JP5347410B2 - 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 with ribs 12e, 12f in the inside of peripheral wall portions 12a, 12b, 12c, 12d formed in a closed cross-sectional shape on an under body 10 including a floor panel 11, a step providing lower portions of pillars of a side body 20 including a plurality of the pillars 22 extending in a vehicle body vertical direction so as to separate in a vehicle body fore-and-aft direction, and a step assembling the side body to the under body and joining lower portions of the pillars to the ribs of the side sill. In the side sill, a part of the peripheral wall portion is notched and a part of the ribs is exposed, and the lower portions of the pillars are joined with the part where the ribs are exposed. <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. 9 is a diagram showing an assembly line for assembling the monocoque structure vehicle body. In FIG. 9, the accuracy guarantee process requiring positioning accuracy is surrounded by a double frame, and the strength guarantee process requiring joint strength. The hatched area is hatched. As shown in FIG. 9, 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. 9, 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 the monocoque vehicle body shown in FIG. 9, the additional welding process is performed three times, and the side body subassembly and the 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. 10 is a view showing an assembly line for assembling a vehicle body having a space frame structure. In FIG. 10 as well, an accuracy guarantee process that requires positioning accuracy is surrounded by a double frame, and a strength guarantee that joint strength is required. The process is hatched. As shown in FIG. 10, 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 the monocoque vehicle body and the space frame vehicle body are mixed and assembled in one assembly line, as shown in FIGS. 9 and 10, the monocoque vehicle body 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. 11 is an explanatory diagram for explaining a method for 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. In the case of a monocoque structure vehicle body having a side sill extending in the longitudinal direction of the vehicle body and formed in a closed cross section at the lower part of the side surface of the vehicle body, the side sill 100 bulges inward in the vehicle width direction 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.

  Further, in the monocoque structure vehicle body shown in FIG. 11, 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 in the vehicle width direction of the side sill outer 102. 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. 12 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 vehicle having a space frame structure, as shown in FIG. 12, the side sill 110 extending in the vehicle front-rear direction at the lower portion of the side of the vehicle body 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 FIGS. 13 and 14 to be 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 join, and it is difficult to ensure the positioning accuracy of the pillar with respect to the side sill at the portion where the side sill and the pillar intersect.

  FIG. 13 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. 13 shows a portion where the side sill and the pillar intersect. As shown in FIG. 13, 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 and the side sill 110 It may not be ensured positioning accuracy of that pillar 113.

  FIG. 14 is a cross-sectional view showing a part of the side surface of the vehicle body including another side sill in the space frame structure vehicle body, and shows a portion where the side sill and the pillar intersect. As shown in FIG. 14, when assembling an underbody in which a side sill 120 is joined and assembled to a floor panel (not shown) and a side body including a pillar 123 and a side frame outer 122, the side sill 120 and the pillar 123 , The positioning pin 125 is pushed into the positioning hole 123a formed in the pillar 123 and the positioning hole 122a formed in the side frame outer 122, and the side sill 120 and the pillar are pushed in the state where the positioning pin 125 is pushed in. It is possible to ensure the positioning accuracy of the pillar 123 with respect to the side sill 120 by welding the upper end and lower end of the contact portion with the 123 to form the welded portions 127 and 128. Ensures the positioning accuracy of the pillar 123 with respect to 120 It is necessary to use additional parts for positioning to.

  Therefore, it is possible to secure the appearance of the side of the vehicle body and the positioning accuracy of the pillar without separately providing parts for securing the appearance of the vehicle body side and the positioning accuracy of the pillar with respect to the side sill, and integrated into a closed cross-sectional shape. It is desired to assemble a space frame structure vehicle body having side sills formed on the monocoque vehicle body assembly line into a monocoque vehicle body assembly line.

  Accordingly, the present invention has been made in view of the above technical problems, and ensures the appearance of the side surface of the vehicle body and the positioning accuracy of the pillar for the vehicle body of the space frame structure having the side sill integrally formed in a closed cross-sectional shape. And it aims at providing the manufacturing method of the motor vehicle body which can be mixed and assembled in the assembly line which assembles the vehicle body of a monocoque structure.

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 in which ribs are integrally formed inside a peripheral wall portion formed in a closed cross-sectional shape to an underbody including a floor panel; and in a space frame structure vehicle body, A lower portion of each pillar of the side body including a plurality of pillars extending in the vertical direction is provided apart from each other in the longitudinal direction of the vehicle body, the side body is assembled to the under body, and each pillar is attached to the rib of the side sill. A step of joining the lower portion of the side sill Some of the rib portion is cut out in the are exposed, the lower portion of each pillar is joined to the exposed portion of the rib, the side body comprises a side frame outer extending in the vertical direction of the vehicle body The side frame outer is formed to extend to a lower part of the side sill when the side body including the side frame outer is assembled to the under body .

  The invention according to claim 2 of the present application is the invention according to claim 1, wherein the rib of the side sill has a surface extending in a direction intersecting with the vehicle width direction and / or a surface extending in a direction intersecting with the vehicle body vertical direction. When the lower part of each pillar is joined to the rib of the side sill, the pillar is positioned with respect to the side sill by joining the lower part of the pillar to the surface of the rib. It is what.

The invention according to claim 3 of the present application is characterized in that, in the invention according to claim 1 or 2 , the side sill is manufactured by extrusion molding.

According to the method for manufacturing an automobile body according to claim 1 of the present application, in the vehicle body having a space frame structure, a side sill in which ribs are integrally formed inside a peripheral wall portion formed in a closed cross section is assembled to the underbody. A step, a step of providing a lower portion of each pillar of the side body apart from each other in the longitudinal direction of the vehicle body, and a step of assembling the side body to the underbody and joining the lower portion of each pillar to the rib of the side sill. Therefore, it is not necessary to separately provide a part for positioning the pillar with respect to the side sill in the vehicle body of the space frame structure, ensuring the positioning accuracy of the pillar, and the side body can be assembled to the underbody with the side sill assembled. Therefore, it can be used in assembly lines for assembling monocoque car bodies. Over scan and mixed flow of the vehicle body frame structure can be assembled, it is possible to easily mixed production of the vehicle body of the vehicle and the space frame structure of the monocoque structure.
In addition, the side frame outer is formed to extend to the lower part of the side sill when the side body is assembled to the under body, so that a separate part for ensuring the appearance of the side surface of the space frame structure is separately provided. The side body can be assembled to the underbody with the side sill formed integrally in a closed cross-section without obstructing the appearance of the side surface of the vehicle body, and it is possible to achieve the above effect more effectively. it can.

  According to the invention of claim 2 of the present application, the ribs of the side sill have a surface extending in the direction intersecting with the vehicle width direction and / or a surface extending in the direction intersecting with the vehicle body vertical direction, and the pillars on the ribs of the side sill When the lower part of each pillar is joined, the lower part of each pillar is joined to the surface of the rib so that each pillar is positioned with respect to the side sill, so that when the pillar is assembled to the side sill, the vehicle width direction and / or the vehicle body vertical direction The pillar can be positioned relatively easily and reliably, and the above-described effects can be more effectively achieved.

Furthermore, according to the invention according to claim 3 of the present application, the side sill is manufactured by extrusion molding, thereby comparing the side sill in which the rib is integrally formed inside the peripheral wall portion formed in a closed cross-sectional shape. Therefore, the above-described effects can be effectively realized.

Embodiments of the present invention will be described below 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. The underbody 10 has side sills 12 that extend in the vehicle longitudinal direction on both sides in the vehicle width direction of the floor panel 11 and are integrally formed in a closed cross-sectional shape. It is attached. 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 their lower portions spaced apart from each other in the vehicle longitudinal direction.

  The 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 the side sill 12 is assembled, 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 side frame inner and the side sill with respect to the underbody 10 to which the side sill 12 is assembled. The side body 20 and the roof 30 to which the frame outer 25 is assembled 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. FIG. 3 is a perspective view showing a side sill in the vehicle body having the space frame structure.

  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 includes a peripheral wall portion 12a on the inner side in the vehicle width direction, a peripheral wall portion 12b on the vehicle body upper side, a peripheral wall portion 12c on the outer side in the vehicle width direction, and a peripheral wall portion 12d on the lower side of the vehicle body, and the peripheral wall portions 12a, 12b. , 12c, 12d are formed in a square cross section, and are formed in a closed cross section.

  The side sill 12 also extends in the vertical direction of the vehicle body by connecting the peripheral wall portion 12b on the upper side of the vehicle body and the peripheral wall portion 12d on the lower side of the vehicle body inside the peripheral wall portions 12a, 12b, 12c, 12d formed in a closed cross-sectional shape. A longitudinal rib 12e having a vehicle width direction inner side surface S1 and a vehicle width direction outer side surface S2 extending in a direction crossing the vehicle width direction, a vehicle width direction inner side peripheral wall portion 12a, and the vehicle width direction. A lateral rib 12f having a vehicle body upper surface S3 and a vehicle body lower surface S4 extending in the vehicle width direction by connecting to the outer peripheral wall portion 12c and extending in a direction intersecting the vehicle vertical direction; The sections 12a, 12b, 12c, 12d, the vertical ribs 12e, and the horizontal ribs 12f are integrally formed in a cross-sectional shape.

  The side sill 12 is partly cut out of the peripheral wall portions 12a, 12b, 12c, 12d for assembling the center pillar 22, and more specifically, the side sill 12 is located above the vehicle body located on the outer side in the vehicle width direction of the vertical rib 12e. The peripheral wall portion 12b on the side, the peripheral wall portion 12c on the outer side in the vehicle width direction, and the peripheral wall portion 12d on the vehicle body lower side located on the outer side in the vehicle width direction of the vertical rib 12e are cut according to the shape of the center pillar 22. A part of the vertical rib 12e and the horizontal rib 12f is exposed. As shown in FIG. 3, the hatched portion of the vertical rib 12e is exposed, and the cross-hatched portion of the lateral rib 12f is exposed. The side sill 12 is manufactured by extrusion using a material such as iron or aluminum.

  On the other hand, the center pillar 22 has a predetermined length in the vehicle width direction and the longitudinal direction of the vehicle body, and a cross section in the vertical direction of the vehicle body is formed in a substantially rectangular shape. Further, the center pillar 22 has a groove 22b that is recessed from the side surface 22a on the inner side in the vehicle width direction to the outer side in the vehicle width direction, and the groove 22b extends in the horizontal direction. It has an upper surface S5, a vehicle width direction outer surface S6 extending in the vertical direction, and a vehicle body lower surface S7 extending in the horizontal direction so that the exposed portion of the lateral rib 12f of the side sill 12 can be inserted. The side sill 12 is formed corresponding to the lateral rib 12f.

  As shown in FIG. 2, when the center pillar 22 is assembled to the side sill 12, the exposed lateral rib 12 f is inserted into the groove portion 22 b of the center pillar 22, and the exposed vertical rib 12 e is the vehicle width of the center pillar 22. The lower side of the center pillar 22 is joined to the ribs 12e and 12f of the side sill 12 in contact with the side surface 22a on the inner side in the direction.

  Thus, the exposed lateral rib 12f is inserted into the groove 22b of the center pillar 22, whereby the surface S3 of the lateral rib 12f on the vehicle body upper side and the surface S4 of the vehicle body lower side and the surface S5 of the groove 22b on the vehicle body upper side. The center pillar 22 is positioned with respect to the side sill 12 in the vertical direction of the vehicle body by the surface S7 on the vehicle body lower side, and the exposed vertical rib 12e is brought into contact with the inner side surface 22a of the center pillar 22 in the vehicle width direction. Thus, the center pillar 22 is positioned in the vehicle width direction with respect to the side sill 12 by the surface S2 of the vertical rib 12e on the outer side in the vehicle width direction and the side surface 22a of the center pillar 22 on the inner side in the vehicle width direction.

  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, a portion where the side sill 12, the front pillar 21, and the rear pillar 23 intersect is also the same. The lower portions of the front pillar 21 and the rear pillar 23 are joined to the exposed ribs 12e and 12f of the side sill 12, and the front pillar 21 and the rear pillar 23 are positioned with respect to the side sill 12.

  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 peripheral wall portions 12a and 12b formed in a closed cross-sectional shape on the underbody 10 including the floor panel 11, A side sill 12 having ribs 12e and 12f integrally formed therein is assembled inside 12c and 12d. On the other hand, in the side body 20, the lower parts of the front pillar 21, center pillar 22 and rear pillar 23 are separated from each other in the longitudinal direction of the vehicle body. After that, the side body 20 is assembled to the underbody 10, and the lower portions of the front pillar 21, the center pillar 22, and the rear pillar 23 are joined to the ribs 12e and 12f of the side sill 12, respectively. Further, the roof 30 is assembled to the underbody 10, and the vehicle body 1 having a space frame structure is assembled. And after the side body 20 and the roof 30 are assembled | attached to the underbody 10, each joining part is joined by welding, welding, etc., for example, and the joint strength of each joining part is ensured.

  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 peripheral wall portions 12a, 12b, 12c, and 12d formed in a closed cross-sectional shape on the underbody 10 including the floor panel 11 are provided. The step of assembling the side sill 12 having the ribs 12e and 12f integrally formed therein, and the lower portions of the pillars 21, 22, and 23 of the side body 20 including the plurality of pillars 21, 22, and 23 extending in the vertical direction of the vehicle body The side sill 12 includes a step of separating the vehicle in the longitudinal direction of the vehicle body and a step of assembling the side body 20 to the underbody 10 and joining the lower portions of the pillars 21, 22 and 23 to the ribs 12e and 12f of the side sill 12. The peripheral wall portions 12a, 12b, 12c, 12d are partially cut away to form ribs 12e, 12 Some are exposed to, the rib 12e, the lower portion of each pillar 21, 22, 23 are joined to the exposed portion of 12f. As a result, in the vehicle body 1 having the space frame structure, there is no need to separately provide a part for positioning the pillar with respect to the side sill, the pillar positioning accuracy is ensured, and the side body is assembled to the underbody with the side sill assembled. Therefore, it is possible to mix and assemble a space frame structure vehicle body in an assembly line for assembling a monocoque structure vehicle body, and to easily perform mixed flow production of the monocoque structure vehicle body and the space frame structure vehicle body.

  Further, the ribs 12e and 12f of the side sill 12 have a surface S2 extending in a direction intersecting with the vehicle width direction and surfaces S3 and S4 extending in a direction intersecting with the vehicle body up-and-down direction. When joining the lower portions of the pillars 22 and 23, the lower portions of the pillars 21, 22, and 23 are joined to the surfaces S2, S3, and S4 of the ribs 12e and 12f, thereby positioning the pillars with respect to the side sills. When the pillars are assembled to the pillars, the pillars can be positioned relatively easily and reliably in the vehicle width direction and the vehicle body vertical direction, and the above-described effects can be achieved more effectively.

  Further, the side frame outer 25 is formed so as to extend to the lower part of the side sill 12 when the side body 20 is assembled to the underbody 10, thereby ensuring the appearance of the side surface of the vehicle body in the space frame structure. The side body can be assembled to the underbody in which the side sill 12 formed integrally with the closed cross-section is assembled without obstructing the appearance of the side surface of the vehicle body, without the need to provide separate parts. It can play effectively.

  Furthermore, the side sill 12 in which the ribs 12e and 12f are integrally formed inside the peripheral wall portions 12a, 12b, 12c, and 12d formed in the closed cross-sectional shape by the side sill 12 being manufactured by extrusion molding is compared. Therefore, the above-described effects can be effectively realized.

  In the vehicle body 1 having the space frame structure according to the first embodiment, the side rib 12 has a vertical rib 12e having a surface S2 extending in the direction intersecting the vehicle width direction and a horizontal rib having surfaces S3 and S4 extending in the direction intersecting the vehicle vertical direction. 12f is provided, but the side sill 12 is provided with only the vertical rib 12e having the surface S2 extending in the direction crossing the vehicle width direction, and is brought into contact with the side surface 22a of the center pillar 22 on the inner side in the vehicle width direction. The center pillar may be positioned in the vehicle width direction, and the side sill 12 is provided with only the lateral ribs 12f having the surfaces S3 and S4 extending in the direction intersecting the vehicle body vertical direction, and is inserted into the groove portion 22b of the center pillar 22. By doing so, the center pillar may be positioned in the vertical direction of the vehicle body.

  FIG. 4 is a view for explaining a side sill in a vehicle body having a space frame structure according to the second embodiment of the present invention. FIG. 4 (a) is a perspective view of the side sill, and FIG. FIG. 4B is a plan view showing the side sill. FIG. 4B is a plan view showing the center pillar assembled to the side sill. The vehicle body having the space frame structure according to the second embodiment has the same configuration as that of the vehicle body having the space frame structure according to the first embodiment. Omitted.

  As shown in FIG. 4, in the vehicle body having the space frame structure according to the second embodiment, the vertical ribs 12e and the horizontal ribs 12f are integrally formed in the peripheral walls 12a, 12b, 12c, and 12d formed in a closed cross section. The side sill 40 formed on the side ribs 12a, 12b, 12c, and 12d is notched, and the vertical ribs 12e and the horizontal ribs 12f are partially exposed. A notch 12g that is recessed in a triangular shape toward the inner side in the vehicle width direction in plan view is formed.

On the other hand, the center pillar 42 is formed with a groove 22b that is recessed from the side surface 22a on the vehicle width direction inner side to the vehicle width direction outer side at the lower portion thereof. As shown in FIG. Corresponding to the notch 12g formed in the 40 lateral ribs 12f, a protrusion 22c that protrudes in a triangular shape toward the inner side in the vehicle width direction in plan view from the surface S6 on the outer side in the vehicle width direction of the groove 22b. Is provided.

  In addition, in FIG. 4, although the part where the side sill 40 and the center pillar 42 intersect is shown, the part where the side sill, the front pillar, and the rear pillar intersect is configured similarly.

  Also in the vehicle body having the space frame structure according to the second embodiment, the side sill 40 is assembled to the underbody 10 including the floor panel 11, and each pillar of the side body 20 including the plurality of pillars 21, 42, 23 extending in the vehicle body vertical direction. The lower parts of 21, 21, and 23 are spaced apart from each other in the longitudinal direction of the vehicle body, the side body 20 is assembled to the underbody 10, and the lower parts of the pillars 21, 42, and 23 are joined to the ribs 12e and 12f of the side sill 40. Thus, it is possible to assemble by mixing with the assembly line for assembling the monocoque structure car body. In such a case, the pillar 42 can be positioned in the longitudinal direction of the vehicle body relative to the side sill 40 by joining the notch 12g of the side sill 40 and the protruding portion 22c of the pillar 42.

  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 third embodiment of the present invention, and FIG. 6 is a perspective view showing the side sill in the vehicle body having the space frame structure. FIG. In the vehicle body having the space frame structure according to the third embodiment, components having the same configuration as those of the vehicle body having the space frame structure according to the first embodiment and having the same functions are denoted by the same reference numerals and description thereof is omitted. .

As shown in FIGS. 5 and 6, in the vehicle body of the space frame structure according to the third embodiment, the side sill 50 has vertical ribs 12 e inside the peripheral wall portions 12 a, 12 b, 12 c, 12 d formed in a closed cross section. There is formed integrally in the circumferential wall portion 12 b of the vehicle body upper side of the sill 50, are formed two openings 12h having a surface extending in a direction intersecting the longitudinal direction of the vehicle body is formed in a rectangular shape in a plan view .

On the other hand, the center pillar 52 is provided with a locking portion 53 to be inserted into the opening 12h of the side sill 50 at a lower portion thereof, and the locking portion 53 is connected to the side surface 22a on the inner side in the vehicle width direction of the center pillar 52. A horizontal portion 53a extending inward in the width direction and a vertical portion 53b extending from the horizontal portion 53a to the vehicle body lower side are formed in a right-angle cross section in the vehicle longitudinal direction. By vertical portion 53b of the center pillar 52 is inserted into the opening 12h of the side sill 50 is positioned in the longitudinal direction of the vehicle body by a surface extending in a direction crossing the longitudinal direction of the vehicle body opening 12 h, the side sill is a horizontal section 5 3 a by contact with the peripheral wall portion 12b of the vehicle body upper side of 50, and is positioned in the vertical direction of the vehicle body by a horizontal portion 5 3 a.

  The locking portion 53 may be formed integrally with the center pillar 52 or may be attached separately. 5 and 6 show the portion where the side sill 50 and the center pillar 52 intersect, but the portions where the side sill, the front pillar, and the rear pillar intersect also have the same configuration.

  Also in the vehicle body having the space frame structure according to the third embodiment, the side sill 50 is assembled to the underbody 10 including the floor panel 11, and each pillar of the side body 20 including the plurality of pillars 21, 52, 23 extending in the vehicle body vertical direction. By providing the lower portions of 21, 21, and 23 spaced apart from each other in the longitudinal direction of the vehicle body, the side body 20 is assembled to the underbody 10, and the lower portions of the pillars 21, 52, and 23 are joined to the ribs 12e of the side sill 50, It can be mixed and assembled in an assembly line for assembling a monocoque body. In such a case, the center pillar 52 can be positioned in the longitudinal direction of the vehicle body and the vertical direction of the vehicle body with respect to the side sill 50 by the engaging portion 53 of the center pillar 52.

  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 fourth embodiment of the present invention. In the vehicle body having the space frame structure according to the fourth embodiment, components having the same configuration as those of the vehicle body having the space frame structure according to the first embodiment and having the same functions are denoted by the same reference numerals and description thereof is omitted. .

  As shown in FIG. 7, in the vehicle body of the space frame structure according to the fourth embodiment, the side sill 60 has vertical ribs 12e and horizontal ribs inside peripheral wall portions 12a, 12b, 12c, and 12d formed in a closed cross-sectional shape. Although 12f is integrally formed, the peripheral wall portion 12c on the outer side in the vehicle width direction includes a vertical portion 12i extending in the vertical direction of the vehicle body and an inclined portion 12j inclined from the vertical portion 12i to the inner side in the vehicle width direction. It is formed in preparation. On the other hand, similarly to the center pillar 22, the center pillar 62 is formed with a groove portion 22b that is recessed from the side surface 22a on the inner side in the vehicle width direction to the outer side in the vehicle width direction. The portions where the side sill, the front pillar, and the rear pillar intersect with each other are similarly configured.

  Also in the vehicle body of the space frame structure according to the fourth embodiment, the side body 20 is assembled to the underbody 10, and the lower part of each pillar 62 is joined to the ribs 12e and 12f of the side sill 60, so that the monocoque structure vehicle body is obtained. Can be mixed and assembled in the assembly line to be assembled. In such a case, the horizontal rib 12f is inserted into the groove portion 22b of the pillar 62, whereby the pillar 62 can be positioned in the vertical direction of the vehicle body with respect to the side sill 60, and the vertical rib 12e is positioned on the inner side in the vehicle width direction of the pillar 62. The pillar 62 can be positioned with respect to the side sill 60 in the vehicle width direction by contacting the side surface 22a.

  FIG. 8 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. The vehicle body having the space frame structure according to the fifth embodiment having the same configuration as that of the vehicle body having the space frame structure according to the third embodiment and having the same function is denoted by the same reference numeral and description thereof is omitted. . In FIG. 8, the portion where the side sill and the center pillar intersect is shown, but the portion where the side sill, the front pillar, and the rear pillar intersect is also configured similarly.

As shown in FIG. 8, in the vehicle body of the space frame structure according to the fifth embodiment, the side sill 70 has vertical ribs 12e and horizontal ribs inside peripheral wall portions 12a, 12b, 12c, and 12d formed in a closed cross-sectional shape. 12f are formed integrally in the circumferential wall portion 12 b of the vehicle body upper side, the opening 12h is formed having a surface extending in a direction intersecting the longitudinal direction of the vehicle body is formed in a rectangular shape in plan view similarly to the side sill 50 However, the lateral rib 12f is formed only between the peripheral wall portion 12a on the inner side in the vehicle width direction and the vertical rib 12e, and the peripheral wall portion 12c on the outer side in the vehicle width direction is perpendicular to the vertical portion 12i extending in the vertical direction of the vehicle body. An inclined portion 12j that is inclined inward in the vehicle width direction from the portion 12i is formed.

  Further, the side sill 70 has a peripheral wall portion 12c on the outer side in the vehicle width direction cut out in order to assemble the center pillar 72. In the side sill 70, the peripheral wall portion 12d on the vehicle body lower side and the outer side in the vehicle width direction The vertical rib 12e, the peripheral wall portion 12d on the vehicle body lower side, and the vertical portion 12i of the peripheral wall portion 12c on the outer side in the vehicle width direction are formed with the lower side of the vertical portion 12i of the peripheral wall portion 12c remaining. A groove portion 12l is formed by the remaining portion 12k having a thickness.

  On the other hand, the center pillar 72 is provided at its lower portion with a locking portion 73 to be inserted into the opening 12h of the side sill 70, and the locking portion 73 extends from the side surface 72a on the inner side in the vehicle width direction of the center pillar 72 to the vehicle width. An inclined portion 73a that extends downward inward in the direction and a vertical portion 73b that extends downward from the inclined portion 73a are provided. The center pillar 72 is positioned in the front-rear direction of the vehicle body by a surface extending in a direction intersecting with the front-rear direction of the vehicle body of the opening 12 h by inserting the vertical portion 73 b of the locking portion 73 into the opening 12 h of the side sill 70.

  Further, the center pillar 72 is formed such that the lower end portion thereof is inserted into the groove portion 12 l corresponding to the shape of the groove portion 12 l of the side sill 70, and the center pillar 72 has the lower end portion of the center pillar 72 of the side sill 70. By being inserted into the groove portion 121, the side rib 70 is positioned in the vehicle width direction by the left rib 12 e of the side sill 70 and the left portion 12 k of the vertical portion 12 i of the peripheral wall portion 12 c on the outer side in the vehicle width direction. The peripheral wall portion 12d is positioned in the vertical direction of the vehicle body.

  Also in the vehicle body of the space frame structure according to the fifth embodiment, the side body 20 is assembled to the underbody 10, and the lower portions of the pillars 21, 72, and 23 are joined to the ribs 12e of the side sill 70, thereby providing a monocoque structure. It can be mixed and assembled in the assembly line for assembling the car body. In such a case, by inserting the vertical portion 73b of the locking portion 73 into the opening 12h of the side sill 70, the pillars 21, 72, and 23 can be positioned in the vehicle longitudinal direction with respect to the side sill 70. By inserting the lower end portion of the pillar 72 into the groove portion 121 of the side sill 70, the pillar can be positioned in the vehicle body vertical direction and the vehicle width direction with respect to the side sill 70.

  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 a perspective view which shows the side sill in the vehicle body of the said space frame structure. It is a figure for demonstrating the 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 a perspective view which shows the 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 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 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. It is sectional drawing which shows a part of vehicle body side surface including another side sill in the vehicle body of a space frame structure.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Car body 10 Under body 11 Floor panel 12, 40, 50, 60, 70 Side sill 12a, 12b, 12c, 12d Peripheral wall part 12e, 12f Rib 20 Side body 21, 22, 23, 52, 62, 72 Pillar 25 Side frame outer

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 space frame structure vehicle body, a step of assembling a side sill in which ribs are integrally formed inside a peripheral wall portion formed in a closed cross-sectional shape to an underbody including a floor panel;
In the space frame structure vehicle body, a step of providing the lower portions of the pillars of the side body including a plurality of pillars extending in the vehicle body vertical direction apart from each other in the vehicle body longitudinal direction;
Assembling the side body to the under body, and joining the lower part of each pillar to the rib of the side sill;
With
The side sill, said portion of said partially notched rib of the peripheral wall portion is exposed, the lower portion of each pillar is joined to the exposed portion of the rib,
The side body includes a side frame outer extending in the vertical direction of the vehicle body,
The side frame outer is formed to extend to a lower portion of the side sill when the side body including the side frame outer is assembled to the under body.
A method of manufacturing an automobile body. The rib of the side sill has a surface extending in a direction intersecting with the vehicle width direction and / or a surface extending in a direction intersecting with the vehicle body vertical direction,
When the lower part of each pillar is joined to the rib of the side sill, the pillar is positioned with respect to the side sill by joining the lower part of the pillar to the surface of the rib.
The method of manufacturing an automobile body according to claim 1. The side sill is manufactured by extrusion,
The method of manufacturing an automobile body according to claim 1 or 2 .

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