JP2014218160A - Coupling structure of member - Google Patents

Abstract

The present invention provides a member coupling structure capable of improving the rigidity of a coupling portion even if a curved portion is formed at the coupling side end portion of the one side member to be coupled. A rear end opening 30B of a crash box 30 is formed with a projecting portion 34 projecting toward the curved portions 26A and 26C in the front end opening 16B of the front side member 16. The overhanging portion 34 is abutted against the curved surface on the radially outer side of the bending diameter in the bending portions 26A and 26C. The abutting surface 34A of the overhanging portion 34 has a surface shape along a curved surface on the radially outer side of the bending portions 26A and 26C. [Selection] Figure 1

Description

  The present invention relates to a connecting structure for members.

  A structure in which end portions of members are coupled to each other is known (for example, see Patent Documents 1 and 2). For example, Patent Document 1 below discloses a technique related to an exhaust pipe joint structure for joining ends of exhaust pipes. According to this technique, a tapered end portion is formed at the end of one exhaust pipe, and a male flange is fixed to the end of the other exhaust pipe. The tapered portion is sandwiched between the flange. And the edge part of an exhaust pipe is couple | bonded by the bolt fastening of a male type flange and a female type flange.

JP-A-2005-120966 Special table 2010-524754

  However, in the case of the above prior art, the curved portion that connects the pipe main body portion and the taper portion in one exhaust pipe is not in contact with either the end of the other exhaust pipe or the male flange. When a load acts in the opposite direction, one of the exhaust pipes is easily deformed starting from the curved portion.

  In view of the above facts, the present invention provides a member coupling structure that can improve the rigidity of the coupling portion even if a curved portion is formed at the coupling-side end portion of the one-side member to be coupled. Is the purpose.

  The member coupling structure of the present invention described in claim 1 includes a panel main body portion and a flat plate-like first alignment portion that extends from the panel main body portion via a curved portion, and the first alignment is performed. A first member in which a surface continuous with a curved surface on the radially outer side of the curved portion is a mating surface, a member main body portion having one end disposed adjacent to the radially outer side of the curved portion, and the member main body A flat plate-like second mating portion that is integrally formed continuously with the mating portion and overlapped and joined to the mating surface of the first mating portion, and the member main body portion includes the curved portion. A projecting portion projecting to the side is formed, and the projecting portion has a surface shape along at least a part of the curved surface on the radially outer side of the curved portion and abutted against the at least part A second member having a surface.

  According to the above configuration, the first member is formed with the flat plate-like first mating portion that extends from the panel main body via the curving portion, and the first mating portion has a curved surface on the radially outer side of the curving portion. Continuous surfaces are mating surfaces. In contrast, in the second member, one end of the member main body portion is disposed adjacent to the radially outer side of the curved portion, and a flat plate-like second mating portion that is integrally formed continuously with the member main body portion is the first member. It is overlapped and joined to the mating surface of the mating part. Here, the member main body portion of the second member is formed with an overhanging portion that protrudes toward the bending portion, and the abutment surface of the overhanging portion is at least a part of the curved surface on the radially outer side of the bending portion. And is abutted against at least a part thereof. For this reason, even if a load for locally deforming the bending portion toward the second member is input, at least a part of the bending portion receives a resistance force from the abutting surface side of the second member. The deformation of the curved portion is suppressed.

  According to a second aspect of the present invention, there is provided the member connecting structure according to the first aspect, wherein the panel body portion of the first member includes a flat first flat wall portion continuous with the curved portion. The member main body portion of the second member is a flat plate-like second flat wall arranged in series in a direction perpendicular to the plate thickness direction with respect to the first flat wall portion and continuing from the protruding portion. At least a part of the projecting portion is extended from the second flat wall portion side toward the first flat wall portion side, and the curved portion has a curved surface on the radially outer side. It is abutted in a range between the first flat wall portion and the second flat wall portion.

  According to the said structure, the panel main-body part in a 1st member is equipped with the flat 1st flat wall part which continues to a curved part, and the member main-body part in a 2nd member continues to an overhang | projection part, and is 1st. A flat plate-like second flat wall portion arranged in series in a direction perpendicular to the thickness direction of the flat wall portion is provided. Here, at least a part of the overhanging portion extends from the second flat wall portion side toward the first flat wall portion side, and the first flat wall portion of the curved surface on the radially outer side of the bending portion is It is abutted in a range between the second flat wall portion. For this reason, when a load is input in the series direction of the first flat wall portion and the second flat wall portion with respect to one of the first flat wall portion and the second flat wall portion, the load is the first flat wall portion. And is transmitted linearly to the other side of the second flat wall portion. Therefore, load concentration on the curved portion is avoided.

  According to a third aspect of the present invention, there is provided the member connecting structure according to the first or second aspect of the present invention, in the configuration according to the first or second aspect, between the first mating portion and the second mating portion and radially outside the curved portion. An adhesive layer made of an adhesive is interposed in the entire area between the curved surface and the abutting surface.

  According to the above configuration, an adhesive layer made of an adhesive is interposed between the first mating portion and the second mating portion and between the curved surface and the abutting surface on the radially outer side of the curved portion. Therefore, the relative displacement between the curved portion and the abutting surface is effectively prevented or suppressed during load input. Moreover, even if the first member and the second member are formed of different metal materials, electrolytic corrosion is prevented.

  According to a fourth aspect of the present invention, there is provided the member connecting structure according to any one of the first to third aspects, wherein the first member is a counter wall portion in which the panel body portion is a pair. And an end on the second member side of the pair of opposing wall portions is continuous with the curved portion, respectively, and a curved surface on the radially outer side of the curved portion is directed to the second member side. The second member is configured to include an extension of the projecting portion and include a second opening that opens toward the first member. In addition, the second opening enters from the inside of the first opening to the inside of the pair of opposing walls, and the extension surface of the abutting surface is in contact with the opposing surface of the pair of opposing walls. ing.

  According to the above configuration, the second opening of the second member enters from the inner side of the first opening of the first member to the inner side of the opposing wall that is a pair of the first member and is opposed to the opposing wall that is a pair. The extended surface of the abutting surface is in contact with the surface. For this reason, a load can be transmitted between the extended surface side of the abutting surface and the opposed surface side of the opposed wall portion.

  According to a fifth aspect of the present invention, there is provided the member connecting structure according to any one of the first to fourth aspects, wherein the first member is a first corner formed in a rectangular cylindrical shape. A cylindrical portion, wherein the first rectangular tubular portion includes at least a part of the panel main body portion and the curved portion, and has a curved surface radially outward of the curved portion on the second member side. A first rectangular opening that opens toward the second member, wherein the member main body portion of the second member includes a second rectangular tubular portion formed in a rectangular tubular shape, and the second rectangular tubular portion Is configured to include a second rectangular opening that is arranged to face the first rectangular opening and includes a long side portion and a short side portion, and the long side portion and the short side in the second rectangular opening portion. The protruding portion is formed only on one of the portions.

  According to the said structure, the 1st rectangular opening part in the 1st square cylindrical part of a 1st member has opened the curved surface of the radial direction outer side of a curved part toward the 2nd member side, The second rectangular opening in the second rectangular tube portion is disposed opposite to the first rectangular opening in the first rectangular tube portion of the first member. Here, since the overhang part provided with the abutting surface is formed only on one of the long side part and the short side part in the second rectangular opening, the arrangement position of the curved part of the first member is manufactured. Even if the long side portion and the short side portion are shifted due to the error, the manufacturing error is absorbed.

  As described above, according to the member coupling structure according to claim 1 of the present invention, even if a curved portion is formed at the coupling-side end portion of the one-side member to be coupled, It has an excellent effect that the rigidity can be improved.

  According to the member coupling structure according to claim 2, load transmission between the first flat wall portion side and the second flat wall portion side can be improved, and a bending moment is generated starting from the curved portion. It has the outstanding effect that it can prevent or suppress effectively.

  According to the member coupling structure according to claim 3, local deformation at the curved portion can be further stably suppressed, and when the second member is formed of a metal material different from that of the first member. Since it is possible to prevent the occurrence of electrolytic corrosion, there is an excellent effect that the degree of freedom in selecting the material of the second member can be increased.

  According to the member coupling structure of the fourth aspect, there is an excellent effect that the load transmission in a plurality of directions can be made possible.

  According to the member coupling structure according to claim 5, even if there is a manufacturing error in the curved portion of the first member, an excellent effect that the first member and the second member can be easily coupled. Have.

It is a perspective view of the half section which shows the joint structure of the member concerning a 1st embodiment of the present invention. It is a disassembled perspective view which shows the vehicle body front part with which the joint structure of the member shown in FIG. 1 was applied. It is a perspective view of the half section which shows the joint structure of the member concerning a 2nd embodiment of the present invention. It is a perspective view of the half section which shows the joint structure of the member concerning a 3rd embodiment of the present invention. FIG. 5A is a half-sectional perspective view showing a contrast structure. FIG. 5B is a cross-sectional view showing a state in which an adhesive is applied at the time of joining members in the contrast structure of FIG. FIG. 5C is a cross-sectional view showing a state in which the first member has moved in the abutting direction from the state of FIG.

[First Embodiment]
1st Embodiment of the coupling | bonding structure of the member which concerns on this invention is described using FIG.1 and FIG.2. In these drawings, the arrow FR indicates the vehicle front side, the arrow UP indicates the vehicle upper side, and the arrow IN indicates the vehicle width direction inner side.

  FIG. 2 is an exploded perspective view showing a part of the vehicle body front portion 12 to which the member coupling structure 10 according to the present embodiment is applied. Further, FIG. 1 shows a member coupling structure 10 in a half sectional perspective view. In addition, the cross section of FIG. 1 is corresponded to the expanded cross section along the 1-1 line | wire of FIG.

  As shown in FIG. 2, a long front bumper reinforcement 14 is disposed at the front end of the vehicle body with the vehicle width direction as a longitudinal direction. The front bumper reinforcement 14 is a high-strength member, and a front bumper cover (not shown) is attached to the front side thereof.

  The front bumper reinforcement 14 is connected to a front side member 16 as a first member via a crash box 30 as a second member disposed on the rear side of both ends in the vehicle width direction. In the drawing, the outer shape of the front bumper reinforcement 14 is indicated by a two-dot chain line, and the front end portion of the crash box 30 is shown in a state where the front bumper reinforcement 14 is seen through. The front side member 16 is a high-strength member disposed on both sides of the vehicle body front portion 12 with the vehicle front-rear direction as the longitudinal direction.

  The front side member 16 includes a front side member outer 18 disposed on the outer side in the vehicle width direction, and a front side member inner 20 disposed adjacent to the inner side in the vehicle width direction of the front side member outer 18. The front side member outer 18 and the front side member inner 20 are manufactured by press forming a steel plate. The front side member outer 18 is a flat panel member (sheet metal part) in which an outer panel main body portion 18A as a first flat wall portion extends along the vehicle vertical direction and the vehicle front-rear direction. On the other hand, the front side member inner 20 is a long panel member (sheet metal part) that is cut along the vehicle vertical direction and the vehicle width direction and has a hat shape when viewed from the front side of the vehicle. is there.

  The front side member inner 20 is disposed such that the open side faces the outside in the vehicle width direction, and includes an upper wall portion 22A, a side wall portion 22B, and a lower wall portion 22C. The upper wall portion 22A as the first flat wall portion forms a substantially horizontal upper surface of the front side member inner 20. Further, the side wall portion 22B as the first flat wall portion is bent and suspended from the inner end in the vehicle width direction of the upper wall portion 22A, and is arranged in parallel with the outer panel main body portion 18A. Further, the lower wall portion 22C as the first flat wall portion is bent from the lower end portion of the side wall portion 22B and extends outward in the vehicle width direction, is disposed in parallel with the upper wall portion 22A, and the front side member inner. 20 constitutes the lower surface. The upper wall portion 22 </ b> A, the side wall portion 22 </ b> B, and the lower wall portion 22 </ b> C are all flat and constitute the inner panel main body portion 22. Further, the upper wall portion 22A and the lower wall portion 22C constitute a pair of opposing wall portions, and the side wall portion 22B and the outer panel main body portion 18A constitute a pair of opposing wall portions.

  An upper flange portion 24A is formed at the upper end portion of the front side member inner 20 and is bent from the outer end portion of the upper wall portion 22A in the vehicle width direction and extends toward the vehicle upper side. On the other hand, a lower flange portion 24B is formed at the lower end portion of the front side member inner 20 and is bent from the outer end portion of the lower wall portion 22C in the vehicle width direction and extends to the vehicle lower side. The upper flange portion 24A and the lower flange portion 24B are spot welded to end portions in the vertical direction of the outer panel main body portion 18A of the front side member outer 18. As a result, the front side member outer 18 and the front side member inner 20 are integrated to form a front side member 16 having a closed cross-sectional structure (elements grasped as “tubular member” and “vehicle frame member” in a broad sense). Is formed). Further, in the present embodiment, the front side member main body portion 16H as the panel main body portion is configured including the outer panel main body portion 18A, the inner panel main body portion 22, the upper flange portion 24A, and the lower flange portion 24B.

  At the upper end of the front side member inner 20 described above, an inner side upper flange 28A is formed as a first mating portion that is bent from the front end of the upper wall portion 22A of the front side member inner 20 and extends toward the vehicle upper side. ing. That is, the upper wall portion 22A of the front side member main body portion 16H has an end on the crash box 30 side continuous with the curved portion 26A, and the inner side upper flange 28A is connected to the upper wall portion of the front side member main body portion 16H. It extends from 22A via the curved portion 26A. As shown in FIG. 1, the curved portion 26A is a portion that is curved from the front end of the upper wall portion 22A toward the vehicle upper side, which is one side in the thickness direction of the upper wall portion 22A. The inner-side upper flange 28A is a flat plate-like portion that extends in the vehicle upward direction from the end of the curved portion 26A opposite to the upper wall portion 22A. The inner side upper flange 28A has a mating surface that is a surface continuous with the curved surface on the radially outer side of the curved portion 26A (a surface directed toward the vehicle front side).

  Further, as shown in FIG. 2, the side portion of the front side member inner 20 is bent as a first mating portion that is bent from the front end of the side wall portion 22B of the front side member inner 20 and extends inward in the vehicle width direction. Inner side side flange 28B is formed. That is, the side wall portion 22B of the front side member main body portion 16H has an end portion on the crash box 30 side continuous to the curved portion 26B, and the inner side side flange 28B is connected to the side wall portion 22B of the front side member main body portion 16H. To the curved portion 26B. The curved portion 26B is a portion that is curved from the front end of the side wall portion 22B toward the inner side in the vehicle width direction, which is one side in the thickness direction of the side wall portion 22B. Further, the inner side side flange 28B is a flat plate-like portion extending inward in the vehicle width direction from the end of the curved portion 26B opposite to the side wall 22B. The inner side side flange 28B has a mating surface that is a surface (surface directed toward the vehicle front side) continuous with the curved surface on the radially outer side of the curved portion 26B.

  Further, an inner side lower flange 28C is formed at the lower end portion of the front side member inner 20 as a first mating portion that is bent from the front end of the lower wall portion 22C of the front side member inner 20 and extends toward the vehicle lower side. ing. That is, the lower wall portion 22C of the front side member main body portion 16H has an end portion on the crash box 30 side continuous with the curved portion 26C, and the inner side lower flange 28C is connected to the lower wall portion of the front side member main body portion 16H. It extends from 22C through a bending portion 26C. As shown in FIG. 1, the curved portion 26 </ b> C is a portion that is curved from the front end of the lower wall portion 22 </ b> C toward the vehicle lower side that is one side in the thickness direction of the lower wall portion 22 </ b> C. Further, the inner side lower flange 28C is a flat plate-like portion extending from the end of the curved portion 26C opposite to the lower wall portion 22C toward the vehicle downward direction. The inner side lower flange 28 </ b> C has a mating surface that is a surface continuous with the radially outer curved surface of the curved portion 26 </ b> C (a surface directed toward the vehicle front side).

  As shown in FIG. 2, the front end of the front side member outer 18 is a first mating portion that is bent from the front end of the vertical middle portion of the outer panel main body 18 </ b> A and extends outward in the vehicle width direction. An outer side side flange 18C is formed. That is, the outer panel main body portion 18A of the front side member main body portion 16H has the end portion on the crash box 30 side continuous to the curved portion 18B, and the outer side side flange 18C is the outer panel main body portion of the front side member main body portion 16H. It extends from the portion 18A through the curved portion 18B. The curved portion 18B is a portion curved from the front end of the outer panel main body portion 18A toward the outer side in the vehicle width direction, which is one side in the thickness direction of the outer panel main body portion 18A. Further, the outer side side flange 18C is a flat plate-like portion extending outward in the vehicle width direction from the end of the curved portion 18B opposite to the outer panel body 18A. The outer side side flange 18C has a mating surface that is a surface (surface directed toward the vehicle front side) continuous with the curved surface on the radially outer side of the curved portion 18B.

  Note that the curved shapes in cross-sectional view of the curved portions 26B and 18B shown in FIG. 2 are the same as the curved shapes of the curved portions 26A and 26C shown in FIG.

  As shown in FIG. 2, the front side member 16 includes a first square tubular portion 16A configured to include a part of the front side member main body portion 16H and the curved portions 26A, 26B, 26C, and 18B. . More specifically, the first rectangular tubular portion 16A includes the upper wall portion 22A, the side wall portion 22B, the lower wall portion 22C, the curved portions 26A, 26B, and 26C, and the front side member outer 18 of the front side member inner 20. The outer panel main body portion 18A is formed in a rectangular cylindrical shape by the middle portion in the vertical direction and the curved portion 18B. And the cylinder axis direction of 16 A of 1st square cylindrical parts of the front side member 16 is set so that the vehicle front-back direction may be followed. A front end opening 16B is formed in the first rectangular tubular portion 16A of the front side member 16 as a first opening that opens toward the front side of the vehicle and as a first rectangular opening. Further, the front end opening 16B opens the curved portions 26A, 26B, 26C, 18B on the radially outer curved surface toward the crash box 30 side.

  Inner side upper flange 28 </ b> A, inner side side flange 28 </ b> B, inner side lower flange 28 </ b> C, and outer side side flange 18 </ b> C of front side member 16 are for connection to crash box 30. The crash box 30 is made of a light alloy casting (made of an aluminum alloy as an example), and its main body has a rectangular tube shape and is arranged so as to be continuous with the front side member 16 in the vehicle front-rear direction. The crush box 30 is an element grasped as a “tubular member” and an “impact absorbing member” in a broad sense.

  The crash box 30 includes a crash box main body portion 32 as a member main body portion having a rear end (one end) disposed adjacent to the radially outer side of the curved portions 26A, 26B, 26C, and 18B of the front side member 16. . The crash box main body 32 is disposed on the front side of the vehicle with respect to the inner panel main body 22, the outer panel main body 18A, and the curved portions 26A, 26B, 26C, and 18B of the front side member 16. The crash box main body 32 includes a second rectangular cylindrical portion 30A formed in a rectangular cylindrical shape. The cylinder axis direction of the second rectangular cylindrical portion 30A of the crash box 30 is set along the vehicle front-rear direction. The second rectangular tubular portion 30A is arranged to face the front end opening 16B of the front side member 16 and includes a long side portion (vertical side portion in the present embodiment) and a short side portion (lateral side portion in the present embodiment). A rear end opening 30B as a second rectangular opening is formed.

  The second rectangular tubular portion 30A of the crash box main body portion 32 includes an upper wall portion 32A, side wall portions 32B and 32C, and a lower wall portion 32D. The upper wall portion 32 </ b> A as the second flat wall portion forms a substantially horizontal upper surface of the crash box main body portion 32. Further, the side wall portions 32B and 32C as the second flat wall portions are suspended from both end portions in the vehicle width direction of the upper wall portion 32A to form substantially vertical side surfaces. Further, the lower wall portion 32D as the second flat wall portion is arranged in parallel with the upper wall portion 32A by connecting the lower end portions of the pair of left and right side wall portions 32B and 32C, and forms the lower surface of the crash box main body portion 32. doing. The upper wall portion 32A, the pair of left and right side wall portions 32B and 32C, and the lower wall portion 32D are all formed in a flat plate shape.

  The upper wall portion 32A of the crash box main body portion 32 is disposed in series with the upper wall portion 22A of the front side member inner 20 on the vehicle front side in the direction orthogonal to the plate thickness direction. Are set equal. Further, the side wall portion 32B of the crash box main body portion 32 is disposed in series with the side wall portion 22B of the front side member inner 20 on the vehicle front side in the direction orthogonal to the plate thickness direction. Are set equal. Further, the side wall portion 32C of the crash box main body portion 32 is arranged in series with the outer panel main body portion 18A of the front side member outer 18 on the vehicle front side in the direction orthogonal to the plate thickness direction. The thickness is set equal. Furthermore, the lower wall portion 32D of the crash box main body portion 32 is arranged in series with the lower wall portion 22C of the front side member inner 20 on the vehicle front side in the direction orthogonal to the plate thickness direction. The plate thickness is set equal. The upper wall portion 32A, the side wall portions 32B and 32C, and the lower wall portion 32D are all continuous with an overhang portion 34 (see FIG. 1) described in detail later.

  A plurality of beads (fragile portions) 38 serving as compression buckling starting points are formed in the crash box main body portion 32. Further, the front end portion of the crash box main body portion 32 is a front wall portion 36 that closes the second rectangular tubular portion 30A. The front wall portion 36 is coupled to the front bumper reinforcement 14 by bolt fastening. In addition, illustration of the bolt insertion hole of the front wall portion 36 is omitted.

  On the other hand, on the outer peripheral side of the rear end opening 30B of the crash box main body 32, a flange portion 40 is formed as a flat and rectangular frame-shaped second mating portion. The flange portion 40 is formed integrally with the crash box main body portion 32 continuously. The flange portion 40 of the crash box 30 is overlapped and bonded to each mating surface of the inner side upper flange 28A, the inner side side flange 28B, the inner side lower flange 28C, and the outer side side flange 18C of the front side member 16. Are combined.

  Further, as shown in FIG. 1, the second rectangular tubular portion 30A of the crash box main body portion 32 has an overhanging portion 34 that protrudes toward the curved portions 26A, 26C, 26B, and 18B (see FIG. 2). Is formed. That is, the overhang portion 34 is set on the front side member 16 side with respect to the rear surface position of the flange portion 40.

  The overhang portion 34 includes an abutting surface 34A. The abutting surface 34A has a surface shape along the entire area of the curved surface outside the radial direction of the curved portions 26A, 26C, 26B, and 18B (see FIG. 2), and is abutted against the entire area. In the upper part of the crash box 30, the overhanging portion 34 extends from the upper wall portion 32 </ b> A side of the crash box main body portion 32 toward the upper wall portion 22 </ b> A side of the front side member inner 20. Of the curved surface on the outer side in the radial direction of 26A, a portion that is abutted in a range between the upper wall portion 32A of the crash box main body portion 32 and the upper wall portion 22A of the front side member inner 20 is included. Further, in the lower part of the crash box 30, the projecting portion 34 extends from the lower wall portion 32 </ b> D side of the crash box main body portion 32 toward the lower wall portion 22 </ b> C side of the front side member inner 20, and is a curved portion. Of the curved surface on the radially outer side of 26 </ b> C, a portion that is abutted in a range between the lower wall portion 32 </ b> D of the crash box main body portion 32 and the lower wall portion 22 </ b> C of the front side member inner 20 is included.

  Similarly, in the side part in the vehicle width direction of the crash box 30 shown in FIG. 2, the overhang part 34 (see FIG. 1) extends from the side wall part 32 </ b> B side of the crash box body part 32 to the front side member inner 20. Of the curved portion 26B in a range between the side wall portion 32B of the crash box main body portion 32 and the side wall portion 22B of the front side member inner 20. It contains the part that was abutted. Further, at the side portion of the crash box 30 on the outer side in the vehicle width direction, the overhanging portion 34 (see FIG. 1) extends from the side wall portion 32C side of the crash box main body portion 32 to the outer panel main body portion 18A of the front side member outer 18. Of the curved portion 18B in the radial direction, and abutted against a range between the side wall portion 32C of the crash box main body portion 32 and the outer panel main body portion 18A of the front side member outer 18. Contains parts.

  Further, the inner side upper flange 28A, the inner side side flange 28B, the inner side lower flange 28C, the outer side side flange 18C of the front side member 16 and the flange 40 of the crash box 30 and the front side member 16 Between the curved surfaces 26A, 26B, 26C and 18B of the curved portions 26A, 26B, 26C, and 18B and the abutting surface 34A of the crash box 30 shown in FIG. 42 is interposed. As the adhesive forming the adhesive layer 42, a known structural adhesive (for example, a synthetic resin adhesive such as an epoxy resin adhesive) is applied.

  In addition, the inner surface 34B facing the inward side of the crash box 30 in the overhanging portion 34 is set on the same plane as the inner surface of the crash box main body portion 32, and is substantially flush with the inner surface of the front side member main body portion 16H. Is set to The rear end opening 30B of the crash box 30 is in contact with the inside of the front end opening 16B of the front side member 16, and the abutting surface 34A described above is formed in the rear end opening 30B.

(Action / Effect)
Next, the operation and effect of the above embodiment will be described.

  As described above, the crash box main body portion 32 of the crash box 30 is formed with an overhang portion 34 that projects toward the curved portions 26A, 26C, 26B, and 18B (see FIG. 2). The abutting surface 34A of the overhanging portion 34 has a surface shape along the entire area of the curved surface on the radially outer side of the bending portions 26A, 26C, 26B, and 18B (see FIG. 2) and is abutted against the entire area. . Therefore, for example, even when a load for locally deforming the bending portions 26A, 26C, 26B, and 18B (see FIG. 2) toward the crash box 30 is input during a vehicle collision or the like, the bending portions 26A, Since 26C, 26B, and 18B (refer FIG. 2) receive resistance from the abutting surface 34A side of the crash box 30, the deformation | transformation of curved part 26A, 26C, 26B, 18B (refer FIG. 2) is suppressed.

  In the present embodiment, the upper portion of the front side member main body portion 16H includes a flat upper wall portion 22A continuous to the rear lower end of the curved portion 26A, and the upper portion of the crash box main body portion 32 includes an overhang portion. 34 and a flat plate-like upper wall portion 32A arranged in series in a direction perpendicular to the plate thickness direction with respect to the upper wall portion 22A of the front side member main body portion 16H. Here, in the upper part of the crash box 30, the overhanging portion 34 extends from the upper wall portion 32 </ b> A side of the crash box main body portion 32 toward the upper wall portion 22 </ b> A side of the front side member inner 20 and curves. The portion of the curved surface on the radially outer side of the portion 26A includes a portion that is abutted against the range between the upper wall portion 32A of the crash box main body portion 32 and the upper wall portion 22A of the front side member inner 20. For this reason, for example, when a collision load F directed toward the rear side of the vehicle is input to the crash box 30 at the time of a frontal collision of the vehicle, a part of the load is transferred from the upper wall portion 32A of the crash box main body portion 32 to the front. The axial force is transmitted linearly to the side of the upper wall portion 22A of the side member main body portion 16H. Accordingly, the loss of load transmission between the upper wall portion 32A of the crash box main body portion 32 and the upper wall portion 22A of the front side member main body portion 16H is reduced, and the load transmission is made efficient. Then, load concentration on the bending portion 26A is avoided.

  Similarly, part of the load at the time of a frontal collision of the vehicle is linearly transmitted as an axial force from the lower wall portion 32D of the crash box main body portion 32 to the lower wall portion 22C side of the front side member main body portion 16H. Further, a part of the load at the time of a frontal collision of the vehicle is linearly transmitted as an axial force from the side wall portion 32B of the crash box main body portion 32 shown in FIG. 2 to the side wall portion 22B side of the front side member main body portion 16H. At the same time, the axial force is linearly transmitted from the side wall 32C of the crash box main body 32 to the outer panel main body 18A side of the front side member main body 16H.

  As a result, the load transmission from the crash box 30 side shown in FIG. 1 to the front side member 16 side at the time of a frontal collision is improved. Further, the generation of a bending moment starting from the bending portions 26A, 26C, 26B, 18B (see FIG. 2) is prevented or effectively suppressed.

  Here, the setting of the overhang part 34 provided with the abutting surface 34 </ b> A will be supplementarily described in comparison with the comparison structure. The first contrast structure here is made of a sheet metal in which the crash box is bent, and the bonding material is between the curved portion on the front side member side of the crash box and the curved portion on the crash side of the front side member. The structure is filled with (for example, an adhesive or solder). Further, in the second contrast structure, another part is arranged instead of the bonding material of the first contrast structure, and the separate part is a curved part on the front side member side in the crash box, and the crash box in the front side member. The structure is joined to the curved portion on the side. In the first and second contrast structures, if the bonding material or another part is peeled off or deformed when the collision load is input, the load transferability is lowered. In the case of the second contrast structure, if the Young's modulus of another part is low, the deformation of the other part becomes large when a collision load is input, and a bending moment starting from the curved portion is generated. In this case, the deformation direction of the crash box and the front side member is deviated from a desired direction.

  On the other hand, in this embodiment, since the overhang | projection part 34 is integrally shape | molded as a part of crash box 30, it does not peel off like said 1st, 2nd contrast structure, and is deformed. It is hard to do. Therefore, in the member coupling structure 10 according to the present embodiment, the generation of a bending moment is prevented or effectively suppressed, and the load transmission is good. Further, in the present embodiment, the number of parts is reduced as compared with the second contrast structure.

  On the other hand, in the present embodiment, the inner side upper flange 28A, the inner side side flange 28B, the inner side lower flange 28C, the outer side side flange 18C and the flange portion of the crash box 30 of the front side member 16 shown in FIG. 40 and between the curved surface 26A, 26B, 26C, 18B of the front side member 16 (curved diameter) on the radially outer side and the abutting surface 34A of the crash box 30 (see FIG. 1). The adhesive layer 42 shown in FIG. 1 is interposed in the entire area. For this reason, the relative displacement between the bending portions 26A, 26C, 26B, and 18B (see FIG. 2) and the abutting surface 34A is effectively prevented or suppressed during load input. Therefore, local deformation at the curved portions 26A, 26C, 26B, and 18B can be more stably suppressed. Further, since the adhesive layer 42 made of an adhesive is interposed between the front side member 16 and the crash box 30, the front side member 16 and the crash box 30 are made of different metal materials as in the present embodiment. Even if formed, electrolytic corrosion is prevented.

  Thereby, the freedom degree of the material selection of the crash box 30 is raised. And a light weight can be achieved by applying a light alloy to the crash box 30 like this embodiment.

  Here, the setting of the adhesive layer will be supplementarily described in comparison with other contrast structures. The contrast structure here includes a first metal member 100 shown in FIG. 5A and a second member 110 formed of a metal material different from the first member 100. And The first member 100 includes a flat plate-like first flat plate portion 102, and the second member 110 is arranged in series with respect to the first flat plate portion 102 in a direction orthogonal to the plate thickness direction. And a second flat plate portion 112 that is abutted with the second flat plate portion 112. Further, the second flat plate portion 112 protrudes in an L shape from the back surface of the end portion on the first flat plate portion 102 side to the first flat plate portion 102 side. The extending portion 114 is extended. In this contrast structure, the abutting direction of the first flat plate portion 102 and the second flat plate portion 112 is the fitting direction (arrow K direction) during assembly and the first flat plate portion 102. The adhesive 120 is interposed between the abutting end surfaces of the first flat plate portion 112 and the opposing surface of the extended portion 114 and the back surface of the first flat plate portion 102.

  In such a comparison structure, in the assembling process, first, as shown in FIG. 5 (B), the first flat plate portion 102 is part of the extended portion 114 with respect to the second member 110. The adhesive 120 is applied to the surface 114A that will face the back surface. Thereafter, as shown in FIG. 5C, the fitting direction (in the direction of the arrow K), that is, the first end 102A of the first flat plate portion 102 is set along the bonding surface of the extending portion 114. The end surface 102T of the flat plate portion 102 is moved in a direction to abut against the end surface 112A of the second flat plate portion 112. At this time, the surface side of the adhesive 120 applied on the extended portion 114 is scraped off by the abutting end surface 102T of the first flat plate portion 102. Therefore, for example, if the first member 100 is relatively displaced with respect to the second member 110 in a state where the back surface of the first flat plate portion 102 and the bonding surface of the extending portion 114 are very close to each other, The agent 120 is scraped off more than necessary.

  On the other hand, in the case of the present embodiment, for example, if the crush box 30 is moved in the abutting direction with respect to the front side member 16 shown in FIG. Since force is generally applied in the thickness direction, scraping of the adhesive can be suppressed. Therefore, the front side member 16 and the crash box 30 are bonded in a suitable state.

  As described above, according to the member coupling structure 10 according to the present embodiment, the curved portions 26A, 26C, 26B, and 18B (on the coupling side end of the front side member 16 (one member to be coupled) ( Even if formed (see FIG. 2), the rigidity and strength of the coupling portion can be improved. That is, the press-processed sheet metal part has a curved portion that is a curved portion for molding reasons. However, even if such a curved portion is set on the side to be coupled, according to the present embodiment, a highly rigid coupling structure is provided. Can be realized.

  In addition, by realizing a highly rigid coupling structure, it is possible to suppress the plate thickness of the front side member 16 and the crash box 30. And if plate | board thickness is restrained, further weight reduction will be implement | achieved.

  Note that when the crash box 30 is assembled to the front side member 16, the curved surface on the radially outer side of the curved portion 26A, 26C, 26B, 18B (see FIG. 2) can be used as the guide surface. That is, when the crash box 30 is assembled, the projecting tip portion of the overhang portion 34 is a curved surface on the vehicle front side of the curved portions 26A, 26C, 26B, 18B (see FIG. 2) (that is, a curved surface radially outward of the curved diameter). By applying, the protruding portion 34 may be slid and guided to the assembly position with the curved surface as a guide surface.

[Modification of First Embodiment]
Next, a modification of the first embodiment of the present invention will be described with reference to FIGS. 1 and 2. As a modification of the first embodiment, the crush box (30) has an overhang portion (34) formed only on the short side portion (opening upper side portion and opening lower side portion) of the rear end opening portion (30B). Also good. As another modification of the first embodiment, the crush box (30) has a protruding portion (only on the long side portion (opening left side portion and opening right side portion)) in the rear end opening portion (30B) ( 34) may be formed.

  According to these modified examples, even if the arrangement position of the curved portion (26A, 26C, 26B, 18B) of the front side member (16) is shifted between the long side portion and the short side portion due to the manufacturing error, the manufacturing error is caused. Is absorbed. Therefore, even if there is a manufacturing error as described above, the front side member (16) and the crash box (30) can be easily combined.

[Second Embodiment]
Next, a member coupling structure according to the second embodiment of the present invention will be described with reference to FIG. FIG. 3 shows a member coupling structure 50 according to the second embodiment in a perspective view of a half section (a view corresponding to FIG. 1 in the first embodiment). As shown in this figure, the member coupling structure 50 is different from the member coupling structure 10 (see FIG. 1) according to the first embodiment in that the member coupling structure 50 includes an extension 56A of the overhanging portion 56. Other configurations are substantially the same as those of the first embodiment. Therefore, components that are substantially the same as those of the first embodiment are denoted by the same reference numerals and description thereof is omitted.

  As shown in FIG. 3, the crash box 52 is a crash as a member main body having a rear end (one end) disposed adjacent to the radially outer side of the curved portions 26 </ b> A, 26 </ b> C, 26 </ b> B, 18 </ b> B (see FIG. 2). A box body 54 is provided. The crash box main body 54 is thicker than the plate thickness of the front side member main body 16H except for the point provided with the extension 56A of the overhang 56 and the plate thickness except for a part of the extension 56A and the like of the overhang 56. Except for the set points, the configuration is the same as that of the crash box main body 32 in the first embodiment. The crash box main body portion 54 and the flange portion 40 are integrally formed.

  The crash box main body portion 54 of the crash box 52 includes a second rectangular tube portion 52A formed in a rectangular tube shape. The cylinder axis direction of the second rectangular tube portion 52A of the crash box main body 54 is set along the vehicle longitudinal direction, and the second rectangular tube portion 52A is the first rectangular tube shape of the front side member 16. It is arranged in series with the part 16A. The second rectangular tubular portion 52A of the crash box 52 is provided with an extension portion 56A of the overhang portion 56, and serves as a second opening portion that opens toward the front side member 16 and as a second rectangular opening portion. An end opening 52B is included. The rear end opening 52B is disposed to face the front end opening 16B and includes a long side portion and a short side portion.

  The projecting portion 56 formed in the rear end opening 52B projects toward the curved portions 26A, 26B, 26C, and 18B (see FIG. 2), and is closer to the front side member 16 than the rear surface position of the flange portion 40. Is set to The overhang portion 56 includes an abutting surface 34A. The abutting surface 34A has a surface shape along the entire area of the curved surface on the radially outer side of the curved portions 26A, 26C, 26B, and 18B (see FIG. 2) as in the first embodiment, and is abutted against the entire area. Yes. Further, the inner surface 56C facing the inward side of the crash box 52 in the overhang portion 56 and its extension 56A is set on the same plane as the inner surface of the crash box main body portion 32, and the inner surface of the front side member main body portion 16H. A step is formed between the two.

  The rear end opening 52B of the crash box 52 enters from the inner side of the front end opening 16B of the front side member 16 to the inner side of the upper wall part 22A and the lower wall part 22C that are paired vertically, and the side wall part 22B that forms a pair of left and right sides (see FIG. 2) and the outer panel body 18A (see FIG. 2). Further, the opposing surfaces of the upper wall portion 22A and the lower wall portion 22C that are the upper and lower pairs and the opposing surfaces of the side wall portions 22B (see FIG. 2) and the outer panel main body portion 18A (see FIG. 2) that are the left and right pairs The extended surface 56B of the contact surface 34A is in contact with the polymerized surface. The extended surface 56B is a surface formed in a part of the extended portion 56A of the projecting portion 56 and an extended portion of the abutting surface 34A.

  Further, the adhesive layer 42 has an entire area between the opposing surfaces of the upper wall portion 22A and the lower wall portion 22C that form the upper and lower pairs and the extended surface 56B of the abutting surface 34A, and the side wall portions 22B that form the left and right pairs (see FIG. 2) and the outer panel main body portion 18A (see FIG. 2) and the entire area between the extended surface 56B of the abutting surface 34A.

  Also by the configuration of the present embodiment, the same operations and effects as those of the first embodiment described above can be obtained. Further, in the configuration of the present embodiment, from the side of the extended surface 56B of the abutting surface 34A, the side of the opposing surface of the upper wall 22A and the lower wall 22C that are vertically paired and the side wall 22B that is the left and right pair (FIG. (See FIG. 2) and the outer panel main body 18A (see FIG. 2). Therefore, a load can be transmitted not only in the vehicle front-rear direction but also in a plurality of directions.

[Modification of Second Embodiment]
Next, a modification of the second embodiment will be described. The modification of the second embodiment is the same as that of the second embodiment except for the overhang portion 58 and the extension portion 58A shown by the two-dot chain line in FIG. 3 provided at the rear end portion of the crash box 52. It has a configuration. As shown in FIG. 3, the protruding portion 58 formed in the crash box main body portion 54 protrudes toward the curved portions 26 </ b> A, 26 </ b> B, 26 </ b> C, 18 </ b> B (see FIG. 2), and the rear surface position of the flange portion 40. Rather than the front side member 16 side. The overhang portion 58 includes an abutting surface 34A similar to those in the first and second embodiments. An extension surface 58B, which is a part of the extension portion 58A of the overhang portion 58 and constitutes an extension portion of the abutting surface 34A, is an opposing surface of the upper wall portion 22A and the lower wall portion 22C that form a pair of upper and lower sides and a pair of left and right sides. The side wall portion 22B (see FIG. 2) and the outer panel main body portion 18A (see FIG. 2) are separated from each other.

  Also by the configuration of the present embodiment, the same operations and effects as those of the first embodiment described above can be obtained. When the crash box 52 is assembled, the curved surface 26A, 26C, 26B, 18B (see FIG. 2) is an extension of the abutting surface 34A with the curved surface on the vehicle front side (that is, the curved surface radially outward of the curved diameter) as a guide surface. It is also possible to slide the surface 58B. If positioning is performed in this manner, the assembling property is improved.

  As another modification of the second embodiment of the present invention, the crush box (52) has a protruding portion only on the short side (opening upper side and opening lower side) of the rear end opening (52B). (56, 58) and its extension (56A, 58A) may be formed. Furthermore, as another modified example, the crush box (30) includes an overhanging portion (56, 58) only on a long side portion (opening left side portion and opening right side portion) of the rear end opening portion (30B) and its Extension parts (56A, 58A) may be formed. According to these modified examples, the same effect as the modified example of the first embodiment can be obtained.

[Third Embodiment]
Next, a member coupling structure according to a third embodiment of the present invention will be described with reference to FIG. 4 shows a part of a rocker (also referred to as a “side sill”) 62 to which the member coupling structure 60 according to the third embodiment is applied. As in the first and second embodiments, the arrow FR shown in FIG. 4 indicates the vehicle front side, the arrow UP indicates the vehicle upper side, and the arrow IN indicates the vehicle width direction inner side. ing.

  The rocker 62 is arranged on the lower edge side of the side door opening of the vehicle with the longitudinal direction of the vehicle as a longitudinal direction, and is also grasped as a vehicle skeleton member (“tubular member”) having a closed cross-sectional structure extending in the longitudinal direction of the vehicle. Element). The rocker 62 includes a rocker inner panel 64 serving as a first member disposed on the inner side in the vehicle width direction, and a rocker outer panel serving as a second member disposed on the outer side in the vehicle width direction of the rocker inner panel 64 (“Rocky reinforcement”). 72). Although not shown, the lower end portion of the side outer panel that covers the rocker outer panel 72 from the outside in the vehicle width direction also constitutes a part of the rocker 62.

  The rocker inner panel 64 is a long panel member (sheet metal part) manufactured by press-molding a steel plate, and is a longitudinal section viewed from the front side of the vehicle by cutting along the vehicle vertical direction and the vehicle width direction. The visual shape is a hat shape.

  The rocker inner panel 64 is disposed such that the open side faces the outside in the vehicle width direction, and includes an upper wall portion 66A, a side wall portion 66B, and a lower wall portion 66C. The upper wall portion 66 </ b> A forms the upper surface of the rocker inner panel 64. Further, the side wall portion 66B is bent from the end portion on the inner side in the vehicle width direction of the upper wall portion 66A and hangs down to form a side surface of the rocker inner panel 64. Further, the lower wall portion 66C is bent from the lower end portion of the side wall portion 66B and extends obliquely downward toward the outer side in the vehicle width direction, and forms the lower surface of the rocker inner panel 64. The upper wall portion 66A, the side wall portion 66B, and the lower wall portion 66C are all flat and constitute an inner panel main body 66 as a panel main body.

  An upper flange portion 70A is formed at the upper end portion of the rocker inner panel 64 as a first mating portion that is bent from the outer end portion of the upper wall portion 66A in the vehicle width direction and extends toward the vehicle upper side. That is, the upper wall portion 66A of the inner panel main body portion 66 has an end on the rocker outer panel 72 side continuous to the curved portion 68A, and the upper flange portion 70A is curved from the upper wall portion 66A of the inner panel main body portion 66. It extends through part 68A. The curved portion 68A is a portion that is curved toward the vehicle upper side, which is one side in the thickness direction of the upper wall portion 66A, from the outer end portion of the upper wall portion 66A in the vehicle width direction. Further, the upper flange portion 70A is a flat plate-like portion extending in the vehicle upward direction from the end portion of the curved portion 68A opposite to the upper wall portion 66A side. The upper flange portion 70A has a mating surface that is a surface continuous with a curved surface on the radially outer side of the curved portion 68A (a surface directed outward in the vehicle width direction).

  A lower flange portion 70B is formed at the lower end portion of the rocker inner panel 64 as a first mating portion that is bent from the outer end portion of the lower wall portion 66C in the vehicle width direction and extends toward the vehicle lower side. That is, the lower wall portion 66C of the inner panel main body portion 66 has an end on the rocker outer panel 72 side continuous to the curved portion 68B, and the lower flange portion 70B is bent from the lower wall portion 66C of the inner panel main body portion 66. It extends through part 68B. The curved portion 68B is a portion that is curved from the end of the lower wall portion 66C on the outer side in the vehicle width direction toward the vehicle lower side, which is one side in the thickness direction of the lower wall portion 66C. Further, the lower flange portion 70B is a flat plate-like portion extending downward from the end of the curved portion 68B opposite to the lower wall portion 66C side. The lower flange portion 70B has a mating surface that is a surface continuous with the radially outer curved surface of the curved portion 68B (a surface directed outward in the vehicle width direction).

  The upper flange portion 70 </ b> A and the lower flange portion 70 </ b> B in the rocker inner panel 64 are for coupling to the rocker outer panel 72. The rocker outer panel 72 is made of a light alloy casting (made of an aluminum alloy as an example), and is cut along the vehicle vertical direction and the vehicle width direction so that the shape of the vertical sectional view viewed from the vehicle front side is the rocker inner panel 64. Is a hat shape that is opposite to the left and right.

  The rocker outer panel 72 includes an outer panel main body portion 74 as a member main body portion in which one end on the inner side in the vehicle width direction is arranged adjacent to the radially outer side of the curved portions 68A and 68B of the rocker outer panel 72. The outer panel main body 74 is disposed on the outer side in the vehicle width direction with respect to the inner panel main body 66 and the curved portions 68A and 68B. The outer panel main body 74 includes an upper wall portion 74A, a side wall portion 74B, and a lower wall portion 74C. The upper wall portion 74 </ b> A forms the upper surface of the rocker outer panel 72. Further, the side wall portion 74B is suspended from the outer end portion of the upper wall portion 74A in the vehicle width direction and forms a substantially vertical side surface. Further, the lower wall portion 74C extends from the lower end portion of the side wall portion 74B to the obliquely lower side in the vehicle width direction, and forms the lower surface of the rocker outer panel 72. The upper wall portion 74A, the side wall portion 74B, and the lower wall portion 74C are all formed in a flat plate shape.

  At the upper end of the rocker outer panel 72, an upper flange portion 78A is formed as a flat plate-like second mating portion. The upper flange portion 78A of the rocker outer panel 72 is formed continuously and integrally with the outer panel main body portion 74, and is overlapped with and bonded to the mating surface of the upper flange portion 70A of the rocker inner panel 64.

  In addition, a protruding portion 80 that protrudes toward the curved portion 68 </ b> A is formed on the upper portion of the outer panel main body 74. The overhang portion 80 is set on the rocker inner panel 64 side of the inner surface of the upper flange portion 78A in the vehicle width direction. The overhang 80 has an abutment surface 80A. The abutting surface 80A has a surface shape along the entire area of the curved surface on the radially outer side of the curved portion 68A and is abutted against the entire area. Further, between the upper flange portion 70 </ b> A of the rocker inner panel 64 and the upper flange portion 78 </ b> A of the rocker outer panel 72, the radially outer curved surface of the curved portion 68 </ b> A of the rocker inner panel 64, and the abutting surface 80 </ b> A of the rocker outer panel 72. An adhesive layer 82 made of an adhesive is interposed in the entire area.

  On the other hand, a lower flange portion 78B as a flat plate-like second mating portion is formed at the lower end portion of the rocker outer panel 72. The lower flange portion 78B of the rocker outer panel 72 is formed continuously and integrally with the outer panel main body portion 74, and is overlapped with and bonded to the mating surface of the lower flange portion 70B of the rocker inner panel 64.

  Further, a projecting portion 84 projecting toward the curved portion 68B is formed at the lower portion of the outer panel main body 74. The overhang portion 84 is set closer to the rocker inner panel 64 than the inner surface of the lower flange portion 78B in the vehicle width direction. The overhang portion 84 includes an abutting surface 84A. The abutting surface 84A has a surface shape along the entire area of the curved surface on the radially outer side of the curved portion 68B and is abutted against the entire area. Further, between the lower flange portion 70 </ b> B of the rocker inner panel 64 and the lower flange portion 78 </ b> B of the rocker outer panel 72, the radially outer curved surface of the curved portion 68 </ b> B of the rocker inner panel 64, and the abutting surface 84 </ b> A of the rocker outer panel 72. An adhesive layer 86 made of an adhesive is interposed in the entire area. As the adhesive forming the adhesive layers 82 and 86, a known structural adhesive (for example, a synthetic resin adhesive such as an epoxy resin adhesive) is applied as in the first embodiment. Yes.

  As described above, the opening 72 </ b> A on the inner side in the vehicle width direction of the rocker outer panel 72 enters and contacts the inner side of the opening 64 </ b> A on the outer side in the vehicle width direction of the rocker inner panel 64. The abutting surfaces 80A and 84A described above are formed in the opening 72A of the rocker outer panel 72.

  According to the above configuration, for example, even when a load for locally deforming the upper and lower curved portions 68A and 68B of the rocker inner panel 64 toward the rocker outer panel 72 is input during a side collision, the curved portions 68A and 68B are input. Since resistance force is received from the abutting surfaces 80A and 84A side of the rocker outer panel 72, deformation of the curved portions 68A and 68B is suppressed. Accordingly, the bending moment acting on the rocker inner panel 64 from the curved portions 68A and 68B is suppressed.

  In the present embodiment, adhesive layers 82 and 86 are interposed in the entire area between the facing joint portions of the rocker outer panel 72 and the rocker inner panel 64. For this reason, the relative displacement between the curved portions 68A and 68B and the abutment surfaces 80A and 84A is effectively prevented or suppressed during load input. Therefore, local deformation at the curved portions 68A and 68B can be more stably suppressed. Further, since the adhesive layers 82 and 86 made of adhesive are interposed between the rocker inner panel 64 and the rocker outer panel 72, the rocker inner panel 64 and the rocker outer panel 72 are different from each other as in this embodiment. Even if it is formed of a metal material, electrolytic corrosion is prevented.

  As described above, according to the member coupling structure 60 according to the present embodiment, the curved portions 68A and 68B are formed at the coupling-side end of the rocker inner panel 64 (one member to be coupled). In addition, the rigidity and strength of the coupling portion can be improved.

[Supplementary explanation of the embodiment]
The first member may be a member in which a plurality of panels are coupled like the front side member 16 in the first and second embodiments, or the rocker inner panel in the third embodiment. The member comprised by one panel like 64 may be sufficient.

  Further, as a modification of the above embodiment, the first member is, for example, a panel member having a substantially U-shaped cross section and a U-shaped bottom portion formed into a flat plate shape, and the panel main body portion being U-shaped on both sides. Other first members may be used such that the mating portion is a U-shaped bottom.

  As a modification of the above embodiment, the second member is another second member such as a member made of a resin material or a member made of a composite material in which fibers (for example, carbon fibers) are solidified with resin. It may be.

  As a modification of the above embodiment, the abutting surfaces (34A, 80A, 84A) formed on the second member (crash box 30, rocker outer panel 72) are curved portions (26A, 26B, 26C, 18B, 68A). , 68B) may have a surface shape along only a part of the curved surface on the radially outer side and may be abutted against the part.

  Further, as a modification of the first and second embodiments, the overhanging portion is formed from the second flat wall portion (upper wall portion 32A, side wall portion 32B, side wall portion 32C, lower wall portion 32D) from the first flat wall portion side. A curved surface (26A, 26B, 26C, 18B) radially outwardly extended toward the wall (upper wall 22A, side wall 22B, lower wall 22C, and outer panel main body 18A) side. Among them, the first flat wall portion (upper wall portion 22A, side wall portion 22B, lower wall portion 22C, and outer panel main body portion 18A) and the second flat wall portion (upper wall portion 32A, side wall portion 32B, side wall portion 32C, lower wall portion) 32D).

  As another modification, the overhanging portion is formed from the second flat wall portion (upper wall portion 32A, side wall portion 32B, side wall portion 32C, lower wall portion 32D) from the first flat wall portion (upper wall portion 22A). The first flat wall portion (of the radially outer curved surface of the curved portion (26A, 26B, 26C, 18B) extended toward the side wall portion 22B, the lower wall portion 22C, and the outer panel main body portion 18A). 22A between the upper wall portion 22A, the side wall portion 22B, the lower wall portion 22C, and the outer panel main body portion 18A) and the second flat wall portion (the upper wall portion 32A, the side wall portion 32B, the side wall portion 32C, and the lower wall portion 32D). It may be abutted against the range and abutted against a part of another curved surface on the radially outer side of the curved portion (26A, 26B, 26C, 18B).

  Further, as another modification, the overhanging portion includes a first flat wall portion (upper wall portion 22A, side wall portion 22B, lower wall portion) of the curved surface (26A, 26B, 26C, 18B) on the radially outer side. 22C and the outer panel main body portion 18A) and the second flat wall portion (upper wall portion 32A, side wall portion 32B, side wall portion 32C, lower wall portion 32D) may not be abutted against each other.

  As a modification of the first and second embodiments, the first member and the second member may be formed in a polygonal cylindrical shape other than a rectangle.

  Further, as a modification of the above-described embodiment, a first mating portion (an inner side upper flange 28A, an inner side side flange 28B, an inner side lower flange 28C, an outer side side flange 18C, an upper flange portion 70A, a lower flange portion 70B). ) And the second mating portion (the flange portion 40, the upper flange portion 78A, the lower flange portion 78B), and the curved portion (26A, 26B, 26C, 18B, 68A, 68B) on the radially outer curved surface. An adhesive layer made of an adhesive may be interposed between the surfaces (34A, 80A, 84A), or an adhesive layer made of an adhesive may not be interposed. In the case of these modifications, the first mating part (the inner side upper flange 28A, the inner side side flange 28B, the inner side lower flange 28C, the outer side side flange 18C, the upper flange part 70A, the lower flange part 70B) and the first The two joining portions (the flange portion 40, the upper flange portion 78A, and the lower flange portion 78B) may be bolted.

  Further, as a modification of the above-described embodiment, a concave groove portion is formed in the second mating portion (the flange portion 40, the upper flange portion 78A, the lower flange portion 78B) and the curved portion (26A, 26B, 26C, 18B, 68A, 68B). May be. With such a structure, leakage of the adhesive is prevented or effectively suppressed.

  As a modification of the above embodiment, the radius of curvature of the abutting surface (34A, 80A, 84A) is larger than the radius of curvature of the curved surface outside the radial direction of the curved portion (26A, 26B, 26C, 18B, 68A, 68B). Alternatively, the structure may be set slightly smaller. Even with such a structure, leakage of the adhesive is prevented or effectively suppressed. In addition, the concept of “along the curved surface on the radially outer side of the curved portion” according to claim 1 is the same as the above-described embodiment in that the curved surface has a constant distance from the curved surface on the radially outer side of the curved portion. In addition to the case of along the curved surface, the distance between the curved portion and the radially outer curved surface is slightly changed while the distance from the curved portion on the radially outer side of the curved portion is slightly changed. The case where it is grasped that the action and effect substantially the same as that along the curved surface is obtained while keeping constant and that the curved surface is along the curved surface outside in the radial direction is also included.

  Further, as a modification of the third embodiment, an extension portion of the projecting portion (80, 84) formed in the opening portion (72A) on the inner side in the vehicle width direction of the rocker outer panel (72) may be provided. In this case, the opening on the inner side in the vehicle width direction of the rocker outer panel (72) is the upper wall portion (the opposing wall portion that is a pair of upper and lower walls from the inner side of the opening (72A) on the inner side in the vehicle width direction of the rocker outer panel (72) 66A) and the lower wall portion (66C) enter the inside, and even if the extended surfaces of the abutment surfaces (80A, 84A) are in contact with the opposing surfaces of the upper wall portion (66A) and the lower wall portion (66C) that are paired vertically Good.

  Further, the first rectangular tube-shaped portion may be configured to include the entire panel main body portion, or may be configured to include a part of the panel main body portion. For example, in the case where a portion that is not in the shape of a rectangular tube (for example, a portion that closes the rectangular tube portion) is formed in a portion of the panel main body opposite to the second member side, the first rectangular tube shape The part is configured to include a part of the panel body part instead of the entire panel body part.

  Furthermore, as a modification of the above-described embodiment, the first member is disposed on the side on which the load input is assumed, and the load is transmitted to the side on which the load is transmitted from the first member when the load is input to the first member. It is good also as a structure by which two members are arrange | positioned.

  In addition, the said embodiment and the above-mentioned some modification can be implemented combining suitably.

  Although an example of the present invention has been described above, the present invention is not limited to the above, and it is needless to say that various modifications can be made without departing from the spirit of the present invention. .

10 Member connection structure 16 Front side member (first member)
16A First square tubular portion 16B Front end opening (first opening, first rectangular opening)
16H Front side member body (panel body)
18A Outer panel body (first flat wall, opposing wall)
18B Bent part 18C Outer side side flange (first mating part)
22A Upper wall (first flat wall, opposing wall)
22B Side wall (first flat wall, opposing wall)
22C Lower wall (first flat wall, opposing wall)
26A bending portion 26B bending portion 26C bending portion 28A inner side upper flange (first mating portion)
28B Inner side flange (first mating part)
28C Inner side lower flange (first mating part)
30 Crash box (second member)
30A Second square cylindrical portion 30B Rear end opening (second rectangular opening)
32 Crash box body (member body)
32A Upper wall (second flat wall)
32B side wall (second flat wall)
32C side wall (second flat wall)
32D Lower wall (second flat wall)
34 Overhang part 34A Abutting surface 40 Flange part (second fitting part)
42 Adhesive layer 50 Member connection structure 52A Second square cylindrical portion 52B Rear end opening (second opening, second rectangular opening)
54 Crash box body (member body)
56 Overhang portion 56A Extension portion 56B Extension surface 58 Overhang portion 60 Member connection structure 64 Rocker inner panel (first member)
66 Inner panel body (panel body)
68A bending portion 68B bending portion 70A upper flange portion (first mating portion)
70B Lower flange part (first mating part)
72 Rocker outer panel (second member)
74 Outer panel body (member body)
78A Upper flange part (second mating part)
78B Lower flange part (second mating part)
80 Overhanging portion 80A Abutting surface 82 Adhesive layer 84 Overhanging portion 84A Abutting surface 86 Adhesive layer

Claims (5)

A panel main body part, and a flat plate-like first mating part extending from the panel main body part via a curved part, wherein the first mating part is a surface continuous with a curved surface on the radially outer side of the curved part A first member having a mating surface;
A member main body portion having one end disposed adjacent to the radially outer side of the bending portion, and a member main body portion that is integrally formed continuously with the member main body portion, and is overlapped and coupled to the mating surface of the first mating portion. A flat plate-like second mating portion, and the member main body portion is formed with an overhang portion projecting toward the curved portion, and the overhang portion is radially outward of the curved portion. A second member having a surface shape along at least a part of the curved surface and having an abutting surface abutted against the at least part;
A connecting structure of members having The panel main body portion in the first member includes a flat first flat wall portion continuous with the curved portion,
The member main body portion of the second member is a flat plate-like second flat wall portion that is continuous with the projecting portion and is arranged in series in a direction perpendicular to the plate thickness direction with respect to the first flat wall portion. With
At least a part of the overhanging portion extends from the second flat wall portion side toward the first flat wall portion side, and the first flat wall among the radially outer curved surfaces of the bending portion. The member coupling structure according to claim 1, wherein the member is abutted in a range between the portion and the second flat wall portion.   Between the first mating portion and the second mating portion and between the curved surface on the radially outer side of the curved portion and the abutting surface, an adhesive layer made of an adhesive is interposed in the entire area. The joint structure of the member of Claim 1 or Claim 2. The first member includes a pair of opposing wall portions that are paired with the panel body portion, and ends of the paired opposing wall portions on the second member side are respectively continuous with the curved portion, A first opening that opens a curved surface radially outward of the curved portion toward the second member;
The second member includes a second opening that includes an extension of the projecting portion and opens toward the first member, and the second opening includes the first opening. The extended surface of the said abutting surface is in contact with the opposing surface of the said opposing wall part which penetrates from the inner side of a part to the inner side of the said opposing wall part which becomes a pair, The any one of Claims 1-3 The connecting structure for members according to Item. The first member includes a first rectangular tube portion formed in a rectangular tube shape, and the first rectangular tube portion includes at least a part of the panel main body portion and the curved portion. And a first rectangular opening that opens a curved surface radially outward of the curved portion toward the second member,
The member main body portion of the second member includes a second rectangular cylindrical portion formed in a rectangular cylindrical shape, and the second rectangular cylindrical portion is disposed to face the first rectangular opening and has a long side. And the overhanging portion is formed only on one of the long side portion and the short side portion in the second rectangular opening portion. The member connecting structure according to any one of claims 1 to 4.

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