JP2015182627A - Panel structure of vehicle body - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a panel structure of a vehicle body which secures the rigidity needed for a vehicle body while inhibiting increase of the weight of the vehicle body.SOLUTION: A body side panel 9 includes: an outer panel 21; and an inner panel 22. A lower end edge of a flange part 24d of the outer panel 21 defines an upper edge of an outer door opening 29. A lower area 38 of a side plate part 34a of the inner panel 22 makes surface contact with the flange part 24d of the outer panel 21 from the inner side in a vehicle width direction and overlaps therewith. Left and right extension panels 20 are jointed to both end parts of a front header panel 16 reinforcing a roof panel 5 when viewed in the vehicle width direction. A side plate part 40 of the extension panel 20 has a lower area 45 which makes surface contact with the lower area 38 of the side plate part 34a of the inner panel 22 from the inner side in the vehicle width direction and overlaps therewith. The lower area 45 of the extension panel 20, the lower area 38 of the inner panel 22, and the flange part 24d of the outer panel 21 are jointed overlapping with each other in the vehicle width direction.

Description

  The present invention relates to a panel structure of a vehicle body.

  Patent Document 1 describes a cab body structure provided for a cab of a vehicle. The cab includes a cab front panel, a cab side panel, a connection auxiliary member, and a front window. The cab front panel is disposed in front of the vehicle, and a front window support portion is formed on an upper edge thereof. The cab side panel includes an outer panel and an inner panel. The coupling auxiliary member has an inner panel connecting portion joined to the inner panel and a front panel connecting portion joined to the cab front panel, and is arranged across the inner panel and the cab front panel. .

JP 2008-132835 A

  In the cab body structure described in Patent Document 1, the cab front panel has a front window support, and is joined to the inner panel of the cab side panel via a connection assisting member. When (for example, a force for twisting the vehicle body) is input to the vehicle body, the force received by the cab front panel around the front window opening acts on the cab side panel side via the connection assisting member. For this reason, for example, when the support rigidity of the connection auxiliary member by the cab side panel is low, deformation or the like occurs in the cab side panel before the connection auxiliary member, and the torsional rigidity of the vehicle body cannot be sufficiently secured. There is a fear. In addition, such inconvenience can be solved by increasing the thickness of the inner panel or adding a reinforcing member to the joint between the coupling auxiliary member and the cab side panel. Will increase.

  SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a vehicle body panel structure capable of ensuring the rigidity required for the vehicle body while suppressing an increase in the weight of the vehicle body.

  In order to solve the above problems, a first aspect of the present invention is a vehicle body panel structure having a front window opening in front of a passenger compartment, and includes a roof panel, a body side panel, and an upper reinforcing panel. The roof panel has a front edge that defines the upper edge of the front window opening, and extends rearward from the front edge to cover the vehicle compartment from above. The body side panel has an upper edge that is joined to one side edge of the roof panel in the vehicle width direction, and stands up along the front-rear direction on one side of the passenger compartment. The upper reinforcement panel is joined to the lower surface of the front edge of the roof panel and extends in the vehicle width direction in the vicinity of the upper edge of the front window opening, and downward from one end of the main reinforcement. An extending portion that extends and is disposed on the inner side in the vehicle width direction than the body side panel to reinforce the front edge of the roof panel. The body side panel includes a body side panel outer and a body side panel inner that is disposed on the inner side in the vehicle width direction of the body side panel outer and forms a closed space between the body side panel outer. The body side panel outer, the body side panel inner, and the extended portion of the upper reinforcing panel have joint regions that are joined to each other in the vehicle width direction.

  In the above configuration, the body side panel outer, the body side panel inner, and the extended portion of the upper reinforcing panel have joint regions that are joined to each other in the vehicle width direction. That is, the upper reinforcing panel is joined to a position where the body side panel outer and the body side panel inner overlap. For this reason, compared to the case where the upper reinforcement panel is joined only to the body side panel inner, the support rigidity of the upper reinforcement panel by the body side panel is higher, and the force that deforms the front window opening (for example, the vehicle body Even if the twisting force) acts on the vehicle body, the body side panel is hardly deformed. In this way, the torsional rigidity of the vehicle body can be increased by increasing the support rigidity of the upper reinforcement panel by the body side panel without increasing the thickness of the body side panel inner or adding a reinforcing member. The rigidity necessary for the vehicle body can be ensured while suppressing an increase in weight.

  A second aspect of the present invention is a vehicle body panel structure having a front window opening in front of a passenger compartment, and includes a dash panel, a body side panel, and a lower reinforcing panel. The dash panel has an upper edge that extends in the vehicle width direction and defines a lower edge of the front window opening, extends downward from the upper edge, and stands up in front of the passenger compartment. The body side panel has a front end edge portion joined to an outer edge on one side in the vehicle width direction of the dash panel, and stands up along the front-rear direction on one side of the passenger compartment. The lower reinforcing panel is joined to the rear surface of the upper edge of the dash panel and extends in the vehicle width direction in the vicinity of the lower edge of the front window opening, and the rear from the end on one side of the main reinforcing part And an extending portion that extends to the vehicle width direction inside the body side panel to reinforce the upper edge of the dash panel. The body side panel includes a body side panel outer and a body side panel inner that is disposed on the inner side in the vehicle width direction of the body side panel outer and forms a closed space between the body side panel outer. The body side panel outer, the body side panel inner, and the extending portion of the lower reinforcing panel have joint regions that are joined to each other in the vehicle width direction.

  In the above configuration, the body side panel outer, the body side panel inner, and the extending portion of the lower reinforcing panel have joint regions that are joined to each other in the vehicle width direction. That is, the lower reinforcing panel is joined to a position where the body side panel outer and the body side panel inner overlap. For this reason, compared with the case where the lower reinforcing panel is joined only on the body side panel inner, the lower side reinforcing panel is supported by the body side panel, and the lower side reinforcing panel has a higher rigidity to support deformation of the front window opening (for example, Even if the force that twists the vehicle body) acts on the vehicle body, the deformation of the body side panel hardly occurs. In this way, the torsional rigidity of the vehicle body can be increased by increasing the support rigidity of the lower reinforcement panel by the body side panel without increasing the thickness of the body side panel inner or adding a reinforcing member. The rigidity required for the vehicle body can be ensured while suppressing an increase in the weight of the vehicle.

  A third aspect of the present invention is the vehicle body panel structure according to the first aspect, and includes a dash panel and a lower reinforcing panel. The dash panel has an upper edge that extends in the vehicle width direction and defines a lower edge of the front window opening, extends downward from the upper edge, and stands up in front of the passenger compartment. The lower reinforcing panel is joined to the rear surface of the upper edge of the dash panel and extends in the vehicle width direction in the vicinity of the lower edge of the front window opening, and the rear from the end on one side of the main reinforcing part And an extending portion that extends to the vehicle width direction inside the body side panel to reinforce the upper edge of the dash panel. The body side panel outer, the body side panel inner, and the extending portion of the lower reinforcing panel have joint regions that are joined to each other in the vehicle width direction.

  In the above configuration, the periphery of the front window opening is reinforced by the lower reinforcing panel in addition to the upper reinforcing panel, so that the torsional rigidity of the vehicle body can be further improved.

  A fourth aspect of the present invention is the vehicle body panel structure according to any one of the first to third aspects, wherein the body side panel inner and the extending portion of the reinforcing panel overlap the body side panel outer. And another joining region that is joined to each other in the vehicle width direction is provided between the joining region and the main reinforcing portion.

  In the above configuration, since the extension portion of the reinforcing panel is joined to the body side panel inner in other joining regions in addition to the joining region, the rigidity of supporting the reinforcing panel by the body side panel is further increased, and the torsional rigidity of the vehicle body is further increased. improves.

  ADVANTAGE OF THE INVENTION According to this invention, the rigidity required for a vehicle body can be ensured, suppressing the increase in the weight of a vehicle body.

It is a perspective view of the cab to which the panel structure of the vehicle body concerning this embodiment is applied. It is a disassembled perspective view of the cab of FIG. It is a perspective view of the principal part of the cab of FIG. FIG. 4 is a cross-sectional view taken along arrow IV-IV in FIG. 1. It is a VV arrow sectional view of Drawing 1.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings. In each figure, FR indicates the front of the vehicle, UP indicates the upper side, and IN indicates the inner side in the vehicle width direction. Moreover, in the following description, the left-right direction means the left-right direction with the vehicle facing forward.

  As shown in FIG. 1, a vehicle body panel structure 10 (hereinafter simply referred to as a panel structure 10) according to the present embodiment is applied to, for example, a cab (vehicle body) 2 of a cab-over type truck 1. The cab 2 is supported by a front end portion of a chassis frame (not shown) via a pair of left and right front cab mounts 3 at the lower front end of the cab 2 so as to be tiltable. The rear end side of the cab 2 in the non-tilt state is supported by the chassis frame via a pair of left and right rear cab mounts (not shown) on the rear surface portion of the cab 2.

  As shown in FIGS. 1 and 2, the cab 2 is a substantially box-like body having a front window 4, a roof panel 5, a dash panel 6, a floor panel 7, a back panel 8, and a pair of left and right body side panels 9. Therefore, the passenger compartment 11 is partitioned inside. A front window opening 12 is defined on the front surface of the cab 2 by a roof panel 5, a dash panel 6, and a pair of left and right body side panels 9. Are bonded by an adhesive. Since the left and right body side panels 9 are symmetrically provided on the left and right sides of the track 1 and have substantially the same configuration, the left side will be described below and the right side description will be omitted.

  The roof panel 5 extends in the up-down direction above the passenger compartment 11 to cover the passenger compartment 11 from above. The front edge 5 a of the roof panel 5 defines the upper edge of the front window opening 12. The dash panel 6 stands along the vehicle width direction below the front window 4 on the front surface of the cab 2 and covers the vehicle compartment 11 from the front. An upper end edge 6 a of the dash panel 6 extends in the vehicle width direction and defines the lower edge of the front window opening 12. The floor panel 7 extends in the up-down direction below the passenger compartment 11 to cover the passenger compartment 11 from below, and its front edge is joined to the lower edge of the dash panel 6 by spot welding or the like. The back panel 8 has a back window opening 13, is joined to the rear edge of the floor panel 7 by spot welding or the like, stands up in the vehicle width direction, and covers the vehicle compartment 11 from the rear. A back window 14 is bonded to the peripheral edge of the back window opening 13 of the back panel 8 with an adhesive. The upper edge of the back panel 8 is joined to the rear edge of the roof panel 5 by spot welding or the like. The body side panel 9 has a door opening 15 that opens the vehicle compartment 11 to the left side (one side in the vehicle width direction), and stands up along the front-rear direction on the left side of the vehicle compartment 11. The body side panel 9 has an upper edge, a front edge, a lower edge, and a rear edge that are spot-welded to the left side edge of the roof panel 5, the dash panel 6, the floor panel 7, and the back panel 8. Joined by. The body side panel 9 is attached with a door (not shown) for closing the door opening 15 so as to be freely opened and closed.

  As shown in FIG. 3, the body side panel 9 includes an outer panel (body side panel outer) 21 that stands up along the front-rear direction outside the cab 2 in the vehicle width direction, and a front-rear direction inside the outer panel 21 in the vehicle width direction. And an inner panel (body side panel inner) 22 whose peripheral edge portion is joined to the outer panel 21 by spot welding or the like. The inner panel 22 is joined to the outer panel 21 (hereinafter referred to as a joined state), and forms a closed space 50 (see FIGS. 4 and 5) between the inner panel 22 and the outer panel 21. The outer door opening 29 (door opening 15) is reinforced.

  An outer door opening 29 penetrating in the vehicle width direction is formed in the outer panel 21. The outer panel 21 includes a front pillar outer portion 23 that stands up and down in front of the outer door opening 29, a roof side rail outer portion 24 that extends rearward from the upper end of the front pillar outer portion 23, and a front pillar outer portion 23. The rocker outer portion 25 extending rearward from the lower end portion and the rear pillar outer portion 26 standing up and down behind the outer door opening 29 are integrally formed. The outer door opening 29 functions as the door opening 15 together with the inner door opening 30 described later.

  The front pillar outer portion 23 includes an outer vertical portion 27 that extends in a substantially vertical direction at the front end of the outer panel 21, and an outer slope that extends obliquely rearward and upward from the upper end of the outer vertical portion 27 and continues to the front end of the roof side rail outer portion 24. Part 28. The side edge portion of the front window 4 is bonded to the outer inclined portion 28 of the front pillar outer portion 23 with an adhesive (see FIG. 1). The front pillar outer portion 23 includes a side plate portion 23a that extends in the vehicle width direction, a front plate portion 23b that is bent from the front end edge of the side plate portion 23a and extends inward in the vehicle width direction, and a rear end edge of the side plate portion 23a. A rear plate portion 23c (see FIG. 5) that bends and extends inward in the vehicle width direction, and a flange portion (joining region) 23d (see FIG. 5) that bends from the inner end in the vehicle width direction of the rear plate portion 23c and extends backward. Formed by. That is, the front pillar outer portion 23 bulges outward in the vehicle width direction by the side plate portion 23a, the front plate portion 23b, and the rear plate portion 23c. The rear end edge of the flange portion 23 d defines the front edge of the outer door opening 29.

  The roof side rail outer portion 24 includes a side plate portion 24a extending crossing in the vehicle width direction, an upper plate portion 24b bent from the upper edge of the side plate portion 24a and extending inward in the vehicle width direction, and a lower edge of the side plate portion 24a. It is formed by a lower plate portion 24c (see FIG. 4) that bends and extends inward in the vehicle width direction, and a flange portion (joining region) 24d that bends from the inner end in the vehicle width direction of the lower plate portion 24c and extends downward. That is, the roof side rail outer portion 24 bulges outward in the vehicle width direction by the side plate portion 24a, the upper plate portion 24b, and the lower plate portion 24c. The upper plate part 24b of the roof side rail outer part 24 overlaps with the outer end edge part (one side edge part) 5b in the vehicle width direction of the roof panel 5 in surface contact from below (see FIG. 4). The lower end edge of the flange portion 24 d defines the upper edge of the outer door opening 29.

  An inner door opening 30 is formed in the inner panel 22. The inner door opening 30 is disposed at substantially the same position as the outer door opening 29 in the joined state, and forms the door opening 15 together with the outer door opening 29. The inner panel 22 includes a front pillar inner portion 33 disposed on the inner side in the vehicle width direction of the front pillar outer portion 23 in a joined state, and a roof side rail inner portion 34 disposed on the inner side in the vehicle width direction of the roof side rail outer portion. Have

  The front pillar inner portion 33 includes a front plate portion 33b that overlaps the front plate portion 23b of the front pillar outer portion 23 in surface contact from the rear, and a side plate portion 33a that extends rearward from the outer edge in the vehicle width direction of the front plate portion 33b. And has a substantially L-shaped cross section. The front plate portion 33b of the front pillar inner portion 33 overlaps with the outer end edge portion (one side edge portion) 6b in the vehicle width direction of the dash panel 6 in surface contact from the front. The front plate portion 23b of the front pillar outer portion 23 overlaps with the front side of the front plate portion 33b of the front pillar inner portion 33 (see FIG. 5). The front plate portion 33b of the front pillar inner portion 33, the front plate portion 23b of the front pillar outer portion 23, and the outer end edge portion 6b of the dash panel 6 are joined by spot welding or the like in a state of overlapping in the front-rear direction (see FIG. 5). The front plate inner side 33 has a side plate portion 33a, which is disposed in the vehicle width direction inner side of the side plate portion 23a of the front pillar outer portion 23 in the joined state and is opposed to the front plate 35 and the front region. A rear region (joining region) 36 extending from 35 to the front end edge of the rear inner door opening 30 and overlapping the flange portion 23d of the front pillar outer portion 23 from the inner side in the vehicle width direction. The front region 35 of the side plate portion 33a of the front pillar inner portion 33 forms a closed cross section in a joined state together with the side plate portion 23a, the front plate portion 23b, and the rear plate portion 23c of the front pillar outer portion 23 (see FIG. 5).

  The roof side rail inner portion 34 includes an upper plate portion 34b that is in surface contact with the inner edge of the upper plate portion 24b of the upper plate portion 24b of the roof side rail outer portion 24 from the lower side and overlaps, and a vehicle width direction of the upper plate portion 34b. The side plate portion 34a extends downward from the outer edge, and is formed in a substantially L-shaped cross section. The upper plate portion 34b of the roof side rail inner portion 34, the upper plate portion 24b of the roof side rail outer portion 24, and the outer end edge portion 5b of the roof panel 5 are joined by spot welding or the like in a state where they overlap in the vertical direction. (See FIG. 4). The side plate portion 34a of the roof side rail inner portion 34 is disposed inside the side plate portion 24a of the roof side rail outer portion 24 in the joined state in the vehicle width direction, and is opposed to the upper region 37 in a state of being separated from the side plate portion 24a. A lower region (joining region) 38 that extends from the upper region 37 to the upper end edge of the lower inner door opening 30 and overlaps the flange portion 24d of the roof side rail outer portion 24 from the inner side in the vehicle width direction. The upper region 37 of the side plate portion 34a of the roof side rail inner portion 34 forms a closed cross section in the joined state together with the side plate portion 24a, the upper plate portion 24b, and the lower plate portion 24c of the roof side rail outer portion 24 (see FIG. 4). ).

  As shown in FIGS. 2 and 3, below the front edge 5 a of the roof panel 5, a front header panel (main reinforcing portion of the upper reinforcing panel) 16 extending in the vehicle width direction and the vehicle of the front header panel 16 are provided. A pair of left and right extension panels (extension portions of the upper reinforcing panel) 20 that are joined to both ends in the width direction are disposed, and a dash upper that extends in the vehicle width direction is behind the upper edge 6a of the dash panel 6. A panel (lower reinforcing panel) 32 is arranged. The left and right extension panels 20 are provided symmetrically on the left and right sides of the track 1 and have substantially the same configuration. Therefore, the left side will be described below, and the description on the right side will be omitted.

  As shown in FIGS. 3 and 4, the front header panel 16 includes a front end edge 17 and a rear end edge 18 that are joined to the lower surface of the front end edge 5 a of the roof panel 5 by spot welding or the like, and a front end edge 17. And the rear end edge portion 18, and a recessed portion 19 recessed downward, and a closed cross section is formed between the roof panel 5 and the roof panel 5. The front header panel 16 extends in the vehicle width direction in the vicinity of the upper edge of the front window opening 12 and reinforces the front end edge portion 5 a of the roof panel 5.

  The extension panel 20 is formed in a substantially L-shaped cross section integrally including the upper plate portion 39 and the side plate portion 40, and is disposed on the inner side in the vehicle width direction than the inner panel 22. The upper plate portion 39 of the extension panel 20 is joined by spot welding or the like with its inner end overlapping the vehicle width direction outer end (one end) 16a of the front header panel 16 from below. The panel 16 extends outward in the vehicle width direction from the vehicle width direction outer end portion 16a. The outer end in the vehicle width direction of the upper plate portion 39 of the extension panel 20 is on the inner surface 31 in the vehicle width direction of the inner panel 22 (the inner surface in the vehicle width direction of the upper region 37 of the side plate portion 34a of the roof side rail inner portion 34). Abut. The side plate portion 40 of the extension panel 20 is bent downward (door opening 15 side) from the outer end of the upper plate portion 39 in the vehicle width direction, and above the door opening 15 along the inner side surface 31 of the inner panel 22 in the vehicle width direction. Extends to the edge. That is, the extension panel 20 extends downward continuously from the vehicle width direction outer end portion 16a of the front header panel 16.

  As shown in FIG. 4, the side plate portion 40 of the extension panel 20 is in surface contact with the lower region (other joining region) 46 of the upper region 37 of the side plate portion 34 a of the roof side rail inner portion 34 from the inner side in the vehicle width direction. Thus, there are an upper region (another joining region) 44 that overlaps and a lower region (joining region) 45 that is in surface contact with the lower region 38 of the side plate portion 34a of the roof side rail inner portion 34 from the inner side in the vehicle width direction. The upper region 44 of the side plate portion 40 of the extension panel 20 and the lower region 46 of the upper region 37 of the roof side rail inner portion 34 are joined by spot welding or the like. That is, the upper region 44 of the side plate portion 40 of the extension panel 20 and the lower region 46 of the roof side rail inner portion 34 are joined to each other in the vehicle width direction without overlapping the outer panel 21. The lower region 45 of the side plate portion 40 of the extension panel 20, the lower region 38 of the inner panel 22, and the flange portion 24 d of the outer panel 21 are joined by spot welding or the like in a state where they overlap each other in the vehicle width direction. In the region where the side plate portion 40 of the extension panel 20, the lower region 38 of the inner panel 22, and the flange portion 24 d of the outer panel 21 overlap, three panels (extension panel 20, inner panel 22, and outer panel 21) The three panels may be joined together by spot welding or the like in the overlapped state, or two of the three panels are joined by spot welding or the like first, and the two joined panels Three panels may be joined by joining one remaining panel to the panel by spot welding or the like.

  As shown in FIGS. 2 and 3, the dash upper panel 32 includes a front plate portion (main reinforcing portion) 42 extending in the vehicle width direction and a pair of left and right side plates extending rearward from both ends of the front plate portion 42 in the vehicle width direction. Part (extension part) 43. Since the left and right side plate portions 43 are symmetrically provided on the left and right sides of the track 1 and have substantially the same configuration, only the left side will be described below and the description on the right side will be omitted.

  The front plate portion 42 of the dash upper panel 32 has a lower end edge portion 41 that extends in the vehicle width direction and is joined to the rear surface of the upper end edge portion 6a of the dash panel 6 by spot welding or the like. Extends in the vehicle width direction in the vicinity of, and reinforces the upper edge 6a of the dash panel 6. Both end portions in the vehicle width direction of the front plate portion 42 of the dash upper panel 32 extend obliquely upward toward the outer side in the vehicle width direction, and the front ends thereof are the inner side surfaces 31 in the vehicle width direction of the inner panel 22 (the side plates of the front pillar inner portion 33). It abuts on the vehicle lateral direction inner surface of the front region 35 of the portion 33a (see FIG. 5).

  As shown in FIG. 5, the side plate portion 43 of the dash upper panel 32 bends from the outer end portion (one end portion) in the vehicle width direction of the front plate portion 42 to the rear side (door opening 15 side). Extends to the front edge of the door opening 15 along the inner side surface 31 in the vehicle width direction. The side plate portion 43 of the dash upper panel 32 has a front region (others) that overlaps with the rear region (other joint region) 47 of the front region 35 of the side plate portion 33a of the front pillar inner portion 33 in surface contact from the vehicle width direction inside. 48) and a rear region (joining region) 49 that overlaps the rear region 36 of the side plate portion 33a of the front pillar inner portion 33 in surface contact from the vehicle width direction inner side. The front region 48 of the side plate portion 43 of the dash upper panel 32 and the rear region 47 of the front region 35 of the inner panel 22 are joined by spot welding or the like. That is, the front region 48 of the side plate portion 43 of the dash upper panel 32 and the rear region 47 of the front region 35 of the inner panel 22 are joined to each other in the vehicle width direction without overlapping the outer panel 21. The rear region 49 of the side plate portion 43 of the dash upper panel 32, the rear region 36 of the inner panel 22, and the flange portion 23d of the outer panel 21 are joined by spot welding or the like in a state of overlapping each other in the vehicle width direction. . In the region where the side plate portion 43 of the dash upper panel 32, the rear region 36 of the inner panel 22, and the flange portion 23d of the outer panel 21 overlap, three panels (the dash upper panel 32, the inner panel 22, and the outer panel 21). ) May be joined together by spot welding or the like, or two of the three panels may be joined together by spot welding or the like first. Three panels may be joined by joining the remaining one panel to the two panels by spot welding or the like.

  In the panel structure 10 configured as described above, when a force for deforming the front window opening 12 (for example, a force for twisting the cab 2) is input to the cab 2, the front header panel near the upper edge of the front window opening 12 is input. The force received by 16 acts on the body side panel 9 side via the extension panel 20. Since the side plate portion 40 of the extension panel 20 is joined at a position where the inner panel 22 and the outer panel 21 on the body side panel 9 side overlap, the side plate portion 40 of the extension panel 20 is joined only on the inner panel 22. Compared to the above, the support rigidity of the front header panel 16 and the extension panel 20 (hereinafter referred to as the front header panel 16 or the like) by the body side panel 9 is high, and even if a force that deforms the front window opening 12 acts on the cab 2. Deformation of the body side panel 9 is difficult to occur. In this way, the rigidity of supporting the front header panel 16 and the like by the body side panel 9 can be increased without increasing the thickness of the inner panel 22 or adding a reinforcing member, thereby suppressing an increase in the weight of the cab 2. However, the rigidity required for the cab 2 can be ensured.

  Further, when a force for deforming the front window opening 12 is input to the cab 2, the force received by the dash upper panel 32 near the lower edge of the front window opening 12 is applied from the side plate portion 43 of the dash upper panel 32 to the body side panel 9. Act on the side. Since the side plate portion 43 of the dash upper panel 32 overlaps and joins the position where the inner panel 22 and the outer panel 21 overlap, the side plate portion 43 of the dash upper panel 32 overlaps only the inner panel 22 and joins. Thus, the support rigidity of the dash upper panel 32 by the body side panel 9 is high, and even if the force that deforms the front window opening 12 acts on the cab 2, the body side panel 9 is hardly deformed. As described above, the support rigidity of the dash upper panel 32 by the body side panel 9 can be increased without increasing the thickness of the inner panel 22 or adding a reinforcing member, so that an increase in the weight of the cab 2 is suppressed. The rigidity required for the cab 2 can be ensured.

  Further, the upper region 44 of the side plate portion 40 of the extension panel 20 and the lower region 46 of the roof side rail inner portion 34 are joined to each other in the vehicle width direction. That is, the side plate portion 40 of the extension panel 20 includes, in addition to the lower region 45 of the side plate portion 40, an end portion joined to the vehicle width direction outer end portion 16 a of the front header panel 16 and a lower side of the side plate portion 40 of the extension panel 20. The upper region 44 between the region 45 is also joined to the body side panel 9. Further, the front region 48 of the side plate portion 43 of the dash upper panel 32 and the rear region 47 of the front region 35 of the inner panel 22 are overlapped and joined to each other in the vehicle width direction. That is, the side plate portion 43 of the dash upper panel 32 has a body side in a front region 48 between the front plate portion 43 of the dash upper panel 32 and the rear region 49 of the side plate portion 43 in addition to the rear region 49 of the side plate portion 43. Joined to the panel 9. Therefore, the support rigidity of the dash upper panel 32 and the front header panel 16 by the body side panel 9 is further increased, and the torsional rigidity of the cab 2 is further improved.

  Further, the front header panel 16 and the like reinforce the front edge 5a of the roof panel 5 that defines the upper edge of the front window opening 12, and the upper end of the dash panel 6 that defines the lower edge of the front window opening 12 by the dash upper panel 32. The edge portion 6a is reinforced. That is, since both the front header panel 16 and the like and the dash upper panel 32 reinforce the periphery of the front window opening 12, only one of the panels reinforces the periphery of the front window opening 12, compared with the case where the front window opening 12 The torsional rigidity around 12 is increased, and the torsional rigidity of the cab 2 is improved.

  Next, a description will be given of the result of simulation regarding the torsional rigidity and weight of the cab using the analysis models A and B of the two cabs. In the analysis model A, the front header panel and the upper dash panel (hereinafter referred to as the upper and lower reinforcing panels) are joined to the inner panel of the body side panel at the position where the inner panel and the outer panel overlap in the vehicle width direction. This is an analysis model of a cab bonded only to a position where the outer panel does not overlap (for example, the front region 35 or the upper region 37 of the inner panel 22). The analysis model B is a cab analysis model to which the panel structure 10 according to the present embodiment is applied.

  In the simulation on the torsional rigidity of the cab, the thicknesses of the various panels (inner panel, outer panel, etc.) of the two analysis models A and B configured on the computer are set to predetermined thicknesses, and the two analysis models A and B The two rear cab mounts on the rear end side of the cab and the front cab mount on one side of the front end side are fixed to each of these, and a predetermined torsional load is applied to the front cab mount on the other side that is not fixed. The amount of deformation around the opening (cab torsional rigidity) was calculated. As a result, when the thicknesses of the analysis models A and B were the same, it was confirmed that the analysis model B was higher in the torsional rigidity of the cab by about 1.7% than the analysis model A.

  Further, in the simulation regarding the weight of the cab, the weight of the analysis model B in a state where the various panels constituting the cab of the analysis model B are thinned and the torsional rigidity of the analysis model B is matched with the torsional rigidity of the analysis model A The weight of the analysis model A was calculated and compared. That is, the weights of the analysis models A and B when the predetermined torsional rigidity was ensured were calculated and compared. As a result, it was confirmed that the weight of the cab of the analysis model B was about 1.5% lighter than the analysis model A.

  As a result of the above simulation, by joining the upper and lower reinforcing panels to the position where the inner panel and the outer panel overlap, the thickness of the various panels constituting the cab can be greatly suppressed, and it is necessary without causing an increase in weight. It was verified that the torsional rigidity of the cab can be secured.

  Therefore, according to the present embodiment, the rigidity necessary for the cab 2 can be ensured while suppressing an increase in the weight of the cab 2.

  As mentioned above, although this invention was demonstrated based on the said embodiment, this invention is not limited to the content of the said embodiment, Of course, it can change suitably in the range which does not deviate from this invention. That is, it is needless to say that other embodiments, examples, operation techniques, and the like made by those skilled in the art based on this embodiment are all included in the scope of the present invention.

  For example, in the above embodiment, the vehicle body panel structure of the present invention is applied to the cab 2 of the cab-over type truck 1, but the vehicle body panel structure is applied to a vehicle body of a van type passenger car or a vehicle body of a passenger car equipped with a bonnet. You may apply to.

  In the above embodiment, the upper reinforcing panel that reinforces the front edge 5a of the roof panel 5 is formed by separate parts (the front header panel 16 and the extension panel 20). The upper reinforcement panel integrally formed like the lower reinforcement panel (dash upper panel 32) which reinforces 6a may be sufficient. Further, the lower reinforcing panel may be formed by a plurality of separate parts.

  Further, the total of four locations on both sides of the upper reinforcing panel in the vehicle width direction and on both sides of the lower reinforcing panel in the vehicle width direction do not have to be joined to the position where the inner panel 22 and the outer panel 21 overlap. Only two locations on both sides in the vehicle width direction of either the reinforcing panel or the lower reinforcing panel may be joined at positions where the inner panel 22 and the outer panel 21 overlap.

  Further, the upper region 44 of the side plate portion 40 of the extension panel 20 and the lower region 46 of the roof side rail inner portion 34 may not be joined. Further, the front region 48 of the side plate portion 43 of the dash upper panel 32 and the rear region 47 of the front region 35 of the inner panel 22 may not be joined.

1: Truck 2: Cab (body)
4: Front window 5: Roof panel 5a: Front edge of roof panel 6: Dash panel 6a: Upper edge of dash panel 9: Body side panel 10: Panel structure of vehicle body 11: Vehicle compartment 12: Front window opening 16: Front header panel (main reinforcing part of upper reinforcing panel)
20: A pair of left and right extension panels (extension part of the upper reinforcing panel)
21: Outer panel (Body side panel outer)
22: Inner panel (Body side panel inner)
23d: Front pillar outer flange portion (joint region)
24d: Roof side rail outer flange portion (joining region)
32: Dash upper panel (lower reinforcement panel)
33a: Side plate portion 34a of the front pillar inner portion: Side plate portion 35 of the roof side rail inner portion 35: Front region of the side plate portion of the front pillar inner portion 36: Rear region (joining region) of the side plate portion of the front pillar inner portion
37: Upper region of the side plate portion of the roof side rail inner portion 38: Lower region (joining region) of the side plate portion of the roof side rail inner portion
40: Side panel portion of the extension panel 42: Front plate portion (main reinforcing portion) of the dash upper panel
43: Side plate part (extension part) of the dash upper panel
44: Upper region of the side plate portion of the extension panel (other bonding region)
45: Lower region (joining region) of side plate portion of extension panel
46: Lower region (other joining region) of the upper region of the side plate portion of the roof side rail inner portion
47: Rear region (other joining region) of front region of side plate portion of front pillar inner portion
48: Front region of the side plate portion of the dash upper panel (other joint region)
49: Rear region (joining region) of side plate portion of dash upper panel
50: Closed space

Claims (4)

A vehicle body panel structure having a front window opening in front of the passenger compartment,
A roof panel having a front edge that defines an upper edge of the front window opening, and extending rearward from the front edge to cover the vehicle compartment from above;
A body side panel having an upper edge joined to a side edge on one side of the roof panel in the vehicle width direction and standing along the front-rear direction on the one side of the vehicle compartment;
A main reinforcing portion that is joined to the lower surface of the front edge portion of the roof panel and extends in the vehicle width direction in the vicinity of the upper edge of the front window opening, and extends downward from the one end portion of the main reinforcing portion. An upper reinforcing panel that is disposed on the inner side in the vehicle width direction than the body side panel and reinforces the front edge portion of the roof panel.
The body side panel includes a body side panel outer, and a body side panel inner disposed inside the body side panel outer to form a closed space between the body side panel outer and the body side panel outer,
The vehicle body panel structure, wherein the body side panel outer, the body side panel inner, and the extended portion of the upper reinforcing panel have joint regions that are joined to each other in the vehicle width direction. A vehicle body panel structure having a front window opening in front of the passenger compartment,
A dash panel that extends in the vehicle width direction and has an upper end edge that defines a lower edge of the front window opening, extends downward from the upper end edge, and stands in front of the vehicle compartment;
A body side panel having a front edge joined to an outer edge on one side in the vehicle width direction of the dash panel, and standing along the front-rear direction on the one side of the vehicle compartment;
A main reinforcing portion joined to a rear surface of the upper end edge of the dash panel and extending in the vehicle width direction in the vicinity of the lower edge of the front window opening; and an extension extending rearward from the one end of the main reinforcing portion. A lower reinforcing panel that is disposed on the inner side in the vehicle width direction than the body side panel and reinforces the upper edge of the dash panel,
The body side panel includes a body side panel outer, and a body side panel inner disposed inside the body side panel outer to form a closed space between the body side panel outer and the body side panel outer,
The vehicle body panel structure characterized in that the body side panel outer, the body side panel inner, and the extended portion of the lower reinforcing panel have joint regions that are joined to each other in the vehicle width direction. . The vehicle body panel structure according to claim 1,
A dash panel that extends in the vehicle width direction and has an upper end edge that defines a lower edge of the front window opening, extends downward from the upper end edge, and stands in front of the vehicle compartment;
A main reinforcing portion joined to a rear surface of the upper end edge of the dash panel and extending in the vehicle width direction in the vicinity of the lower edge of the front window opening; and an extension extending rearward from the one end of the main reinforcing portion. A lower reinforcing panel that is disposed on the inner side in the vehicle width direction than the body side panel and reinforces the upper edge of the dash panel,
The vehicle body panel structure characterized in that the body side panel outer, the body side panel inner, and the extended portion of the lower reinforcing panel have joint regions that are joined to each other in the vehicle width direction. . The vehicle body panel structure according to any one of claims 1 to 3,
The body side panel inner and the extending portion of the reinforcing panel are connected to each other in the vehicle width direction without overlapping the body side panel outer, and the other joining regions and the main reinforcement are joined together. A panel structure for a vehicle body, characterized in that it is provided between the two parts.

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