JP4702190B2 - Vehicle side structure - Google Patents

Description

  The present invention relates to a vehicle side part structure of an automobile, and more particularly to a vehicle side part structure that suppresses entry of a side door into a vehicle compartment at the time of a vehicle side collision.

2. Description of the Related Art Conventionally, a vehicle side part structure that suppresses entry of a side door into a vehicle compartment at the time of a vehicle side collision (side collision) is known (see, for example, Patent Document 1). In this technique, a bracket is constructed at the rear end portion of the impact beam of the rear side door and the step portion of the door inner panel, and the reinforcement is constructed between the bracket and the rear wall portion of the door inner panel.
Japanese Patent Application Laid-Open No. 7-96743

  However, in Patent Document 1, when the door inner panel hits the quarter panel at the time of a vehicle side collision, the deformation of the door inner panel is suppressed, and the side collision load acting on the side door is efficiently transmitted to the vehicle body side. In addition, it is necessary to increase the thickness of the added bracket to increase the strength of the bracket. This results in a significant weight increase.

  It is an object of the present invention to provide a vehicle side part structure that can suppress the deformation of the door and efficiently transmit a side impact load acting on the door to the vehicle body side without a significant increase in gravity.

According to a first aspect of the present invention, there is provided a vehicle side portion structure including a vehicle body side pillar that forms a peripheral portion of a door opening formed on a vehicle body side portion, a door for opening and closing the door opening, a door inner panel forming a vehicle interior side, the door lock and the door lock mounting portion of the reinforcing member is provided wherein the door inner panel, the vehicle back and forth in the vehicle width direction inner side wall portion of the door lock mounting portion of the door inner panel engaging the bead facing the body side pillar provided protruding inwardly in the vehicle width direction at a predetermined width direction, was closed, the wall portion is inboard forward from the outside in the vehicle width direction behind after the engagement bead It curves in the direction of an arc and is connected to the vehicle rear side wall portion of the door lock mounting portion of the door inner panel .

At the time of a vehicle side collision, the door that closes the door opening formed in the vehicle body side portion is deformed in the vehicle width inner side direction. At this time, a predetermined width is provided in the vehicle width direction inner wall portion of the door lock mounting portion of the door inner panel forming the vehicle interior side portion of the door so as to protrude inward in the vehicle width direction and face the vehicle body side pillar. The engagement bead bites into the vehicle body side pillar that forms the periphery of the door opening formed in the vehicle body side portion. In addition, the rear wall portion of the engagement bead is curved in an arc shape from the vehicle width direction inner front to the vehicle width direction rear rear, and is continuous with the vehicle rear side wall portion of the door lock mounting portion . The load acting on the rear wall portion is reliably transmitted to the vehicle rear side wall portion of the door lock mounting portion of the door inner panel and the door lock reinforcing member provided on the door lock mounting portion. As a result, the collapsing deformation of the engaging beads is suppressed, and the side impact load acting on the door is efficiently transmitted to the vehicle body side. Further, since the door inner panel is reinforced by the door lock reinforcing member, it is not necessary to provide a separate reinforcing member, and there is no significant increase in gravity.

According to a second aspect of the invention, in the vehicle side structure according to claim 1, wherein the engaging bead on the vehicle upper side and a vehicle lower side of the locking opening formed in the door inner panel, the vehicle vertical direction to the longitudinal direction It is characterized by being provided along.

Engagement beads are arranged on the vehicle upper side and the vehicle lower side of the lock opening formed in the door inner panel along the longitudinal direction of the vehicle. For this reason, at the time of a vehicle side collision, on the vehicle upper side and the vehicle lower side of the lock opening formed on the door inner panel, the engagement bead is formed on the vehicle body side pillar that forms the periphery of the door opening formed on the vehicle body side. Make sure to bite in.

  The vehicle side part structure according to the first aspect of the present invention can suppress the deformation of the door and can efficiently transmit the side impact load acting on the door to the vehicle body side without a significant increase in gravity.

  The vehicle side part structure according to the second aspect of the present invention can reliably transmit the side impact load acting on the door to the vehicle body side.

  The vehicle side part structure according to the first embodiment of the present invention will be described with reference to FIGS. In addition, arrow FR, arrow UP, and arrow IN that are appropriately described in each figure indicate a vehicle body front direction, a vehicle body upward direction, and a vehicle width inner side direction of the vehicle to which the present invention is applied, respectively.

  As shown in FIG. 4, a front door opening 12 and a rear door opening 14 are provided on the side of the vehicle body 10 of the present embodiment (in FIG. 4, the right side of the vehicle is shown from the vehicle interior side). Is formed. A front side door 16 is attached to the front door opening 12 so that the front door opening 12 can be opened and closed, and a rear side door 18 is attached to the rear door opening 14 so that the rear door opening 14 can be opened and closed.

  The front door opening 12 is surrounded by a front pillar 23 serving as a vehicle body side pillar, a roof side rail 24, a center pillar 22 serving as a vehicle body side pillar, and a rocker (side sill) 26, which constitute the peripheral portion of the front door opening 12. The rear door opening 14 is composed of a center pillar 22 as a vehicle body side pillar, a roof side rail 24, a quarter pillar 28 as a vehicle body side pillar, and a rocker (side sill). 26 is enclosed. Further, hereinafter, in the description using the front-rear direction and the vehicle width direction, the directions in the state where the rear side door 18 closes the rear door opening 14 are shown.

  FIG. 2 is an enlarged cross-sectional view taken along the line 2-2 in FIG. As shown in FIG. 2, the quarter pillar 28 includes a quarter pillar outer panel 30 that constitutes an outer portion of the quarter pillar 28 in the vehicle width direction. A front wall portion 30C is formed from the front portion 30B of the outer wall portion 30A in the vehicle width direction of the quarter pillar outer panel 30 toward the inner side in the vehicle width direction, and from the inner end 30D in the vehicle width direction of the front wall portion 30C to the front of the vehicle. An inner wall portion 30E in the vehicle width direction is formed toward the vehicle.

  The rear side door 18 is a hollow door body in which a door outer panel 38 that forms the outside of the rear side door 18 and is exposed to the outside, and a door inner panel 40 that forms the inside of the rear side door 18 are connected to each other at the periphery. It has a structure. Further, a door glass, a door glass lifting device, etc. (not shown) are arranged in the door body, and the outer peripheral edge portion 38A of the door outer panel 38 and the outer peripheral edge portion 40A of the door inner panel 40 are joined by hemming. Yes.

  A rear end portion (outer peripheral edge portion) 18A of the rear side door 18 covers the front portion of the quarter pillar 28 from the outside in the vehicle width direction. Specifically, at the rear end portion of the door inner panel 40, the rear wall portion 40B is opposed to the front wall portion 30C of the quarter pillar outer panel 30 in the vehicle front-rear direction when the rear door opening 14 is closed by the rear side door 18. Is formed. Further, the side wall 40C extends from the inner end in the vehicle width direction of the rear wall 40B toward the front of the vehicle, and the side wall 40C faces the inner side wall 30E in the vehicle width direction of the quarter pillar outer panel 30 in the vehicle width direction. is doing.

  As shown in FIG. 4, a lock reinforcement 44 as a door lock reinforcing member is provided at a rear end portion 42 </ b> A of the door belt line 42 in the rear side door 18.

  As shown in FIG. 2, the lock reinforcement 44 is made of a plate material, and is joined to the door outer panel 38 side of the door inner panel 40 by welding or the like.

  FIG. 1 is a perspective view of the door lock mounting portion of the door inner panel 40 according to the present embodiment as viewed from the obliquely rearward side of the vehicle. As shown in FIG. 1, a door lock 46 (see FIG. 2) is attached to a vehicle front side surface of a door lock attachment wall 44 </ b> A of the lock reinforcement 44 by a fastening member 47 such as three screws.

  Although not shown, the fastening member 47 is screwed into the door lock 46 through the mounting hole formed in the door inner panel 40 and the mounting hole formed in the lock reinforcement 44. The door lock 46 has a known structure having a latch.

  As shown in FIG. 2, the door lock mounting wall portion 44 </ b> A of the lock reinforcement 44 is coupled to the vehicle front side surface of the rear wall portion 40 </ b> B of the door inner panel 40. Further, from the vehicle width direction inner side end of the door lock mounting wall portion 44A of the lock reinforcement 44, a vehicle width direction inner side wall portion 44B is formed as an inner wall portion toward the front of the vehicle. The part 44B is coupled to the outer side surface in the vehicle width direction of the side wall part 40C.

  Accordingly, the rear wall portion 40B of the door inner panel 40 serves as a vehicle rear side wall portion of the door lock mounting portion, and the side wall portion 40C of the door inner panel 40 serves as an inner side wall portion of the door lock mounting portion. .

  On the other hand, from the vehicle width direction outer end of the door lock mounting wall portion 44A of the lock reinforcement 44, a vehicle width direction outer wall portion 44C is formed as an outer wall portion toward the rear of the vehicle. A flange 44D is formed from the rear end of the portion 44C toward the rear in the vehicle width direction.

  As shown in FIG. 1, a rectangular door lock opening 48 is formed at the upper rear end of the door inner panel 40 across the rear wall 40B and the side wall 40C. In addition, a rectangular door lock opening 49 is formed at the intermediate portion in the vertical direction of the lock reinforcement 44 so as to straddle the door lock mounting wall portion 44A and the vehicle width direction inner side wall portion 44B.

  The door lock opening 48 of the door inner panel 40 and the door lock opening 49 of the lock reinforcement 44 overlap each other, and these openings 48 and 49 are provided on the front wall 30C of the quarter pillar outer panel 30. A door lock striker (not shown) is inserted from the vehicle rear side toward the vehicle front side. Further, the door lock striker meshes with a latch built in the door lock 46 to hold the rear side door 18 in a closed state.

As shown in FIG. 2, an engagement bead 60 is provided on the rear end of the side wall 40C of the door inner panel 40 so as to protrude inward in the vehicle width direction by press molding. A predetermined width W1 is set in the direction. Further, the rear wall portion 60A of the engagement bead 60 is curved in an arc shape from the front in the vehicle width direction to the rear rear in the vehicle width direction, and the inner end in the vehicle width direction of the rear wall portion 40B of the door inner panel 40 It is connected to the portion 40D. The arc shape may be a non-uniform R shape.

  That is, the engagement bead 60 faces the inner wall portion 30E in the vehicle width direction of the quarter pillar outer panel 30 in the vehicle width direction, and the rear wall portion 60A of the engagement bead 60 is the inner wall portion in the vehicle width direction of the engagement bead 60. 60C and the inner end portion 40D in the vehicle width direction of the rear wall portion 40B of the door inner panel 40 are smoothly continuous in the tangential direction of the arc.

  Further, the rear wall portion 40B of the door inner panel 40 is fixed to the door lock mounting wall portion 44A of the lock reinforcement 44 by spot welding or the like in the vicinity of the inner end portion 40D in the vehicle width direction (coupling P1).

  On the other hand, the front wall portion 60B of the engagement bead 60 is an inclined portion that is inclined from the rear in the vehicle width direction toward the front in the vehicle width direction. Further, the side wall portion 40C of the door inner panel 40 is fixed to the inner side wall portion 44B of the lock reinforcement 44 in the vehicle width direction by spot welding or the like in the vicinity of the front wall portion 60B of the engagement bead 60 (connection). Point P2).

  As shown in FIG. 1, the engagement beads 60 are arranged along the vehicle vertical direction in the longitudinal direction, and are formed on the vehicle upper side and the vehicle lower side of the door lock opening 48 formed in the door inner panel 40. . Further, a stopper rubber mounting hole 62 is formed in the upper end portion 60D of the vehicle width direction inner side wall portion 60C which is the top portion of the engagement bead 60, and a stopper rubber 64 is mounted in the stopper rubber mounting hole 62. Yes.

  The stopper rubber 64 is a part that determines the closing position of the rear side door 18, and therefore there is almost no overstroke when the door is closed in the vicinity thereof. As a result, the gap between the engagement bead 60 and the inner side wall portion 30E in the vehicle width direction of the quarter pillar outer panel 30 can be reduced. For this reason, the engagement bead 60 and the inner side wall portion 30E in the vehicle width direction of the quarter pillar outer panel 30 come into contact with each other at the initial stage of the vehicle side collision, so that the initial load can be quickly raised.

  FIG. 3 is an enlarged cross-sectional view taken along the line 3-3 in FIG. As shown in FIG. 3, the stopper rubber mounting hole 62 of the bead 60 is formed in a portion 60 </ b> F that is recessed outward in the vehicle width direction with respect to the vehicle width direction inner side wall portion 60 </ b> C of the bead 60. Further, the stopper rubber 64 is fixed to the upper end 60D of the engagement bead 60 in the vehicle vertical direction with the groove 66 formed on the outer peripheral portion engaged with the peripheral edge of the stopper rubber mounting hole 62.

  Accordingly, another vehicle or the like collides with the rear side door 18 from the outer side in the vehicle width direction toward the inner side in the vehicle width direction, and the engagement bead 60 moves in the vehicle width inner direction (in FIG. 2) due to the side impact load (arrow F1 in FIG. 2). When moving in the direction of arrow A), as shown by a two-dot chain line in FIG. 2, it bites into the inner side wall portion 30 </ b> E in the vehicle width direction of the quarter pillar outer panel 30.

In this case, the wall portion 60A after the engagement bead 60 is continuous with the wall portion 40B in the vehicle width direction inside end portion 40D and the arcuate after the door inner panel 40. For this reason, the load (reaction force) acting on the rear wall portion 60A of the engagement bead 60 is applied to the rear wall portion 40B of the door inner panel 40 and the lock reinforcement 44 coupled to the rear wall portion 40B of the door inner panel 40. The door lock mounting wall portion 44A can be reliably transmitted. As a result, the rear wall portion 60 </ b> A of the engagement bead 60 or the rear wall portion 40 </ b> B of the door inner panel 40 is less likely to buckle, so that the collapse of the engagement bead 60 can be suppressed.

  Further, since the engagement bead 60 is formed on the vehicle upper side and the vehicle lower side of the door lock opening 48 formed in the door inner panel 40, the collision load F <b> 1 is applied to the vehicle width of the quarter pillar outer panel 30 by the engagement bead 60. It can transmit efficiently over the wide range of the vehicle up-down direction in the direction inner side wall part 30E.

  Further, the rear wall portion 40B of the door inner panel 40 is fixed to the door lock mounting wall portion 44A of the lock reinforcement 44 by spot welding or the like in the vicinity of the vehicle width direction inner side end portion 40D (coupling point P1). The side wall portion 40C of the door inner panel 40 is fixed to the inner side wall portion 44B of the lock reinforcement 44 in the vehicle width direction by spot welding or the like in the vicinity of the front wall portion 60B of the engagement bead 60 (joint point P2). ). Therefore, when the vehicle width direction inner side wall portion 60C of the engagement bead 60 hits the vehicle width direction inner side wall portion 30E of the quarter pillar outer panel 30, the engagement bead 60 is in the vehicle front-rear direction (the direction of arrow B in FIG. 2). It is possible to suppress the spread (collapse) to the connection points P1 and P2.

  As a result, the deformation (collapse) of the engagement bead 60 is suppressed, the side collision load F1 acting on the rear side door 18 is efficiently transmitted to the vehicle body side, and the deformation of the rear side door 18 is suppressed.

  That is, the inner side wall portion 30E in the vehicle width direction of the quarter pillar outer panel 30 is recessed toward the inner side in the vehicle width direction, and the engagement bead 60 is engaged with the inner side wall portion 30E in the vehicle width direction of the quarter pillar outer panel 30. For this reason, the center portion of the rear side door 18 is deformed inward in the vehicle width direction, and the rear end portion 18A of the rear side door 18 is prevented from moving in the door center direction and in the vehicle width inward direction (arrow F2 direction in FIG. 2). It can be done.

  As shown in FIG. 1, the vehicle front-rear direction width W1 of the lower portion 60E of the engagement bead 60 is gradually narrowed. A courtesy switch contact surface 67 is formed on the vehicle front side of the lower portion 60E of the engagement bead 60, and the courtesy switch contact surface 67 is contacted with a courtesy switch (not shown) provided on the vehicle body side. The courtesy switch contact surface 67 may be formed on the lower portion 60E of the engagement bead 60.

  Next, the operation of this embodiment will be described.

  In the present embodiment configured as described above, another vehicle or the like collides with the rear side door 18 from the outer side in the vehicle width direction toward the inner side in the vehicle width direction, and toward the inner side in the vehicle width formed on the side wall portion 40C of the door inner panel 40. When the convex engagement bead 60 moves in the vehicle width inner direction (the direction of arrow A in FIG. 2), the engagement bead 60 is in the vehicle width direction inner side wall portion of the quarter pillar outer panel 30 as shown by a two-dot chain line in FIG. Cut into 30E.

In this case, the wall portion 60A after the engagement bead 60, because it is continuous in the vehicle width direction inside end portion 40D and the arcuate wall portion 40B after the door inner panel 40, the wall portion 60A after the engagement bead 60 The load acting on the door inner panel 40 can be reliably transmitted to the rear wall portion 40B of the door inner panel 40 and the door lock mounting wall portion 44A of the lock reinforcement 44 coupled to the rear wall portion 40B of the door inner panel 40. As a result, the rear wall portion 60 </ b> A of the engagement bead 60 or the rear wall portion 40 </ b> B of the door inner panel 40 is less likely to buckle, so that the engagement bead 60 can be prevented from being crushed.

  Further, since the engagement bead 60 is formed on the vehicle upper side and the vehicle lower side of the door lock opening 48 formed in the door inner panel 40, the collision load F <b> 1 is applied to the vehicle width of the quarter pillar outer panel 30 by the engagement bead 60. Transmission can be efficiently performed over a wide range in the vehicle vertical direction in the direction inner wall portion 30E.

  Further, the rear wall portion 40B of the door inner panel 40 is fixed to the door lock mounting wall portion 44A of the lock reinforcement 44 by spot welding or the like in the vicinity of the vehicle width direction inner side end portion 40D (coupling point P1). The side wall portion 40C of the door inner panel 40 is fixed to the inner side wall portion 44B of the lock reinforcement 44 in the vehicle width direction by spot welding or the like in the vicinity of the front wall portion 60B of the engagement bead 60 (joint point P2). ). Therefore, when the vehicle width direction inner side wall portion 60C of the engagement bead 60 hits the vehicle width direction inner side wall portion 30E of the quarter pillar outer panel 30, the engagement bead 60 is in the vehicle front-rear direction (the direction of arrow B in FIG. 2). It is possible to suppress the spread (collapse) to the connection points P1 and P2.

  As a result, deformation (collapse) of the engagement bead 60 is suppressed, the side collision load F1 acting on the rear side door 18 is efficiently transmitted to the vehicle body side, and deformation of the rear side door 18 is suppressed.

  That is, the inner side wall portion 30E in the vehicle width direction of the quarter pillar outer panel 30 is recessed toward the inner side in the vehicle width direction, and the engagement bead 60 is engaged with the inner side wall portion 30E in the vehicle width direction of the quarter pillar outer panel 30. For this reason, the center portion of the rear side door 18 is deformed inward in the vehicle width direction, and the rear end portion 18A of the rear side door 18 is prevented from moving in the door center direction and in the vehicle width inward direction (arrow F2 direction in FIG. 2). it can.

  In this embodiment, since the door lock mounting wall 44A of the lock reinforcement 44 is coupled to the rear wall 40B of the door inner panel 40, the rigidity of the rear wall 40B of the door inner panel 40 is improved. As a result, when the door is normally closed, the bending of the door inner panel 40 can be suppressed, and the door closing is improved.

  In the present embodiment, the rear wall portion 60A of the engagement bead 60 is curved in an arc shape from the front in the vehicle width direction to the rear in the vehicle width direction. Also in the door inner panel 40 made of an alloy, the formability of the rear wall portion 60A of the engagement bead 60 is improved.

  Further, in the present embodiment, the engagement bead 60 improves the rigidity of the peripheral edge portion of the door lock opening 48 in the door inner panel 40 as compared with a configuration in which the engagement bead 60 is not provided.

  In the present embodiment, a stopper rubber 64 for determining the closing position of the rear side door 18 is attached to the stopper rubber mounting hole 62 formed in the upper end portion 60D of the vehicle width direction inner side wall portion 60C that is the top portion of the engagement bead 60. In the vicinity of the stopper rubber 64, there is almost no overstroke when the door is closed. As a result, the gap between the engagement bead 60 and the inner side wall portion 30E in the vehicle width direction of the quarter pillar outer panel 30 can be reduced. For this reason, the engagement bead 60 and the inner side wall portion 30E in the vehicle width direction of the quarter pillar outer panel 30 come into contact with each other at the initial stage of the vehicle side collision, so that the initial load can be quickly raised. That is, by making the initial load rise earlier in the event of a vehicle-side collision, the rear side door 18 can be quickly prevented from moving inward in the vehicle width direction.

  Further, since the rigidity of the attachment portion of the stopper rubber 64 is higher than that of the configuration in which the engagement bead 60 is not provided, the installation accuracy (closing position accuracy) of the rear side door 18 is also improved.

  Next, the vehicle side part structure according to the second embodiment of the present invention will be described with reference to FIGS.

  In addition, about the same member as 1st Embodiment, the same code | symbol is attached | subjected and the description is abbreviate | omitted.

  FIG. 5 shows a perspective view of the door lock mounting portion of the door inner panel 40 according to the present embodiment as viewed obliquely from the rear side inside the vehicle. FIG. 6 is a cross-sectional view corresponding to FIG. 2 in the present embodiment.

  As shown in FIGS. 5 and 6, in the present embodiment, a bead 70 is formed at a portion of the inner wall portion 44 </ b> B in the vehicle width direction of the lock reinforcement 44 that is the outer side of the engagement bead 60 in the vehicle width direction.

  The bead 70 is provided so as to protrude inward in the vehicle width direction, and the bead 70 extends along the inner peripheral surface of the engagement bead 60. The rear wall portion 70 </ b> A of the bead 70 is curved in an arc shape from the front in the vehicle width direction to the rear in the vehicle width direction, and is continuous with the door lock mounting wall portion 44 </ b> A of the lock reinforcement 44.

  The front wall portion 70B of the bead 70 is an inclined portion that is inclined from the inner rear in the vehicle width direction toward the outer front in the vehicle width direction. Further, the front-rear direction intermediate portion of the vehicle width direction inner side wall portion 70C, which is the top portion of the bead 70, is fixed to the front-rear direction intermediate portion of the engagement bead 60 in the vehicle width direction inner wall portion 70C by spot welding or the like (connection). Point P3).

  Therefore, in this embodiment, in addition to the same effects as those of the first embodiment, the bead 70 formed at the portion of the inner wall portion 44B in the vehicle width direction of the lock reinforcement 44 on the outer side of the engagement bead 60 in the vehicle width direction. Thus, deformation (collapse) of the engagement bead 60 at the time of a vehicle-side collision can be further suppressed. For this reason, the side impact load acting on the rear side door 18 can be transmitted more efficiently to the vehicle body side.

  Next, the vehicle side part structure concerning 3rd Embodiment of this invention is demonstrated based on FIG.

  In addition, about the same member as 1st Embodiment, the same code | symbol is attached | subjected and the description is abbreviate | omitted.

  FIG. 7 shows a cross-sectional view corresponding to FIG. 2 in the present embodiment.

  As shown in FIG. 7, in the present embodiment, a filler 76 such as an adhesive or a hard foaming agent is formed inside the cross section formed by the engagement bead 60 and the inner wall portion 44 </ b> B of the lock reinforcement 44 in the vehicle width direction. Is filled.

  Therefore, in this embodiment, in addition to the same effect as the first embodiment, the adhesive filled in the cross section formed by the engagement bead 60 and the inner wall portion 44B in the vehicle width direction of the lock reinforcement 44. Further, the filler 76 such as a hard foaming agent can further suppress deformation (collapse) of the engagement bead 60 at the time of a vehicle side collision. For this reason, the side impact load acting on the rear side door 18 can be transmitted more efficiently to the vehicle body side.

  Next, the vehicle side part structure concerning 4th Embodiment of this invention is demonstrated based on FIG.

  In addition, about the same member as 1st Embodiment, the same code | symbol is attached | subjected and the description is abbreviate | omitted.

  FIG. 8 is a cross-sectional view corresponding to FIG. 2 in the present embodiment.

  As shown in FIG. 8, in this embodiment, a fastening member 78 such as a bolt moves the axis of the lock reinforcement 44 on the outer side in the vehicle width direction of the engagement bead 60 on the vehicle width direction inner side wall portion 44B. It is fixed toward the width direction. Therefore, at the time of a vehicle-side collision, the inner end 78A in the vehicle width direction of the fastening member 78 hits the outer surface in the vehicle width direction of the inner wall 60C in the vehicle width direction of the engagement bead 60 and the engagement bead 60 is deformed (collapsed). It comes to prevent.

  Therefore, in this embodiment, in addition to the same effects as those of the first embodiment, bolts fixed to the portion of the inner wall portion 44B in the vehicle width direction of the lock reinforcement 44 that is the outer side of the engagement bead 60 in the vehicle width direction, etc. The fastening member 78 can further suppress the deformation (collapse) of the engagement bead 60 at the time of a vehicle-side collision. For this reason, the side impact load acting on the rear side door 18 can be transmitted more efficiently to the vehicle body side.

  Next, the vehicle side part structure concerning 5th Embodiment of this invention is demonstrated based on FIG.9 and FIG.10.

  In addition, about the same member as 1st Embodiment, the same code | symbol is attached | subjected and the description is abbreviate | omitted.

  FIG. 9 is a perspective view of the door lock mounting portion of the door inner panel 40 according to the present embodiment as viewed from the obliquely rearward side of the vehicle. FIG. 10 is an enlarged cross-sectional perspective view taken along the line 10-10 in FIG.

  As shown in FIG. 9, in the present embodiment, a plurality of beads 80 as reinforcing means are provided on the rear wall portion 40B of the door inner panel 40 so as to protrude rearward at a predetermined interval in the vehicle vertical direction. The beads 80 are arranged in the longitudinal direction along the vehicle width direction.

  As shown in FIG. 10, the vehicle width direction outer side end portion 80 </ b> A of the bead 80 reaches the outer peripheral edge portion 40 </ b> A of the door inner panel 40, and the vehicle width direction inner end portion 80 </ b> B of the bead 80 is positioned behind the engagement bead 60. It reaches the wall 60A. Further, the shape of the bead 80 viewed from the vehicle width direction is an arc shape, and is convex by press molding.

  On the other hand, a plurality of beads 84 as reinforcing means are provided on the inner side wall 60C in the vehicle width direction of the engagement bead 60 so as to protrude inward in the vehicle width direction at predetermined intervals in the vehicle vertical direction. Are arranged along the vehicle vertical direction in the longitudinal direction. Further, the beads 84 are formed in both the vehicle upper side portion and the vehicle lower side portion of the door lock opening 48. The shape of the bead 84 viewed from the vehicle vertical direction is an arc shape, and is convex by press molding.

  Therefore, in the present embodiment, in addition to the same effects as the first embodiment, the bead 80 is formed on the rear wall portion 40B of the door inner panel 40, so that the rear wall portion of the door inner panel 40 at the time of a vehicle side collision. 40B becomes more difficult to buckle and deform. As a result, the engagement bead 60 is further easily engaged with the inner side wall portion 30 </ b> E in the vehicle width direction of the quarter pillar outer panel 30 at the time of a vehicle side collision.

  Further, since the bead 84 is formed on the inner side wall portion 60C in the vehicle width direction of the engagement bead 60, the engagement bead 60 is further hardly deformed at the time of a vehicle side collision. As a result, the engagement bead 60 is further easily engaged with the inner side wall portion 30 </ b> E in the vehicle width direction of the quarter pillar outer panel 30 at the time of a vehicle side collision.

  Further, in the present embodiment, since the bead 84 is convex toward the vehicle width inner side, it is possible to shorten the time until the bead 84 hits the vehicle width direction inner side wall portion 30E of the quarter pillar outer panel 30 at the time of a vehicle side collision. As a result, the rise of the initial load at the time of a vehicle-side collision can be accelerated, and the rear side door 18 can be quickly prevented from moving inward in the vehicle width direction.

  In this embodiment, the bead 84 is convex toward the inner side of the vehicle width, but instead, the bead 84 may be convex toward the outer side of the vehicle width.

  Further, as indicated by broken lines in FIG. 10, a plurality of beads 88 as reinforcing means are provided along the beads 80 on the vehicle front side of the beads 80 in the door lock mounting wall 44 </ b> A of the lock reinforcement 44. It is good also as the provided structure. In this case, as shown in FIG. 11, the bead 80 and the bead 88 form a closed section 90 along the vehicle width direction. Can be difficult to deform.

  In the above, the present invention has been described in detail for specific embodiments. However, the present invention is not limited to the above-described embodiments, and various other embodiments are possible within the scope of the present invention. It will be apparent to those skilled in the art. For example, in each of the above-described embodiments, as shown in FIG. 3, the stopper rubber mounting hole 62 of the bead 60 is formed in a portion 60 </ b> F that is recessed outward in the vehicle width direction with respect to the inner wall portion 60 </ b> C in the vehicle width direction of the bead 60. However, instead of this, as shown in FIG. 12, the stopper rubber mounting hole 62 of the bead 60 is formed in a portion 60 </ b> G that protrudes inward in the vehicle width direction with respect to the inner side wall portion 60 </ b> C of the bead 60 in the vehicle width direction. It is also good.

  Further, in each of the above embodiments, the example in which the present invention is applied to the rear side door 18 for opening and closing the rear door opening 14 for the rear seat occupant has been shown, but the present invention is not limited thereto, You may apply to the side door 16 grade | etc.,.

It is the perspective view seen from the vehicle inner side diagonal back which shows the rear part of the rear side door of the vehicle side part structure which concerns on 1st Embodiment of this invention. It is an expanded sectional view along the 2-2 line section of Drawing 4. FIG. 3 is an enlarged sectional view taken along a section 3-3 in FIG. 1. It is the side view seen from the vehicle interior side which shows the vehicle body right side part of the vehicle of the vehicle side part structure according to the first embodiment of the present invention. It is the perspective view seen from the vehicle inner side diagonal back which shows the rear part of the rear side door of the vehicle side part structure which concerns on 2nd Embodiment of this invention. It is sectional drawing corresponding to FIG. 2 of the vehicle side part structure which concerns on 2nd Embodiment of this invention. It is a perspective view corresponding to FIG. 2 of the vehicle side part structure which concerns on 3rd Embodiment of this invention. It is a perspective view corresponding to FIG. 2 of the vehicle side part structure which concerns on 4th Embodiment of this invention. It is the perspective view seen from the vehicle inner side diagonal back which shows the rear part of the rear side door of the vehicle side part structure which concerns on 5th Embodiment of this invention. FIG. 10 is an enlarged cross-sectional perspective view taken along the line 10-10 in FIG. 9; It is an expanded sectional perspective view along the 11-11 line cross section of FIG. It is sectional drawing corresponding to FIG. 3 of the vehicle side part structure which concerns on other embodiment of this invention.

Explanation of symbols

14 Rear door opening 18 Rear side door 28 Quarter pillar (vehicle body side pillar)
30 Quarter pillar outer panel 38 Door outer panel 40 Door inner panel 40B Rear wall portion of door inner panel (vehicle rear side wall portion of door lock mounting portion)
40C Side wall part of door inner panel (inner side wall part of door lock mounting part in vehicle width direction)
44 Lock reinforcement (Door lock reinforcement member)
44A Door Lock Mounting Wall of Lock Reinforcement 44B Inner Wall Side Wall of Lock Reinforcement 46 Door Lock 48 Door Lock Opening of Door Inner Panel 49 Door Lock Opening of Lock Reinforcement 60 Engaging Bead 60A Engaging Bead Rear wall 62 Stopper rubber mounting hole 70 Bead 76 Filler 78 Fastening member 80 Bead 84 Bead 88 Bead

Claims (2)

A vehicle body side pillar that forms a peripheral portion of a door opening formed in the vehicle body side portion;
A door for opening and closing the door opening;
A door inner panel forming a vehicle interior side portion of the door;
A door lock mounting portion of the door inner panel provided with a door lock reinforcing member;
Have a an engagement bead which faces the vehicle body pillar provided protruding in the vehicle width direction inner side in the vehicle longitudinal direction at a predetermined width in the vehicle width direction inner side wall portion of the door lock mounting portion of the door inner panel, wherein The rear wall portion of the engagement bead is curved in an arc shape from the front in the vehicle width direction to the rear in the vehicle width direction, and is connected to the vehicle rear side wall portion of the door lock mounting portion of the door inner panel. Vehicle side part structure. A vehicle upper side and a vehicle lower side of the engaging bead locking opening formed in the door inner panel, vehicle according to claim 1, characterized in that provided along the longitudinal direction in the vertical direction of the vehicle Part structure.