JP5724572B2 - Blank material flange joint structure - Google Patents

Description

  The present invention relates to a joining structure of blank material flanges formed by joining a plurality of blank material flanges by an adhesive and spot welding.

  As is well known, in a car body of an automobile, a plurality of blank materials press-formed into a predetermined shape are overlapped and joined by spot welding. In addition, spot welding is performed in a state where an adhesive is applied to the joining surfaces of a plurality of blank materials, and a plurality of blank materials are also joined by so-called weld bonds. According to such weld bonds, spot welding is performed. It is known that the bonding strength and the sealing performance can be improved as compared with each other.

  In a car body, a part to which a weld bond to be joined by this adhesive and spot welding is generally applied is a flange which is an end face part of a blank material. It has been a problem that the adhesive applied to the joint surface of the metal protrudes from between the flanges during spot welding.

  On the other hand, as a means for suppressing the adhesive from protruding between the flanges, for example, in Patent Document 1, a protrusion extending in the longitudinal direction is provided on one outer portion of the overlapped flange and the other flange is Disclosed is a method in which a plurality of protrusions having substantially the same height as the protrusions are provided in the inner part at predetermined intervals in the longitudinal direction, and spot welding is performed with an adhesive applied between the protrusions and the protrusions. Has been. Further, for example, in Patent Document 2, a raised portion is provided intermittently spaced in the longitudinal direction on the inner portion of one of the overlapped flanges, and an adhesive is disposed on the raised portion between the raised portions. A device that performs spot welding is disclosed.

Japanese Utility Model Publication No. 1-149063 JP 2006-213262 A

  As described in Patent Document 1 and Patent Document 2, by providing a portion for accumulating the adhesive on the flange of the overlapped blank material, the adhesive protrudes from between the flanges of the blank material during spot welding. Although it can be suppressed, it is not possible to secure the part that stores the adhesive, or the appearance may be damaged by the part that stores the adhesive, so without changing the flange shape of the blank material on both sides, It is desirable to suppress the adhesive from protruding between the flanges of the blank material.

  In addition, the inventors of the present application have conducted various tests and studies, and in the case where the flanges of two blank materials are joined together by an adhesive and spot welding, the other flange is held in a fixed electrode. When spot welding is performed by pressing the flange with the movable side electrode, in addition to the adhesive protruding from between the flanges during spot welding, both flange surfaces are between the welds in the flange pressed by the movable side electrode. It has been found that the adhesive protrudes from between the flanges even when the deflection is caused to be separated and the deflection is deformed in a direction in which the deflection is reduced after spot welding.

  In an automobile body, electrodeposition coating is generally applied as a rust prevention treatment to prevent rusting on the blank material after joining the flanges of two blank materials by adhesive and spot welding. If the adhesive protrudes between the flanges after the electrodeposition coating, the electrodeposition coating is peeled off, and rusting may occur from the portion.

  FIG. 9 is a perspective view showing flanges of two blank members joined by an adhesive and spot welding. FIG. 10 is an explanatory view for explaining the protrusion of the adhesive from between the flanges after spot welding. In FIG. 10, the flanges of the two blank members shown in FIG. FIG. 10 (a) shows a state immediately after the electrodeposition coating is performed, and FIG. 10 (b) shows a state immediately after the electrodeposition coating is performed. ) Shows the state in the drying process after electrodeposition coating.

  As shown in FIG. 9, the flange 101 a is fixed to the fixed side in a state where the adhesive 103 is applied between the substantially flat flange 101 a of the first blank material 101 and the substantially flat flange 102 a of the second blank material 102. When electrodeposition coating is applied from the flange 102a side after spot welding is performed with the flange 102a being pressed by the movable electrode while being held by the electrode and the welded part SW is formed, as shown in FIG. Immediately after the electrodeposition coating, the electrodeposition coating film 104 is formed on the flanges 101a and 102a, and the electrodeposition coating film 104 is also formed on the portion 103a of the adhesive 103 protruding from the flange 102a during spot welding. The Rukoto. This protruding portion 103a is a flange in a direction in which the blank materials 101 and 102 are clamped before spot welding, a step of pressing a spot welding electrode, and a direction away from the flange 101a generated between the welds SW during spot welding. The deflection of 102a is caused by deformation in a direction in which the deflection is reduced after a predetermined time, that is, in a direction in which the separation distance D between the flanges 101a and 102a is reduced.

  Subsequently, as shown in FIG. 10 (b), when the electrodeposition coating is performed and the drying process is started, the viscosity of the adhesive temporarily decreases as the temperature rises, and the adhesive 103 becomes flanged. Further, the electrodeposition coating film 104 is peeled off from the portion 102a, and rust is generated from the peeled portion P.

  In this way, when electrodeposition coating is applied after joining the flanges of two blank materials by adhesive and spot welding, in addition to the adhesive protruding from between the flanges of the blank material during spot welding. Thus, there is a problem that the adhesive protrudes from between the flanges of the blank material in the drying process after the electrodeposition coating.

  Then, this invention can suppress that an adhesive protrudes from between flanges at the time of spot welding of the blank material of both sides, and can suppress that an adhesive protrudes between flanges after spot welding. It aims at providing the joining structure of a material flange.

  For this reason, the invention which concerns on Claim 1 of this application is the joining structure of the blank material flange formed by joining the flange of a some blank material by an adhesive agent and spot welding, Comprising: The flange of a 1st blank material, and 2nd The flange of the third blank member is sandwiched between the flange of the blank member and the flange of the first blank member and between the flange of the second blank member and the flange of the second blank member. The flange of the third blank member protrudes toward the outer side of the flange of the third blank member and is bonded to the flange of the first blank member and the flange of the second blank member by an adhesive and spot welding. A plurality of welded projecting surface portions and a flange of the first blank material and a furan of the second blank material while projecting toward the outer side of the flange of the third blank material And a deformation-suppressing protruding surface portion that suppresses deformation of one of the first blank material and the second blank material, and is provided with the deformation-suppressing protruding surface portion. It is provided in the state spaced apart between the said protrusion surface parts for welding in the longitudinal direction of the flange of 3 blank materials, It is characterized by the above-mentioned.

  In addition, the invention according to claim 2 of the present application is the invention according to claim 1, wherein the deformation-suppressing protruding surface portion moves toward the outer side of the flange of the third blank material, and the flange of the first blank material. And the second blank material is provided so as to be inclined so as to approach the flange side where the deflection due to spot welding is large.

  Further, the invention according to claim 3 of the present application is the invention according to claim 1 or 2, wherein the flange of the first blank member is the vehicle body at the upper end portion of the dash panel lower disposed on the front side of the passenger compartment. The flange of the second blank member extends to the front side and extends in the vehicle width direction, and the flange of the second blank member extends to the vehicle body front side at the lower end portion of the dash panel upper disposed on the upper side of the dash panel lower. A flange extending in the direction, and the flange of the third blank member is located on the vehicle body front side at the upper end portion of the dash panel reinforcement having a hat-shaped cross section that is attached to the vehicle interior side of the dash panel lower so as to extend in the vehicle width direction. And a flange extending in the vehicle width direction.

  According to the joining structure of the blank material flange according to claim 1 of the present application, the flange of the third blank material sandwiched via the adhesive between the flange of the first blank material and the flange of the second blank material, A plurality of protruding surfaces for welding joined to the flange of the first blank material and the flange of the second blank material by an adhesive and spot welding, and the flange of the first blank material and the flange of the second blank material by an adhesive A deformation suppressing protrusion surface portion to be joined is provided, and the deformation suppressing protrusion surface portion is provided in a state of being separated between the welding protrusion surface portions in the longitudinal direction of the flange of the third blank material.

  As a result, the adhesive can be accumulated between the protruding surface portion for welding and the protruding surface portion for suppressing deformation at the time of spot welding, so that the adhesive does not change the flange at the time of spot welding without changing the shape of the flange of the blank material on both sides. In addition to being able to suppress protruding from between, even when deflection occurs in one of the flanges of the first blank material and the second blank material between the welds during spot welding, by the deformation suppression protruding surface portion, Compared to the case where no protrusion for suppressing deformation is provided, it is possible to suppress deformation in the direction of reducing the deflection after spot welding of the flange where the deflection has occurred. Can be prevented from protruding.

  Moreover, after joining the flange of a blank material with an adhesive agent and spot welding, when temperature rising drying of electrodeposition coating is given, it can suppress that an adhesive protrudes from between flanges after electrodeposition coating. Therefore, it can suppress that an electrodeposition coating peels off with the protrusion of an adhesive agent, and can suppress that rust generate | occur | produces on a flange.

  Moreover, according to the invention which concerns on Claim 2 of this application, as the protrusion surface part for a deformation | transformation suppression goes to the outward side of the flange of a 3rd blank material, among the flanges of a 1st blank material and the flange of a 2nd blank material By being provided so as to approach the flange side where the deflection due to spot welding is large, deformation of the flange after spot welding can be more effectively suppressed, and the above-described effect can be more effectively achieved.

  Further, according to the invention of claim 3 of the present application, the flange of the first blank member is a flange extending in the vehicle width direction and extending in the vehicle width direction at the upper end portion of the dash panel lower, and the flange of the second blank member Is a flange extending in the vehicle width direction at the lower end of the dash panel upper and extending in the vehicle width direction, and the flange of the third blank member is a cross-section attached to the vehicle compartment side of the dash panel lower so as to extend in the vehicle width direction A flange extending in the vehicle width direction at the upper end of the hat-shaped dash panel reinforcement and extending in the vehicle width direction allows a dash through an adhesive between the dash panel lower flange and the dash panel upper flange. Panel reinforcement flanges are sandwiched and spotted When joined by a tangent, it is possible to effectively obtain the effect.

It is the perspective view which showed the dash panel lower and dash panel reinforcement of the vehicle body provided with the joining structure of the blank material flange which concerns on embodiment of this invention from the vehicle body back. It is the perspective view which showed the dash panel lower and dash panel upper of the vehicle body provided with the joining structure of the blank material flange which concerns on embodiment of this invention from the vehicle body front. It is a perspective view which shows typically the dash panel reinforcement shown in FIG. It is sectional drawing of a dash panel lower, a dash panel upper, and a dash panel reinforcement including the cross section along the Y4-Y4 line | wire in FIG. It is sectional drawing of a dash panel lower, a dash panel upper, and a dash panel reinforcement including the cross section along the Y5-Y5 line | wire in FIG. It is sectional drawing of a dash panel lower, a dash panel upper, and a dash panel reinforcement including the cross section along the Y6-Y6 line | wire in FIG. It is explanatory drawing for demonstrating the joining structure of the blank material flange which concerns on another embodiment of this invention. FIG. 8 is a cross-sectional view taken along line Y8a-Y8a and line Y8b-Y8b in FIG. It is explanatory drawing for demonstrating joining by the adhesive agent and spot welding of the flange of two blank materials. It is explanatory drawing for demonstrating the protrusion of the adhesive agent from between the flanges after spot welding.

  Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

  FIG. 1 is a perspective view showing a dash panel lower and a dash panel reinforcement of a vehicle body provided with a blank material flange joint structure according to an embodiment of the present invention from the rear of the vehicle body, and FIG. 2 shows an embodiment of the present invention. FIG. 3 is a perspective view schematically showing the dash panel reinforcement shown in FIG. 1. FIG. 3 is a perspective view schematically showing the dash panel lower and the dash panel upper of the vehicle body having the blank material flange joining structure. .

  4 is a cross-sectional view of a dash panel lower, a dash panel upper, and a dash panel reinforcement including a cross section taken along line Y4-Y4 in FIG. 3, and FIG. 5 is taken along line Y5-Y5 in FIG. FIG. 6 is a cross-sectional view of a dash panel lower, a dash panel upper, and a dash panel reinforcement including a cross section, FIG. 6 is a dash panel lower, a dash panel upper, and a dash panel including a cross section taken along line Y6-Y6 in FIG. It is sectional drawing of reinforcement.

  As shown in FIGS. 1 and 2, a vehicle body 1 having a blank material flange joint structure according to an embodiment of the present invention includes an engine room in which a drive source such as an engine is disposed and a vehicle compartment. A dash panel 2 that divides in a direction is disposed on the front side of the passenger compartment. The dash panel 2 is disposed on a dash panel lower 10 disposed on the lower side of the vehicle body and on the vehicle body upper side of the dash panel lower 10. And a dash panel upper 20.

  The dash panel lower 10 includes a vertical wall surface portion 11 extending in a direction substantially orthogonal to the vehicle body front-rear direction and a flange 12 extending substantially horizontally from the upper end portion of the vertical wall surface portion 11 to the vehicle body front side. The flange 12 of the lower 10 is formed to extend in the vehicle width direction while extending to the front side of the vehicle body.

  On the other hand, the dash panel upper 20 includes an inclined wall surface portion 21 that extends toward the vehicle body upper side toward the vehicle body rear side, and a flange 22 that extends from the lower end portion of the inclined wall surface portion 21 to the vehicle body front side in a substantially horizontal direction. The flange 22 of the dash panel upper 20 extends to the front side of the vehicle body and extends in the vehicle width direction, and an end portion of the front side of the vehicle body is inclined to the upper side of the vehicle body.

  As shown in FIGS. 5 and 6, the dash panel upper 20 includes a cowl outer panel disposed on the upper side of the vehicle body, with the end of the inclined wall surface portion 21 extending toward the rear side of the vehicle body extending in a substantially horizontal direction. 3 and a cowl inner panel 4 disposed on the cowl outer panel 3 on the vehicle body lower side. A windshield 6 is attached to the cowl outer panel 3 via an adhesive 5.

  In the vehicle body 1, a dash panel reinforcement 30 extending in the vehicle width direction is attached to the dash panel lower 10, specifically, on the vehicle interior side of the vertical wall surface portion 11. The dash panel reinforcement 30 includes a vertical surface portion 31 that extends in a direction substantially orthogonal to the longitudinal direction of the vehicle body. The vertical surface portion 31 is provided with a bulging portion 32 that bulges in a U-shaped cross section toward the passenger compartment. It is formed in a hat shape.

  In this embodiment, the dash panel reinforcement 30 also includes a flange 33 that extends from the upper end of the vertical surface portion 31 to the front side of the vehicle body in a substantially horizontal direction. The flange 33 of the dash panel reinforcement 30 is provided on the front side of the vehicle body. And so as to extend in the vehicle width direction.

  The flange 33 of the dash panel reinforcement 30 is also provided between the flange 12 of the dash panel lower 10 and the flange 22 of the dash panel upper 20, as shown in FIGS. The adhesive 7 is sandwiched between the flange 22 and the flange 22.

  As shown in FIG. 3, the flange 33 of the dash panel reinforcement 30 is also provided with a plurality of projecting surface portions 34 and 35 that project toward the vehicle body front side toward the outer side of the flange 33. Specifically, a first projecting surface portion 34 formed in a substantially trapezoidal shape and a second projecting surface portion 35 formed in a substantially triangular shape are provided, and the second projecting surface portion 35 is the longitudinal direction of the flange 33. It is provided between the first projecting surface portions 34 in the vehicle width direction so as to be separated from the first projecting surface portions 34.

  In the present embodiment, the flange 33 of the dash panel reinforcement 30 is connected to the flange 12 of the dash panel lower 10 and the flange 22 of the dash panel upper 20 at the first projecting surface portion 34 provided on the flange 33 of the dash panel reinforcement 30. And the adhesive 7 and spot welding. In FIG. 3, a portion 37 where spot welding is performed in the dash panel reinforcement 30 is indicated by a circle.

  On the other hand, the second projecting surface portion 35 provided on the flange 33 of the dash panel reinforcement 30 is disposed at the approximate center between the first projecting surface portions 34 that are spot welded in the longitudinal direction of the flange 33 and is spot welded. Instead, as shown in FIG. 5, the adhesive 12 is joined to the flange 12 of the dash panel lower 10 and the flange 22 of the dash panel upper 20.

  In addition, between the 1st protrusion surface part 34 provided in the flange 33 of the dash panel reinforcement 30 and the 2nd protrusion surface part 35, as shown in FIG. 6, the flange 12 of the dash panel lower 10 and the dash panel upper 20 are shown. The flange 22 is joined by the adhesive 7.

  When joining the flange 12 of the dash panel lower 10 thus configured, the flange 22 of the dash panel upper 20 and the flange 33 of the dash panel reinforcement 30, first, the flange of the dash panel lower 10 is joined. 12 and the flange 12 of the dash panel upper 20, the flange 33 of the dash panel reinforcement 30 is interposed between the flange 12 of the dash panel lower 10 and the flange 22 of the dash panel upper 20. Arrange them so that they are pinched.

  Then, as shown in FIG. 4, welding is performed by performing spot welding by pressing the flange 22 of the dash panel upper 20 with the movable electrode 42 while holding the flange 12 of the dash panel lower 10 with the fixed electrode 41. A portion SW is formed, and the flange 12 of the dash panel lower 10 and the flange 22 of the dash panel upper 20 are joined by the adhesive 7 and spot welding via the flange 33 of the dash panel reinforcement 30. In FIG. 4, it is described that the adhesive 7 remains between the flange 22 and the flange 33 and between the flange 33 and the flange 12 of the spot weld SW, but this is in the middle of spot welding. After the spot welding, the adhesive 7 between the flange 22 and the flange 33 and between the flange 33 and the flange 12 is eliminated, and the flange 22, the flange 33, and the flange 12 are removed by the nugget. Be joined.

  When spot welding is performed by pressing the flange 22 of the dash panel upper 20 with the movable electrode 42 in a state where the flange 12 of the dash panel lower 10 is held by the fixed side electrode 41, as described above, the welded portion SW is formed at the flange 22. In this embodiment, the flange 33 of the dash panel reinforcement 30 is sandwiched between the flange 12 of the dash panel lower 10 and the flange 22 of the dash panel upper 20. Since a plurality of first projecting surface portions 34 spot-welded to the flange 33 and a second projecting surface portion 35 that is not spot welded are provided between the first projecting surface portions 34, the second projecting surface portion 35 generates the flange 22. Deformation in a direction where the deflection is reduced after spot welding, that is, downward of the vehicle body It is possible to suppress that.

  In the present embodiment, in the flange 33 of the dash panel reinforcement 30, one second projecting surface portion 35 is provided between the two first projecting surface portions 34 adjacent to each other in the longitudinal direction of the flange 33. It is also possible to provide a plurality of second projecting surfaces 35 between two first projecting surface portions 34 adjacent to each other in the longitudinal direction.

  Further, spot welding is performed by pressing the flange 22 of the dash panel upper 20 with the movable electrode 42 in a state where the flange 12 of the dash panel lower 10 is held by the fixed electrode 41. Alternatively, spot welding may be performed by pressing the flange 12 of the dash panel lower 10 with the movable side electrode in a state where the fixed side electrode is held.

  In this case, due to the second projecting surface portion 35 provided on the flange 33 of the dash panel reinforcement 30, the deflection generated in the flange 12 pressed by the movable electrode between the welded portions SW is reduced after spot welding. Deformation can be suppressed. As described above, the second projecting surface portion is provided so as to suppress deformation of the flanges 12 and 22 of either the dash panel lower 10 or the dash panel upper 20.

  Thus, in this embodiment, the dash panel lower 30 is attached to the flange 33 of the dash panel reinforcement 30 sandwiched between the flange 12 of the dash panel lower 10 and the flange 22 of the dash panel upper 20 via the adhesive 7. A plurality of first projecting surface portions 34 joined to the flange 12 of the tenth flange 12 and the flange 22 of the dash panel upper 20 by the adhesive 7 and spot welding, the flange 12 of the dash panel lower 10 and the flange 22 of the dash panel upper 20 A second projecting surface portion 35 is provided to be joined by the adhesive 7, and the second projecting surface portion 35 is separated from the first projecting surface portion 34 in the longitudinal direction of the flange 33 of the dash panel reinforcement 30. Is provided.

  Thereby, since the adhesive 7 can be collected between the 1st protrusion surface part 34 and the 2nd protrusion surface part 35 at the time of spot welding, the adhesive agent 7 is not changed at the time of spot welding, without changing the shape of the flanges 12 and 22 on both sides. Can be prevented from protruding from between the flanges 12 and 22, and the deflection 12 or 22 of either the dash panel lower 10 or the dash panel upper 20 is caused between the welds SW during spot welding. Even in the case, the second projecting surface portion 35 suppresses deformation in the direction of reducing the deflection after spot welding of the flange 12 or 22 where the second projecting surface portion 35 is not provided. It is possible to suppress the adhesive 7 from protruding between the flanges 12 and 22 after spot welding.

  Further, when the electrodeposition coating is performed after the flange 12 of the dash panel lower 10 and the flange 22 of the dash panel upper 20 are joined to the adhesive 7 by spot welding, from between the flanges 12 and 22 after the electrodeposition coating. Since it can suppress that the adhesive agent 7 protrudes, it can suppress that an electrodeposition coating peels off with the protrusion of the adhesive agent 7, and can suppress that rust generate | occur | produces on a flange.

  In the present embodiment, the case where the flange 12 of the dash panel lower 10, the flange 22 of the dash panel upper 20, and the flange 33 of the dash panel reinforcement 30 are joined by the adhesive 7 and spot welding is described. However, in the pillar extending in the vertical direction of the vehicle body, the flange provided in the vehicle longitudinal direction of the pillar reinforcement is sandwiched between the flange provided in the vehicle longitudinal direction of the pillar inner and the flange provided in the vehicle longitudinal direction of the pillar outer. The present invention can be applied to the case where the flanges of a plurality of blank materials are joined together by an adhesive and spot welding, such as when joining together by an adhesive and spot welding.

  In the above-described embodiment, the first projecting surface portion 34 and the second projecting surface portion 35 are provided in the substantially horizontal direction in the flange 33 of the dash panel reinforcement 30. It is also possible to provide an inclination so as to approach the flange 22 side of the dash panel upper 20 as it goes outward.

  FIG. 7 is an explanatory diagram for explaining a joining structure of a blank material flange according to another embodiment of the present invention, and FIG. 7 includes a joining structure of a blank material flange according to another embodiment of the present invention. The dash panel reinforcement of the car body is shown schematically. 8 is a cross-sectional view taken along line Y8a-Y8a and line Y8b-Y8b in FIG. 7 and 8, the dash panel reinforcement shown in FIG. 3 is indicated by a two-dot chain line.

  Further, another embodiment of the present invention is formed so as to be inclined with respect to the embodiment described above and the second projecting surface portion provided on the flange 33 of the dash panel reinforcement so as to approach the flange 22 side of the dash panel upper 20. Since it is the same except that, it attaches | subjects the same code | symbol about the same structure, and abbreviate | omits description.

  As shown in FIG. 7, also in the dash panel reinforcement 50 according to another embodiment of the present invention, the flange 33 of the dash panel reinforcement 50 has a vehicle body front side toward the outer side of the flange 33. A first protruding surface portion 34 that protrudes and is formed in a substantially trapezoidal shape, and a second protruding surface portion 55 that protrudes toward the vehicle body front side toward the outer side of the flange 33 and is formed in a substantially triangular shape are provided, The second projecting surface portion 55 is provided between the first projecting surface portions 34 in the vehicle width direction, which is the longitudinal direction of the flange 33, while being separated from the first projecting surface portion 34. The panel upper 20 is formed so as to be inclined toward the flange 22 side.

  As shown in FIG. 8A, the first projecting surface portion 34 provided on the flange 33 of the dash panel reinforcement 50 is formed so as to extend in the substantially horizontal direction toward the front side of the vehicle body. ), The second projecting surface portion 55 provided on the flange 33 of the dash panel reinforcement 50 is inclined toward the upper side of the vehicle body toward the outer side of the flange 33, and the flange 22 side of the dash panel upper 20. It is provided to be inclined so as to approach.

  The second projecting surface portion 55 is a movable side electrode when spot welding is performed by pressing the flange 22 of the dash panel upper 20 with the movable side electrode 42 while holding the flange 12 of the dash panel lower 10 on the fixed side electrode 41. In the flange 22 pressed by 42, a deflection occurs between the welded parts SW. Therefore, the flange 22 of the dash panel upper 20 is formed to be inclined so as to approach the flange 22 side where the deflection occurs. When the spot welding is performed by pressing the flange 12 of the dash panel lower 10 with the movable side electrode in a state of being held in, the deflection between the welds SW occurs in the flange 12 pressed by the movable side electrode. To approach the flange 12 side where deflection occurs as it goes outward of the flange 33 Inclined to be formed.

  As described above, the second projecting surface portion 55 provided on the flange 33 of the dash panel reinforcement 50 is, of the flange 12 of the dash panel lower 10 and the flange 22 of the dash panel upper 20, toward the outer side of the flange 33. By being inclined so as to approach the flange 12 or 22 side where the deflection due to spot welding is large, deformation of the flange 12 or 22 after spot welding can be more effectively suppressed, and the flanges 12 and 22 after spot welding can be suppressed more effectively. It can suppress more effectively that the adhesive agent 7 protrudes from between.

  It should be noted that the present invention is not limited to the illustrated embodiment, and it goes without saying that various improvements and design changes can be made without departing from the scope of the present invention.

  As described above, according to the present invention, it is possible to suppress the adhesive from protruding between the flanges during spot welding, and to suppress the adhesive from protruding between the flanges after spot welding. A material flange joining structure can be provided, which may be suitably used in the field of manufacturing the vehicle body.

2 Dash panel 7 Adhesive 10 Dash panel lower (first blank)
12 Dash panel lower flange (first blank flange)
20 Dash panel upper (second blank)
22 Dash panel upper flange (2nd blank flange)
30, 50 Dash panel reinforcement (third blank)
33 Dash panel reinforcement flange (3rd blank flange)
34 First projecting surface (welding projecting surface)
35, 55 Second projecting surface (deformation suppressing projecting surface)

Claims (3)

A blank material flange joining structure formed by joining a plurality of blank material flanges by adhesive and spot welding,
In a state in which an adhesive is provided between the flange of the first blank member and the flange of the second blank member, between the flange of the first blank member and between the flange of the second blank member. The blank flange is sandwiched,
The flange of the third blank member protrudes toward the outer side of the flange of the third blank member and is bonded to the flange of the first blank member and the flange of the second blank member by an adhesive and spot welding. A plurality of welding protruding surface portions to be joined, projecting outward of the flange of the third blank material, and joined to the flange of the first blank material and the flange of the second blank material by an adhesive. And a deformation-suppressing protruding surface portion that suppresses deformation of one of the flanges of the first blank material and the second blank material,
The deformation suppressing protruding surface portion is provided in a state of being separated between the welding protruding surface portions in the longitudinal direction of the flange of the third blank material.
A blank material flange joining structure characterized by the above. As the deformation-suppressing protruding surface portion moves toward the outer side of the flange of the third blank material, the flange side of the first blank material and the flange of the second blank material approach the flange side where the deflection due to spot welding is large. So as to be inclined,
The joining structure of the blank material flange according to claim 1. The flange of the first blank material is a flange that extends in the vehicle width direction and extends in the vehicle width direction at the upper end portion of the dash panel lower disposed on the vehicle front side,
The flange of the second blank material is a flange that extends in the vehicle front side and extends in the vehicle width direction at the lower end portion of the dash panel upper disposed on the upper side of the dash panel lower,
The flange of the third blank member extends to the front side of the vehicle body and extends in the vehicle width direction at the upper end portion of the dash panel reinforcement having a hat-shaped cross section that is attached to the cabin side of the dash panel lower so as to extend in the vehicle width direction. An extending flange,
The joint structure of the blank material flange according to claim 1 or 2, wherein

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