Vehicle side body structure

Abstract

To provide a vehicular side body structure which comprises a configuration that suppresses the lower end portion of a side door from being deformed to be rolled up even if the side door receives a very large impact load from the side.SOLUTION: A vehicular side body structure is configured so that, when a force that deforms a side door 5 inward in a vehicle width direction is applied to the side door 5 in a state that a second engaging part 51 enters a gap 26 along a deformation of the side door 5 in the vehicle width direction and a first engaging part 52 and the second engaging part 51 are engaged with a first to-be-engaged part 29 and a second to-be-engaged part 12, respectively, engagement means 31 is bend around, as a fulcrum, the first engaging part 52 so as to prevent the side door 5 from being rolled up.SELECTED DRAWING: Figure 5

Description

[Technical Field]

[0001] The present invention relates to a side body structure of a vehicle. [Background technology]

[0002] A vehicle body side structure generally includes a side door that is hingedly attached to the vehicle body so as to be able to open and close, and side sill rails that are provided on both left and right ends of the vehicle floor panel in the vehicle width direction, on the inner side of the side door in the vehicle width direction, so as to face the lower part of the side door. Such a vehicle body side structure is designed to protect occupants in the survival space by maintaining as much survival space as possible within the vehicle cabin when the vehicle side door is subjected to a lateral impact load, for example, due to a collision with another vehicle.

[0003] A conventional vehicle body side structure is known in which the side door abuts against the side sill rain and deforms together with the side sill rain when subjected to a side impact load. This type of vehicle body side structure is designed so that when the side door receives a side impact load, it continues to abut against the side sill rain, dispersing the impact load throughout the vehicle via the side door and the side sill rain. This ensures the safety of passengers inside the vehicle as much as possible.

[0004] On the other hand, when a side door receives a lateral impact load, the bottom edge of the side door may be lifted up and separated from the side sill rail, causing the side door to overstep the side sill rail and enter the vehicle interior.

[0005] To address this issue, for example, Patent Document 1 discloses a side vehicle body structure in which a protrusion, such as a catcher pin, on the side door engages with a hole in the side sill rain when the side door receives a lateral impact load. By engaging the protrusion on the side door with the hole on the side sill rain, the side door continues to abut against the side sill rain, preventing the side door from going over the side sill rain and entering the vehicle interior. [Prior art documents] [Patent documents]

[0006] [Patent Document 1] U.S. Patent No. 8661617 Summary of the Invention [Problem to be solved by the invention]

[0007] However, in the structure of Patent Document 1, when the side door receives a large impact load from the side, the protrusion on the side door initially fits into the hole on the side sill rail, but if the lower end of the side door then deforms and is further lifted up, the protrusion may come out of the hole and the side door may go over the side sill rail and enter the vehicle interior.

[0008] Therefore, an object of the present invention is to provide a side body structure for a vehicle that has a configuration that prevents the lower end of the side door from being flipped up even if the side door is subjected to a large impact load from the side. [Means for solving the problem]

[0009] In order to achieve this object, the present invention is characterized by the following configuration.

[0010] First, the present invention provides a side body structure for a vehicle including a side door and a side sill rain located on the inner side of the side door in the vehicle width direction and facing a lower portion of the side door, The side sill rein is a first engaged portion extending in the vehicle length direction; and an engaged means having a second engaged portion disposed below the first engaged portion with a gap between the first engaged portion and the second engaged portion and located more inward in the vehicle width direction than the first engaged portion, The side door is The side door is closed, and the engaging means extends toward the gap on the outer side of the side sill rain in the vehicle width direction, and has a first engaging portion and a second engaging portion that are spaced apart from each other on the outer side and the inner side in the vehicle width direction, respectively. The engaging means is configured such that, when a force that deforms the side door inward in the vehicle width direction acts on the side door, the second engaging portion enters the gap in accordance with the deformation of the side door in the vehicle width direction, and the first engaging portion and the second engaging portion engage with the first engaged portion and the second engaged portion, respectively, and bend around the first engaging portion as a fulcrum, thereby preventing the side door from being turned up. Crate , The side sill rein has a side sill rein main body and an engaged member fixed on the side sill rein main body, the engaged member forms the first engaged portion, The upper surface of the side sill rein body forms the second engaged portion, The side door has a bottom surface facing the top surface of the side sill rein body, the engaging means is fixed to the bottom surface of the side door, the engaging means includes a second portion extending in the vehicle width direction and including the second engaging portion on the inner side in the vehicle width direction, a first portion extending upward from an outer end portion of the second portion in the vehicle width direction and forming the first engaging portion together with the second portion at a boundary with the second portion, and a third portion integrally connected to an upper end of the first portion and extending inward in the vehicle width direction from the upper end of the first portion, A curved corner portion that curves downward from the upper surface toward the outer side surface is provided at a connecting portion between the upper surface of the side sill rein body and the outer side surface of the side sill rein body, The vehicle width direction inner end portion of the second portion of the engagement means is configured to be guided inward in the vehicle width direction along the upper surface of the side sill rein body while contacting the curved corner portion when the side door is deformed. It is characterized by:

[0011] According to the present invention, when a force that deforms the side door toward the inside in the vehicle width direction acts on the side door, the second engaging portion of the engaging means provided on the side door enters the gap between the first engaged portion and the second engaged portion of the engaging means provided on the side sill rain as the side door deforms in the vehicle width direction, and the first engaging portion and the second engaging portion of the engaging means engage with the first engaged portion and the second engaged portion, respectively, and bend around the first engaging portion as a fulcrum, preventing the side door from lifting up. Therefore, even if the side door receives a large impact load from the side, the second engaging portion remains in the gap and is held there, preventing the bottom end of the side door from lifting up. According to this configuration, the engageable member fixed on the side sill rein body forms the first engageable portion, and the upper surface of the side sill rein body forms the second engageable portion. Therefore, even if the side door receives a large impact load from the side, the second engageable portion is held in place in the gap between the engageable member and the upper surface of the side sill rein body without coming off, thereby preventing the lower end of the side door from being flipped up. With this configuration, because the engaging means is fixed to the bottom surface of the side door, even if the side door receives a large impact load from the side, the energy of the impact load is transmitted to the side sill rain via the side door and the engaging means, making it difficult for the energy to be transmitted to vehicle body structures other than the side door and the side sill rain, thereby suppressing deformation of vehicle body structures other than the side door and the side sill rain. According to this configuration, the connection between the upper surface and the outer side surface of the side sill rein body has a curved corner that curves downward as it moves from the upper surface to the outer side surface, so that even if the side door receives a large impact load from the side, the inner end portion of the second part of the engagement portion in the vehicle width direction is easily guided inward in the vehicle width direction along the upper surface of the side sill rein body.

[0012] Furthermore, an outer end portion in the vehicle width direction of the first engaged portion may be located more outward in the vehicle width direction than an outer end portion in the vehicle width direction of the second engaged portion.

[0013] According to this configuration, the outer end of the first engaged portion in the vehicle width direction is positioned further outward in the vehicle width direction than the outer end of the second engaged portion, so that even if the side door receives a large impact load from the side, the outer end of the first engaged portion in the vehicle width direction suppresses the rotation of the engaging means, further preventing the lower end of the side door from being flipped up.

[0018] Also ,before A support member is fixed to the side door, the support member has a support member upper surface facing the bottom surface of the side door, The third portion may be fixed to an upper surface of the support member.

[0019] According to this configuration, because the third portion of the engaging means is fixed to the upper surface of the support member that is fixed to the side door, even if the side door receives a large impact load from the side, stress concentration on the side door to which the third portion is attached via the support member is suppressed, so the engaging means and the support member do not come off the side door, and the second portion including the second engaging portion of the engaging means is stably held in the gap between the upper surface of the side sill rein body and the engaged member, thereby preventing the bottom end of the side door from being turned up.

[0020] The support member is formed by bending a single metal plate, The support member may include a support member reinforcing portion that is curved or bent upward or downward when viewed in the vehicle width direction.

[0021] According to this configuration, the support member has a support member reinforcement portion that is curved or bent upward or downward when viewed from the vehicle width direction, so that even if the side door receives a large impact load from the side, the side door to which the support member is attached is further prevented from lifting up. Therefore, the support member does not come off the side door, and the second portion of the engaging means is stably held in the gap between the upper surface of the side sill rein body and the engaged member, thereby preventing the lower end of the side door from lifting up.

[0024] The engaged member has a front end portion and a rear end portion in the vehicle length direction, The front end portion and the rear end portion may be fixed to the upper surface or the outer side surface of the side sill rein body, or both.

[0025] With this configuration, the front and rear ends of the engaged member are fixed to the upper surface or outer side surface of the side sill rein body, or both. This prevents stress concentration on the side sill rein body to which the engaged member is attached, even if the side door receives a large lateral impact load. This prevents the engaged member from coming off the side sill rein body, and the second portion of the engaging means is stably held in the gap between the upper surface of the side sill rein body and the engaged member. This prevents the bottom end of the side door from being turned up.

[0026] The engaged member is formed by bending a single metal plate, The engaged member may include an engaged member reinforcing portion that is curved or bent upward or downward when viewed in the vehicle width direction.

[0027] According to this configuration, the engaged member has an engaged member reinforcement portion that is curved or bent upward or downward when viewed from the vehicle width direction, so that even if the side door receives a large impact load from the side, the side sill rein body to which the engaged member is attached is further prevented from lifting up. This prevents the engaged member from coming off the side sill rein body, and the second portion of the engaging means is stably held in the gap between the upper surface of the side sill rein body and the engaged member. This prevents the bottom end of the side door from lifting up.

[0028] The side sill rein body may have sufficient rigidity to prevent the deformed engaging means from slipping out of the gap when the side door is deformed.

[0029] With this configuration, the side sill rein body has sufficient rigidity to prevent the deformed engaging means from slipping out of the gap when the side door is deformed, so even if the side door receives a large impact load from the side, the upper surface of the side sill rein body and the engaged member, which have sufficient rigidity, can stably hold the deformed engaging means, thereby preventing the bottom end of the side door from being turned up.

[0030] A side door reinforcing portion may be attached to a lower portion of the side door from the outer side in the vehicle width direction.

[0031] According to this configuration, the side door reinforcement is attached to the lower part of the side door from the outside in the vehicle width direction, so that the side door is less likely to deform even if the side door receives a large impact load from the side, thereby further preventing the lower end of the side door from being turned up.

[0032] In addition, a B-pillar is located behind the side door in the vehicle length direction, an impact bar inclined downward from the front to the rear in the vehicle length direction is attached to the side door from the outer side in the vehicle width direction above the engaging means, A connecting reinforcement member that connects the impact bar and the lower part of the side door vertically may be attached from the outside in the vehicle width direction between the engaging means and the B-pillar.

[0033] According to this configuration, the connecting reinforcement member that connects the impact bar attached to the side door and the lower part of the side door from the outside in the vehicle width direction is attached between the engagement means and the B-pillar located rearward of the side door in the vehicle length direction, so that the side door is less likely to deform easily even if the side door receives a large impact load from the side, thereby further preventing the lower end of the side door from being lifted up.

[0034] Further, a cross member is attached to a lower portion of the vehicle, the cross member extending from the side sill rain toward an inner side in a vehicle width direction so as to be positioned at a center of the side door in a vehicle length direction, The engagement means may be disposed between the cross member and the B-pillar in the vehicle length direction.

[0035] According to this configuration, the engaging means is located between the cross member extending inward in the vehicle width direction from the side sill rain and the B-pillar in the vehicle length direction, so that the side door is less likely to deform even if it receives a large impact load from the side, thereby further preventing the bottom end of the side door from being turned up.

[0036] The side sill rein is provided with a cover that covers the engaging means, The strength of the engaging means and the cover may be determined so that the engaging means can break through the cover when the side door is deformed.

[0037] According to this configuration, the strength of the engaging means and the cover is determined so that the engaging means can break through the cover when the side door is deformed, so that when the side door receives an impact load from the side, the second engaging portion of the engaging means breaks through the cover and enters the gap between the first engaged portion and the second engaged portion of the engaged means.

[0038] The engaging means may be spaced outward in the vehicle width direction from the cover when the side door is closed and the side door is not deformed.

[0039] According to this configuration, when the side door is closed and not deformed, the engagement means is spaced away from the cover outward in the vehicle width direction, thereby maintaining the design of the side sill rain except when the side door receives an impact load from the side and the second engagement portion of the engagement means breaks through the cover. [Effects of the Invention]

[0040] Therefore, the vehicle side body structure according to the present invention has a configuration that prevents the lower end of the side door from being turned up even if the side door receives a large impact load from the side. [Brief explanation of the drawings]

[0041] [Figure 1]1 is a perspective view of a vehicle body structure according to an embodiment of the present invention; [Figure 2] 2 is a cross-sectional view of a side body structure of a vehicle taken along section II in FIG. 1. [Figure 3] FIG. 3 is a perspective view of the engaged member shown in FIG. 2. [Figure 4] FIG. 3 is a perspective view of the engaging means and the supporting member shown in FIG. 2. [Figure 5] 3 is a schematic view of the side body structure of the vehicle in FIG. 2 when deformed. [Figure 6] 3 is a schematic view illustrating a state in which the vehicle body side structure of the vehicle in FIG. 2 is deformed. FIG. [Figure 7] 3 is a schematic view illustrating a state in which the vehicle body side structure of the vehicle in FIG. 2 is deformed. FIG. [Figure 8] 3 is a schematic view illustrating a state in which the vehicle body side structure of the vehicle in FIG. 2 is deformed. FIG. [Figure 9] FIG. 3 is a side view showing the structure of the side door shown in FIG. 2. [Figure 10] FIG. 3 is a side view showing the structure of the side door shown in FIG. 2. DETAILED DESCRIPTION OF THE INVENTION

[0042] Hereinafter, an embodiment of the present invention will be described with reference to the accompanying drawings.

[0043] [Overall configuration] Fig. 1 is a perspective view of a vehicle body structure 1 according to an embodiment of the present invention. As shown in Fig. 1, the vehicle body structure 1 includes side vehicle body structures 2 located on the right and left sides in the vehicle width direction when the vehicle body structure 1 is viewed from the rear in the vehicle length direction toward the front in the vehicle length direction, and a floor panel 3 located inward in the vehicle width direction from the side vehicle body structure 2. Note that Fig. 1 only shows the side vehicle body structure 2 on the right side in the vehicle width direction, and the following description will be given of this right side vehicle body structure 2, but the description also applies to the left side vehicle body structure.

[0044] In this embodiment, the side body structure 2 comprises a door hinge 4 provided on the front side of the side body structure 2 in the vehicle length direction, a front side door 5 attached to the side body structure 2 by the door hinge 4 and located near the driver's seat or passenger seat on the front side in the vehicle length direction, and a side sill rain 6 provided on the outer end of the floor panel 3 in the vehicle width direction, inward of the front side door 5 in the vehicle width direction, so as to face the lower part of the front side door 5, and the front side door 5 is configured to be able to be opened and closed around an axis 7 of the door hinge 4 extending vertically.

[0045] A cross member 8 that connects the left and right side sill rails 6 to each other is attached to the upper surface of the floor panel 3 at a position facing approximately the center of the front side door 5 in the vehicle length direction.

[0046] FIG. 2 is a cross-sectional view of the vehicle side body structure 2 taken along section II in FIG.

[0047] [Side sill rain] 2, the side sill reinforcing member 6 includes a generally rectangular side sill reinforcing member body 9 with an internal cavity. The side sill reinforcing member body 9 includes a side sill inner member 10 located on the inner side in the vehicle width direction and having a hat-shaped cross section with an open outer side in the vehicle width direction, and a side sill outer member 11 located on the outer side in the vehicle width direction and also having a hat-shaped cross section with an open inner side in the vehicle width direction. The side sill inner member 10 and the side sill outer member 11 are connected at their upper and lower ends by welding or the like.

[0048] The side sill outer 11 has a side sill outer upper surface portion 12 extending almost horizontally and a side sill outer outer side surface portion 13 extending almost vertically downward from the outer end of the side sill outer upper surface portion 12 in the vehicle width direction, and the connecting portion between the side sill outer upper surface portion 12 (second engaged portion) and the side sill outer outer side surface portion 13 is a curved corner portion 14.

[0049] In this embodiment, an engaging member 15 is attached to the outside of the side sill outer 11 in the vehicle width direction so as to cover the curved corner portion 14 of the side sill outer 11, the upper surface portion 12 of the side sill outer, and the outer side surface portion 13 of the side sill outer while leaving a gap between these portions.

[0050] [Engaged member] 2 and 3, the engaged member 15 is formed, for example, by processing a single metal plate (e.g., a 1.0 mm thick steel plate) into a substantially L-shape. Specifically, the engaged member 15 has a horizontal portion 16 extending substantially parallel to the side sill outer upper surface portion 12, and a vertical portion 17 extending substantially parallel to the side sill outer outer side surface portion 13. As shown in detail in FIG. 3, the horizontal portion 16 has a front end portion 18 in the vehicle length direction, a rear end portion 19 in the vehicle length direction, and a central portion 20 located between these two portions 18, 19, and the central portion 20 bulges upward, providing a reinforcing cross section that appears hat-shaped when viewed from the vehicle width direction. The vertical portion 17 includes a front end portion 21 in the vehicle length direction, a rear end portion 22 in the vehicle length direction, a lower portion 23, and a central portion 24 surrounded on three sides by these three portions 21, 22, and 23. The central portion 24 bulges outward in the vehicle width direction, forming a reinforcing cross section that appears hat-shaped when viewed from above. Hereinafter, these reinforcing cross sections will be referred to as "reinforcing portion 25." The bulging shape of the central portion 20 in the horizontal portion 16 and the bulging shape of the central portion 24 in the vertical portion 17 are continuous, forming a substantially L-shaped space 26 (see FIG. 2) inside the engaged member 15 that is continuous in the vehicle width direction as a whole.

[0051] Further, a center portion 24 of the vertical portion 17 of the engaged member 15 is formed with an elongated opening 28 extending in the vehicle length direction.

[0052] The engaged member 15 configured in this manner has a front end portion 18 and a rear end portion 19 of the horizontal portion 16 fixed to the side sill outer upper surface portion 12 by welding or the like, and a front end portion 21, a rear end portion 22, and a lower portion 23 of the vertical portion 17 fixed to the side sill outer outer side surface portion 13 by welding or the like, and a gap or space corresponding to an L-shaped space 26 is formed between the engaged member 15 and the side sill rain 6, extending continuously from the side sill outer upper surface portion 12 to the side sill outer outer side surface portion 13, straddling the curved corner portion 14. In addition, an upper edge (first engaged portion) 29 of an opening 28 formed in the central portion 24 of the vertical portion 17 faces near the apex of the curved corner portion 14 (the point of greatest curvature) in the horizontal direction. In this embodiment, the upper edge 29 (first engaged portion) of the opening 28 constitutes the "engaged means" together with the outer side sill upper surface portion 12 (second engaged portion).

[0053] As described above, the engaging member 15 is attached to the side sill outer 11 so as to cover the curved corner portion 14, the upper surface portion 12, and the outer side surface portion 13 of the side sill outer 11 with a gap therebetween, and therefore the outer end portion in the vehicle width direction of the upper edge 29 of the opening 28 is positioned further outward in the vehicle width direction than the outer end portion in the vehicle width direction of the upper surface portion 12 of the side sill outer.

[0054] In this embodiment, the engaged member 15 is made of a steel plate having a thickness of, for example, about 0.4 to 2.0 mm, preferably about 1.0 mm, as described above.

[0055] [cover] In the embodiment shown in Fig. 2, a concealing cover 30 is arranged on the outside of the engaged member 15 so as to cover the engaged member 15. As shown in the figure, the cover 30 is supported and fixed to the side sill rain 6 with a gap between it and the engaged member 15. As will be described later, the cover 30 is made of a relatively thin and soft material so that an engaging means (an engaging member 31, described later) provided on the front side door 5 can break through the cover 30 in the event of a side collision.

[0056] In this embodiment, the cover 30 is made of a steel plate having a thickness of, for example, about 0.4 to 2.0 mm, preferably about 1.0 mm.

[0057] [Front side door] 2, the front side door 5 includes an inner panel 32 located on the inner side in the vehicle width direction and an outer panel 33 located on the outer side in the vehicle width direction. A bottom portion 34 of the inner panel 32 faces the side sill outer upper surface portion 12 when the front side door 5 is closed, and is configured to face the engaged member 15 with a gap therebetween, and extends obliquely upward toward the inner side in the vehicle width direction from the lower end of the outer panel 33 facing the vicinity of the lower end of the engaged member 15.

[0058] [Supporting member] As shown in Fig. 2, a support member 35 that supports an engaging means (an engaging member 31, described later) is disposed in the space between the inner panel 32 and the outer panel 33. As shown in Fig. 4, the support member 35 is fixed to the upper surface of the bottom portion 34 of the inner panel 32. The support member 35 supports the engaging portion or engaging member 31 that cooperates with the side sill rain 6 to prevent the front side door 5 from turning up during a side collision.

[0059] The support member 35 is formed, for example, by processing a single metal plate (for example, a 1.0 mm thick steel plate) into an approximately L-shape, and has an approximately L-shape with a vertical portion 36 extending in an approximately vertical direction and a horizontal portion 37 extending in an approximately horizontal direction from the upper part of the vertical portion 36 toward the inside in the vehicle width direction so as to face the bottom 34 of the inner panel 32, and is fixed to the bottom 34 of the inner panel 32 by welding or the like.

[0060] In the support member 35, at the corner where the vertical portion 36 and the horizontal portion 37 intersect, a step portion 38 is formed by bending the portion constituting the corner at a substantially right angle.

[0061] Similar to the engaged member 15 described above, the horizontal portion 37 and stepped portion 38 of the support member 35 have a hat-shaped reinforced cross section (reinforced portion 39). Specifically, the horizontal portion 37 has a front end portion 40 in the vehicle length direction, a rear end portion 41 in the vehicle length direction, and a central portion 42 located between these two portions 40, 41, with the central portion 42 bulging upward to have a hat-shaped reinforced cross section. The stepped portion 38 has a front end portion 43 in the vehicle length direction, a rear end portion 44 in the vehicle length direction, and a central portion 45 located between these two portions 43, 44, with the central portion 45 bulging upward to have a hat-shaped reinforced cross section.

[0062] An opening 46 is formed in a central portion 45 of the stepped portion 38, facing the opening 28 of the engaged member 15 described above and having a length in the vehicle length direction substantially the same as that of the opening 28. Corresponding to the opening 46, as shown in Figure 2, an opening 47 is formed in the bottom portion 34 of the inner panel 32 that supports the support member 35 in a portion facing the opening 46 of the support member 35, the opening 47 having a length in the vehicle length direction substantially the same as that of the opening 46. Therefore, the three openings 28, 46, 47 are aligned in a row in the vehicle width direction and substantially horizontally.

[0063] [Engagement member] As shown in Fig. 2, the engaging member 31 is formed, for example, by processing a single metal plate (e.g., a 4.0 mm thick steel plate) into a bracket or channel shape, and has a vertically extending web (first portion) 48, and an upper flange (third portion) 49 and a lower flange (second portion) 50 that extend substantially parallel to each other in a substantially horizontal direction from the upper and lower ends of the web 48 toward the vehicle width direction inward. Therefore, the web 48 extends so as to vertically connect the vehicle width direction outer end of the lower flange 50 and the vehicle width direction outer end of the upper flange 49. In the engaging member 31 configured in this manner, the lower flange 50 passes through the opening 46 of the support member 35 and the opening 47 in the bottom portion 34 of the inner panel 32 and protrudes toward the vehicle width direction inward from the bottom portion 34 of the inner panel 32. The upper flange 49 is fixed to the upper surface of the horizontal portion 37 of the support member 35 by welding or the like (see Fig. 4).

[0064] The thickness of the engaging member 31, particularly the thickness of the lower flange 50 of the engaging member 31, is determined so that the tip of the lower flange 50 can break through the cover 30 in the event of a side collision, as will be described later.

[0065] [Operation] With this vehicle body structure, when a collision load acts on the front side door 5 from outside, the outer panel 33 of the front side door 5 deforms toward the passenger compartment, as shown in FIGS. 6 and 7 . Part of the collision load acting on the outer panel 33 is transferred to the bottom 34 of the inner panel 32. As a result, the bottom 34 of the inner panel 32 buckles and deforms in the vehicle width direction. This causes the support member 35 fixed to the bottom 34 of the inner panel 32 and the engaging member 31 fixed to the support member 35 to move toward the passenger compartment in response to the deformation of the bottom 34. As a result, the lower flange 50 of the engaging member 31 breaks through the cover 30 covering the side sill rein 6, enters the space 26 inside the opening 28 of the engaged member 15, and abuts against the curved corner 14 of the side sill rein 6 or its vicinity.

[0066] Thereafter, as the deformation of the inner panel 32 and the bottom 34 progresses further, the tip portion 51 (second engaging portion) of the lower flange 50 moves beyond the curved corner portion 14 of the side sill outer 11, sliding along the upper surface of the side sill outer upper surface portion 12 (second engaged portion), and the web 48 of the engaging member 31 comes into contact with the vertical portion 17 of the engaged member 15.

[0067] Next, as the inner panel 32 and the bottom 34 continue to deform, the engaging member 31 rotates along with these deformations. For example, the engaging member 31 shown in Fig. 5 rotates clockwise. As a result, the lower corner of the engaging member 31 (i.e., the connecting portion 52 (first engaging portion) between the web 48 and the lower flange 50) engages with the upper edge 29 (first engaged portion) of the opening 28 formed in the engaged member 15.

[0068] Next, as the deformation of the inner panel 32 and the bottom portion 34 progresses further, as shown in FIG. 8 , the connecting portion 52 (first engaging portion) between the web 48 and the lower flange 50 engages with the upper edge 29 (first engaged portion) of the opening 28, and the tip portion 51 (second engaging portion) of the lower flange 50 abuts against the side sill outer upper surface portion 12 (second engaged portion), and the web 48 rotates and bends relative to the lower flange 50, with the connecting portion 52 (first engaging portion) as a fulcrum. At this time, the web 48 rotates relative to the lower flange 50 so that the included angle (interior angle) between the web 48 and the lower flange 50 becomes smaller. Meanwhile, the upper flange 49 rotates relative to the web 48 so that the included angle (interior angle) between the upper flange 49 and the web 48 becomes larger. As the included angle between the web 48 and the lower flange 50 becomes smaller in this manner, the lower flange 50 becomes increasingly difficult to remove from the opening 28. As a result, while the inner panel 32 is deforming, the bottom 34 of the inner panel 32 is always maintained in a state of being held by the side sill rain 6, preventing the front side door 5 from being turned up.

[0069] [Other embodiments] The above-described embodiment is one aspect of the present invention, and therefore the present invention is not limited to the above-described embodiment.

[0070] For example, the materials and thicknesses of the engaged member 15, the cover 30, the engaging member 31, and the support member 35 can be selected appropriately as long as they can achieve the above-mentioned functions.

[0071] In addition, in the above-described embodiment, the engaged member 15 is fixed to the side sill rein main body 9, and the upper edge 29 of the opening 28 of the engaged member 15 and the upper surface portion 12 of the side sill outer 11 are respectively defined as the first engaged portion and the second engaged portion, but a configuration corresponding to these first engaged portion and second engaged portion may also be provided on the side sill rein main body 9.

[0072] Furthermore, in the above-described embodiment, the engaging member 31 is formed in a bracket shape or a channel shape, and the connecting portion 52 between the web 48 and the lower flange 50 and the tip portion 51 of the lower flange 50 are respectively the first engaging portion and the second engaging portion, but these first engaging portion and the second engaging portion may also be formed directly on the side door by processing a portion of the side door.

[0073] In addition to the above-described vehicle body structure, the following configuration may be provided in the vehicle body structure to further prevent the front side door 5 from turning over.

[0074] For example, as shown in FIG. 9, a side door reinforcing portion 60 formed by processing a single metal plate (e.g., a 1.0 mm thick steel plate) into an approximately L-shape may be placed between the inner panel 32 and the outer panel 33 at the bottom of the front side door 5, and this side door reinforcing portion 60 may be fixed to, for example, the inner panel 32.

[0075] Furthermore, as shown in FIG. 10, an impact bar 70 made of a single metal plate (e.g., a 1.0 mm thick steel plate) may be fixed to, for example, the inner panel 32 between the inner panel 32 and outer panel 33 of the front side door 5, above the engaging member 31, so as to be inclined downward from the front side in the vehicle length direction toward the rear side in the vehicle length direction.

[0076] Furthermore, if the side body structure 2 is equipped with a B-pillar 71 provided on the rear side of the side body structure 2 in the vehicle length direction, a connecting reinforcement member 72 made of a single metal plate (for example, a 1.0 mm thick steel plate) may be fixed, for example, to the inner panel 32 between the engaging member 31 and the B-pillar 71 so as to connect the lower end of the impact bar 70 and the lower part of the front side door 5 vertically.

[0077] The engaging member 31 may be located at approximately the center in the vehicle length direction of the front side door 5. In this case, as described above, when a collision load acts on the front side door 5 from outside and the engaging member 31 attempts to move toward the passenger compartment along with the inner panel 32, the cross member 8 can resist movement of the engaging member 31 and the bottom 34 of the inner panel 32 toward the passenger compartment.

[0078] The above-described configuration makes it difficult for the front side door 5 to deform easily. Therefore, the vehicle-body side structure 2 can further prevent the front side door 5 from being turned up.

[0079] In addition, in the above-described embodiment, the engaged member 15 is formed so that the central portion 20 of the horizontal portion 16 bulges upward, but it may be formed so that it curves downward, for example. Similarly, in the above-described embodiment, the support member 35 is formed so that the central portion 42 of the horizontal portion 37 bulges upward, but it may be formed so that it curves downward, for example.

[0080] [Application of the present invention] Although the above describes an embodiment in which the present invention is applied to a door located near the driver's seat or the passenger seat, the present invention can also be applied to a door located near the rear seat. Furthermore, the present invention is not limited to doors installed in automobiles, but can be widely applied to doors of other vehicles. [Explanation of symbols]

[0081] 2 Side body structure 5 Front side door 6 Side sill rain 12 second engaged portion (upper surface portion of outer side sill) 15 Engaged member 26 Gap (space) 29 First engaged portion (upper edge) 31 Engagement member 51 Second engagement portion (tip portion) 52 First engagement portion (connection portion)

Claims

1. A side body structure of a vehicle including a side door and a side sill rain located on the inner side of the side door in the vehicle width direction and facing a lower part of the side door, The side sill rein is a first engaged portion extending in the vehicle length direction; and an engaged means having a second engaged portion disposed below the first engaged portion with a gap between the first engaged portion and the second engaged portion and located more inward in the vehicle width direction than the first engaged portion, The side door is an engaging means that extends toward the gap on the outer side of the side sill rain in the vehicle width direction when the side door is closed, and has a first engaging portion and a second engaging portion that are spaced apart from each other on the outer side and the inner side in the vehicle width direction, respectively; the engaging means is configured such that, when a force that deforms the side door toward the inside in the vehicle width direction acts on the side door, the second engaging portion enters the gap in accordance with the deformation of the side door in the vehicle width direction, and the first engaging portion and the second engaging portion engage with the first engaged portion and the second engaged portion, respectively, and bend around the first engaging portion as a fulcrum, preventing the side door from being turned up; The side sill rein has a side sill rein main body and an engaged member fixed on the side sill rein main body, the engaged member forms the first engaged portion, The upper surface of the side sill rein body forms the second engaged portion, The side door has a bottom surface facing the top surface of the side sill rein body, the engaging means is fixed to the bottom surface of the side door, the engaging means includes a second portion extending in the vehicle width direction and including the second engaging portion on the inner side in the vehicle width direction, a first portion extending upward from an outer end portion of the second portion in the vehicle width direction and forming the first engaging portion together with the second portion at a boundary with the second portion, and a third portion integrally connected to an upper end of the first portion and extending inward in the vehicle width direction from the upper end of the first portion, A curved corner portion that curves downward from the upper surface toward the outer side surface is provided at a connecting portion between the upper surface of the side sill rein body and the outer side surface of the side sill rein body, A side body structure of a vehicle, wherein the inner end portion of the second portion of the engagement means in the vehicle width direction is configured to contact the curved corner portion and be guided inward in the vehicle width direction along the upper surface of the side sill rein main body when the side door is deformed.

2. 2. The vehicle body side structure according to claim 1, wherein an outer end of the first engaged portion in the vehicle width direction is positioned more outward in the vehicle width direction than an outer end of the second engaged portion in the vehicle width direction.

3. A support member is fixed to the side door, the support member has a support member upper surface facing the bottom surface of the side door, The vehicle side body structure according to claim 1 , wherein the third portion is fixed to an upper surface of the support member.

4. The support member is formed by bending a single metal plate, 4. The vehicle body side structure according to claim 3, wherein the support member includes a support member reinforcing portion that is curved or bent upward or downward when viewed in the vehicle width direction.

5. the engaged member has a front end portion and a rear end portion in the vehicle length direction, The vehicle side body structure according to claim 1 , wherein the front end portion and the rear end portion are fixed to the upper surface or the outer side surface or both of the side sill rein body.

6. The engaged member is formed by bending a single metal plate, 6. The vehicle side body structure according to claim 5, wherein the engaged member has an engaged member reinforcing portion that is curved or bent upward or downward when viewed in the vehicle width direction.

7. 2. The vehicle side body structure according to claim 1, wherein a side door reinforcing portion is attached to a lower portion of the side door from an outer side in the vehicle width direction.

8. A B-pillar is disposed behind the side door in the vehicle length direction, an impact bar inclined downward from the front to the rear in the vehicle length direction is attached to the side door from the outer side in the vehicle width direction above the engaging means, 2. The vehicle side body structure according to claim 1, wherein a connecting reinforcement member that connects the impact bar and the lower part of the side door vertically is attached from the outside in the vehicle width direction between the engaging means and the B-pillar.

9. a cross member extending from the side sill rain toward an inner side in a vehicle width direction is attached to a lower portion of the vehicle so as to be located at a center of the side door in a vehicle length direction; 9. The vehicle body side structure according to claim 8, wherein the engaging means is disposed between the cross member and the B-pillar in the vehicle length direction.

10. The side sill rein includes a cover that covers the engaging means, 2. The vehicle side body structure according to claim 1, wherein the strength of the engaging means and the cover is determined so that the engaging means can break through the cover when the side door is deformed.

11. 11. The vehicle body side structure according to claim 10, wherein the engaging means is spaced outward in the vehicle width direction from the cover when the side door is closed and the side door is not deformed.

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