive member having a larger heat conductivity or heat capacity. In this method, the first heat insulating part is formed in the first adhesive member, and the heat conductivity or the heat capacity is larger on the side of the first adhesive member. Since heat dissipation is suppressed, it is possible to suppress the chain of the curing reaction of the adhesive and uneven curing of the adhesive.

  In the present method, the heat insulating portion forming step includes forming a second heat insulating portion that restricts the flow of heat from the adhesive to the second adhesive member on the surface of the second adhesive member; The amount of the first heat insulating portion that restricts the inflow of heat to the first adhesive member by the first heat insulating portion is greater than the amount that restricts the inflow of heat to the second adhesive member by the second heat insulating portion. It is preferable to include the process of forming so that it may become (Claim 2).

  In this case, in addition to the first heat insulating portion, a second heat insulating portion that restricts heat radiation from the adhesive is also formed between the second adhesive member and the adhesive. The heat insulating part and the second heat insulating part can more reliably regulate the heat radiation from the adhesive, and can cure the adhesive more reliably.

  In addition, the first heat-insulating part having a larger heat insulation degree is formed in the first adhesive member having a larger thermal conductivity or heat capacity, and a large amount of heat is taken away from the adhesive on the side of the adhesive member having a larger heat conductivity or heat capacity. Therefore, the chain of curing reaction of the adhesive can be stopped and uneven curing of the adhesive can be prevented more reliably.

  Here, as a specific method for making the heat insulation degree of the first heat insulation part larger than the heat insulation degree of the second heat insulation part in the heat insulation part forming step, the first heat insulation part is formed from the adhesive. The method of forming so that the thickness of the direction which goes to a 1st adhesive member may become thicker than the thickness of the direction which goes to the said 2nd adhesive member from the said adhesive agent of the said 2nd heat insulation part is mentioned.

  According to this method, the heat insulation degree of the first heat insulating part can be easily made larger than the heat insulating degree of the second heat insulating part, for example, by changing the thickness of the heat insulating part made of the same member.

  In addition, as a specific method for making the heat insulation degree of the first heat insulation part larger than the heat insulation degree of the second heat insulation part in the heat insulation part forming step, the thermal conductivity of the first heat insulation part is The method of forming so that it may become smaller than the heat conductivity of a 2nd heat insulation part is mentioned (Claim 4).

  According to this method, the heat insulation degree of the first heat insulating part can be easily made larger than the heat insulating degree of the second heat insulating part by changing the material of the first heat insulating part and the second heat insulating part.

Here, it is preferable that the method includes a tailored blank step in which the first adhesive member and the second adhesive member are joined to each other by a tailored blank method, which is performed before the heat insulating portion forming step. 5 ).

  If it does in this way, the 1st adhesion member and the 2nd adhesion member can be joined more reliably by welding.

Further, the present invention is a bonding structure in which the first adhesive member and the second adhesive member are respectively bonded to the adherend member, and the first adhesive member and the second adhesive member are attached to the adherend member. The first adhesive member and the adherend member and the second adhesive member and the adherend member are respectively disposed between the first adhesive member and the adherend member and applied to a part from the outside. Curing while generating the curing reaction heat by the energy generated, and the part adjacent to the site where the curing reaction heat is generated receives this curing reaction heat and causes the curing reaction while generating the curing reaction heat. And an adhesive that joins the first adhesive member and the second adhesive member to the adherend, respectively , and the first adhesive member has at least one of its thermal conductivity or heat capacity as the second adhesive. Bonding part A first heat insulating portion that restricts the inflow of heat from the adhesive to the first adhesive member is provided between the first adhesive member and the adhesive. A joining structure characterized by the above is provided (claim 6 ).

  In this structure, since the outflow of heat from the adhesive to the first adhesive member, that is, the outside is restricted by the first heat insulating portion, internal energy, that is, curing reaction heat can be more reliably transmitted between the adjacent adhesives. The bonding strength of the first adhesive member and the second adhesive member can be ensured by maintaining the chain of curing reaction of the adhesive.

In particular, since the first heat insulating portion is provided in the first adhesive member having a thermal conductivity or heat capacity larger than that of the second adhesive member, it is possible to prevent a large amount of heat from being removed from the adhesive to the first adhesive member side, It is possible to more reliably prevent the chain of the curing reaction of the adhesive from being stopped and uneven curing.
Further, the first adhesive member and the second adhesive member are spaced apart from each other in the same direction with respect to the adherend member, and the adhesive is interposed between the adherend member and the first adhesive member. The first adhesive member and the adherend member are joined to each other by interposing, and the second adhesive member and the adherend member are joined to each other by being interposed between the adherend member and the second adhesive member. Therefore, the curing reaction of the adhesive along the adherend member can be maintained, and the bonding strength between the first adhesive member and the adherend member and between the second adhesive member and the adherend member can be maintained. Bonding strength can be ensured.

Further, according to the present invention, a second heat insulating part that restricts an inflow of heat from the adhesive to the second adhesive member is provided between the second adhesive member and the adhesive. the amount to regulate the flow of heat to the first adhesive member of the heat insulating portion is preferably greater than the amount to regulate the flow of heat to the second heat insulating member of the second adhesive member (claim 7) .

  In this structure, heat radiation from the adhesive can be more reliably regulated by the second heat insulating part in addition to the first heat insulating part, and the adhesive is more reliably maintained by maintaining the chain of the curing reaction of the adhesive. Can be cured.

  In addition, the first heat-insulating part having a larger heat insulation degree is formed in the first adhesive member having a larger thermal conductivity or heat capacity, and a large amount of heat is taken away from the adhesive on the side of the adhesive member having a larger heat conductivity or heat capacity. Therefore, the chain of curing reaction of the adhesive can be stopped and uneven curing of the adhesive can be prevented more reliably.

As a specific structure of each of the heat insulating portions, the thickness of the first heat insulating portion in the direction from the adhesive toward the first adhesive member main body is from the adhesive of the second heat insulating portion to the second adhesive member main body. It includes those thicker than in the direction of thickness towards the (claim 8). Moreover, the thing whose heat conductivity of a said 1st heat insulation part is smaller than the heat conductivity of a said 2nd heat insulation part is mentioned (Claim 9 ).

Here, the present invention includes one in which the first adhesive member and the second adhesive member are joined to each other by a tailored blank method (claim 10 ).

  As described above, according to the present invention, the chain of the curing reaction of the adhesive is maintained, and the bonding strength between the bonding members or between the first bonding member and the second bonding member and the bonded member is ensured. be able to.

  Hereinafter, a preferred embodiment of a method for constructing a joint structure according to the present invention will be described with reference to the drawings. Here, the case where the joining structure 100 is constructed near the center pillar (so-called B pillar) of the automobile will be described. The center pillar includes a side frame outer panel (bonded member) 10 and a center pillar inner panel 20.

  1 is a schematic plan view of the center pillar inner panel 20, FIG. 2 is a sectional view taken along the line II-II of FIG. 1, and FIG. 3 is a sectional view taken along the line III-III of FIG. The center pillar inner panel 20 includes a first panel 30 (first adhesive member) disposed at the lower part of the vehicle body and a second panel 40 (second adhesive member) disposed at the upper part of the vehicle body. As shown in FIG. 3, the first panel 30 and the second panel 40 have different thicknesses. For example, the thickness t1 of the first panel 30 is 1.6 mm. The thickness t2 is 0.8 mm. As will be described later, the center pillar inner panel 20 is pressed after the steel plate constituting the first panel 30 and the steel plate constituting the second panel 40 are integrally joined by laser welding or the like by a tailored blank method. It is formed by processing. Here, with the difference in thickness, the first panel 30 has a larger heat capacity than the heat capacity of the second panel 40.

  In the present embodiment, as shown in FIG. 3, the first panel 30 and the second panel 40 are joined in a state in which the second panel 40 protrudes further to the outside of the vehicle body than the first panel 30. In addition, a flange 34 (hereinafter referred to as a first inner flange 34) is formed on the first panel 30 by the press working, and a flange 44 (hereinafter referred to as a first inner flange 34) is formed on the second panel 40. 2nd inner flange 44) is formed.

  As shown in FIG. 2, the second inner flange 44 of the second panel 40 is formed with a through hole 46 that penetrates the vehicle body outer surface 44a and the vehicle body inner surface 44b.

  4 is a schematic plan view of the side frame outer panel 10, and FIG. 5 is a cross-sectional view taken along the line VV of FIG. The side frame outer panel 10 is formed with a front opening 11 to which a front door is attached and a rear opening 12 to which a rear door is attached. A flange 14 (hereinafter referred to as an outer flange 14) is formed around the front opening 11 and the rear opening 12 as shown in FIG.

  As shown in FIG. 11 and the like, the side frame outer panel 10 and the center pillar inner panel 20 are center pillar inner panels in a region of the side frame outer panel 10 between the front opening 11 and the rear opening 12. 20 is attached, and the outer flange 14 and the first inner flange 34 and the second inner flange 44 of the center pillar inner panel 20 are bonded to each other by being bonded with an adhesive 4. Specifically, as shown in FIG. 10 and the like, a vehicle body inner surface 14a of the outer flange 14, a vehicle body outer surface 34a of the first inner flange 34, and a vehicle outer surface 44a of the second inner flange 44 are described later. The adhesive 4 is bonded through the heat insulating portion 38 and the second heat insulating portion 48. Then, by this adhesion, the first inner flange 34 and the second inner flange 44 are joined via the side frame outer panel 10 and the adhesive 4.

In the method for constructing the bonded structure, a chain reaction type adhesive is used as the adhesive 4. Specifically, the adhesive 4 includes a photopolymerizable resin (mainly an epoxy resin, particularly preferably an alicyclic epoxy resin), a photo / thermal polymerization initiator (such as an aromatic sulfonium salt), and a photopolymerization initiator ( A resin composition mainly composed of a sulfonium salt, etc., which includes ultraviolet rays, electron beams, X-rays, infrared rays, solar rays, visible rays, laser beams (excimer laser, CO ₂ , lasers, etc.), heat rays (radiation and radiant heat) Etc.), or a predetermined amount of energy such as heat is applied, so that cations and heat of curing reaction are positively generated in the interior, and the cations and heat of curing reaction are linked in a chain. Use a curing reaction.

  Further, an apparatus as shown in FIG. 7 is used as the adhesive application device 110 for applying the adhesive 4. The adhesive application device 110 includes a nozzle 112 that discharges the adhesive 4 stored in a tank (not shown), a hose 114 that guides the adhesive 4 to the nozzle 112, and a drive robot 115 that drives the nozzle 112. And have.

  The construction method of the present joint structure using the adhesive 4 or the like includes the following steps.

1) Tailored Blank Step This step is a step of forming the center pillar inner panel 20 having the first panel 30 and the second panel 40 as described above.

  In this step, first, the first steel plate constituting the first panel 30 and the second steel plate constituting the second panel 40 having a thickness smaller than that of the steel plate are welded by laser or the like. Then, the steel plate that has become one material by welding is pressed to form the first panel 30 having the first inner flange 34 by the first steel plate, and the second flange 44 by the second steel plate. The 2nd panel 40 which has is formed. In this way, in this step, the center pillar inner panel 20 in which the first panel 30 and the second panel 40 are integrally welded is formed.

2) Heat insulation portion forming step As described above, in this method, the vehicle body inner surface 14a of the outer flange 14 is joined to the vehicle outer surface 34a of the first inner flange 34 and the vehicle outer surface 44a of the second inner flange 44. In addition, the chain reaction type adhesive 4 is used, and in order to ensure the bonding strength between these surfaces, the curing reaction heat of the adhesive 4 is reliably transmitted in the adhesive 4 so that the adhesive 4 is used. It must be hardened reliably.

  Therefore, in this method, in the heat insulating portion forming step, the adhesive 4 is applied to the surfaces 34a and 44a on the vehicle body outer surface 34a of the first inner flange 34 and the vehicle body outer surface 44a of the second inner flange 44, respectively. The first heat insulating portion 38 and the second heat insulating portion 48 that restrict the inflow of heat are formed so that the heat of curing reaction of the adhesive 4 does not escape to the surfaces 34a and 44a.

  In addition, as described above, the first inner flange 34 has a larger heat capacity than the second inner flange 44, and when the same energy is received, the temperature increase rate of the first inner flange 34 is the same as that of the second inner flange 44. It is comprised so that it may become smaller than a temperature rise rate. Therefore, when the first inner flange 34, the second inner flange 44 and the adhesive 4 are simply brought into contact with each other, the first inner flange 34 and the second inner flange 44 receive the curing reaction heat of the adhesive 4. Is heated, the temperature difference between the adhesive 4 and the first inner flange 34 becomes larger than the temperature difference between the adhesive 4 and the second inner flange 44 side. As a result of the temperature difference, the amount of heat released from the adhesive 4 becomes particularly large on the first inner flange 34 side, and the curing reaction heat of the adhesive 4 is deprived to the first inner flange 34 side. If the curing reaction heat is not properly transmitted, the curing of the adhesive 4 becomes uneven or the curing of the adhesive 4 stops halfway.

  Therefore, in this method, the heat insulation degree of the first heat insulating portion 38 (amount that regulates the movement of heat) is set larger than the heat insulating degree of the second heat insulating portion 48. Then, the amount of heat released from the adhesive 4 in the first inner flange 34 and the second inner flange 44 is made uniform, and appropriate transfer of the curing reaction heat in the adhesive 4 is maintained.

  Specifically, first, as shown in FIG. 6, the liquid heat insulating agent 104 that is cured by receiving ultraviolet rays is applied to the vehicle body outer surface 34 a of the first inner flange 34 and the vehicle body outer surface 44 a of the second inner flange 44. Apply to. At this time, coating is performed so that the surface of the heat insulating agent 104 in the vehicle body outer side direction is substantially horizontal across the first inner flange 34 and the second inner flange 44. In more detail, the drive robot 115 is driven using the adhesive application device 110, and the heat insulating agent 104 is discharged from the nozzle 112 onto the surfaces 34a and 44a. Next, the heat insulating agent 104 is cured by irradiating the heat insulating agent 104 with ultraviolet rays.

  Here, the adhesive 4 is a resin composition as described above, and its heat transfer coefficient is sufficiently smaller than that of the first inner flange 34 and the second inner flange 44 made of a steel plate. Heat dissipation to each inner flange 34, 44 can be sufficiently restricted. Therefore, in the present embodiment, the same heat insulating agent 104 as the adhesive 4 is used.

  As described above, the second panel 30 protrudes outward of the vehicle body from the first panel 40. Accordingly, as described above, the heat insulating agent 104 is applied substantially horizontally across the first inner flange 34 and the second inner flange 44, so that the vehicle body outer surface 44a of the second inner flange 44 has a thickness ( A second heat insulating portion 48 having a relatively small d2) in FIG. 6 is formed, and the outer surface 34a of the first inner flange 34 is thicker than the second heat insulating portion 48 (d1 in FIG. 6). 1 heat insulation part 38 is formed. Due to the difference in thickness, the heat insulation degree of the first heat insulation part 38 is larger than the heat insulation degree of the second heat insulation part 48.

3) Adhesive placement step This step is a step of placing the adhesive 4 between the first heat insulation portion 38, the second heat insulation portion 48, and the outer flange 14.

  In this step, first, as shown in FIG. 8, the adhesive 4 is applied to the vehicle body inner surface 14 a of the outer flange 14. Specifically, the drive robot 115 of the adhesive application device 110 is driven to discharge the adhesive 4 from the nozzle 112 onto the vehicle body inner surface 14 a of the outer flange 14.

  Next, as shown in FIG. 9, the center pillar inner panel 20 in which the first heat insulating portion 38 and the second heat insulating portion 48 are formed is connected to the first heat insulating portion 38, the second heat insulating portion 48, and the outer flange. 14 is placed on the side frame outer panel 10 so as to sandwich the adhesive 4 with the vehicle body inner surface 14a.

4) Curing step This step is a step of curing the adhesive 4.

  In this step, as shown in FIG. 10, the adhesive 4 is irradiated with ultraviolet rays by a UV irradiation device 130 which is a well-known device capable of irradiating ultraviolet rays. Specifically, the ultraviolet light is applied to the inside of a through hole 46 formed in the second inner flange 44, and the adhesive 4 exposed in the through hole 46 is irradiated with the ultraviolet light. The adhesive 4 irradiated with ultraviolet rays starts curing while generating cations and heat of curing reaction therein. The curing reaction of the adhesive 4 generated in the vicinity of the through hole 46 proceeds between the second inner flange 44 and the outer flange 14 on the lower side of the vehicle body, and then the first inner flange 34 and the outer flange 14. And proceed with.

  Here, as described above, the second heat insulating portion 48 is formed on the second inner flange 44, and the first heat insulating portion 38 is formed on the first inner flange 34. The 1 heat insulation part 38 and the 2nd heat insulation part 48 are suppressing the thermal radiation from the said adhesive agent 4 to the 2nd inner flange 44 and the 1st inner flange 34 side. Therefore, the curing reaction heat of the adhesive 4 propagates through the adhesive 4 efficiently. And the adhesive agent 4 hardens | cures one by one reliably by receiving sufficient hardening reaction heat. In addition, the first heat insulating portion 38 having a larger heat insulation degree is formed on the first inner flange 34 side having a larger heat capacity, and the curing reaction heat is biased toward the first inner flange 34 side. The movement is suppressed. Therefore, the curing reaction of the adhesive 4 is more appropriately transmitted, and the adhesive 4 is uniformly cured across the first inner flange 34 and the second inner flange 44.

  In this way, in this step, the adhesive 4 is cured to join the outer flange 14 and the first inner flange 34 with the first heat insulating portion 38 interposed therebetween, and the outer flange 14. And the second inner flange 44 are joined together with the second heat insulating portion 48 interposed therebetween.

  As described above, in the construction method of the present bonded structure, the chain of the curing reaction of the adhesive 4 is more reliably maintained, and the first inner flange 34, the second inner flange 44, and the outer flange 14 are more connected. It can be reliably joined.

  Here, in this method, the heat capacity of the first inner flange 34 is the same as the heat capacity of the second inner flange 44, while the heat conductivity of the first inner flange 34 is higher than the heat conductivity of the second inner flange 44. Even when it is large, the same effects as those of the embodiment can be obtained. That is, even when the thermal conductivity of the first inner flange 34 is larger than the thermal conductivity of the second inner flange 44, the amount of heat dissipated by the first inner flange 34 is greater than that of the second inner flange 44. Since it becomes larger than the amount of heat, if the first heat insulating portion 38 having a higher degree of heat insulation is formed in the first inner flange 34, the amount of heat released from the adhesive 4 in the first inner flange 34 and the second inner flange 44. It is possible to maintain a proper transfer of the heat of the curing reaction in the adhesive 4 by suppressing the bias of the heat transfer from the adhesive 4.

  Further, the second heat insulating part 48 can be omitted. That is, the heat radiation amount in the first inner flange 34 and the second inner flange 44 may be made uniform by forming the heat insulating portion 38 only on the first inner flange 34 side. However, if the second heat insulating portion 48 is also formed on the second inner flange 44, the heat release from the adhesive 4 in the second inner flange 44 can be suppressed, and the chain of curing reaction of the adhesive 4 can be more reliably performed. Can be maintained.

  Moreover, in the said heat insulation part formation process, the method of making the heat insulation degree of a said 1st heat insulation part larger than the heat insulation degree of a said 2nd heat insulation part is not restricted above. As shown in FIG. 12, the first heat insulating portion 238 and the second heat insulating portion 248 have the same thickness, while the first heat insulating portion 238 is smaller than the thermal conductivity of the members constituting the second heat insulating portion 248. You may make it form with the member which has thermal conductivity. Alternatively, the second heat insulating portion 248 may be omitted, and only the first heat insulating portion 238 having a low thermal conductivity may be formed. For example, when each of the first panel 234 and the second panel 244 is an aluminum plate, the surface of the first panel 234 is alumite-treated, and the chemical conversion treatment film having a smaller thermal conductivity than the pure aluminum material is applied to the surface of the first panel 234. This film may be used as the first heat insulating portion 238.

  Further, the tailored blank process can be omitted. In other words, as shown in FIG. 13, the present invention provides the first bonding only by bonding the first bonding member 334 and the second bonding member 344 that are separated from each other to the bonded member 314 through the adhesive 4. Also included is a member that joins the member 334 and the second adhesive member 344 to each other.

Further, as shown in FIG. 14 , the second adhesive member 444 and the first adhesive member 434 having a larger heat capacity or thermal conductivity than the second adhesive member 444 are separated from each other, and the adhesive members 434 and 444 are connected to each other. , the case you bonded with the adhesive 4 with intervening adhesive 4 between them by a second adhesive member 434 than the second heat insulating member 448 forms a larger first adiabatic portion 438 of the heat-insulating degree In particular, the unevenness of the curing reaction heat of the adhesive 4 in the separating direction of the first adhesive member 434 and the second adhesive member 444 is suppressed, and the separation between the first adhesive member 434 and the second adhesive member 444 is suppressed. be able to.

  The specific configuration of the adhesive 4 is not limited to the above. For example, a solid adhesive or a liquid adhesive may be used and applied or filled between the side frame outer panel 10 and the center pillar inner panel 20.

  In addition, the specific configuration of the heat insulating agent 104 is not limited to the above, and may be constructed of a member other than the adhesive 4.

  In the curing step, the specific method for curing the adhesive 4 is not limited to the above.

It is a schematic plan view of the inner pillar inner panel to which the method for constructing the joint structure according to the present invention is applied. It is the II-II sectional view taken on the line of FIG. It is the III-III sectional view taken on the line of FIG. It is a schematic plan view of the side frame outer panel to which the construction method of the joint structure according to the present invention is applied. It is the VV sectional view taken on the line of FIG. It is explanatory drawing which shows the aspect of a heat insulation part formation process. It is a figure which shows the outline | summary of the adhesive agent coating apparatus for apply | coating an adhesive agent. It is explanatory drawing which shows the aspect of an adhesive agent arrangement | positioning process. It is explanatory drawing which shows the aspect of an adhesive agent arrangement | positioning process. It is explanatory drawing which shows the aspect of a hardening process. It is explanatory drawing which shows the aspect of a hardening process. It is a figure which shows the other example to which the construction method of the junction structure which concerns on this invention was applied. It is a figure which shows the other example to which the construction method of the junction structure which concerns on this invention was applied. It is a figure which shows the other example to which the construction method of the junction structure which concerns on this invention was applied.

Explanation of symbols

4 Adhesive 10 Center pillar inner panel (Adhered member)
14 outer flange 20 side frame outer panel 30 first panel (first adhesive member)
34 1st inner flange 38 1st heat insulation part 40 2nd panel (2nd adhesive member)
44 2nd inner flange 48 2nd heat insulation part

Claims (10)

It is a construction method of a joint structure for constructing a joint structure in which a first adhesive member and a second adhesive member having at least one of thermal conductivity or heat capacity smaller than that of the first adhesive member are joined to a member to be adhered,
On the surface of the first adhesive member, a heat insulating portion forming step for forming a first heat insulating portion that restricts inflow of heat from the outside to the first adhesive member;
It is carried out after the heat insulating part forming step and is cured while generating a curing reaction heat by the energy applied to a part from the outside, and a part adjacent to the site where the curing reaction heat is generated has this curing reaction heat . The first heat-insulating portion is interposed between the adhesive and the first adhesive member. The chain-reaction type adhesive that is cured in a chain by causing a curing reaction while further generating a curing reaction heat is received. Thus, while arrange | positioning on the surface of this 1st heat insulation part, the adhesive agent arrangement | positioning process which arrange | positions the said adhesive agent on the surface of the said 2nd adhesive member,
Implemented after the adhesive placement step, imparts energy to the adhesive, and cures the adhesive while regulating heat transfer from the adhesive to the first adhesive member by the first heat insulating portion. A curing process ,
In the adhesive placement step, the adhesive is interposed between the first adhesive member and the adherend member, and the adhesive is interposed between the second adhesive member and the adherend member. Including
The curing step includes a step of bonding the first adhesive member and the adherend member by curing the adhesive, and joining the second adhesive member and the adherend member. How to build the structure. A method for constructing a joint structure according to claim 1,
In the heat insulating part forming step, a step of forming a second heat insulating part for restricting inflow of heat from the adhesive to the second adhesive member on a surface of the second adhesive member, and the first heat insulating part, Forming an amount that restricts the inflow of heat into the first adhesive member by the first heat insulating portion larger than an amount of restricting the inflow of heat to the second adhesive member by the second heat insulating portion. A method for constructing a joint structure, comprising: A method for constructing a joint structure according to claim 2,
In the heat insulating portion forming step, the thickness of the first heat insulating portion in the direction from the adhesive toward the first adhesive member is the thickness of the second heat insulating portion in the direction from the adhesive toward the second adhesive member. A method for constructing a joint structure, comprising a step of forming the joint structure to be thicker. A method for constructing a joint structure according to claim 2 or 3,
The said heat insulation part formation process includes the process of forming the said 1st heat insulation part so that the heat conductivity may become smaller than the heat conductivity of the said 2nd heat insulation part, The construction method of the junction structure characterized by the above-mentioned. A method for constructing a joint structure according to any one of claims 1 to 4,
A method for constructing a joint structure, comprising a tailored blank step, which is performed before the heat insulating portion forming step and joins the first adhesive member and the second adhesive member to each other by a tailored blank method. A bonding structure in which the first bonding member and the second bonding member are bonded to the bonded member,
The first adhesive member and the second adhesive member are separated in the same direction with respect to the adherend member,
While being disposed between the first adhesive member and the adherend member and between the second adhesive member and the adherend member, the heat of curing reaction is generated by the energy applied to a part from the outside. The first adhesive member is cured and chained by causing the curing reaction to occur while the portion adjacent to the site where the curing reaction heat is generated receives the curing reaction heat and further generates the curing reaction heat. And an adhesive for joining the second adhesive member to the adherend member,
The first adhesive member has at least one of thermal conductivity or heat capacity greater than that of the second adhesive member,
A joining structure characterized in that a first heat insulating part for restricting the inflow of heat from the adhesive to the first adhesive member is provided between the first adhesive member and the adhesive. The joint structure according to claim 6,
Between the second adhesive member and the adhesive, there is provided a second heat insulating part that restricts the inflow of heat from the adhesive to the second adhesive member,
The amount of the heat insulation part that restricts the inflow of heat to the first adhesive member is larger than the amount of the second heat insulation part that restricts the inflow of heat to the second adhesive member. Junction structure. The joint structure according to claim 7,
The thickness of the first heat insulating part in the direction from the adhesive toward the first adhesive member main body is thicker than the thickness of the second heat insulating part in the direction from the adhesive toward the second adhesive member main body. Joining structure. The joint structure according to claim 7 or 8,
The junction structure characterized in that the thermal conductivity of the first heat insulating part is smaller than the thermal conductivity of the second heat insulating part. It is the junction structure according to any one of claims 6 to 9,
The joining structure, wherein the first adhesive member and the second adhesive member are joined to each other by a tailored blank method.

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