JP2006167752A - Joined structure of metallic sheet - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To improve the joining strength of respective metallic sheets by filling bent portions of the metallic sheets with an adhesive agent. <P>SOLUTION: A joined structure of metallic sheets is configured as follows. The upper flange portion 12 of an upper metallic sheet 10 is put on the lower flange portion 22 of a lower metallic sheet 20 so as to overlap with each other via an adhesive agent 30. The overlapped portion is joined by being pinched and welded, and the upper wall portion 11 of the upper metallic sheet 10 and the lower wall portion 21 of the lower metallic sheet 20 form a continuous vertical wall 31. The joined structure of metallic sheets has a sheet portion 40, which is arranged between the upper flange portion 12 and the lower flange portion 22, and projects from the vertical wall 31 in the direction opposite to the upper flange portion 12 and the lower flange portion 22. The adhesive agent 30 is stored between the upper bent portion 13 and the lower bent portion 23. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a metal plate joining structure in which two metal plates are joined to each other at a flange portion by an adhesive and welding.

  Spot welding is used for joining metal plates in large products such as automobile vehicles and railway vehicles. In spot welding, two stacked metal plates are sandwiched between a pair of electrode tips, and a current is passed in the thickness direction while applying pressure to form melted parts called weld nuggets on both metal plates. The two metal plates are welded to each other in a dot shape.

  When this spot welding is performed, there is a joining method called weld bond joining in which a bonding portion of each metal plate is filled with an adhesive in advance (see, for example, Patent Document 1). According to this bonding method, since the bonding strength by the adhesive is added to the bonding strength by spot welding, the bonding strength is improved by the amount of solidified adhesive when the spot welding spot positions and number are the same. Can do.

In the metal plate joining structure described in Patent Document 1, two metal plates continuously form one wall portion, and a flange portion substantially perpendicular to the wall portion is formed at the boundary portion of each metal plate. Then, in a state where the adhesive is filled between the flange portions, the flange portions are overlapped and spot welding is performed. In each metal plate, the wall portion and the flange portion are continuously formed via a curved bent portion. As described above, in a portion formed in a bag shape by two metal plates such as an outer panel and an inner panel of a vehicle, a flange portion is formed on each metal plate and spot welding is generally performed.
JP 2004-82136 A

  By the way, if the adhesive can be solidified not only between the flange portions of the respective metal plates but also on the bent portion side, the bonding strength is greatly improved. However, when each metal plate has a bag-like structure, it is necessary to apply an adhesive to the flange portion in advance before overlapping the flange portions, and the adhesive is filled between the bent portions. I can't. And even if the adhesive protrudes from the flange portion during the pinching of spot welding, the bent portions of the upper metal plate and the lower metal plate are formed so as to be separated from each other from the flange portion side. The adhesive flows down the wall before solidifying between the bent portions.

  The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a metal plate capable of improving the bonding strength of each metal plate by filling the bent portion of the metal plate with an adhesive. It is to provide a joint structure.

  In order to achieve the above object, according to the first aspect of the present invention, the upper wall portion that extends substantially vertically and the upper flange portion that extends substantially horizontally are continuously formed via the upper bent portion that is curved. An upper metal plate, a lower wall portion that extends substantially vertically and a lower flange portion that extends substantially horizontally, and a lower metal plate that is continuously formed through a lower bent portion that is curved, The upper flange portion of the upper metal plate and the lower flange portion of the lower metal plate are joined by being clamped and welded in an overlapped state with an adhesive interposed therebetween, and the upper wall portion and the In the metal plate joint structure in which the lower wall portion continuously forms a vertical wall, the metal plate is interposed between the upper flange portion and the lower flange portion, and is opposite to the upper flange portion and the lower flange portion from the vertical wall. It has the board part which protrudes to the side, It is characterized by the above-mentioned.

According to the first aspect of the present invention, the plate portion projects from the vertical wall to the opposite side of each flange portion, and is formed by the lower bent portion of the lower metal plate and the upper bent portion of the upper metal plate. The space will be bisected.
As a result, when the upper flange portion, the plate portion and the lower flange portion are overlapped and clamped during welding with the adhesive applied to the mating surfaces, the adhesive protruding from the upper flange portion and the lower flange portion is The bent portion and the plate portion and the corner portion formed by the lower bent portion and the plate portion are stored. And it will solidify in the state with which the adhesive was filled in the upper side bending part of the upper metal plate, and the lower side bending part of the lower metal plate. Here, when there is no plate portion protruding from the vertical wall as in the prior art, the protruding adhesive has a large space formed by the upper bent portion and the lower bent portion, so the vicinity of each bent portion It can't stay in and flows down the lower wall.
Therefore, in addition to the flange portions, the upper metal plate and the lower metal plate are bonded to each other in the upper bent portion and the lower bent portion, and the upper metal plate and the lower metal plate are bonded only by the flange portions. The bonding strength can be dramatically improved as compared with the conventional bonding. In addition, by using an adhesive that has conventionally flowed down along the lower wall portion, the adhesive required for joining does not increase, which is extremely advantageous in practical use.

  According to a second aspect of the present invention, in the metal plate joining structure according to the first aspect, the plate portion is an end portion of the upper flange portion of the upper metal plate or the lower flange portion of the lower metal plate. It is characterized in that it is formed by folding the end portion of the.

According to the second aspect of the present invention, in addition to the operation of the first aspect, the plate portion is formed by folding back the end portion of the upper flange portion or the end portion of the lower flange portion. The number of parts does not increase.
Also, at the end of the upper flange portion or the folded portion of the end of the lower flange portion, the adhesive does not flow out to the outside during clamping, and the adhesive can be efficiently filled between the flange portions. it can.

  According to a third aspect of the present invention, in the metal plate joining structure according to the first or second aspect, a hole portion that penetrates vertically is formed in the plate portion.

According to invention of Claim 3, in addition to the effect | action of Claim 1 or 2, when an upper flange part, a board part, and a lower flange part are piled up and pinched, it is between an upper flange part and a board part. When the adhesive is filled in, the adhesive is pushed out between the lower flange portion and the plate portion through the hole, and when the adhesive is filled between the lower flange portion and the plate portion, the hole portion The adhesive is extruded between the upper flange portion and the plate portion.
Therefore, by applying an adhesive to one of the upper flange portion side and the lower flange portion side, the adhesive is filled into the other at the time of clamping, so it is only necessary to apply the adhesive to one flange portion side. The adhesive can be applied only once, and the manufacturing cost can be reduced.

  According to a fourth aspect of the present invention, in the metal plate joining structure according to any one of the first to third aspects, the upper flange portion or the lower flange portion is provided on at least one of the upper surface and the lower surface of the plate portion. It is characterized in that a ridge portion extending in parallel with the end portion of the ridge is formed.

According to the invention described in claim 4, in addition to the operation of any one of claims 1 to 3, when the upper flange portion, the plate portion, and the lower flange portion are overlapped, the protruding portion is the upper flange. By abutting on the portion or the lower flange portion, a gap is generated between the plate portion and the upper flange portion or the lower flange portion. Since the adhesive temporarily accumulates in the gap, the adhesive can be accurately distributed to the mating surfaces.
In addition, when the flange is formed along the end of the flange part that abuts on the flange, if the flanges are clamped, the protrusion prevents the adhesive from flowing out between the flanges. Thus, the adhesive can be efficiently filled between the flange portions.

  Thus, according to the present invention, the adhesive can be solidified by filling the adhesive between the upper bent portion of the upper metal plate and the lower bent portion of the lower metal plate. The joint strength can be dramatically improved.

  1 to 4 show a first embodiment of the present invention. FIG. 1 is a schematic perspective view of a side member of an automobile body, FIG. 2 is a schematic sectional view of the side member, and FIG. FIG. 4 is a schematic cross-sectional view of the side member in a state where the upper flange portion, the central metal plate and the lower flange portion are overlapped without applying an adhesive. FIG.

  As shown in FIG. 1, this metal plate joining structure is used for a side member extending substantially front and rear in an automobile body, and an upper metal plate 10 having a substantially hat-shaped section and a substantially inverted hat-shaped section. The lower metal plate 20 is joined. The upper metal plate 10 and the lower metal plate 20 each made of iron are joined by spot welding in a state where the adhesive 30 is applied to the mating surfaces, and the upper metal plate 10 and the lower metal plate 20 The wall part 21 forms the vertical wall 31 continuously. The upper metal plate 10 has an upper flange portion 12 that extends substantially horizontally, the lower metal plate 20 has a lower flange portion 22 that extends substantially horizontally, and the lower surface of the upper flange portion 12 and the upper surface of the lower flange portion 22. Has a mating surface.

  As shown in FIG. 1, the upper metal plate 10 is formed such that an upper wall portion 11 that extends substantially vertically and an upper flange portion 12 that extends substantially horizontally are continuously formed via an upper bent portion 13 that is curved. . In addition, the lower metal plate 20 is formed such that a lower wall portion 21 extending substantially vertically and a lower flange portion 22 extending substantially horizontally are continuously formed via a lower bent portion 23 that is curved. As shown in FIG. 2, the upper bent portion 13 and the lower bent portion 23 are formed with substantially the same curvature, and are convexly formed inside the closed cross section formed by the respective metal plates 10 and 20. Thereby, the vertical wall 31 and each flange part 12 and 22 are connected smoothly.

  As shown in FIG. 2, a central metal plate 40 is disposed between the upper metal plate 10 and the lower metal plate 20 separately. The central metal plate 40 as the plate portion is thinner than the upper metal plate 10 and the lower metal plate 20 and is formed substantially horizontally. The central metal plate 40 includes an intervening section 41 interposed between the upper flange section 12 and the lower flange section 22 and a projecting section projecting from the vertical wall 31 to the opposite side of the upper flange section 12 and the lower flange section 22. 42. That is, the protruding section 42 of the central metal plate 40 protrudes from the vertical wall 31 to the opposite side of the flange portions 12 and 22, and the lower bent portion 23 of the lower metal plate 20 and the upper bent portion 13 of the upper metal plate 10. The space formed by is divided into two equal parts. In this metal plate joining structure, the upper flange portion 12 of the upper metal plate 10 and the lower flange portion 22 of the lower metal plate 20 sandwich the intervening section 41 of the central metal plate 40 and overlap with the adhesive 30 interposed therebetween. Bonding is performed by clamping and welding in the combined state.

  As shown in FIG. 3, the central metal plate 40 is formed with a plurality of holes 43 penetrating vertically. In the present embodiment, the holes 43 are long holes that are formed side by side at a predetermined interval in the front-rear direction and extend in the horizontal direction. Each hole 43 is formed so as to straddle the intervening section 41 and the projecting section 42. That is, as shown in FIG. 3, each hole 43 overlaps with the lower bent portion 23 in a top view.

  As shown in FIG. 4, an outflow prevention bead 44 extending in parallel with the end of the upper flange portion 12 is formed on the upper surface of the central metal plate 40. The outflow prevention bead 44 as the protruding portion is disposed at the end of the central metal plate 40 on the intervening section 41 side. In the present embodiment, since the end of the central metal plate 40 on the intervening section 41 side substantially coincides with the end of each flange portion 12, 22, the outflow prevention bead 44 is located at the end of the upper flange portion 12. Are formed along.

  Further, as shown in FIG. 4, a pair of left and right floating beads 45 extending along the end of the lower flange portion 22 are formed on the lower surface of the central metal plate 41. Each levitation bead 45 as a protruding portion is formed to be substantially bilaterally symmetrical in the intervening section 41 of the central metal plate 40. Each levitation bead 45 is formed on the left and right inner sides from each end of the intervening section 41, and is crushed by the clamping pressure of a pair of electrode tips during spot welding.

  In this metal plate bonding structure, a semi-fluid adhesive 30 is applied to the lower surface of the upper flange portion 12 when the metal plates 10 and 20 are bonded. The adhesive 30 filled between the upper flange portion 12 and the central metal plate 40 is formed in each hole portion by overlapping and sandwiching the flange sections 12 and 22 and the intervening section 41 of the central metal plate 40. 43, the adhesive 30 is pushed out between the lower flange portion 22 and the central metal plate 40 through the flange portions 12 and 22 (see FIG. 2). In this embodiment, this clamping pressure is performed by sandwiching the flange portions 12 and 22 with a pair of electrode tips during spot welding. Spot welding is performed so as to avoid the holes 43 of the central metal plate 40 at intervals in the front-rear direction, and a plurality of nuggets 32 arranged in the front-rear direction are formed on the flange portions 12 and 22 (see FIG. 1). .

  Further, as shown in FIG. 3, when the upper flange portion 12, the central metal plate 40 and the lower flange portion 22 are overlapped, the floating bead 45 abuts on the lower flange portion 22, so that the central metal plate A gap is generated between 40 and the lower flange portion 22. Since the adhesive 30 flowing out from each hole 43 is temporarily stored in the gap, the adhesive can be accurately distributed to the mating surfaces. Thereafter, the floating beads 45 are crushed by the clamping pressure.

  Further, between the upper flange portion 12 and the central metal plate 40, the outflow prevention beads 44 during pinching prevent the outflow of the adhesive 30 from between the flange portions 12 and 22 to the outside. The flange portions 12 and 22 can be efficiently filled.

  Here, since the space formed by the bent portions 13 and 23 is equally divided by the central metal plate 40, the upper flange portion 12, the central metal plate 40, and the When the lower flange portion 22 is overlapped and clamped during welding, the adhesive 30 protruding from the upper flange portion 12 and the lower flange portion 22 becomes the upper bent portion 13, the central metal plate 40, and the lower bent portion 23. And stored in the corner formed by the central metal plate 40. Then, the adhesive 30 is solidified in a state in which the upper bent portion 13 of the upper metal plate 10 and the lower bent portion 23 of the lower metal plate 20 are filled. Here, when there is no central metal plate protruding from the vertical wall 131 like the conventional one shown in FIG. 6, the protruding adhesive 30 has a space formed by the upper bent portion 113 and the lower bent portion 123. Since it is large, it cannot stay in the vicinity of the bent portions 113 and 123 but flows down along the lower wall portion 121.

  As described above, the upper metal plate 10 and the lower metal plate 20 are bonded to each other in the upper bent portion 13 and the lower bent portion 23 in addition to the flange portions 12 and 22. Compared with the conventional one in which the upper metal plate 10 and the lower metal plate 20 are bonded together, the bonding strength can be dramatically improved. Further, by using the adhesive 30 that has conventionally flowed down along the lower wall portion 21, the adhesive 30 required for joining does not increase, which is extremely advantageous in practical use.

  Further, according to the metal plate joining structure of the present embodiment, the hole 43 is formed in the central metal plate 40, and the adhesive 30 is applied to either the upper flange portion 12 side or the lower flange portion 22 side. Since the adhesive 30 is filled into the other during clamping, the adhesive 30 only has to be applied to the one flange portion 12, 22 side, and the application work of the adhesive 30 can be completed at once. Manufacturing cost can be suppressed.

  Moreover, according to this embodiment, since each hole 43 was formed so as to straddle the intervening section 41 and the projecting section 42, the adhesive 30 hardly flows out to the opposite side to the projecting section 42, and each flange section 12, 22. This is effective in preventing the adhesive 30 from flowing out from the end on the opposite side of the vertical wall 31 to the outside. Furthermore, since each hole 43 is formed so as to overlap the lower bent portion 23, the adhesive 30 can be accurately guided to the lower bent portion 23.

  Here, as shown in FIGS. 6 and 7, the adhesive 30 is formed using a material in which the central metal plate is not disposed between the upper wall portion 111 and the lower metal plate 120 of the upper metal plate 110 as shown in FIGS. 6 and 7. The experimental data which measured how joint strength changed with the application state of are shown. In the experiment, the adhesive 30 was applied between the flanges 112 and 122 in addition to spot welding as shown in FIG. 6 in which the flanges 112 and 122 were joined only by spot welding (hereinafter referred to as sample 1). A solidified material (hereinafter referred to as sample 2) and a material obtained by solidifying the adhesive 30 between the flange portions 112 and 122 and the bent portions 113 and 123 in addition to spot welding as shown in FIG. Hereinafter, it was divided into Sample 3). Samples 1 to 3 had the same shape as the side members used in actual car bodies.

  As shown in FIG. 5, the bonding strengths of the flange portions 112 and 122 were higher in the order of sample 3, sample 2, and sample 1. In FIG. 5, the horizontal axis represents the opening displacement of each of the flange portions 112 and 122, and the vertical axis represents the load necessary for this opening displacement. Comparing sample 2 and sample 3, it has been experimentally proven that sample 3 must be loaded approximately 1.5 times or more at the same opening displacement. Thus, experimentally, when not only the flange portions 112 and 122 but also the upper bent portion 113 or the lower bent portion 123 is filled with the adhesive 30 and solidified, the bonding strength is drastically improved. It has been confirmed.

  In the first embodiment, the adhesive 30 is applied to the upper flange portion 12 and the adhesive 30 is guided to the lower flange portion 22 through the holes 43. The adhesive 30 may be applied to guide the adhesive 30 to the upper flange portion 12 side.

  In the first embodiment, each hole 43 is formed as a long hole extending left and right. However, the shape of each hole may be another shape such as a round hole. May be formed continuously in the front-rear direction without any interval. For example, when the adhesive 30 is filled more into the vertical wall 31 side, it is possible to have a shape that expands toward the vertical wall 31 side. Further, when the adhesive 30 is applied to both the upper flange portion 12 and the lower flange portion 22, the adhesive 30 is not formed between the flange portions 12 and 22 and the central metal plate 40 without forming the hole portions 43. Can be spread over.

  In the first embodiment, the outflow prevention beads 44 are formed on the upper surface of the central metal plate 40. However, they may be formed on the lower surface of the central metal plate 40, and may be formed on at least one of the upper and lower surfaces. If formed, it is possible to prevent the adhesive 30 from flowing out of the flange portions 12 and 22.

  In the first embodiment, the floating bead 45 is formed on the lower surface of the central metal plate 40. However, it may be formed on the upper surface of the central metal plate 40, and may be formed on at least one of the upper surface and the lower surface. If it is done, the storage action between each flange part 12 and 22 of adhesive 30 can be obtained.

  In the first embodiment, the central metal plate 40 is thinner than the upper metal plate 10 and the lower metal plate 20, but the thickness of each metal plate 10, 20, 40 can be changed as appropriate. It is.

  8 to 10 show a second embodiment of the present invention. FIG. 8 is a schematic perspective view of a side member of an automobile body, FIG. 9 is a schematic sectional view of the side member, and FIG. It is a partial top view of a side metal plate.

  This metal plate joining structure also joins the upper metal plate 210 whose section is formed in a substantially hat shape and the lower metal plate 220 whose section is formed in a substantially inverted hat shape, as in the first embodiment. Is. As shown in FIG. 8, the upper metal plate 210 has an upper wall portion 211 that extends substantially vertically and an upper flange portion 212 that extends substantially horizontally via an upper bent portion 213 that is curved. . The lower metal plate 220 includes a lower wall portion 221 that extends substantially vertically and a lower flange portion 222 that extends substantially horizontally via a bent lower portion 223 that is curved. Further, the end of the lower flange portion 222 opposite to the vertical wall 231 is folded back to form an interposition portion 224 that is interposed between the upper flange portion 212 and the lower flange portion 222.

  As shown in FIG. 9, the interposition portion 224 as a plate portion is formed substantially horizontally, and includes an interposition section 241 interposed between the upper flange portion 212 and the lower flange portion 222, and the vertical wall 231 to the upper flange portion 212. And a projecting section 242 projecting to the opposite side from the lower flange portion 222. That is, the protruding section 242 of the interposition part 224 protrudes from the vertical wall 231 to the opposite side of the flange parts 212 and 222, and the lower bent part 223 of the lower metal plate 220 and the upper bent part 213 of the upper metal plate 210 Thus, the space formed is divided into two equal parts. In this metal plate joining structure, the upper flange portion 212 of the upper metal plate 210 and the lower flange portion 222 of the lower metal plate 220 sandwich the interposition section 241 of the interposition portion 224 and overlap with the adhesive 30 interposed therebetween. In this state, they are joined by pressing and welding.

  As shown in FIG. 9, the interposition part 224 is formed with a plurality of holes 225 penetrating vertically. As shown in FIG. 10, two holes 225 arranged side by side form one set, and a plurality of sets of holes 225 are formed side by side at a predetermined interval. In this embodiment, each hole 225 is a round hole, and the hole 225 on the opposite side to the vertical wall 231 among the two left and right holes 225 is formed in the intervening section 41, and the hole 225 on the vertical wall 231 side. Is formed in the protruding section 42. That is, as shown in FIG. 10, the hole 225 on the vertical wall 231 side overlaps the lower bent portion 223 in a top view.

  In this metal plate bonding structure, the semi-fluid adhesive 30 is applied to the lower surface of the upper flange portion 212 when the metal plates 210 and 220 are bonded. Then, the flanges 212 and 222 and the interposition part 224 are overlapped and sandwiched so that the adhesive 30 filled between the upper flange part 212 and the interposition part 224 passes through the hole part 225 and the lower flange part. The adhesive 30 is pushed between 222 and the interposition part 224 so that the adhesive 30 reaches the flange parts 212 and 222 (see FIG. 9).

  Here, since the space formed by the bent portions 213 and 223 is equally divided by the interposition portion 224, the upper flange portion 212, the interposition portion 224 and the lower side are applied with the adhesive 30 applied to the mating surfaces. When the flange portions 222 are overlapped and clamped during welding, the adhesive 30 protruding from the upper flange portion 212 and the lower flange portion 222 becomes the upper bent portion 213 and the interposed portion 224, and the lower bent portion 223 and the interposed portion. It is stored in the corner formed by 224. Then, the adhesive 30 is solidified in a state where it is filled in the upper bent portion 213 of the upper metal plate 210 and the lower bent portion 223 of the lower metal plate 220.

  As described above, the upper metal plate 210 and the lower metal plate 220 are bonded to each other at the upper bent portion 213 and the lower bent portion 223 in addition to the flange portions 212 and 222. Compared to the conventional one in which the upper metal plate 210 and the lower metal plate 220 are bonded together, the bonding strength can be dramatically improved. Further, by using the adhesive 30 that has conventionally flowed down along the lower wall portion 221, the adhesive 30 required for joining does not increase, which is extremely advantageous in practical use.

Further, according to the metal plate joining structure of the present embodiment, since the interposition part 224 is formed by folding back the end of the lower flange part 222, it is not necessary to provide another member for the interposition part 224, and the number of parts increases. Never do.
Further, in the folded portion at the end of the lower flange portion 222, the adhesive 30 does not flow out to the outside during clamping, and the adhesive 30 can be efficiently filled between the flange portions 212 and 222. .

  In addition, since the hole 225 is formed in the interposition part 224 and the adhesive 30 is applied to the upper flange part 212 side, the adhesive 30 is filled to the lower flange part 222 side at the time of clamping. It is only necessary to apply the agent 30 only to the upper flange portion 212 side, and the application work of the adhesive 30 can be completed at once, and the manufacturing cost can be suppressed. In addition, since each hole 225 on the vertical wall 231 side is formed so as to overlap the lower bent portion 23, the adhesive 30 can be accurately guided to the lower bent portion 23.

  In the second embodiment, two round hole-shaped holes 225 are arranged side by side. However, for example, the hole may be a long hole extending left and right, or the hole may be Alternatively, they may be formed continuously in front and back without any gap.

  In the second embodiment, the interposition portion 224 is formed by folding the end portion of the lower flange portion 222. However, the same effect can be obtained if the end portion of the upper flange portion 212 is folded. An effect can be obtained. In this case, an adhesive may be applied to the upper surface of the lower flange portion, and the adhesive may be pushed out to the upper flange portion side through the hole portion of the interposition portion during clamping.

  In the second embodiment, the surface of the interposition part 224 is substantially flat without forming protrusions on the upper surface and the lower surface of the interposition part 224, but as in the first embodiment. An outflow prevention bead or a levitation bead may be formed.

  Further, in the first and second embodiments, the metal plate joining structure of the present invention is used for an automobile body, but it can also be used for a railway body, an aircraft, or the like. Moreover, although what was used for the side member of a motor vehicle body was shown, it may be used for other parts, such as a cross member and a pillar. Here, even if the metal plate is divided vertically and horizontally or extending like a pillar, bonding is performed with one metal plate on the upper side and the other metal plate on the lower side, and the adhesive solidifies. After that, it can be assembled to other parts.

  Furthermore, in the first and second embodiments, the substantially hat-shaped metal plate and the substantially inverted hat-shaped metal plate are joined, but the upper metal plate is the upper wall portion, the upper curved portion, and If it has an upper flange part and a lower metal plate has a lower wall part, a lower curved part, and a lower flange part, the shape of an upper metal plate and a lower metal plate will not be ask | required.

  Moreover, in 1st and 2nd embodiment, although what welded the upper flange parts 12 and 212 and the lower flange parts 22 and 222 by spot welding was shown, even if it welds by seam welding, for example Good. In other words, if the clamping of the flange portions 12, 22, 212, and 222 is performed together with welding, the same effects as those of the above-described embodiment can be obtained regardless of the welding method.

  In the first and second embodiments, the upper metal plate 10 and the lower metal plate 20 are made of iron, but may be made of other metals such as aluminum. Further, the surface roughness of the lower flange portions 22 and 222 may be made rougher than that of the upper flange portions 12 and 212 so that the adhesive 30 can be easily stored, and other specific details such as a detailed structure are also possible. Of course, it can be changed appropriately.

1 is a schematic perspective view of a side member of an automobile body showing a first embodiment of the present invention. It is typical sectional drawing of a side member. It is a top view of the center metal plate in the state piled up on the lower flange part. It is a typical sectional view of a side member in a state where an upper flange part, a central metal plate, and a lower flange part are overlapped without applying an adhesive. It is a graph which shows the relationship between the opening displacement of a flange part, and a load. FIG. 4 is a schematic cross-sectional view of a side member in which an upper wall portion and a lower wall portion are formed substantially flush with each flange portion filled with an adhesive. It is typical sectional drawing of the side member which formed the upper wall part and the lower wall part substantially flush, and filled each flange part and each bending part with the adhesive agent. It is a typical perspective view of the side member of the motor vehicle body which shows the 2nd Embodiment of this invention. It is typical sectional drawing of a side member. It is a partial top view of a lower metal plate.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Upper metal plate 11 Upper wall part 12 Upper flange part 13 Upper bent part 20 Lower metal plate 21 Lower wall part 22 Lower flange part 23 Lower bent part 30 Adhesive 31 Vertical wall 40 Central metal plate 41 Intervening section 42 Protruding section 43 Hole 44 Outflow prevention bead 45 Floating bead 210 Upper metal plate 211 Upper wall portion 212 Upper flange portion 213 Upper bent portion 220 Lower metal plate 221 Lower wall portion 222 Lower flange portion 223 Lower bent portion 224 Interposition part 225 Hole part 231 Vertical wall

Claims (4)

An upper metal plate formed by an upper wall portion extending substantially vertically and an upper flange portion extending substantially horizontally continuously through a curved upper bent portion;
A lower metal plate formed such that a lower wall portion extending substantially vertically and a lower flange portion extending substantially horizontally are continuously formed via a lower bent portion formed to be curved,
The upper flange portion of the upper metal plate and the lower flange portion of the lower metal plate are joined by being sandwiched and welded in an overlapped state with an adhesive interposed therebetween,
In the metal plate joining structure in which the upper wall portion and the lower wall portion continuously form a vertical wall,
A metal plate joining structure comprising a plate portion interposed between the upper flange portion and the lower flange portion and projecting from the vertical wall to the opposite side of the upper flange portion and the lower flange portion. .   2. The metal according to claim 1, wherein the plate portion is formed by folding back an end portion of the upper flange portion of the upper metal plate or an end portion of the lower flange portion of the lower metal plate. Plate joint structure.   The metal plate joining structure according to claim 1, wherein a hole portion that vertically penetrates the plate portion is formed.   The ridge part extended in parallel with the edge part of the said upper side flange part or the said lower side flange part was formed in at least one of the upper surface and lower surface of the said board part, The any one of Claim 1 to 3 characterized by the above-mentioned. Metal plate joint structure as described in 4.

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