JP2017210152A - Joined structure of vehicle body - Google Patents

Abstract

PROBLEM TO BE SOLVED: To protect objects such as peripheral parts in a joined part between a plurality of vehicle body component members by a screw member.SOLUTION: A joined structure of a vehicle body has a plurality of vehicle body component members 16, 22, 30 having joining surface parts 19a, 22, 63, and a screw member 70 joining the vehicle body component members at the joining surface parts 19a, 22, 63. In the joined structure, the vehicle body component member 30 on the tip 76 side of the screw member 70 among the vehicle body component members 16, 22, 30 is provided with a pair of wall parts 61, 67 opposed to each other across a projection part of the screw member 70, which projects from the joining surface part 63 of the vehicle body component member.SELECTED DRAWING: Figure 6

Description

  The present invention relates to a vehicle body joining structure using a screw member, and belongs to the field of vehicle body production technology.

  In recent years, in the automobile production technology field, there has been an increasing demand for weight reduction of the vehicle body in order to further improve the fuel consumption performance. Along with this, lightweight materials such as aluminum-based materials have been used as materials for vehicle body components. The demand for materials is increasing. When a vehicle body is configured by using a light-weight material together with an iron-based material such as a steel material that has been conventionally used, it is necessary to perform bonding between vehicle body constituent members made of different materials.

  Since joining between dissimilar metal materials is difficult by welding, it is generally performed using SPR (self-piercing rivet) or blind rivet.

  Joining by SPR is performed by driving a rivet loaded in the receiver into the metal plate in a state where a plurality of stacked metal plates are sandwiched between the receiver and the die, and expanding the tip of the rivet according to the shape of the die. Done in This bonding method has an advantage that it is not necessary to make a pilot hole in the metal plate, but has a disadvantage that can be applied only when a space for setting the receiver and the die can be secured on both sides of the bonded portion. In addition, rivets may not be driven into a high-strength material such as a high-tensile steel plate (High Ten).

  Joining with a blind rivet is achieved by inserting a rivet attached to the tip of the tool into a pilot hole formed in advance in the metal plate, penetrating from one side of the metal plate to the other, and then drawing the tool into the one side. Then, it is performed by caulking a rivet on the other side of the metal plate. While this joining method has an advantage that joining can be performed by work from one side of the metal plate, there is a drawback that it takes time and effort to make a pilot hole in the metal plate.

  Under such circumstances, it has been studied or put into practical use to join vehicle body constituent members made of different materials using other joining techniques.

  As one type of such a joining technique, Patent Document 1 discloses a technique related to a self-tapping screw member that is screwed while forming screw holes in a plurality of members to be joined that do not have pilot holes.

  The self-tapping screw member disclosed in Patent Document 1 generates frictional heat between the tip portion and the contact surface of the member to be joined by pressing the tip to the member to be joined and rotating at high speed. The surrounding base material is screwed while being plasticized by this heat. When the screw member penetrates the member to be joined, the plasticized base material is extended in the axial direction along the screw member, so that a long screw hole is formed in the axial direction. Strong bonding is possible.

  If this type of joining technique using a screw member is applied to joining between vehicle body constituent members, joining is performed by work from one side of the joined portion without opening a pilot hole in the joined portion of the vehicle body constituting member. In addition, it is possible to firmly join the vehicle body constituent members made of different materials.

Japanese National Patent Publication No. 4-506243

  However, when the above-described screw member is used for joining between the vehicle body constituent members, the sharp tip of the screw member protrudes from the joint portion of the vehicle body constituent member, so that the screw member is disposed around the joint portion. Peripheral parts such as harnesses may come into contact with and damage the tip of the screw member during assembly or maintenance.

  Therefore, an object of the present invention is to protect an object such as a peripheral part at a joint portion between a plurality of vehicle body constituent members by a screw member.

  In order to solve the above-described problems, the vehicle body joining structure according to the present invention is configured as follows.

First, the vehicle body joining structure according to the first aspect of the present invention is as follows.
A vehicle body joining structure having a plurality of vehicle body constituent members having joint surface portions and a screw member for joining these vehicle body constituent members at the joint surface portions,
The vehicle body component member on the distal end side of the screw member among the vehicle body component members is provided with a pair of wall portions opposed to each other with a protruding portion of the screw member protruding from the joint surface portion of the vehicle body component member. Features.

The invention according to claim 2 is the invention according to claim 1,
The vehicle body constituting member on the distal end side of the screw member includes a first side surface portion and a second side surface portion facing each other, a communication surface portion connecting one end portions of the first and second side surface portions, and the first side surface portion. A flange portion extending from the other end portion of the side surface portion to the anti-contact surface portion side and forming the joint surface portion; and a folded portion extending from the flange portion so as to face the first side surface portion;
The pair of wall portions are the first side surface portion and the folded portion.

The invention according to claim 3 is the invention according to claim 1 or 2,
The pair of wall portions are provided so as to overlap the entire length of the protruding portion in a side view of the screw member.

The invention according to claim 4 is the invention according to any one of claims 1 to 3,
The screw member is screwed perpendicularly to the joint surface portion of the vehicle body component member,
The pair of wall portions are provided so as to be inclined with respect to the joint surface portion of the vehicle body constituting member.

Further, the vehicle body joining structure according to the invention described in claim 5 of the present application is:
A vehicle body joining structure having a plurality of vehicle body constituent members having joint surface portions and a screw member for joining these vehicle body constituent members at the joint surface portions,
Of the vehicle body component members, the vehicle body component member on the distal end side of the screw member is provided with a cylindrical wall portion surrounding the distal end portion of the screw member protruding from the joint surface portion of the vehicle body component member. To do.

The invention according to claim 6 is the invention according to any one of claims 1 to 5,
The thickness of the joint surface portion is larger than the thickness of the wall portion.

Furthermore, the vehicle body joining structure according to the invention of claim 7 of the present application is:
A vehicle body joining structure having a plurality of vehicle body constituent members having joint surface portions and a screw member for joining these vehicle body constituent members at the joint surface portions,
Of the vehicle body component members, the vehicle body component member on the distal end side of the screw member is provided with a protrusion protruding from the joint surface portion of the vehicle body component member to the distal end side of the screw member,
The tip of the screw member is located inside the protrusion.

Furthermore, the vehicle body joining structure according to claim 8 of the present application is
A vehicle body joining structure having a plurality of vehicle body constituent members having joint surface portions and a screw member for joining these vehicle body constituent members at the joint surface portions,
A wall that prevents the object from coming into contact with the projecting portion of the screw member projecting from the joint surface portion of the vehicle body constituent member is included in the vehicle body constituent member on the tip side of the screw member of the vehicle body constituent member. A portion is provided.

  First, according to the first aspect of the present invention, since the protruding portion of the screw member protruding from the joint surface portion of the vehicle body component member is sandwiched between the pair of wall portions provided in the vehicle body component member, When assembling parts or during maintenance, the wall portion is interposed between an object such as a peripheral part that approaches the protruding portion of the screw member from the side and the screw member, so that the tip of the screw member Contact with the object is suppressed, and thereby damage to the object can be suppressed.

  According to the second aspect of the present invention, when the flange portion extending from the end of the first side surface portion of the vehicle body constituting member and the other vehicle body constituting member are joined by the screw member, the first surface portion faces the first side surface portion. By providing the folded portion so as to extend from the flange portion, while suppressing the bending deformation of the vehicle body component member in the direction in which the folded portion extends, the folded portion and the first side surface portion are utilized, Since the projecting portion of the screw member projecting from the flange portion is sandwiched, the contact between the peripheral member approaching the projecting portion of the screw member from the side and the tip of the screw member is suppressed. Can be protected.

  According to the invention described in claim 3, since the contact between the protruding portion of the screw member and an object such as a peripheral component approaching from the side thereof is effectively suppressed over the entire length of the protruding portion, the screw member The contact between the tip of the object and the object can be more effectively suppressed.

  According to invention of Claim 4, the protrusion part of the screw member screwed in orthogonally to the joint surface part of a vehicle body structural member is pinched | interposed between a pair of wall part provided in inclination with respect to the joint surface part. Therefore, the contact between the protruding portion of the screw member and an object such as a peripheral component approaching from the side is blocked by the pair of wall portions, so that the contact of the object with the tip of the screw member can be suppressed. Further, when at least one wall portion is provided in an inclined state so as to face the tip portion of the screw member, the wall portion is located between the object approaching the screw member from the tip side and the tip of the screw member. By interposing, the contact of the object with respect to the front-end | tip of a screw member can be suppressed more effectively.

  According to the invention described in claim 5 of the present application, since the tip end portion of the screw member protruding from the joint surface portion of the vehicle body component member is surrounded by the cylindrical wall portion provided in the vehicle body component member, The wall portion is interposed between the screw member and an object such as a peripheral component that approaches the distal end portion of the screw member from the side thereof when assembling or maintaining the component. Moreover, the approach of the object from the front end side with respect to a screw member can be blocked | prevented by the end surface of a wall part. Therefore, the contact between the tip of the screw member and the object is effectively suppressed by the cylindrical wall portion, and thereby damage to the object can be suppressed.

  According to invention of Claim 6, when the thickness of the said joint surface part is larger than the thickness of the said wall part, the increase of the screw allowance between a joint surface part and the screw member which penetrates this can be aimed at. Thus, a plurality of vehicle body constituent members can be firmly joined.

  Furthermore, according to the invention described in claim 7 of the present application, the tip end portion of the screw member protruding from the joint surface portion of the vehicle body constituent member is located inside the protrusion provided to protrude from the joint surface portion in the vehicle body constituent member. Therefore, when assembling or maintaining peripheral parts, the protrusion is interposed between an object such as a peripheral part that approaches the tip of the screw member from the side or the tip side and the tip of the screw member. The Accordingly, the contact between the tip of the screw member and the object is effectively suppressed by the protrusions, and thus damage to the object can be suppressed.

  Still further, according to the invention described in claim 8 of the present application, during the assembly or maintenance of parts in the peripheral portion of the joint surface portion of the vehicle body component member, with respect to the projecting portion of the screw member projecting from the joint surface portion, When an object such as a peripheral part approaches from the side, the wall portion provided on the vehicle body component member prevents the object from contacting the protruding portion of the screw member, thereby suppressing damage to the object. be able to.

It is the perspective view which looked at the floor surface of the vehicle interior space in the vehicle which has the joining structure of the vehicle body concerning 1st Embodiment of this invention, and its peripheral part from the vehicle body rear upper side. It is a bottom view which shows the torque box and its peripheral part in the vehicle. It is the sectional view on the AA line of FIG. 2 which shows the cross-sectional shape of the horizontal frame part of the same torque box. It is the BB sectional drawing of FIG. 2 which shows the cross-sectional shape of the front-and-rear frame part of the same torque box. It is the figure which looked at the screw member from the side. FIG. 5 is an enlarged cross-sectional view of FIG. 4 showing an enlarged joint portion between the floor reinforcement and the front and rear frame portions of the torque box. It is an expanded sectional view which shows the junction part of the horizontal frame part of a torque box, and a toe board. It is an expanded sectional view which shows the junction part of the floor reinforcement in the 2nd Embodiment of this invention, and the front-and-rear frame part of a torque box. It is an expanded sectional view which shows the junction part of the floor reinforcement in the 3rd Embodiment of this invention, and the front-and-rear frame part of a torque box. It is a bottom view which shows the torque box and its peripheral part in 4th Embodiment of this invention. FIG. 11 is a cross-sectional view taken along the line C-C of FIG. 10 in which the first flange portion of the front and rear frame portion and the peripheral portion thereof in the torque box are viewed from the vehicle body width direction. It is the DD sectional view taken on the line of FIG. 10 which looked at the front-back frame part of the torque box from the length direction. It is the expanded sectional view which looked at the junction part of a floor reinforcement and the front-and-rear frame part of a torque box from the vehicle body width direction.

  Hereinafter, the details of the joint structure for a vehicle body according to the present invention will be described for each embodiment with reference to the accompanying drawings. In the following description, terms indicating directions such as “front”, “rear”, “right”, “left”, “up”, “down”, and the like are used unless otherwise specified. Each direction of the vehicle body when the traveling direction during forward traveling is set to “front” shall be indicated. Further, in the accompanying drawings, reference numeral “X” is attached to the vehicle body width direction, reference symbol “Y” is attached to the vehicle body longitudinal direction, and reference symbol “Z” is attached to the vehicle body vertical direction.

[First Embodiment]
As shown in FIG. 1, the automobile 1 having a vehicle body joining structure according to the first embodiment includes a floor panel 2, a pair of left and right side sills 4, a pair of left and right hinge pillars 10, a dash panel 20, and a toe board 22.

  In FIG. 1, only the side sill 4 and the hinge pillar 10 on the right side of the vehicle body are shown, but the same side sill 4 and hinge pillar 10 are also provided on the left side of the vehicle body.

  The floor panel 2 is a member constituting the floor surface of the vehicle interior space. A floor tunnel 2a extending in the longitudinal direction Y of the vehicle body is provided at the center of the vehicle body width direction X of the floor panel 2, and an exhaust pipe, a harness, and the like are disposed in the floor tunnel 2a. A pair of left and right floor reinforcements 16 extending in the longitudinal direction Y of the vehicle body are joined to the upper surfaces of the floor panel 2 and the toe board 22.

  The side sill 4 is provided so as to extend in the vehicle body longitudinal direction Y along the end of the floor panel 2 in the vehicle width direction X. The hinge pillar 10 is provided so as to extend from the front end of the side sill 4 to the vehicle body upper side.

  The dash panel 20 is disposed so as to extend in the vehicle body width direction X between the left and right hinge pillars 10, thereby partitioning the vehicle interior space and the engine room in the vehicle body longitudinal direction Y.

  The toe board 22 is disposed across the floor panel 2 and the dash panel 20. The toe board 22 is disposed so as to be inclined toward the vehicle body upper side toward the vehicle body front side. The rear end portion of the toe board 22 is joined to the front end portion of the floor panel 2 by, for example, welding, and the front end portion of the toe board 22 is joined to the lower end portion of the dash panel 20 by, for example, welding.

  FIG. 2 is a bottom view of the toe board 22 as viewed from the lower side of the vehicle body on the right side portion of the vehicle body and the periphery thereof.

  As shown in FIG. 2, the automobile 1 includes a pair of left and right front side frames 24 extending from the dash panel 20 (see FIG. 1) to the front side of the vehicle body, and a pair of left and right sides extending in the vehicle body longitudinal direction Y along the lower surface of the floor panel 2. The floor frame 26 and a pair of left and right torque boxes 30 for connecting the rear end portion of the front side frame 24 to the front end portion of the floor frame 26 and the front end portion of the side sill 4 are further provided.

  2 shows only the front side frame 24, the floor frame 26, and the torque box 30 on the right side of the vehicle body, the same front side frame 24, floor frame 26, and torque box 30 are also provided on the left side of the vehicle body. Is provided.

  The front side frame 24 and the floor frame 26 are disposed at substantially the same position in the vehicle body width direction X and inside the side sill 4. The front side frame 24 is disposed above the side sill 4 and the floor frame 26 in the vehicle body vertical direction Z. The floor reinforcement 16 (see FIG. 1) is disposed above the vehicle body of the floor frame 26 with the floor panel 2 interposed therebetween.

  The torque box 30 includes a front / rear frame portion 32 extending in the vehicle body longitudinal direction Y and a lateral frame portion 33 extending in the vehicle body width direction X. The torque box 30 is made of, for example, an aluminum alloy, and is integrally formed by, for example, die casting.

  The front / rear frame portion 32 is disposed so as to extend in the vehicle body longitudinal direction Y along the lower surface of the toe board 22 and the lower surface of the front end portion of the floor panel 2. The front and rear frame portions 32 are connected to the rear end portion of the front side frame 24 at the front end portion, and are connected to the front end portion of the floor frame 26 at the rear end portion.

  The impact load input to the front side frame 24 from the front side of the vehicle body is transmitted to the floor panel 2 and the rear side frame (not shown) via the front and rear frame portions 32 and the floor frame 26 of the torque box 30, thereby Effective load distribution to the rear side of the vehicle body is realized.

  The lateral frame portion 33 is provided so as to extend outward from the front and rear frame portion 32 in the vehicle body width direction X, and is joined to the front end portion of the side sill 4 at an outer end portion thereof. Thus, the horizontal frame portion 33 is provided across the front and rear frame portions 32 and the side sill 4.

  As described above, the front side frame 24 and the side sill 4 are connected to each other via the torque box 30, thereby suppressing the twist of the front side frame 24, thereby improving the running stability of the automobile 1. It is illustrated. Further, since the impact load input to the front side frame 24 from the front side of the vehicle body is transmitted to the side sill 4 via the torque box 30, more effective load distribution to the rear side of the vehicle body is possible. .

  As shown in FIG. 3, the horizontal frame portion 33 faces the front lower side of the front end portion of the toe board 22 with a space therebetween, and is inclined to be disposed on the upper side of the vehicle body toward the front side of the vehicle body. A front surface portion 42 extending from the front end of the inclined surface portion 41 to the vehicle body upper side, a lower surface portion 43 extending substantially horizontally from the rear end of the inclined surface portion 41 to the vehicle body rear side, and extending from the rear end of the lower surface portion 43 to the vehicle body upper side. A rear surface portion 44 disposed opposite to the vehicle body rear side of the portion 42 with a gap, a flange portion 45 extending from the upper end of the rear surface portion 44 to the vehicle body rear side, and extending from the rear end of the flange portion 45 to the vehicle body lower side. A folded portion 46 is provided.

  In this way, the horizontal frame portion 33 is formed in a groove shape that opens to the vehicle body upper side and extends in the vehicle body width direction X as a whole. The lower surface portion 43 of the horizontal frame portion 33 is disposed so as to overlap the front end of the toe board 22 in the vehicle body longitudinal direction Y, and the inclined surface portion 41 and the front surface portion 42 are disposed on the front side of the vehicle body from the front end of the toe board 22. ing. A portion of the front side of the toe board 22 on the front side of the vehicle body in the open upper surface portion of the horizontal frame portion 33 is closed by a lid member 50.

  The rear surface portion 44 is disposed along the vehicle body vertical direction Z, and the flange portion 45 is disposed along the lower surface of the toe board 22 so as to be inclined toward the vehicle body front side toward the vehicle body upper side. Thus, an acute corner portion K5 (see FIG. 7) is formed between the rear surface portion 44 and the flange portion 45 when viewed from the length direction of the horizontal frame portion 33 (vehicle body width direction X).

  The folded portion 46 is disposed substantially parallel to the rear surface portion 44 along the vehicle body vertical direction Z. Thereby, between the flange part 45 and the folding | returning part 46, the corner part K6 (refer FIG. 7) of an obtuse angle seeing from the length direction (vehicle body width direction X) of the horizontal frame part 33 is formed.

  The flange portion 45 is joined to the lower surface of the toe board 22 by a self-tapping screw member 70 described later. In addition to the screw member 70, an adhesive may be used in combination for joining the toe board 22 and the flange portion 45.

  The lid member 50 is made of, for example, a steel plate. The lid member 50 includes an upper surface portion 51 disposed on the vehicle body upper side of the inclined surface portion 41 of the horizontal frame portion 33, a front flange portion 52 extending from the front end of the upper surface portion 51 to the vehicle body lower side, and a rear end of the upper surface portion 51. A rear flange portion 53 extending upward of the vehicle body is provided.

  The front flange portion 52 of the lid member 50 is joined to the front surface portion 42 of the lateral frame portion 33 by, for example, SPR (self-piercing rivet) or a screw member, and the rear flange portion 53 is toeboard via the dash panel 20 by, for example, welding. 22 is joined to the front end portion. Thus, a closed cross section that is continuous in the vehicle body width direction X is formed between the toe board 22, the lateral frame portion 33, and the lid member 50.

  As shown in FIGS. 2 and 3, the front and rear frame portion 32 is a rear side as a first straight portion that extends in a substantially horizontal straight line from the connecting portion with the floor frame 26 to the front side of the vehicle body along the vehicle body longitudinal direction Y. A front side inclination as a second straight part that extends from the horizontal part 34 to the front end of the rear side horizontal part 34 via a curved part 35 and extends linearly along the direction inclined toward the vehicle body upper side toward the vehicle body front side. Part 36.

  The front / rear frame portion 32 is joined to the floor reinforcement 16 (see FIG. 1) with the toe board 22 or the floor panel 2 sandwiched between the connecting portion with the horizontal frame portion 33 and the vehicle body rear side portion.

  As shown in FIG. 4, the floor reinforcement 16 is a hat-shaped member that is open to the lower side of the vehicle body, and is made of, for example, a high-tensile steel plate. The floor reinforcement 16 includes an upper surface portion 17 facing the toe board 22 or the floor panel 2, a pair of side surface portions 18a and 18b extending downward from both ends of the upper surface portion 17 in the vehicle body width direction X, and side surfaces thereof. A pair of flange portions 19a, 19b extending in the vehicle body width direction X from the lower ends of the portions 18a, 18b, respectively, are provided.

  The front / rear frame portion 32 of the torque box 30 has a generally hat-shaped cross-sectional shape that opens to the upper side of the vehicle body at a portion that overlaps the floor reinforcement 16 in the vehicle body longitudinal direction Y.

  More specifically, the front / rear frame portion 32 includes a first side surface portion 61 and a second side surface portion 62 facing each other, and a lower surface portion 60 as a communication surface portion that connects lower ends of the first and second side surface portions 61 and 62. A first flange portion 63 extending in the vehicle body width direction X from the upper end of the first side surface portion 61 to the outside (on the opposite lower surface portion 60 side), and outward from the upper end of the second side surface portion 62 (on the opposite lower surface portion 60 side). And a second flange portion 64 extending in the vehicle body width direction X.

  The front / rear frame portion 32 includes a first folded portion 67 extending from the end of the first flange portion 63 on the side opposite to the first side surface portion 61 to the vehicle body lower side, and the second flange portion 64 on the side opposite to the second side surface portion 62. And a second folded portion 68 that extends downward from the end of the vehicle body. Thus, by providing the first folded portion 67 and the second folded portion 68 extending in the vehicle body vertical direction Z, the rigidity of the front and rear frame portion 32 against bending in the vehicle vertical direction Z is enhanced.

  In addition, the 1st folding | turning part 67 and the 2nd folding | turning part 68 may be provided so that it may extend in the vehicle body lower side from the intermediate part of the 1st flange part 63 or the 2nd flange part 64 in the vehicle body width direction X.

  When viewed from the length direction of the front and rear frame part 32, between the first flange part 63 and the first side part 61, between the second flange part 64 and the second side part 62, and between the first flange part 63 and the first side part 61. The angles of the corner portions K1, K2, K3, and K4 formed between the folded portion 67 and between the second flange portion 64 and the second folded portion 68 are substantially right angles or slightly larger than right angles. It is an obtuse angle (for example, about 92 ° to 95 °). When the angles of these corner portions K1 to K4 are obtuse, a draft angle of the mold is ensured.

  The front and rear frame portion 32 has a U-shaped cross-sectional shape composed of the first and second side surface portions 61 and 62 and the lower surface portion 60 similar to the above in the vehicle body front side portion of the front end of the floor reinforcement 16. have.

  The front / rear frame portion 32 is joined to the floor reinforcement 16 via the toe board 22 or the floor panel 2 using a plurality of self-tapping screw members 70. In addition to the screw member 70, an adhesive may be used in combination for joining the front / rear frame portion 32 and the floor reinforcement 16.

  The plurality of screw members 70 are driven at appropriate intervals in the longitudinal direction of the front and rear frame portions 32 and the floor reinforcement 16 so that their joint strength can be sufficiently secured.

  With reference to FIGS. 5 and 6, the joining by the screw member 70 is described by taking as an example the joining portion of the flange portion 19 a of the floor reinforcement 16 sandwiching the toe board 22 and the first flange portion 63 of the front and rear frame portion 32. Will be described in detail.

  As with the screw member disclosed in Patent Document 1 (Japanese Patent Publication No. 4-506243) described above, the screw member 70 has a plurality of members to be joined (in the example shown in FIG. The flange 16a of the reinforcement 16 and the toe board 22 and the first flange 63 of the front and rear frame 32 of the torque box 30) are screwed while forming screw holes.

  The screw member 70 has a head portion 71 and a shaft portion 74 extending from the head portion 71. A circumferential groove 72 (see FIG. 6) surrounding the proximal end portion of the shaft portion 74 is formed on the surface of the head portion 71 on the shaft portion 74 side. The shaft portion 74 has a screw portion 75 provided from the base end portion to the intermediate portion, and a sharp tip 76.

  When the floor reinforcement 16 and the front and rear frame portions 32 are joined via the toe board 22, the screw member 70 is rotated at a high speed and the flange portion 19a of the floor reinforcement 16 in which no pilot hole is formed, the toe board 22. Driven into the first flange portion 63 of the front and rear frame portion 32 from the vehicle body upper side (floor reinforcement 16 side).

  When the shaft portion 74 of the screw member 70 passes through the flange portion 19 a of the floor reinforcement 16, the toe board 22, and the first flange portion 63 of the front and rear frame portion 32, the joint surface portions 19 a, 22, 63 with respect to the shaft portion 74. Frictional heat is generated between the contact surface and the outer peripheral surface of the shaft portion 74, and screw holes are formed in the joint surface portions 19 a, 22, and 63 plasticized around the shaft portion 74 by this heat. The screw member 70 is screwed into the screw.

  Thus, since the screw member 70 is driven while plasticizing the base material, the screw member 70 can easily penetrate the hard floor reinforcement 16 made of a high-tensile steel plate.

  In the first flange portion 63 of the front and rear frame portion 32, a base material plasticized when the shaft portion 74 of the screw member 70 penetrates is extended along the shaft portion 74 toward the front end side in the axial direction, thereby lowering the vehicle body lower side. A projecting portion 63a projecting into the shape is formed. Further, the base material plasticized when the shaft portion 74 of the screw member 70 passes through the flange portion 19a of the floor reinforcement 16 is extended in the axial direction, so that it protrudes to the upper side of the vehicle body and surrounds the periphery of the screw member 70. A protrusion 19c that is received in the groove 72 is formed.

  Thereby, in the joint surface portions 19a, 22, and 63 into which the screw member 70 is screwed, a screw hole is increased by forming a long screw hole in the axial direction, so that the floor reinforcement 16 and the toe board 22 made of a steel plate are formed. In contrast, the front and rear frame portions 32 of the torque box 30 made of an aluminum alloy can be firmly joined.

  Further, by using this type of screw member 70, the joint surface portions 19a, 22, and 63 can be joined only by work from the upper side of the vehicle body without making a pilot hole in the joint surface portions 19a, 22, and 63.

  As shown in FIG. 6, each screw member 70 is screwed to be orthogonal to the first flange portion 63 of the front and rear frame portion 32. A tip side portion of the shaft portion 74 of the screw member 70 penetrating the first flange portion 63 protrudes from the first flange portion 63 to the vehicle body lower side. The protruding portion of the screw member 70 is sandwiched between the first side surface portion 61 and the first folded portion 67 that face each other.

  The tip 76 of the screw member 70 is located on the vehicle body upper side than the lower end of the first side surface portion 61 and the lower end of the first folded portion 67. That is, when viewed from the direction in which the first side surface portion 61 and the first folded portion 67 face each other, that is, from the vehicle body width direction X, the first side surface portion 61 and the first folded portion 67 exceed the total length of the protruding portion of the screw member 70. Wrapping. Thereby, the 1st side part 61 and the 1st folding | turning part 67 function as a wall part which prevents contact | abutting of objects, such as a peripheral component, from the side with respect to the protrusion part of the screw member 70. FIG.

  In the above, although the structure of the junction part via the toe board 22 and its periphery part was demonstrated, the structure of the junction part (refer FIG.2 and FIG.3) via the floor panel 2 and its periphery part is also the same.

  Further, as shown in FIG. 4, the second flange portion 64 of the front / rear frame portion 32 also has a floor reinforcement formed by a plurality of screw members 70 via the toe board 22 or the floor panel 2 in the same manner as the first flange portion 63. It is joined to the flange portion 19b of the ment 16. Similarly to the first flange portion 63, the second flange portion 64 is also formed with a protruding portion 64 a that protrudes toward the lower side of the vehicle body, thereby increasing the screw allowance with the screw member 70.

  The second side surface portion 62 and the second folded portion 68 are arranged so as to sandwich the protruding portion of the screw member 70 protruding from the second flange portion 64 toward the vehicle body lower side from both sides in the vehicle body width direction X. Similar to the part 61 and the first folded part 67, it functions as a wall part that prevents the projecting part of the screw member 70 from abutting an object such as a peripheral part from the side thereof.

  Therefore, when assembling peripheral parts or during maintenance, the peripheral portion approaching from the side of the protruding portion on the distal end side of the screw member 70 that penetrates the first flange portion 63 and the second flange portion 64 of the front and rear frame portion 32. Since the first side surface portion 61, the first folded portion 67, the second side surface portion 62, or the second folded portion 68 is interposed between an object such as a component and the protruding portion of the screw member 70, the protruding of the screw member 70 is achieved. Over the entire length of the part, the contact of the object with the projecting part is prevented, whereby damage to the object can be suppressed.

  Further, with respect to the vehicle body width direction X, the clearance between the lower end of the first folded portion 67 and the first side surface portion 61 and the clearance between the lower end of the second folded portion 68 and the second side surface portion 62 are, for example, about 10 mm. Yes. Therefore, an object larger than these gaps is prevented from approaching the screw member 70 from the tip 76 side by the lower end of the first folded portion 67 or the second folded portion 68, thereby protecting the object. Can be achieved.

  In the front and rear frame part 32, the thickness of the first flange part 63 is larger than the thickness of the first folded part 67, the second flange part 64 has the same thickness as the first flange part 63, and the second folded part. The portion 68 has the same thickness as the first folded portion 67. As a result, the torque box 30 can be reduced in weight by reducing the thickness of the first folded portion 67 and the second folded portion 68, and the first flange portion 63 and the second flange portion 64 can be made thicker, thereby reducing the torque box 30. The screw allowance can be increased, whereby the joining strength between the front and rear frame portion 32 and the floor reinforcement 16 can be increased.

  In the front and rear frame portion 32, the thickness of the first side surface portion 61, the second side surface portion 62, and the lower surface portion 60 is equal to or greater than the thickness of the first flange portion 63 and the second flange portion 64. The cross-sectional deformation of the closed cross section formed between the first side surface portion 61, the second side surface portion 62 and the lower surface portion 60 and the toe board 22 or the floor panel 2 is suppressed.

  FIG. 7 is an enlarged cross-sectional view showing a joint portion between the horizontal frame portion 33 and the toe board 22 of the torque box 30. In this joining, the flange portion 45 of the horizontal frame portion 33 is joined to the toe board 22 by a plurality of screw members 70 similar to the above.

  In this joining, the plurality of screw members 70 are driven at appropriate intervals in the longitudinal direction of the lateral frame portion 33 so that the joining strength can be sufficiently secured. Each screw member 70 is driven into the toe board 22 and the flange portion 45 from the upper side of the vehicle body (toe board 22 side).

  The flange portion 45 has a protruding portion 45a that protrudes downward on the vehicle body by a base material plasticized when the shaft portion 74 of the screw member 70 penetrates being extended toward the distal end side in the axial direction along the shaft portion 74. Is formed. Further, the toe board 22 protrudes upward in the vehicle body and is accommodated in the circumferential groove 72 of the screw member 70 when the base material plasticized when the shaft portion 74 of the screw member 70 penetrates is extended in the axial direction. A portion 22a is formed.

  Thereby, in the joint surface parts 22 and 45 into which the screw member 70 is screwed, a screw hole is increased by forming a long screw hole in the axial direction. Therefore, the toe board 22 made of a steel plate is made of an aluminum alloy. The horizontal frame portion 33 of the torque box 30 can be firmly joined.

  Each screw member 70 is screwed so as to be orthogonal to the joint surface portions 22 and 45. Thereby, the axial center L1 of each screw member 70 is disposed at a right angle to the first flange portion 63 of the front and rear frame portion 32 in a side view of the vehicle body.

  The distal end portion of the shaft portion 74 of each screw member 70 protrudes from the flange portion 45 to the vehicle body lower side. The protruding portion of the screw member 70 is sandwiched between the rear surface portion 44 and the folded portion 46 from both sides in the vehicle body front-rear direction Y.

  The lower end of the screw member 70 is located on the vehicle body upper side than the lower end of the folded portion 46. When viewed from the direction perpendicular to the axis L1 of the screw member 70 and the vehicle body width direction X, the rear surface portion 44 and the folded portion 46 overlap the entire length of the protruding portion of the screw member 70.

  Due to the positional relationship as described above, the rear surface portion 44 and the turned-up portion 46 function as a wall portion that prevents an object such as a peripheral part from contacting the protruding portion of the screw member 70 from the vehicle body longitudinal direction Y.

  Accordingly, when assembling peripheral parts, during maintenance, etc., the peripheral parts and other objects that approach the protruding portion on the front end side of the screw member 70 that penetrates the flange portion 45 of the horizontal frame portion 33 and the screw member 70. The rear surface portion 44 or the turn-up portion 46 is interposed between the protruding portion of the screw member 70 and the object is prevented from contacting the protruding portion over the entire length of the protruding portion of the screw member 70. Damage can be suppressed.

  Further, as described above, an acute-angle corner portion K5 is formed between the flange portion 45 and the rear surface portion 44 in a side view of the vehicle body, and with respect to the axis L1 of the screw member 70 orthogonal to the flange portion 45. The rear surface portions 44 intersect each other. Thus, the rear surface portion 44 constitutes an opposing wall portion that faces the tip 76 of the screw member 70 that penetrates the toe board 22 and the flange portion 45.

  Therefore, the rear surface portion 44 is interposed between the screw member 70 and the object such as peripheral parts approaching the screw member 70 from the front end side, that is, the front lower side of the vehicle body, so that the front end of the screw member 70 and the object The contact of the object is suppressed, and thus the object can be protected.

  Further, with respect to the longitudinal direction Y of the vehicle body, the gap between the lower end of the folded portion 46 and the rear surface portion 44 is, for example, about 10 mm. For this reason, an object larger than these gaps is prevented from approaching the tip 76 of the screw member 70 from the lower side of the vehicle body by the lower end of the turn-back portion 46, thereby protecting the object.

  In the horizontal frame portion 33, the thickness of the flange portion 45 is larger than the thickness of the folded portion 46. Accordingly, the torque box 30 is reduced in weight by reducing the thickness of the folded portion 46, and the screw portion 70 is increased in thickness by increasing the thickness of the flange portion 45, whereby the horizontal frame portion 33 and the toe board 22 are increased. The bonding strength between the two can be increased.

  Further, in the horizontal frame portion 33, the thickness of the inclined surface portion 41, the front surface portion 42, the lower surface portion 43 (see FIG. 3) and the rear surface portion 44 is set to be equal to or greater than the thickness of the flange portion 45. 41, suppression of cross-sectional deformation of a closed cross section (see FIG. 3) formed between the front surface portion 42, the lower surface portion 43, the rear surface portion 44, and the toe board 22 is achieved.

[Second Embodiment]
A vehicle body joining structure according to the second embodiment will be described with reference to FIG. In addition, about the component similar to 1st Embodiment, while attaching | subjecting the same code | symbol in FIG. 8, the description is abbreviate | omitted.

  In 2nd Embodiment, the structure of the junction part of the front-and-rear frame part 32 of the torque box 30 and the floor reinforcement 16 differs from 1st Embodiment.

  FIG. 8 is an enlarged cross-sectional view showing a joint portion between the first flange portion 63 of the front and rear frame portion 32 and the flange portion 19a of the floor reinforcement 16 and its peripheral portion in the second embodiment.

  In addition, although illustration is abbreviate | omitted, the junction part of the 2nd flange part 64 of the front-and-rear frame part 32 and the flange part 19b of the floor reinforcement 16 also has the joining structure similar to the junction part shown in FIG.

  As shown in FIG. 8, in the second embodiment, the front and rear frame portion 32 is provided with a cylindrical wall portion 260 that protrudes from the first flange portion 63 to the vehicle body lower side. A plurality of wall portions 260 are provided at intervals in the vehicle body front-rear direction Y according to the joining position where the screw member 70 is driven.

  Although these wall parts 260 are similarly provided in the 2nd flange part 64, in the following description, the wall part 260 provided in the 1st flange part 63 and the structure relevant to this are demonstrated.

  Each wall portion 260 protrudes from the periphery of the portion where the screw member 70 penetrates in the first flange portion 63 to the vehicle body lower side. The wall portion 260 is formed in a cylindrical shape having a circular cross section, for example. However, the cross-sectional shape of the wall portion 260 is not limited to a circular shape, and for example, a rectangular tube shape or other cylindrical wall portions 260 may be provided.

  The inner diameter of the wall portion 260 is larger than the outer diameter of the shaft portion 74 of the screw member 70 and the outer diameter of the protruding portion 63a, and specifically, for example, about 10 mm.

  The protruding height of the wall portion 260 from the lower surface of the first flange portion 63 is larger than the protruding amount of the screw member 70 from the lower surface of the first flange portion 63. Thereby, the wall part 260 overlaps with the full length of the protrusion part of the screw member 70 from the 1st flange part 63 in the side view of the screw member 70. FIG.

  The tip 76 of the screw member 70 is located in the internal space surrounded by the wall portion 260 configured as described above. As a result, the entire protruding portion of the screw member 70 is surrounded by the wall portion 260.

  Therefore, the cylindrical wall portion 260 is interposed between the screw member 70 and an object such as a peripheral component that approaches the distal end 76 of the screw member 70 from the side when the peripheral component is assembled or maintained. . Further, the approach of the object from the distal end 76 side to the screw member 70 can be prevented by the lower end surface of the wall portion 260. Therefore, the contact between the tip 76 of the screw member 70 and the object is effectively suppressed by the cylindrical wall portion 260, and thus damage to the object can be suppressed.

  In the description of the second embodiment, the configuration of the joint portion between the front and rear frame portions 32 of the torque box 30 and the floor reinforcement 16 has been described. However, the configuration of the flange portion 45 of the lateral frame portion 33 of the torque box 30 is the same. A cylindrical wall portion 260 may be provided. In this case, the wall portion 260 surrounds the distal end portion of the screw member 70 used for joining the flange portion 45 and the toe board 22, and the same effect is obtained. can get.

[Third Embodiment]
A vehicle body joining structure according to the third embodiment will be described with reference to FIG. In addition, about the component similar to 1st Embodiment, while attaching | subjecting the same code | symbol in FIG. 9, the description is abbreviate | omitted.

  In 3rd Embodiment, the structure of the junction part of the front-and-rear frame part 32 of the torque box 30 and the floor reinforcement 16 differs from 1st Embodiment.

  FIG. 9 is an enlarged cross-sectional view showing a joint portion between the first flange portion 63 of the front and rear frame portion 32 and the flange portion 19a of the floor reinforcement 16 and its peripheral portion in the third embodiment.

  Although illustration is omitted, the joint portion between the second flange portion 64 of the front and rear frame portion 32 and the flange portion 19b of the floor reinforcement 16 has the same joint structure as the joint portion shown in FIG.

  As shown in FIG. 9, in the third embodiment, the front and rear frame portion 32 is provided with a protrusion 360 that protrudes from the first flange portion 63 to the vehicle body lower side. A plurality of protrusions 360 are provided at intervals in the longitudinal direction Y of the vehicle body in accordance with the joining position where the screw member 70 is driven.

  These protrusions 360 are similarly provided in the second flange part 64, but in the following description, the protrusions 360 provided in the first flange part 63 and the configuration related thereto will be described.

  The protrusion 360 is a portion that is pushed in by the ejector pin when the torque box 30 is released. Since the protrusion 360 has a thickness larger than that of the peripheral portion of the first flange portion 63, deformation of the first flange portion 63 when pressed by the ejector pin is suppressed.

  The projecting portion 360 is provided at least at a location where the screw member 70 is driven in the first flange portion 63. Each protrusion 360 is formed in a columnar shape, for example. However, the cross-sectional shape of the protrusion 360 is not limited to a circle, and for example, a prismatic or other columnar protrusion 360 may be provided.

  The outer diameter of the protrusion 360 is larger than the outer diameter of the shaft portion 74 of the screw member 70. The protruding height of the protrusion 360 from the lower surface of the first flange portion 63 is larger than the protruding amount of the screw member 70 from the lower surface of the first flange portion 63. As a result, the screw member 70 driven into the first flange portion 63 does not penetrate the protrusion 360, and the tip 76 of the screw member 70 is positioned inside the protrusion 260.

  The projecting portion 360 configured as described above has an outer peripheral covering portion 361 that covers the protruding portion of the screw member 70 from the radially outer side, and a tip covering portion 362 that covers the tip 76 of the screw member 70. Therefore, exposure of the tip of the screw member 70 can be avoided by using the projection 360 as a highly rigid portion pressed by the ejector pin.

  Therefore, the outer periphery of the projection 360 is covered between the screw member 70 and an object such as a peripheral component that approaches the distal end portion of the screw member 70 from the side or the distal end 76 side during assembly or maintenance of the peripheral components. By interposing the portion 361 or the tip covering portion 362, the contact between the tip 76 of the screw member 70 and the object is effectively suppressed by the projection 360, and thereby damage to the object can be suppressed. .

  In the description of the third embodiment, the configuration of the joint portion between the front and rear frame portion 32 of the torque box 30 and the floor reinforcement 16 has been described. However, the configuration of the flange portion 45 of the lateral frame portion 33 of the torque box 30 is the same. A protrusion 360 may be provided, and in this case, the protrusion 360 avoids exposing the tip of the screw member 70 used for joining the flange 45 and the toe board 22, thereby providing the same effect. can get.

[Fourth Embodiment]
Next, a vehicle body joining structure according to the fourth embodiment will be described with reference to FIGS. In addition, about the component similar to 1st Embodiment, while attaching | subjecting the same code | symbol in FIGS. 10-13, the description is abbreviate | omitted.

  As shown in FIG. 10, also in the fourth embodiment, the torque box 30 includes a front and rear frame portion 32 and a horizontal frame portion 33, and the front and rear frame portion 32 has a rear side horizontal portion 34, a curved portion 35, and a front side inclination. A portion 36 is provided. That is, as shown in FIG. 11, the front and rear frame portion 32 is curved at the bending portion 35, and the front side inclined portion 36 is inclined in the vehicle body vertical direction Z with respect to the vehicle body longitudinal direction Y (horizontal direction). Has been placed.

  Therefore, when an impact load is input from the front side of the vehicle body to the front and rear frame portion 32 of the torque box 30 via the front side frame 24, the front and rear frame portion 32 has an inclination angle of the front side inclined portion 36 with respect to the horizontal direction. A bending moment that increases the bending angle is likely to occur, and stress is likely to concentrate on the curved portion 35.

  Therefore, in the fourth embodiment, as shown in FIGS. 10 to 12, the first and second ribs 65 and 66 as described below are provided in the front and rear frame portion 32, whereby the front and rear frame portions are provided. 32 is improved in rigidity. Therefore, when the bending moment as described above is generated, the deformation of the cross section of the bending portion 35 and the front inclined portion 36 of the front and rear frame portion 32 is suppressed, and the stress concentration on the bending portion 35 is suppressed, whereby the bending is suppressed. Buckling of the front and rear frame portions that are bent and deformed at the portion 35 is suppressed. Thereby, the load transmission from the front side frame 24 to the vehicle body rear side via the front-rear frame part 32 can be performed satisfactorily.

  The first rib 65 is provided across the first side surface portion 61 and the first flange portion 63, and the second rib 66 is provided across the second side surface portion 62 and the second flange portion 64. It has been. A plurality of first ribs 65 and second ribs 66 are provided from the curved portion 35 of the front and rear frame portion 32 to the front inclined portion 36 at intervals in the length direction of the front and rear frame portion 32.

  The plurality of first ribs 65 are arranged in parallel to each other along a plane perpendicular to the vehicle body longitudinal direction Y. The plurality of second ribs 66 are also arranged in parallel to each other along a plane perpendicular to the vehicle body longitudinal direction Y. As described above, since all the first ribs 65 and the second ribs 66 are formed in parallel, all the first ribs 65 and the second ribs 66 can be easily formed while reducing the number of mold surfaces in die casting. In this way, the mold structure can be simplified, and as a result, productivity can be improved.

  As shown in FIG. 13, the protrusions on the distal end side of the screw members 70 that pass through the first flange portion 63 of the front and rear frame portion 32 are a pair of first portions provided in an inclined manner with respect to the first flange portion 63. It arrange | positions so that it may be pinched | interposed between the ribs 65 from the both sides of the vehicle body front-back direction Y.

  Each screw member 70 is screwed so as to be orthogonal to the joint surface portions 19a, 22 and 63. Thereby, the axial center L2 of each screw member 70 is arranged at right angles to the first flange portion 63 of the front and rear frame portion 32 in a side view of the vehicle body.

  On the other hand, the first ribs 65 projecting from the first flange portion 63 to the vehicle body lower side in the front and rear frame portion 32 are along the vehicle body vertical direction Z, that is, with respect to the first flange portion 63 in the side view of the vehicle body. Are arranged along the inclined direction. Thus, an acute corner portion K7 is formed between each first rib 65 and a portion of the first flange portion 63 that extends from the upper end of the first rib 65 toward the rear lower side of the vehicle body in a side view of the vehicle body. Yes.

  The first rib 65 is provided so as to intersect the axis L <b> 2 of the screw member 70. However, the first rib 65 and the axis L2 of the screw member 70 do not necessarily cross each other, and the lower end of the first rib 65 is arranged at a position slightly shifted from the axis L2 of the screw member 70 to the vehicle body upper side. May be.

  As shown in FIG. 12, the entire protruding portion of the screw member 70 from the first flange portion 63 is disposed so as to overlap the first rib 65 when viewed from the length direction of the front and rear frame portion 32.

  The first rib 65 has a triangular shape when viewed from the length direction of the front and rear frame portion 32, and the vehicle body width direction X dimension of the first rib 65 decreases toward the vehicle body lower side. However, the specific shape of the first rib 65 is not particularly limited.

  Due to the positional relationship between the screw member 70 and the first rib 65 as described above, the first rib 65 adjacent to the front side of the vehicle body of the screw member 70 is opposed to the tip of the screw member 70 as shown in FIG. It constitutes the wall.

  Similarly to the first flange portion 63, the second flange portion 64 of the front and rear frame portion 32 is also joined to the flange portion 19 b of the floor reinforcement 16 via the toe board 22 or the floor panel 2 by a plurality of screw members 70. ing. In addition, the screw member 70 used for this joining is sandwiched between a pair of second ribs 66 adjacent to each other in the vehicle body longitudinal direction Y. The configuration of the second rib 66 and the positional relationship with the screw member 70 are as follows. It is the same as the rib 65. Therefore, the second rib 66 adjacent to the vehicle body front side of the screw member 70 also constitutes an opposing wall portion facing the tip of the screw member 70.

  As described above, the protruding portion of the screw member 70 penetrating the first flange portion 63 and the second flange portion 64 of the front / rear frame portion 32 has the pair of first ribs 65 or the protruding portions from both sides in the vehicle body front-rear direction Y. By being sandwiched between the pair of second ribs 66, when the peripheral parts such as the harness are assembled or maintained, the protruding portion of the screw member 70 and the objects such as the peripheral parts approaching from the longitudinal direction Y of the vehicle body Since the contact is blocked by the pair of first ribs 65 or the pair of second ribs 66, the contact of the object with the tip of the screw member 70 can be suppressed.

  Further, since the first rib 65 or the second rib 66 adjacent to the front side of the vehicle body is opposed to the front end 76 of each screw member 70, the screw member 70 is approached from its front end side, that is, the front lower side of the vehicle body. Contact between an object such as a component and the tip 76 of the screw member 70 is suppressed.

  Further, for an object larger than the distance between the first ribs 65 or the second ribs 66 adjacent in the vehicle body longitudinal direction Y, even when the object approaches the tip 76 of the screw member 70 from directly below the vehicle body vertical direction Z, By interfering with the first rib 65 or the second rib 66, contact with the tip 76 of the screw member 70 can be suppressed.

  As described above, the object contact with the tip 76 of the screw member 70 is blocked by the first rib 65 and the second rib 66, so that the object can be effectively prevented from being damaged.

  In addition, since the first rib 65 and the second rib 66 provided to reinforce the front and rear frame portion 32 as described above can be used to protect the object from the tip 76 of the screw member 70, There is no need to provide a dedicated wall portion for protection in the torque box 30, thereby simplifying the structure of the torque box 30.

  Further, since the approach of the object from the vehicle body width direction X to the tip 76 of the screw member 70 is effectively prevented by the first turn-up portion 67 or the second turn-up portion 68 (FIG. 12), the tip 76 of the screw member 70 is. It is possible to more effectively suppress damage to the object due to contact with the.

  However, in the fourth embodiment, the first folding part 67 and the second folding part 68 do not necessarily have to be provided. In this case as well, the approach of the object from the vehicle body width direction X is the first rib 65 or the first folding part. It can be suppressed by interference with the two ribs 66.

  While the present invention has been described with reference to the above-described embodiments, the present invention is not limited to the above-described embodiments.

  For example, in the above-described embodiment, the present invention has been described by taking the torque box 30 having the front and rear frame portions 32 and the horizontal frame portion 33 as an example, but the specific configuration of the torque box 30 is not particularly limited, For example, the present invention can be applied to a torque box having only the lateral frame portion 33 or a torque box having only the front and rear frame portions 32.

  In the above-described embodiment, the joint portion between the front and rear frame portions 32 of the torque box 30 and the floor reinforcement 16 via the toe board 22 or the floor panel 2, and the lateral frame portion 33 of the torque box 30 and the toe board 22 Although the present invention has been described by taking the joint portion as an example, the present invention can also be applied to joint portions between other vehicle body constituent members.

  Furthermore, in the above-described embodiment, the present invention has been described by taking the joint portion by the self-tapping screw member 70 as an example, but the present invention can also be applied to a joint portion by a screw member that is not self-tapping type.

  Furthermore, in the above-described embodiment, an example in which the present invention is applied to a joint portion between vehicle body constituent members made of different metal materials has been described. However, the present invention also applies to a joint portion between vehicle body constituent members made of the same kind of material. The same applies.

  As described above, according to the present invention, it is possible to protect an object such as a peripheral part at a joint portion between a plurality of vehicle body constituent members by a screw member. There is a possibility of being suitably used in the field of manufacturing automobiles where members are joined.

1 Car 2 Floor panel (joint surface)
4 Side sill 10 Hinge pillar 16 Floor reinforcement 19a, 19b Flange (joint surface)
20 Dash panel 22 Toe board (joint surface)
24 Front side frame 26 Floor frame 28 Rear side frame 30 Torque box 32 Front and rear frame part 33 Horizontal frame part 34 Rear side horizontal part (first straight part)
35 Curved portion 36 Front side inclined portion (second straight line portion)
41 Inclined surface portion 42 Front portion 43 Lower surface portion 44 Rear surface portion 45 Flange portion (joint surface portion)
46 Folding part 50 Lid member 60 Lower surface part (contact surface part)
61 1st side surface part 62 2nd side surface part 63 1st flange part (joint surface part)
64 Second flange (joint surface)
65 1st rib 66 2nd rib 67 1st folding | turning part 68 2nd folding | turning part 70 Screw member 71 Head 74 Shaft part 76 Tip 260 Cylindrical wall part 360 Protrusion part

Claims (8)

A vehicle body joining structure having a plurality of vehicle body constituent members having joint surface portions and a screw member for joining these vehicle body constituent members at the joint surface portions,
The vehicle body component member on the distal end side of the screw member among the vehicle body component members is provided with a pair of wall portions opposed to each other with a protruding portion of the screw member protruding from the joint surface portion of the vehicle body component member. Characteristic vehicle body joint structure. The vehicle body constituting member on the distal end side of the screw member includes a first side surface portion and a second side surface portion facing each other, a communication surface portion connecting one end portions of the first and second side surface portions, and the first side surface portion. A flange portion extending from the other end portion of the side surface portion to the anti-contact surface portion side and forming the joint surface portion; and a folded portion extending from the flange portion so as to face the first side surface portion;
The vehicle body joint structure according to claim 1, wherein the pair of wall portions are the first side surface portion and the folded portion.   3. The vehicle body joining structure according to claim 1, wherein the pair of wall portions are provided so as to overlap an entire length of the protruding portion in a side view of the screw member. The screw member is screwed perpendicularly to the joint surface portion of the vehicle body component member,
4. The vehicle body joining structure according to claim 1, wherein the pair of wall portions are provided to be inclined with respect to a joining surface portion of the vehicle body constituting member. 5. A vehicle body joining structure having a plurality of vehicle body constituent members having joint surface portions and a screw member for joining these vehicle body constituent members at the joint surface portions,
Of the vehicle body component members, the vehicle body component member on the distal end side of the screw member is provided with a cylindrical wall portion surrounding the distal end portion of the screw member protruding from the joint surface portion of the vehicle body component member. Car body joint structure.   6. The vehicle body joining structure according to claim 1, wherein a thickness of the joining surface portion is larger than a thickness of the wall portion. A vehicle body joining structure having a plurality of vehicle body constituent members having joint surface portions and a screw member for joining these vehicle body constituent members at the joint surface portions,
Of the vehicle body component members, the vehicle body component member on the distal end side of the screw member is provided with a protrusion protruding from the joint surface portion of the vehicle body component member to the distal end side of the screw member,
A joint structure for a vehicle body, wherein a tip portion of the screw member is located inside the protrusion. A vehicle body joining structure having a plurality of vehicle body constituent members having joint surface portions and a screw member for joining these vehicle body constituent members at the joint surface portions,
A wall that prevents the object from coming into contact with the projecting portion of the screw member projecting from the joint surface portion of the vehicle body constituent member is included in the vehicle body constituent member on the tip side of the screw member of the vehicle body constituent member. Body joining structure characterized in that a portion is provided.

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