JP2007030555A - Side door structure - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To obtain a side door structure capable of effectively transmitting a side collision load to a vehicle body frame. <P>SOLUTION: The side door structure 10 is equipped with a side door 12 for opening/closing an opening portion for getting on/off of an occupant on a vehicle body. A door reinforcement 32 transmitting a load inward in a vehicular width direction from a vehicle body outside to the vehicle body frame 40 is arranged at a lower part of the side door 12. The door reinforcement 32 comprises an inside wall 44B positioned inside in the vehicular width direction and structuring an end portion on a vehicle body frame side, an inner wall 44I opposite in the vehicular width direction to the inside wall 44B, and a lateral rib A wall coupling the inside wall 44B and the inner wall 44I. The door reinforcement 32 is formed so as to make the vehicular width direction outside higher than the inside and intersect the lateral rib 46A at a center portion in a vehicular width direction, and further equipped with a tilting rib 46F coupling the inside wall 44B and the inner wall 44I. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a side door structure applied to a side door provided in a vehicle such as an automobile.

In order to protect the occupant at the time of a side collision, an elastic pad is arranged between the door outer panel and the door inner panel, and the elastic pad pushed by the outer panel at the side collision is projected into the vehicle interior. A technique for preventing a secondary collision of an occupant is known (see, for example, Patent Document 1).
Japanese Utility Model Publication No. 4-76558

  However, the conventional technology as described above cannot transmit the side impact load to the vehicle body skeleton.

  In view of the above facts, an object of the present invention is to obtain a side door structure that can effectively transmit a side impact load to a vehicle body skeleton.

  In order to achieve the above object, the side door structure according to the first aspect of the present invention is configured such that a load inward in the vehicle width direction from the outside of the vehicle body is applied to a lower portion of the side door for opening and closing an opening for passenger entry / exit of the vehicle body. A side door structure in which a reinforcing member for transmitting to a vehicle body skeleton is disposed, wherein the reinforcing member is located on an inner side in the vehicle width direction and forms an end portion on the vehicle body skeleton side, and the inner vertical wall An outer vertical wall positioned in the vehicle width direction of the wall, a horizontal wall connecting the inner vertical wall and the outer vertical wall, and the outer side in the vehicle width direction is higher than the inner side, and the horizontal wall and the center in the vehicle width direction And an inclined wall connecting the inner vertical wall and the outer vertical wall or a horizontal wall different from the horizontal wall intersected by itself.

  In the side door structure according to claim 1, for example, when a load of a predetermined value or more is input from the outside of the vehicle body to the lower portion of the door due to a side collision, the door is pressed and moved by the load to the inside of the vehicle, and the reinforcing member Transmits a side impact load to the vehicle body skeleton located on the inner side in the vehicle width direction. Here, the reinforcing member is configured such that the inner and outer vertical walls are connected by the horizontal wall, and the horizontal wall is effectively reinforced against buckling by the inclined wall. It can be transmitted to the vehicle body skeleton as a compressive load (axial force). In the case of a collision mode in which the inclined wall linearly connects the input portion of the side impact load and the vehicle body skeleton, the inclined wall is reinforced with the lateral wall to suppress deformation (buckling), and its axis It can be expected to transmit a load equivalent to force to the body frame.

  Thus, in the side door structure according to the first aspect, the side impact load can be effectively transmitted to the vehicle body skeleton. The lateral wall is not limited to the horizontal plane, and may be inclined so that the inner side in the vehicle width direction becomes higher, for example, opposite to the inclined wall, and the vehicle has a smaller inclination angle with respect to the horizontal plane than the inclined wall. It may be inclined so that the outer side in the direction becomes higher. Further, for example, it goes without saying that it may be inclined in the front-rear direction.

  A side door structure according to a second aspect of the present invention is the side door structure according to the first aspect, wherein at least one of the outer vertical walls forms a concave portion that opens upward at an intermediate portion in the vehicle width direction of the reinforcing member. A concave wall on the inner side in the vehicle width direction, and connected to the inner vertical wall by the inclined wall.

  In the side door structure according to claim 2, the reinforcing member is deformed so that the concave portion is crushed at the time of a side collision, and the concave wall on the outer side in the vehicle width direction contacts the inner concave wall, that is, the outer vertical wall (at least one of them). . Since this outer vertical wall is connected to the inner vertical wall via the horizontal wall and the inclined wall, in other words, since different vertical portions of the outer vertical wall are supported by the horizontal wall and the inclined wall, the outer vertical wall Bending deformation of the wall is suppressed. Thereby, in the reinforcing member having the recess, the side collision load can be effectively transmitted to the vehicle body skeleton mainly as the compression load (axial force) of the lateral wall.

  A side door structure according to a third aspect of the invention is the side door structure according to the second aspect, wherein the outer vertical wall and the inner vertical wall, which are concave walls on the inner side in the vehicle width direction constituting the concave portion, are connected. A plurality of the inclined walls are provided.

  In the side door structure according to claim 3, the outer vertical wall (inner concave wall) supported by the plurality of inclined walls further improves the bending rigidity, and the side impact load is mainly a compressive load (axial force) of the lateral wall. Can be transmitted to the body frame more effectively.

  A side door structure according to a fourth aspect of the present invention is the side door structure according to the second or third aspect, wherein the upper end portion of the outer vertical wall, which is a concave wall on the inner side in the vehicle width direction that forms the concave portion, It joined to the door inner member which comprises the vehicle width direction inner side part of the said side door.

  In the side door structure according to claim 4, since the upper end of the outer vertical wall which is the inner concave wall in the concave portion of the reinforcing member is joined to the door inner member, the bending deformation of the outer vertical wall is suppressed by the bending strength of the door inner member. Is done. For this reason, the bending rigidity of the outer vertical wall is further improved, and the side impact load can be transmitted to the vehicle body skeleton more effectively as a compression load (axial force) mainly on the horizontal wall.

  In order to achieve the above object, the side door structure according to the invention described in claim 5 is configured such that a load inward in the vehicle width direction from the outside of the vehicle body is applied to a lower portion of the side door for opening and closing an opening for passenger entry / exit of the vehicle body. A side door structure in which a reinforcing member for transmitting to a vehicle body skeleton is disposed, the reinforcing member having a concave portion that opens upward at an intermediate portion in the vehicle width direction, and a concave wall on the inner side in the vehicle width direction in the concave portion. The upper end part was joined to the door inner member that constitutes the vehicle width direction inner side part of the side door.

  In the side door structure according to claim 5, for example, when a load of a predetermined value or more is input from the outside of the vehicle body to the lower portion of the door due to a side collision, the door is pressed and moved by the load to the inside of the vehicle, and the reinforcing member Transmits a side impact load to the vehicle body skeleton located on the inner side in the vehicle width direction. Here, since the upper end of the concave wall on the inner side in the vehicle width direction in the concave portion is joined to the door inner member, the bending deformation of the concave wall is suppressed by the bending strength of the door inner member. Thereby, in the reinforcing member having a concave portion in the vehicle width direction intermediate portion, the side impact load can be effectively transmitted to the vehicle body skeleton via the inner portion in the vehicle width direction than the concave portion.

  Thus, in the side door structure according to the fifth aspect, the side impact load can be effectively transmitted to the vehicle body skeleton.

  As described above, the side door structure according to the present invention has an excellent effect that the side impact load can be effectively transmitted to the vehicle body skeleton.

A side door structure 10 as a side door structure according to an embodiment of the present invention will be described with reference to FIGS. 1 to 4. First, the schematic overall configuration of the side door structure 10 will be described, and then the door reinforcement 32 which is the main part of the present invention will be described in detail.
In addition, arrow FR, arrow UP, and arrow IN that are appropriately described in each figure respectively indicate the front direction (traveling direction), the upward direction, and the inner side in the vehicle width direction of the vehicle to which the side door structure 10 is applied.

(overall structure)
FIG. 5 is a perspective view in which a side door 12 as a door in the present invention is partially cut away. As shown in this figure, the side door 12 is for opening and closing a door opening 14 provided in a side portion of the vehicle body 11. In this embodiment, the side door 12 is rotatably supported by a center pillar 16 serving as a pillar via a door hinge 30 at a front portion 12A, and the center pillar 16 constitutes a front edge. The rear door opens and closes the opening 14. The door opening 14 is surrounded by a center pillar 16, a roof side rail 18, a rear pillar 20, and a rocker (side sill) 22. Hereinafter, when the description is made using the front-rear direction and the vehicle width direction, the directions in the state where the side door 12 closes the door opening 14 are shown.

  As shown in FIGS. 1 and 3, the side door 12 includes a door inner panel 24 and a door outer panel 26 that covers the door inner panel 24 from the outside in the vehicle width direction and is exposed to the outside of the vehicle. The outer peripheral edge 26A of the door outer panel 26 is coupled to the outer peripheral edge 24A of the door inner panel 24 by hemming. As shown in FIG. 5, the side door 12 includes a side glass 25 that can open and close the side window 12 </ b> B formed on the upper side. FIG. 1 shows a state in which the side glass 25 is located at a position where the side window 12B is opened.

  An impact beam 28 that is elongated in the front-rear direction is disposed at the lower portion between the door inner panel 24 and the door outer panel 26. As shown in FIGS. 2 and 3, the impact beam 28 has a length that extends over substantially the entire length in the front-rear direction at the lower portion of the side door 12, and the front and rear ends 28A, 28B are fixed to the support portions 29A, 29B, respectively. It is supported. As shown in FIG. 1, in this embodiment, the impact beam 28 is formed in a substantially cylindrical shape.

  As shown in FIG. 3, the side door 12 is supported by the center pillar 16 via the door hinge 30 so as to be rotatable about the hinge shaft 30A. By rotating about the hinge shaft 30A, the door opening 14 is provided. It is set as the structure which can take the closing position which closes, and the open position which opens the door opening part 14. As shown in FIG. A hinge shaft 30 </ b> A of the door hinge 30 passes through the front end of the impact beam 28.

  As shown in FIGS. 1 to 3, the side door 12 includes a door reinforcement 32 as a reinforcing member disposed at a lower portion of the center portion in the front-rear direction. The door reinforcement 32 is formed in a substantially rectangular parallelepiped hollow block shape as a whole (details will be described later), and the outer end in the vehicle width direction is fixed to the inner surface of the door outer panel 26. The door reinforcement 32 protrudes inward in the vehicle width direction from the door inner panel 24 through a window portion 24 </ b> B formed in the door inner panel 24.

  As shown in FIGS. 1 and 3, the door reinforcement 32 is covered from the vehicle interior side by a door trim 34, and an upper portion 32 </ b> B of the protruding portion 32 </ b> A protruding inward in the vehicle width direction from the door inner panel 24 is provided. Together with the upper part 34A of the door trim 34 projecting upward from the upper part 32B and the upper part of the window part 24B of the door inner panel 24, a door pocket 36 is formed for storing on-vehicle accessories. The bottom portion of the door pocket 36, the upper portion 32B of the door reinforcement 32 constituting the side wall, and the upper portion of the door inner panel 24 above the window portion 24B are covered with an interior covering material 35. Further, the protruding portion 32 </ b> A of the door reinforcement 32 is disposed on the door reinforcement 32 side of the door trim 34 and the interior covering material 35 and is covered with a waterproof sheet 37 bonded to the door inner panel 24.

  Further, as shown in FIG. 1, a vehicle body skeleton that is elongated in the vehicle width direction inside the door reinforcement 32 of the side door 12 that closes the door opening 14 and reinforces the floor panel 38. The outer end 40A in the vehicle width direction of the floor cross member 40 as a member is located. Therefore, when the collision body C collides with the side door 12 from the outside and a load inward in the vehicle width direction greater than a predetermined value acts, the load is transmitted from the collision body C to the floor cross member 40 via the door reinforcement 32. It is like that. A rear seat 42 (support portion thereof) is fixed to the floor cross member 40.

(Composition of door reinforcement)
As shown in FIG. 1, the door reinforcement 32 is formed in a frame shape in a cross-sectional view orthogonal to the front-rear direction and has a closed section, and is provided inside the outer section 44 so as to form the outer section 44. And an inner reinforcing portion 46 for reinforcement.

  The outer portion 44 has an outer wall 44A that is erected along the vertical direction at the outer end in the vehicle width direction, an inner wall 44B that is erected along the vertical direction at the inner end in the vehicle width direction and is lower than the outer wall 44A, A bottom wall 44C that connects the lower ends of the outer wall 44A and the inner wall 44B along a substantially horizontal plane, a ceiling wall 44D that continues from the upper end of the outer wall 44A along the substantially horizontal plane in the vehicle width direction, and a ceiling wall 44D. An inclined ceiling wall 44E connected to the inner end in the vehicle width direction and the upper end of the inner wall 44B is included.

  Further, the outer portion 44 of the door reinforcement 32 has a U wall 44F formed in the vicinity of the upper end of the outer wall 44A. The U wall 44F is formed in a substantially U shape that opens outward in the vehicle width direction in a cross-sectional view, and both opening edges are connected to the outer wall 44A, so that the center of the impact beam 28 in the front-rear direction is inserted. A housing portion 48 is formed. Further, the outer portion 44 has a U wall 44G formed in the vicinity of the rear portion of the top wall 44D.

  The U wall 44G is formed in a substantially U shape that opens upward in a cross-sectional view, has both opening edges continuous with the top wall 44D, and accommodates the lower end of the side glass 25 that opens the side window 12B. Part 50 is formed. The glass container 50 has a depth that is at least half the height of the door reinforcement 32. The U wall 44G constituting the glass housing part 50 connects the outer wall 44H forming the outer edge in the vehicle width direction of the glass housing part 50, the inner wall 44I facing the outer wall 44H, and the lower ends of the outer wall 44H and the inner wall 44I. It can be grasped separately from the U-shaped bottom wall 44J.

  On the other hand, the inner reinforcing portion 46 is formed along the substantially horizontal plane, with the first horizontal rib 46A connecting the vertical middle portion of the inner wall 44I and the upper end of the inner wall 44B (the inner lower end of the inclined ceiling wall 44E) along the substantially horizontal plane. The second horizontal rib 46B connecting the lower end portion of the U-shaped bottom wall 44J and the inner side wall 44B, and the third horizontal rib 46C connecting the outer wall 44A and the lower end portion of the U-shaped bottom wall 44J along a substantially horizontal plane. A fourth lateral rib 46D that connects the lower edge of the U wall 44F and the vertical middle portion of the outer wall 44H along a substantially horizontal plane, and an inner end (top) in the vehicle width direction of the U wall 44F along a substantially horizontal plane. 5th horizontal rib 46E which connects the up-down direction intermediate part of outer wall 44H. The second lateral rib 46B and the third lateral rib 46C are formed along substantially the same plane (horizontal plane), and the first lateral rib 46A and the fourth lateral rib 46D are formed along substantially the same plane. . Further, the U-shaped bottom wall 44J and the third lateral rib 46C are joined (reinforced) by welding, and the U-shaped bottom wall 44J and the second lateral rib 46B are joined by welding.

  Further, the inner reinforcing portion 46 includes inclined ribs as inclined walls inclined with respect to the horizontal plane so that the outer side in the vehicle width direction is higher than the inner side, and in this embodiment, a plurality of inclined ribs 46F, 46G, 46H is provided. The first inclined rib 46F intersects the intermediate portion in the vehicle width direction of the first horizontal rib 46A, and is continuous with the first horizontal rib 46A on the inner wall 44I and above the continuous point with the first horizontal rib 46A on the inner wall 44I. The lower side of the point is connected.

  Similarly, the second inclined rib 46G intersects the intermediate portion in the vehicle width direction of the second lateral rib 46B, and is above the continuous point of the inner wall 44I with the second lateral rib 46B and the second lateral rib 46B on the inner wall 44B. And the lower side (in this embodiment, the lower end continuous to the bottom wall 44C). Further, the third inclined rib 46H intersects the middle portion in the vehicle width direction of the third horizontal rib 46C, and is located above the continuation point of the outer wall 44A with the third horizontal rib 46C and the bottom wall 44C (the center in the vehicle width direction). Part).

  The door reinforcement 32 further includes a flange 52 that extends downward from the center in the vehicle width direction of the bottom wall 44 </ b> C in the outer portion 44. In this embodiment, the flange 52 is suspended from the vicinity of the continuous point of the third inclined rib 46H on the bottom wall 44C. Further, as shown in FIG. 3, the door reinforcement 32 is formed such that its front edge 32C is inclined with respect to the vehicle width direction so that the outer side in the vehicle width direction is located forward of the inner side in the vehicle width direction. As a substantially trapezoidal shape in plan view.

  The door reinforcement 32 described above is integrally formed by extrusion molding of aluminum or aluminum alloy. In addition, the door reinforcement 32 may be comprised with alloys other than aluminum type, and may be formed by the other processing method (for example, pultrusion molding).

  As shown in FIG. 1, the door reinforcement 32 has an outer wall 44A fixed to the inner surface of the door outer panel 26 with an adhesive, and a flange 52 which is a lower edge portion of the window portion 24B of the door inner panel 24. It is fixed by bonding or welding. An adhesion portion between the outer side wall 44A and the door outer panel 26 is an adhesion portion S that substantially coincides with a continuous point of the third inclined rib 46H on the outer wall 44A. Further, the door reinforcement 32 is fixed to the impact beam 28 that has entered the beam housing portion 48 by bonding, welding, or the like at the bottom of the U wall 44F. Thereby, the support span of the impact beam 28 is shortened.

  In the door reinforcement 32 described above, with respect to the first inclined rib 46F as the inclined wall, the inner wall 44B is an “inner vertical wall”, the inner wall 44I is an “outer vertical wall”, and the first horizontal rib 46A is Corresponds to the “horizontal wall”. For the second inclined rib 46G, the inner wall 44B corresponds to an “inner vertical wall”, the inner wall 44I corresponds to an “outer vertical wall”, and the second horizontal rib 46A corresponds to a “lateral wall”. Further, for the third inclined rib 46H, the U wall 44G or the inner wall 44B is an “inner vertical wall”, the outer wall 44A is an “outer vertical wall”, and the third horizontal rib 46C or the third horizontal rib 46C The second horizontal rib 46B and an object captured as one horizontal rib correspond to the “lateral wall”, and the bottom wall 44C corresponds to “another horizontal wall”.

  Next, the operation of this embodiment will be described.

  In the side door structure 10 configured as described above, the door opening 14 of the vehicle body 11 is opened and closed by rotating the side door 12 around the hinge shaft 30 </ b> A of the door hinge 30. When the collision body C collides with the lower part of the side door 12 that closes the door opening 14 from the outside in the vehicle width direction, the door reinforcement 32 pressed against the collision body C via the door outer panel 26 is moved to the floor cross member 40. The side impact load is transmitted by contacting the outer end 40A in the vehicle width direction.

  Here, in the side door structure 10, the first inclined rib 46F reinforces the first horizontal rib 46A, the second inclined rib 46G reinforces the second horizontal rib 46B, and the third inclined rib 46H reinforces the third horizontal rib 46C. The buckling of the lateral ribs 46A, 46B, 46C due to the side impact load inward in the vehicle width direction is prevented, and a load corresponding to the axial force of the lateral ribs 46A, 46B, 46C can be transmitted to the floor cross member 40. it can.

  Further, in the side door structure 10, each of the inclined ribs 46F, 46G, and 46H is inclined so that the outer end in the vehicle width direction is higher than the inner end. In the case of a bumper collision of a vehicle), the inclined ribs 46F, 46G, and 46H are linearly connected to the load input portion (collision body C) and the load transmission portion (floor cross member 40) of the door reinforcement 32 in a substantially straight line. Link. For this reason, the side impact load is transmitted to the floor cross member 40 by the inclined ribs 46F, 46G, and 46H. In this case, each of the lateral ribs 46A, 46B, 46C functions as a reinforcing member that prevents buckling of the corresponding inclined ribs 46F, 46G, 46H. The load is transmitted to the floor cross member 40.

  Further, the first inclined rib 46F that connects the upper part of the inner wall 44I and the inner wall 44B (first lateral rib 46A) suppresses bending deformation of the upper part of the inner wall 44I (the upper part of the first lateral rib 46A). The second inclined rib 46G that connects the lower portion of the inner wall 44I and the inner wall 44B (bottom wall 44C) suppresses bending deformation of the inner wall 44I (and the vicinity of the boundary between the U-shaped bottom wall 44J). For this reason, even when the vehicle width direction outer side portion of the glass accommodating portion 50 in the door reinforcement 32 falls down and comes into contact with the inner wall 44I, the deformation of the inner wall 44I can be suppressed, and the inclined ceiling wall 44E, the first and second lateral walls The side impact load can be transmitted to the floor cross member 40 early (in a short time) via the ribs 46A and 46B and the first and second inclined ribs 46F and 46G.

  Thus, in the side door structure 10 which concerns on 1st Embodiment, a side collision load can be effectively transmitted to the floor cross member 40 which is a vehicle body frame | skeleton. Hereinafter, this will be further described by comparison with a comparative example. Note that parts and portions corresponding to the present embodiment in the comparative example are denoted by the same reference numerals as those of the present embodiment, and description thereof is omitted. FIG. 10 shows a side door structure according to a comparative example in a cross-sectional view corresponding to FIG.

  The door reinforcement 100 constituting the side door structure according to the comparative example crosses the first and second lateral ribs 46A, 46B in place of the first to third inclined ribs 46F, 46G, 46H, and the inclined ceiling wall 44E. The first vertical rib 102A connecting the bottom wall 44C to the bottom wall 44C, the second vertical rib 102B connecting the second horizontal rib 46B and the bottom wall 44C below the inner wall 44I, and the third horizontal rib 46C below the outer wall 44H. And a third vertical rib 102C that connects the bottom wall 44C. In the following description, the outer portion in the vehicle width direction of the glass accommodating portion 50 in the door reinforcement 100 is A portion, the connection portion between the U-shaped bottom wall 44J and the third lateral rib 46C is B point, the top wall 44D and the outer wall 44H. Is the corner C between the top wall 44D and the inner wall 44I, the point D is the connecting part of the outer wall 44H with the fourth lateral rib 46D, and the part of the inner wall 44I is connected to the first lateral rib 46A. Let it be F point.

  In FIG. 11, the deformation state of the door reinforcement 100 after the side collision is indicated by a solid line, and the shape before the deformation is indicated by an imaginary line. From FIG. 11, it can be seen that side impact causes the A portion of the door reinforcement 100 to bend (rotate and fall) with the B point as a fulcrum, and the C point contacts a portion lower than the D point on the inner wall 44I. . For this reason, the upper part of the inner wall 44I above the point F is bent and deformed, and the axial force of the inclined ceiling wall 44E cannot be transmitted to the floor cross member 40. In other words, only the load corresponding to the bending strength can be transmitted to the floor cross member 40 at the portion above the point F on the inner wall 44I. Similarly, it can be seen that due to a side collision, the point E contacts a part lower than the point F on the inner wall 44I. For this reason, the lower portion of the inner wall 44I below the point F is bent and deformed, and the axial force of the first lateral rib 46A cannot be transmitted to the floor cross member 40. On the other hand, since the first vertical rib 102A along the vertical direction of the vehicle body is set substantially perpendicular to the side collision direction (load input direction), the bending force is mainly transmitted and the axial force is transmitted to the floor cross member 40. Can not. Further, the load is not efficiently transmitted to the second lateral rib 46B and the bottom wall 44C positioned below the lower end of the collision body C, and hardly contributes to the load transmission to the floor cross member 40. As described above, in the configuration including the door reinforcement 100 according to the comparative example, the side impact load cannot be effectively (effectively) transmitted to the floor cross member 40.

  On the other hand, in the side door structure 10 according to the present embodiment, the first inclined rib 46F of the door reinforcement 32 supports the contact portion of the inner wall 44I at the point C and bends above the point F of the inner wall 44I. While suppressing, buckling of the 1st horizontal rib 46A is prevented, and the axial equivalent load of the inclination top wall 44E and the 1st horizontal rib 46A is transmitted to the floor cross member 40. The first inclined rib 46F transmits its own axial force equivalent load to the floor cross member 40 while buckling is suppressed by the first lateral rib 46A. Similarly, the second inclined rib 46G supports the contact portion of the inner wall 44I at the point F, suppresses bending below the point F of the inner wall 44I, and prevents the second lateral rib 46B from buckling. The load equivalent to the axial force of the second lateral rib 46B is transmitted to the floor cross member 40. Further, the second inclined rib 46G transmits its own axial force equivalent load to the floor cross member 40 while buckling is suppressed by the second lateral rib 46B. Further, even if the lower end of the collision body C is above the second horizontal wall 46B, the second inclined rib 46G is on the lower side (bottom wall 44C) of the second horizontal wall 46B and the inner side wall 44B than the second horizontal rib 46B. Since the load is transmitted, the side impact load can be transmitted to the floor cross member 40 while being distributed in the vertical direction of the vehicle body. Furthermore, the 3rd inclination rib 46H transmits the load input into the A part in the door reinforcement 32 to the floor cross member 40 through the bottom wall 44C without passing through the U wall 44G. Further, the side impact load is transmitted to the floor cross member 40 also on the route passing through the third lateral rib 46C and the second lateral rib 46B.

  As described above, in the side door structure 10 according to the present embodiment, a large load can be transmitted to the floor cross member 40 remarkably efficiently during a side collision as compared with the configuration according to the comparative example. For this reason, a deformation | transformation of the side door 12 is suppressed and a passenger | crew space can be ensured after a side collision. Further, since the inclined ribs 46F, 46G, and 46H are inclined in one direction with respect to the side collision direction, a stable deformation mode of the door reinforcement 32 can be obtained. Moreover, in the side door structure 10, since the 3rd inclination rib 46H has passed under the U-shaped bottom wall 44J which comprises the lower part of the glass accommodating part 50 which accommodates the lower end part of the side glass 25, it flows down from the side glass 25 or Dropped water such as rainwater is guided to the outside in the vehicle width direction of the door inner panel 24 by the third inclined rib 46H and the flange 52. Thereby, infiltration of the dwelling water into the vehicle interior is prevented, and waterproofness is improved.

  Further, in the side door structure 10, the third inclined rib 46 </ b> H is continuous with the bonding portion S with the door outer panel 26 in the outer wall 44 </ b> A of the door reinforcement 32, so that the surface rigidity of the door outer panel 26 is improved.

  Next, another embodiment of the present invention will be described. Note that parts and portions that are basically the same as those in the first embodiment or the previous configuration are denoted by the same reference numerals as those in the first embodiment or the previous configuration, and description thereof is omitted.

(Second Embodiment)
FIG. 5 shows a side door structure 60 according to a second embodiment of the present invention in a cross-sectional view corresponding to FIG. As shown in this figure, the side door structure 60 includes a door reinforcement 62 instead of the door reinforcement 32. The door reinforcement 62 is different from the door reinforcement 32 in that the outer portion 44 does not have an inner portion in the vehicle width direction from the inner wall 44I of the inclined ceiling wall 44E and the ceiling wall 44D, and other portions are the door reinforcement 32 and the other portions. It is constituted similarly.

  Therefore, in the door reinforcement 62, the portion above the first lateral rib 46A of the first inclined rib 46F (inward in the vehicle width direction from the intersecting portion), the portion above the first inclined rib 46F of the first lateral rib 46A (from the intersecting portion). The vehicle width direction outer side portion can be grasped as a constituent portion of the outer shape portion 44.

  And the door reinforcement 62 is joined to the upper edge part of the window part 24B in the door inner panel 24 by adhesion | attachment or welding from the connection point with the 1st inclination rib 46F in the inner wall 44I.

  The side door structure 60 having the above configuration also includes the first to third inclined ribs 46F, 46G, and 46H, so that basically the same effects as those of the first embodiment can be obtained. In the side door structure 60, since the upper end of the inner wall 44I is joined to the door inner panel 24, the bending strength of the door inner panel 24 can be used for suppressing deformation of the inner wall 44I. Thereby, a side collision load can be efficiently transmitted to the floor cross member 40.

  In this embodiment, the upper end 32B of the inclined ceiling wall 44E, that is, the door reinforcement 32 is eliminated to increase the capacity of the door pocket 36, and the upper end of the inner wall 44I is joined to the door inner panel 24 and transmitted to the floor cross member 40. The load could be secured. Further, by joining the upper end of the inner wall 44I to the door inner panel 24, rainwater can be prevented from entering the vehicle interior along the side glass 25.

(Third embodiment)
FIG. 6 is a sectional view showing a door reinforcement 72 constituting the side door structure 70 according to the third embodiment. As shown in this figure, the door reinforcement 72 has a vehicle width that is lower than the connecting portion with the third lateral rib 46C on the outer wall 44A and the connecting portion with the third inclined rib 46H on the bottom wall 44C. It differs from the door reinforcement 32 in that there is no outer portion in the direction.

  The side door structure 70 having the above configuration also includes the first to third inclined ribs 46F, 46G, and 46H, so that basically the same effects as those of the first embodiment can be obtained. Moreover, in the side door structure 70, since the cross-sectional area (size of a closed cross section) of the part which deform | transforms when the A part of the door reinforcement 72 deform | transforms into B as a fulcrum is small compared with the door reinforcement 32, By collision of the collision body C (collision above the third lateral rib 46C), the portion A can be reliably bent and deformed with the point B as a fulcrum, and the U wall 44G can be crushed to form a side collision load transmission path. it can. That is, the deformation mode of the door reinforcement 72 can be controlled. In the door reinforcement 72, the joining workability between the U-shaped bottom wall 44J and the third lateral rib 46C is improved.

(Fourth embodiment)
FIG. 7 is a sectional view showing a door reinforcement 82 constituting the side door structure 80 according to the fourth embodiment. As shown in this figure, the door reinforcement 82 is provided with a first reinforcement rib 84A and a second transverse rib 84B as lateral walls in place of the first to third lateral walls 46A, 46B, 46C. Is different.

  The first horizontal rib 84A is inclined so that the outer end is lower than the inner end in the vehicle width direction, and connects the point F and the upper end of the inner wall 44B or the inner lower end of the inclined ceiling wall 44E. Therefore, the first lateral rib 84A has an inner end in the vehicle width direction that coincides with a connecting portion of the second inclined rib 46G on the inner wall 44I. The second horizontal rib 84B is inclined so that the outer end is lower than the inner end in the vehicle width direction, and connects the lower portion of the outer wall 44A and the connection portion between the first inclined rib 46F on the inner wall 44B. ing. Further, the intermediate portion in the vehicle width direction of the second lateral rib 84B is joined to the U-shaped bottom wall 44J.

  The side door structure 80 configured as described above also includes the first to third inclined ribs 46F, 46G, and 46H, so that basically the same effects as those of the first embodiment can be obtained. Moreover, in the side door structure 80, since each horizontal rib 84A, 84B inclines in the said direction, when the collision body C collides and the door reinforcement 82 rotates in the arrow R direction, each horizontal rib 84A, 84B will be Become horizontal. In this state, each lateral rib 84A, 84B transmits a load corresponding to the axial force to the floor cross member 40. Even when the collision body C collides with a relatively low portion of the side door 12, the lateral rib 84B efficiently transmits the load to the floor cross member 40.

(Fifth embodiment)
FIG. 8 is a sectional view showing a door reinforcement 92 constituting the side door structure 90 according to the fifth embodiment. As shown in this figure, the door reinforcement 82 is different from the door reinforcement 32 in that a flange 94 is erected upward from the upper end of the inner wall 44I. The door reinforcement 92 is configured such that its flange 94 is joined to the upper edge of the window portion 24B in the door inner panel 24 (not shown).

  The side door structure 90 having the above configuration also includes the first to third inclined ribs 46F, 46G, and 46H, so that basically the same effects as those of the first embodiment can be obtained. Further, in the side door structure 90, since the flange 94 of the door reinforcement 92 is joined to the door inner panel 24, the inner wall 44I is deformed using the bending strength of the door inner panel 24 as in the second embodiment. Can be suppressed. Moreover, since the inclined ceiling wall 44E exists, the side impact load can be transmitted to the floor cross member 40 more efficiently than in the first or second embodiment.

(Sixth embodiment)
9 shows a side door structure 95 according to the sixth embodiment in a cross-sectional view corresponding to FIG. As shown in this figure, the side door structure 95 includes a door reinforcement 96 in place of the door reinforcement 62. The door reinforcement 96 is different from the door reinforcement 62 in that it includes a flange 98 that is fixed to the outside of the door inner panel 24 in the vehicle width direction instead of the flange 52 that is fixed to the inside of the door inner panel 24 in the vehicle width direction. Differently, other parts are configured in the same manner as the door reinforcement 62.

  Therefore, the same effect as that of the second embodiment can be obtained by the side door structure 95 having the above-described configuration. Moreover, in the side door structure 95, since the door reinforcement 96 is a structure which fixes the flange 98 to the outer side surface of the door inner panel 24 in the vehicle width direction, the load from the door reinforcement 96 is received by the door inner panel at the time of a side collision. The door reinforcement 96 can be easily held on the side door 12 in a stable posture and position. This makes it possible to reliably achieve the above-described effect of transmitting a side impact load from the door reinforcement 96 to the floor cross member 40 at the time of a side impact.

  In each of the above embodiments, an example in which three inclined ribs 46F, 46G, and 46H are provided has been described. However, the present invention is not limited to this, and for example, one, two, or four or more inclined ribs are provided. It can be set as the structure provided with. Further, in the configuration in which the inner wall 44I (flange 94) is joined to the door inner panel 24, a configuration without the inclined ribs may be provided. It is good as an offense without

  In each of the above embodiments, the side door 12 is an example of a rear door having a front hinge structure. However, the present invention is not limited to this example. For example, the present invention may be applied to a front door. Alternatively, the present invention may be applied to a side door having a rear hinge structure. Further, it goes without saying that the vehicle body skeleton in the present invention is not limited to the floor cross member 40.

It is sectional drawing seen from the vehicle body rear side which shows the side door structure which concerns on the 1st Embodiment of this invention. It is a perspective view showing the side door structure concerning a 1st embodiment of the present invention. It is a plane sectional view showing the side door structure concerning a 1st embodiment of the present invention. It is a perspective view of the side door to which the side door structure concerning a 1st embodiment of the present invention was applied. It is sectional drawing seen from the vehicle body rear side which shows the side door structure which concerns on the 2nd Embodiment of this invention. It is sectional drawing of the door reinforcement which comprises the side door structure which concerns on the 3rd Embodiment of this invention. It is sectional drawing of the door reinforcement which comprises the side door structure which concerns on the 4th Embodiment of this invention. It is sectional drawing of the door reinforcement which comprises the side door structure which concerns on the 5th Embodiment of this invention. It is sectional drawing seen from the vehicle body rear side which shows the side door structure which concerns on the 6th Embodiment of this invention. It is sectional drawing corresponding to FIG. 1 which comprises the side door structure which concerns on the comparative example with embodiment of this invention. It is sectional drawing which shows the deformation | transformation state of the door reinforcement which comprises the said comparative example.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Side door structure 11 Car body 12 Side door 14 Door opening part 24 Door inner panel (door inner member)
32 Door reinforcement (reinforcing member)
40 Floor cross member (body frame)
44A outer wall (outer vertical wall)
44B inner wall (inner vertical wall)
44I inner wall (outer vertical wall, inner vertical wall)
44C Bottom wall (other side walls)
46A ・ 46B ・ 46C Horizontal rib (horizontal wall)
46F ・ 46G ・ 46H Inclined rib (Inclined wall)
50 Glass container (recess)
60/70/80/90/95 Side door structure 62/72/82/92/96 Door reinforcement (reinforcement member)

Claims (5)

A side door structure in which a reinforcing member that transmits a load inward in the vehicle width direction from the outside of the vehicle body to the vehicle body skeleton is disposed at a lower portion of the side door for opening and closing an opening for passenger entry / exit of the vehicle body,
The reinforcing member is
An inner vertical wall located on the inner side in the vehicle width direction and constituting an end of the vehicle body skeleton side;
An outer vertical wall located in the vehicle width direction of the inner vertical wall;
A lateral wall connecting the inner vertical wall and the outer vertical wall;
An outer side in the vehicle width direction is higher than the inner side and is formed so as to intersect with the lateral wall at the center in the vehicle width direction; and a lateral wall different from the inner vertical wall and the outer vertical wall or the lateral wall intersected by itself An inclined wall connecting the
Including side door structure.   At least one of the outer vertical walls is a concave wall on the inner side in the vehicle width direction that constitutes a concave portion that opens upward at an intermediate portion in the vehicle width direction of the reinforcing member, and is connected to the inner vertical wall by the inclined wall. The side door structure according to claim 1.   The side door structure according to claim 2, comprising a plurality of the inclined walls that connect the outer vertical wall and the inner vertical wall, which are concave walls on the inner side in the vehicle width direction constituting the concave portion.   The side according to claim 2 or 3, wherein an upper end portion of the outer vertical wall, which is a concave wall on the inner side in the vehicle width direction constituting the concave portion, is joined to a door inner member constituting an inner portion in the vehicle width direction of the side door. Door structure A side door structure in which a reinforcing member that transmits a load inward in the vehicle width direction from the outside of the vehicle body to the vehicle body skeleton is disposed at a lower portion of the side door for opening and closing an opening for passenger entry / exit of the vehicle body,
The reinforcing member has a concave portion that opens upward at an intermediate portion in the vehicle width direction, and the upper end portion of the concave wall on the inner side in the vehicle width direction in the concave portion serves as a door inner member that constitutes an inner portion in the vehicle width direction of the side door. Bonded side door structure.

Images