JP5272623B2 - Manufacturing method of automobile body - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a method of manufacturing an automobile body capable of assembling a vehicle body of a space frame structure by mixed flowing that into an assembling line for assembling a vehicle body of a monocoque structure. <P>SOLUTION: For assembling the vehicle body of the space frame structure, the method of manufacturing the automobile body comprises a step assembling a side sill 12 integrally formed in a closed cross-sectional shape on an under body 10 including a floor panel 11, a step raising a stud bolt on a side body 20 including a pillar 22 extending in a vehicle body vertical direction and a side frame outer 25, and a step assembling the side body to the under body and the stud bolt to the side sill from the outside in the vehicular width direction. The stud bolt is erected at a lower portion of the pillar so as to extend inward in the vehicular width direction. The side frame outer is formed so as to extend to a lower portion of the side sill. <P>COPYRIGHT: (C)2010,JPO&amp;INPIT

Description

  The present invention relates to an automobile body manufacturing method for assembling a space frame structure vehicle body by mixing a monocoque structure vehicle body with a space frame structure vehicle body in an assembly line for assembling a monocoque structure vehicle body.

  As is well known, a monocoque structure and a space frame structure are generally known as the body structure of an automobile, and a body body of a monocoque structure is manufactured by forming a body by assembling panels without using an independent frame skeleton. On the other hand, a vehicle body having a space frame structure is manufactured by forming a body by assembling panels after forming a frame skeleton.

  As for a vehicle body having such a space frame structure, for example, Patent Document 1 relates to a cross-joined portion of a frame member. However, a roof cross member, a pillar member, and a floor cross member are connected to move the cabin portion to the left and right. A first frame member group that continuously surrounds the cross section in the direction, a roof frame member, a front pillar member, a rear pillar member, and a floor frame member, and a second frame that continuously surrounds the cabin portion in the front-rear direction cross section. A vehicle skeleton structure having a structure that surrounds a cabin part in the front-rear and left-right directions by cross-linking the skeleton member groups to each other is disclosed.

JP 2004-338419 A

  By the way, in recent years, in an assembly line for assembling automobile bodies, a monocoque structure vehicle body and a space frame structure vehicle body are mixed in one assembly line as part of responding to the demand for diversification of vehicle types and reduction in assembly costs. It is considered to assemble.

  Here, FIG. 8 is a diagram showing an assembly line for assembling a monocoque structure vehicle body. In FIG. 8, an accuracy guarantee process requiring positioning accuracy is surrounded by a double frame, and a strength guarantee process requiring joint strength. The hatched area is hatched. As shown in FIG. 8, when assembling a monocoque vehicle body, first, a front frame, a front floor panel, a rear frame, and a rear floor panel are each assembled as subassemblies.

  Next, the front frame and the front floor panel assembled as a subassembly are temporarily attached in a state of being positioned, and the front body is assembled, while the rear frame and the rear floor panel assembled as a subassembly are positioned. The rear body is assembled in the state. Then, the front body and the rear body in the temporarily attached state are temporarily attached in a positioned state, and the underbody is assembled.

  After the underbody is assembled, additional shot welding is performed on the underbody in the tacked state. In the assembly line for a monocoque vehicle body shown in FIG. 8, two additional welding processes are performed, and the front body and the rear body are subjected to additional welding to ensure the joint strength of the underbody.

  Then, the body shell is assembled by temporarily attaching the side body and the roof assembled as sub-assemblies to the underbody assembled in this way in a state where they are positioned. Additional welding is performed again on the body shell in the temporarily attached state. In the assembly line for a monocoque vehicle body shown in FIG. 8, three additional welding processes are performed, and the side body subassembly and roof subassembly are welded to the underbody to ensure the joint strength of the body shell. Is done. In this way, the body shell constituting the monocoque vehicle body is assembled.

  On the other hand, FIG. 9 is a diagram showing an assembly line for assembling a vehicle body having a space frame structure. In FIG. 9 as well, an accuracy guarantee process requiring positioning accuracy is surrounded by a double frame, and strength guarantee requiring joint strength is provided. The process is hatched. As shown in FIG. 9, when assembling a vehicle body having a space frame structure, first, a front frame and a rear frame are each assembled as a subassembly.

  Next, the front frame and the rear frame assembled as sub-assemblies are temporarily attached, and additional welding is performed on the front frame sub-assembly and the rear frame sub-assembly in the temporary attachment state. As a result, the bonding strength between the front frame subassembly and the rear frame subassembly is ensured.

  Thereafter, the dash panel is temporarily attached in a positioned state, and additional dash welding is performed on the dash panel in the temporary attachment state, and the joining strength of the dash panel is ensured. The front floor panel and the rear floor panel are also temporarily attached to each other and then subjected to additional welding, so that the bonding strength between the front floor panel and the rear floor panel is ensured, thereby assembling the underbody.

  Then, the side frame inner, the roof frame, the side frame outer, the roof panel, and the rear end panel, which are assembled as subassemblies, are sequentially positioned with respect to the underbody thus assembled. It is temporarily attached in a state, and then additional welding is performed to ensure the joining strength. In this manner, the body shell constituting the vehicle body having the space frame structure is assembled.

  As described above, when a monocoque vehicle body and a space frame vehicle body are mixed and assembled in a single assembly line, as shown in FIGS. 8 and 9, the monocoque vehicle assembly line has a space frame structure. Therefore, it is preferable to assemble a monocoque vehicle body with a space frame structure in a monocoque vehicle body assembly line in a monocoque vehicle body assembly line.

  However, when assembling a space frame structure vehicle body by mixing a space frame structure vehicle body with a monocoque structure vehicle body, in the assembly line of the monocoque structure vehicle body, the side body assembled as a subassembly is assembled to the underbody. Therefore, it becomes a problem how to assemble the side sill integrally formed in a closed cross section in the space frame structure vehicle body.

  FIG. 10 is an explanatory view for explaining a method of forming a side sill in a monocoque structure vehicle body, and shows a part of a side surface of the vehicle body in the monocoque structure vehicle body in a sectional view. When the monocoque structure vehicle body has a side sill that extends in the longitudinal direction of the vehicle body and is formed in a closed cross-section at the lower part of the side surface of the vehicle body, as shown in FIG. The side sill inner 101 and the side sill outer 102 bulging outward in the vehicle width direction and having a cross-sectional hat shape are formed, and the upper and lower ends of the side sill inner 101 and the side sill outer 102 are joined by flange coupling. To form a closed cross-section.

  10, the floor panel 103 is joined to the side sill inner 101 on the inner side in the vehicle width direction of the side sill inner 101, and the vehicle on the outer side of the side sill outer 102 in the vehicle width direction. A side frame outer 104 that bulges outward in the width direction and has a cross-sectional hat shape is joined together with the side sill inner 101 and the side sill outer 102 by flange connection.

  When a monocoque vehicle body having the side sill 100 configured as described above is manufactured in a monocoque vehicle body assembly line, the underbody 105 in which the side sill inner 101 is attached to the floor panel 103, the side sill outer 102, and the side frame. When the side body 106 to which the outer 104 is attached is assembled, the side sill inner 101 and the side sill outer 102 are flange-coupled at the upper end portion and the lower end portion, respectively, and the side sill 100 having a closed cross section is formed.

  On the other hand, in the space frame structure vehicle body, the side sill is integrally formed in a closed cross-sectional shape. Therefore, unlike the monocoque structure vehicle body, it is not necessary to provide a flange portion for flange connection, and the side sill is formed. Therefore, since it is not necessary to connect the flange, it is possible to simplify the assembly process and reduce the weight of the vehicle body.

  FIG. 11 is a cross-sectional view showing a part of a side surface of a vehicle body including a side sill in a vehicle body having a space frame structure. In the space frame structure vehicle body, as shown in FIG. 11, the side sill 110 extending in the vehicle body longitudinal direction at the lower portion of the vehicle body side surface is integrally formed in a closed cross-sectional shape. A panel 111 is attached, and a side frame outer 112 that extends in the vertical direction of the vehicle body and bulges outward in the vehicle width direction and has a cross-sectional hat shape is attached to the outer side of the side sill 110 in the vehicle width direction. As shown in FIG. 12 described later, a pillar is attached between the side sill 110 and the side frame outer 112 at a portion where the side sill 110 and a pillar extending in the vehicle body vertical direction intersect.

  When manufacturing a space frame structure vehicle body having such a side sill 110 in an assembly line for a monocoque vehicle body, a side body including pillars and side frame outer 112 extending in the vertical direction of the vehicle body, and an underbody including a floor panel 111 are provided. However, if the side sill 110 is assembled to the side body, the floor panel 111 may be deformed when the underbody including the floor panel 111 is conveyed. Can be assembled to the underbody.

  However, when the side sill 110 is joined to the floor panel 111 and assembled to the underbody, and the underbody and the side body are assembled, the side sill 110 is located on the outer side in the vehicle width direction of the side sill 110 in the side frame outer 112 shown in FIG. And the side frame outer 112 are difficult to be joined.

  FIG. 12 is a cross-sectional view showing another part of the side surface of the vehicle body including the side sill in the space frame structure, and FIG. 12 shows a portion where the side sill and the pillar intersect. As shown in FIG. 12, when assembling an underbody 115 in which a side sill 110 is joined and assembled to a floor panel (not shown), and a side body 116 including a pillar 113 and a side frame outer 112 extending in the vertical direction of the vehicle body. Then, the side sill 110 and the pillar 113 are brought into contact with each other, and the upper and lower end portions of the contact portion between the side sill 110 and the pillar 113 are welded to form the welded portions 117 and 118, so that they are integrally formed in a closed cross-sectional shape. It is possible to assemble the space frame structure vehicle body having the side sill 110 in the assembly line of the monocoque structure vehicle body. In such a case, the side sill garnish is provided so as to cover the welded portion 118 in order to ensure the appearance of the side surface of the vehicle body. 119 must be attached.

  Therefore, it is possible to secure the appearance of the side surface of the vehicle body without providing parts for ensuring the appearance of the side surface of the vehicle body, and to install the vehicle body of the space frame structure having the side sill integrally formed in a closed cross-sectional shape into the monocoque structure vehicle body assembly line. Therefore, it is desired to assemble and mix with a monocoque vehicle body.

  Therefore, the present invention has been made in view of the above technical problem, and the monocoque structure of the vehicle body of the space frame structure having the side sill integrally formed in a closed cross-sectional shape without impairing the appearance of the side surface of the vehicle body. It is an object of the present invention to provide a method for manufacturing an automobile body that can be mixed and assembled in an assembly line for assembling a vehicle body.

  For this reason, the manufacturing method of an automobile body according to claim 1 of the present application is a manufacturing method of an automobile body in which a vehicle body having a space frame structure is assembled by mixing a vehicle body having a space frame structure with a vehicle body having a monocoque structure. In the space frame structure vehicle body, a step of assembling a side sill integrally formed in a closed cross section to the underbody including the floor panel, and in the space frame structure vehicle body, a pillar extending in the vehicle body vertical direction and a side frame outer A step of erecting stud bolts on the side body including the side body and assembling the side body to the under body, and the side bolt mounted on the side body with the stud bolts erecting on the side body. Steps to assemble from the outside The stud bolt is erected at a lower portion of the pillar so as to extend inward in the vehicle width direction when the side body is assembled to the underbody, and the side frame outer is attached to the underbody. When the side body is assembled, the side body is formed to extend to a lower portion of the side sill.

  The invention according to claim 2 of the present application is the invention according to claim 1, wherein the stud bolt is formed integrally with a closed cross-section when the side body is assembled to the underbody. And is assembled to the side sill.

  Furthermore, the invention according to claim 3 of the present application is characterized in that, in the invention according to claim 1 or 2, a fastening member that is fastened to the stud bolt assembled to the side sill is attached to a vehicle interior side of the side sill. It is what.

  According to the method of manufacturing an automobile body according to claim 1 of the present application, the step of assembling the side sill to the under body, the step of standing the stud bolt to the side body, the side body to the under body, and the stud bolt to the side sill The stud bolt is erected on the lower part of the pillar so as to extend toward the inner side in the vehicle width direction, and the side frame outer extends to the lower part of the side sill. By forming the side frame, the side body can be assembled to the underbody where the side sill is assembled without obstructing the appearance of the side of the vehicle body. By mixing the frame body See that it is to make, it is possible to easily perform a mixed production of the vehicle body of the vehicle body and the space frame structure of the monocoque structure.

  Further, according to the invention of claim 2 of the present application, the stud bolt extends through the inside of the side sill integrally formed in a closed cross-sectional shape and is assembled to the side sill so that the stud bolt is erected. The lower part and the side sill can be joined more firmly, and the above-mentioned effect can be more effectively exhibited.

  Furthermore, according to the invention according to claim 3 of the present application, the fastening member to be fastened with the stud bolt assembled to the side sill is attached to the vehicle interior side of the side sill, so that the fastening member is corroded by sand or mud. In addition to suppressing this, the corrosion resistance of the fastening member can be improved, and the appearance of the side surface of the vehicle body can be ensured without the fastening member being viewed from the outside of the vehicle body, and the above-described effects can be more effectively achieved.

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.
FIG. 1 is an exploded perspective view showing an exploded view of a vehicle body having a space frame structure according to an embodiment of the present invention. As shown in FIG. 1, a vehicle body 1 having a space frame structure according to an embodiment of the present invention includes an underbody 10 that forms a bottom surface portion of a vehicle body, and a side body 20 that forms vehicle body side wall portions on the left and right sides of the underbody 10. And a roof 30 constituting a vehicle body roof portion.

  The underbody 10 includes a floor panel 11 formed in a flat plate shape, and side sills 12 integrally formed in a closed cross-section extending in the vehicle body front-rear direction are attached to the underbody 10 on both sides in the vehicle width direction of the floor panel 11. It has been. On the other hand, the side body 20 includes a side frame inner in which a front pillar 21, a center pillar 22, and a rear pillar 23 extending in the vehicle body vertical direction and a side frame 24 extending in the vehicle body front-rear direction are joined, and the side frame inner outside the vehicle width direction. A side frame outer 25 provided on the side and extending in the vertical direction of the vehicle body is assembled. The front pillar 21, the center pillar 22, and the rear pillar 23 are provided with their upper ends joined to the side frame 24 and separated from each other in the vehicle longitudinal direction.

  A space frame structure vehicle body 1 according to the present embodiment is assembled in a monocoque structure vehicle body in the assembly line for assembling the monocoque structure vehicle body shown in FIG. When assembling, the side sill 12 integrally formed in a closed cross-sectional shape is assembled to the underbody 10 including the floor panel 11, and the front sill extends in the vehicle body vertical direction with respect to the underbody 10 to which the side sill 12 is assembled. The side body 20 to which the pillar 21, the center pillar 22, the rear pillar 23, the side frame outer 25, and the like are assembled, and the roof 30 are assembled.

  FIG. 2 is a cross-sectional view showing a part of the side surface of the vehicle body including the side sill in the space frame structure, and FIG. 2 shows a portion where the side sill and the center pillar intersect. As shown in FIG. 2, in a vehicle body 1 having a space frame structure, a side sill 12 integrally formed in a closed cross-sectional shape is attached to a floor panel 11. The side sill 12 has a hollow portion 12a and is formed in a quadrangular cross section. An opening 12c is formed in a side surface portion 12b on the inner side in the vehicle width direction, and the outer side in the vehicle width direction is coaxial with the opening portion 12c. An opening 12e is formed in the side surface portion 12d. The side sill 12 is manufactured by extrusion using a material such as iron or aluminum.

  On the other hand, the center pillar 22 is provided with a stud bolt 27 extending downward inward in the vehicle width direction. The stud bolt 27 has a columnar portion 27a formed in a columnar shape and a columnar portion 27a. A small-diameter screw portion 27b is provided, and one end of the cylindrical portion 27a is attached to the center pillar 22 by, for example, arc stud welding. The stud bolt 27 passes through the inside of the side sill 12 through the opening 12e and the opening 12c of the side sill 12, and is assembled to the side sill 12. The side sill 12 is fastened to the threaded portion 27b of the stud bolt 27 on the vehicle interior side. A fastening member 28 such as a nut is attached.

  As shown in FIG. 2, the opening 12c formed in the side surface portion 12b on the inner side in the vehicle width direction of the side sill 12 is formed to be larger than the screw portion 27b and smaller than the cylindrical portion 27a. When the member 28 is fastened to the threaded portion 27b of the stud bolt 27, the side surface portion 12b on the inner side in the vehicle width direction of the side sill 12 is deformed by the end surface 27c on the inner side in the vehicle width direction of the cylindrical portion 27a of the stud bolt 27. This can be suppressed.

  Further, in the vehicle body 1 having the space frame structure, the side frame outer 25 of the side body 20 extends below the side sill 12 so as to cover the center pillar 22 and the side sill 12 from the outer side in the vehicle width direction, and has an L-shaped cross section. Is formed.

  In FIG. 2, a portion where the side sill 12 and the center pillar 22 intersect is shown. However, in the vehicle body 1 having a space frame structure, the front pillar 21 and the rear pillar 23 are also located at the lower portions of the vehicle body 1 in the vehicle width direction. Stud bolts extending upward are erected and can be assembled to the side sill from the outside in the vehicle width direction.

  When the vehicle body 1 having the space frame structure configured as described above is assembled in the assembly line of the vehicle body having the monocoque structure, the side sill 12 integrally formed in a closed cross section is assembled to the underbody 10 including the floor panel 11. The stud bolt 27 is erected on the side body 20 including the pillars 21, 22, 23 extending in the vertical direction of the vehicle body and the side frame outer 25. Thereafter, the side body 20 is assembled to the under body 10, and the under body A stud bolt 27 erected on the side body 20 is assembled to the side sill 12 assembled to 10 from the outer side in the vehicle width direction. Further, the roof 30 is assembled to the underbody 10, and the vehicle body 1 having a space frame structure is assembled.

  As described above, in the method for manufacturing an automobile body according to the present embodiment, in the vehicle body having the space frame structure, the step of assembling the side sill 12 integrally formed in the closed cross-sectional shape to the underbody 10 including the floor panel 11; The step of standing stud bolts 27 on the side body 20 including the pillars 21, 22, 23 extending in the vertical direction and the side frame outer 25, the side body 20 being assembled to the underbody 10, and the stud bolts 27 being mounted on the side sill 12 The stud bolt 27 is erected on the lower part of the pillar 22 so as to extend toward the inner side in the vehicle width direction when the side body 20 is assembled to the underbody 10. The side frame outer 25 is connected to the underbody 10 on the side. Is formed so as to extend to the bottom of the side sill 12 when de 20 is assembled. Thereby, in the vehicle body 1 having the space frame structure, the side body 20 can be assembled to the underbody 10 to which the side sill 12 is assembled without impairing the appearance of the side surface of the vehicle body. It is possible to mix and assemble the space frame structure vehicle body, and easily perform mixed flow production of the monocoque structure vehicle body and the space frame structure vehicle body.

  Moreover, the stud bolt 27 penetrates the inside of the side sill 12 integrally formed in the closed cross-sectional shape and is assembled to the side sill 12, thereby further strengthening the lower part of the pillar on which the stud bolt is erected and the side sill. It is possible to join, and the effect can be more effectively exhibited.

  Further, the fastening member 28 that is fastened to the stud bolt 27 assembled to the side sill 12 is attached to the side of the vehicle interior of the side sill 12, thereby preventing the fastening member from being corroded by sand or mud and the corrosion resistance of the fastening member. In addition, the appearance of the side surface of the vehicle body can be ensured without the fastening member being visually recognized from the outside of the vehicle body, and the above effect can be more effectively achieved.

  FIG. 3 is a cross-sectional view showing a part of a side surface of a vehicle body including a side sill in a vehicle body having a space frame structure according to a second embodiment of the present invention. The vehicle body of the space frame structure according to the second embodiment differs from the vehicle body 1 of the space frame structure according to the first embodiment only in the attachment structure of the side sill and the pillar, and therefore has the same configuration and the same. The same reference numerals are given to those having the function of and the description is omitted.

As shown in FIG. 3, in the vehicle body of the space frame structure according to the second embodiment, the side sill 40 formed integrally with a closed cross-section has a hollow portion 40a and is formed in a square cross-section. An upper flange portion 40c extending to the upper side of the side sill 40 and a lower flange portion 40d extending to the lower side of the side sill 40 are provided on the side surface portion 40b on the outer side in the vehicle width direction, and an opening 40e is formed in the upper flange portion 40c. An opening 40f is formed in the lower flange portion 40d.

  On the other hand, the center pillar 42 is provided with stud bolts 43, 44 extending downward inward in the vehicle width direction, and the stud bolts 43, 44 are respectively connected to the flange portion 40c, through the openings 40e, 40f of the side sill 40. Fastening members 45 and 46 that are fastened to the stud bolts 43 and 44 are attached to the vehicle interior side of the flange portions 40c and 40d of the side sill 40.

  Also in the vehicle body having the space frame structure according to the second embodiment, the side sill 40 integrally formed in a closed cross-sectional shape is assembled to the underbody 10 including the floor panel 11, and the pillar 42 and the side frame outer extending in the vehicle body vertical direction are assembled. Stud bolts 43 and 44 are erected on the side body 20 including 25, and then the side body 20 is assembled to the under body 10 and the side sill 40 assembled to the under body 10 is erected on the side body 20. By assembling the stud bolts 43 and 44 from the outer side in the vehicle width direction, the stud bolts 43 and 44 can be assembled and mixed in an assembly line for assembling a monocoque vehicle body. In such a case, the stud bolts 43 and 44 can be made small, and the weight of the vehicle body can be reduced.

  In the vehicle body of the space frame structure according to the first and second embodiments, the side sill integrally formed in a closed cross-sectional shape is formed in a square tube shape, but a rib extending in the vehicle width direction is formed inside the side sill. Even when using the provided side sill, the stud frame that extends inward in the vehicle width direction is installed at the lower part of the pillar, and the side sill and the stud bolt are assembled together. It is possible to assemble with mixed flow.

  FIG. 4 is a sectional view showing a part of a side surface of a vehicle body including a side sill in a vehicle body having a space frame structure according to a third embodiment of the present invention. The vehicle body of the space frame structure according to the third embodiment differs from the vehicle body 1 of the space frame structure according to the first embodiment only in the cross-sectional structure of the side sill and the attachment structure of the side sill and the pillar. Those having the same structure and having the same function are denoted by the same reference numerals and description thereof is omitted.

  As shown in FIG. 4, in the vehicle body of the space frame structure according to the third embodiment, the side sill 50 integrally formed in a closed cross-sectional shape has a rib 50a extending in the vehicle width direction and has a substantially sun-shaped cross section. The openings 50c and 50d are formed in the side surface portion 50b on the inner side in the vehicle width direction, and the openings 50f and 50g are formed in the side surface portion 50e on the outer side in the vehicle width direction.

  On the other hand, the center pillar 52 is provided with stud bolts 53 and 54 extending inward in the vehicle width direction at the lower portion thereof, and the stud bolts 53 and 54 are columnar portions 53a and 54a formed in a columnar shape, respectively. And screw portions 53b and 54b having a diameter smaller than that of the cylindrical portions 53a and 54a, and one ends of the cylindrical portions 53a and 54a are inserted into stud bolt insertion holes 52a and 52b provided in the lower portion of the center pillar 52. It is attached. A stud bolt 53 passes through the inside of the side sill 50 through the openings 50c and 50f of the side sill 50 and is assembled to the side sill 50, and a stud bolt 54 passes through the inside of the side sill 50 through the openings 50d and 50g of the side sill 50. Fastening members 55 and 56 that are fastened to the screw portions 53b and 54b of the stud bolts 53 and 54 are attached to the vehicle interior side of the side sill 50.

  Also in the vehicle body having the space frame structure according to the third embodiment, the side sill 50 integrally formed in a closed cross section is assembled to the underbody 10 including the floor panel 11, and the pillar 52 and the side frame outer extending in the vehicle body vertical direction are assembled. Stud bolts 53 and 54 are erected on the side body 20 including 25, and then, the side body 20 is assembled to the under body 10 and the side sill 50 assembled to the under body 10 is erected to the side body 20. By assembling the stud bolts 53 and 54 from the outer side in the vehicle width direction, the stud bolts 53 and 54 can be assembled and mixed in an assembly line for assembling a monocoque vehicle body.

  FIG. 5 is a cross-sectional view showing a part of a side surface of a vehicle body including a side sill in a vehicle body having a space frame structure according to a fourth embodiment of the present invention. Since the vehicle body of the space frame structure according to the fourth embodiment is different from the vehicle body of the space frame structure according to the third embodiment only in the cross-sectional structure of the side sill, it has the same configuration and performs the same operation. The same reference numerals are given to those and descriptions thereof are omitted.

As shown in FIG. 5, in the vehicle body having the space frame structure according to the fourth embodiment, the side sill 60 integrally formed in a closed cross-sectional shape is the side sill 50 in the vehicle body having the space frame structure according to the third embodiment. Although ribs are formed inside the side sill 60 in the same manner as the above, the ribs 50h and 50i are provided so as to guide the stud bolts 53 and 54 when the stud bolts 53 and 54 erected on the center pillar 52 are assembled to the side sill 60. Is formed. The ribs 50 h and 50 i have a diameter larger than the diameter of the cylindrical portions 53 a and 54 a of the stud bolts 53 and 54, taper surfaces 50 j and 50 k are formed on the outer side in the vehicle width direction, and the stud bolt 53 is formed on the side sill 60. , 54 can be used to guide the stud bolts 53, 54.

  Also in the vehicle body having the space frame structure according to the fourth embodiment, the side sill 60 integrally formed in a closed cross section is assembled to the underbody 10 including the floor panel 11, and the pillar 52 and the side frame outer extending in the vehicle body vertical direction are assembled. Stud bolts 53 and 54 are erected on the side body 20 including 25, and then the side body 20 is assembled to the under body 10 and the side sill 60 assembled to the under body 10 is erected to the side body 20. By assembling the stud bolts 53 and 54 from the outer side in the vehicle width direction, the stud bolts 53 and 54 can be assembled and mixed in an assembly line for assembling a monocoque vehicle body. In such a case, the stud bolts 53 and 54 can be guided when the stud bolts 53 and 54 are assembled to the side sill 60 by the ribs 50 h and 50 i, and the stud bolts 53 and 54 can be more easily assembled to the side sill 60. Can do.

  FIG. 6 is a cross-sectional view showing a part of a side surface of a vehicle body including a side sill in a vehicle body having a space frame structure according to a fifth embodiment of the present invention. Since the vehicle body of the space frame structure according to the fifth embodiment is different from the vehicle body of the space frame structure according to the third embodiment only in the attachment structure of the side sill and the pillar, it has the same configuration and is similar. The components having the function are denoted by the same reference numerals and the description thereof is omitted.

  As shown in FIG. 6, in the vehicle body of the space frame structure according to the fifth embodiment, the side sill 70 integrally formed in a closed cross-sectional shape has a rib 70 a extending in the vehicle width direction and has a substantially sun-shaped cross section. Although formed in a shape, an upper flange portion 70c extending above the side sill 70 and a lower flange portion 70d extending below the side sill 70 are provided on the side surface portion 70b on the outer side in the vehicle width direction, and the upper flange portion 70c. Is formed with an opening 70e, and the lower flange 70d is formed with an opening 70f.

  On the other hand, the center pillar 72 is provided with stud bolts 73 and 74 extending downwardly inward in the vehicle width direction, and the stud bolts 73 and 74 are respectively connected to the flange portion 70c through the openings 70e and 70f of the side sill 70. Fastening members 75 and 76 for fastening the stud bolts 73 and 74 are attached to the flange portions 70c and 70d of the side sill 70 on the vehicle interior side.

  Also in a vehicle body having a space frame structure according to the fifth embodiment, a side sill 70 integrally formed in a closed cross-section is assembled to the underbody 10 including the floor panel 11, and a pillar 72 and a side frame outer that extend in the vehicle body vertical direction are assembled. Stud bolts 73 and 74 are erected on the side body 20 including 25, and then the side body 20 is assembled to the under body 10 and the side sill 70 assembled to the under body 10 is erected on the side body 20. By assembling the stud bolts 73 and 74 from the outside in the vehicle width direction, the stud bolts 73 and 74 can be assembled and mixed in an assembly line for assembling a monocoque vehicle body.

  FIG. 7 is a cross-sectional view showing a part of a side surface of a vehicle body including a side sill in a vehicle body having a space frame structure according to a sixth embodiment of the present invention. Since the vehicle body of the space frame structure according to the sixth embodiment is different from the vehicle body of the space frame structure according to the fifth embodiment only in the attachment structure of the side sill and the pillar, it has the same configuration and is similar. The components having the function are denoted by the same reference numerals and the description thereof is omitted.

  As shown in FIG. 7, in the vehicle body of the space frame structure according to the sixth embodiment, the side sill 80 integrally formed in a closed cross-sectional shape has ribs 80a extending in the vehicle width direction, and has a substantially cross-sectional shape of the sun. An upper flange portion 80c that extends upward from the side sill 80 and a lower flange portion 80d that extends downward from the side sill 80 are provided on the side surface portion 80b on the outer side in the vehicle width direction. Although the opening 80e is formed, no opening is formed in the lower flange portion 80d.

  On the other hand, the center pillar 82 is provided with a stud bolt 83 extending inward in the vehicle width direction at the lower portion thereof, but the lower end portion of the center pillar 82 is bent inward in the vehicle width direction to form a bowl shape. A formed locking portion 82a is provided. The center pillar 82 has a locking portion 82 a locked to the flange portion 80 d of the side sill 80, and a stud bolt 83 assembled to the flange portion 80 c through the opening 80 e of the side sill 80. A fastening member 85 that is fastened to the stud bolt 83 is attached to the vehicle interior side of the flange portion 80 c of the side sill 80.

  Also in the vehicle body having the space frame structure according to the sixth embodiment, a side sill 80 integrally formed in a closed cross section is assembled to the underbody 10 including the floor panel 11, and a pillar 82 and a side frame outer extending in the vehicle body vertical direction are assembled. 25, the stud bolt 83 is erected on the side body 20, and then the side body 20 is assembled to the under body 10, and the locking portion 82a is attached to the flange portion 80d to the side sill 80 assembled to the under body 10. In the locked state, the stud bolt 83 erected on the side body 20 is assembled from the outer side in the vehicle width direction, so that it can be mixed and assembled in an assembly line for assembling a monocoque vehicle body.

  The present invention is not limited to the illustrated embodiments, and it goes without saying that various improvements and design changes can be made without departing from the gist of the present invention.

  The present invention relates to a method for manufacturing an automobile body in which an assembly line for assembling a monocoque structure vehicle body mixes a space frame structure vehicle body with a monocoque structure vehicle body to assemble a space frame structure vehicle body, and is integrated into a closed cross-sectional shape. Therefore, the present invention can be suitably applied to the production of a vehicle body having a space frame structure having side sills that are formed in a conventional manner.

It is a disassembled perspective view which decomposes | disassembles and shows the vehicle body of the space frame structure which concerns on embodiment of this invention. It is sectional drawing which shows a part of vehicle body side surface including a side sill in the vehicle body of the said space frame structure. It is sectional drawing which shows a part of vehicle body side surface including a side sill in the vehicle body of the space frame structure which concerns on the 2nd Embodiment of this invention. It is sectional drawing which shows a part of vehicle body side surface including a side sill in the vehicle body of the space frame structure which concerns on the 3rd Embodiment of this invention. It is sectional drawing which shows a part of vehicle body side surface including a side sill in the vehicle body of the space frame structure which concerns on the 4th Embodiment of this invention. It is sectional drawing which shows a part of vehicle body side surface including a side sill in the vehicle body of the space frame structure which concerns on the 5th Embodiment of this invention. It is sectional drawing which shows a part of vehicle body side surface including a side sill in the vehicle body of the space frame structure which concerns on the 6th Embodiment of this invention. It is a figure which shows the assembly line which assembles the vehicle body of a monocoque structure. It is a figure which shows the assembly line which assembles the vehicle body of a space frame structure. It is explanatory drawing for demonstrating the method of forming a side sill in the vehicle body of a monocoque structure. It is sectional drawing which shows a part of vehicle body side surface including a side sill in the vehicle body of a space frame structure. It is sectional drawing which shows another part of the vehicle body side surface including a side sill in the vehicle body of a space frame structure.

Explanation of symbols

1 Body 10 Underbody
11 Floor panel 12, 40, 50, 60, 70, 80 Side sill 20 Side body 21, 22, 23, 42, 52, 72, 82 Pillar 25 Side frame outer 27, 43, 44, 53, 54, 73, 74, 83 Stud bolt 28, 45, 46, 55 , 56, 75 , 76 , 85 Fastening member

Claims (3)

A vehicle body manufacturing method in which a space frame structure body is mixed with a monocoque structure body body to assemble a space frame structure body body,
In a vehicle body having a space frame structure, a step of assembling a side sill integrally formed in a closed cross-sectional shape to an underbody including a floor panel;
In a vehicle body having a space frame structure, a step of standing stud bolts on side bodies including pillars extending in the vertical direction of the vehicle body and side frame outers;
Assembling the side body to the under body, and assembling the stud bolt erected on the side body from the outside in the vehicle width direction to the side sill assembled to the under body;
With
The stud bolt is erected at the lower portion of the pillar so as to extend toward the inner side in the vehicle width direction when the side body is assembled to the under body,
The side frame outer is formed to extend to a lower portion of the side sill when the side body is assembled to the under body.
A method of manufacturing an automobile body. When the side body is assembled to the under body, the stud bolt is assembled to the side sill through the inside of the side sill formed integrally with a closed cross-section.
The method of manufacturing an automobile body according to claim 1. A fastening member to be fastened with the stud bolt assembled to the side sill is attached to the vehicle interior side of the side sill.
The method of manufacturing an automobile body according to claim 1 or 2.

Images