JP6313808B2 - Door structure - Google Patents

Description

  The present invention relates to a door structure.

  Various reinforcement measures have been taken for doors of vehicles such as automobiles. For example, Patent Document 1 describes a technique of joining a bulkhead extending in the vertical direction to a door inner panel, with respect to a tailgate that covers an opening at the rear of a vehicle body so as to be opened and closed. The door inner panel of Patent Document 1 is integrally provided with a lateral beam extending in the vehicle width direction near the center in the vertical direction, and the bulkhead connects the lateral beam and the lower end of the door inner panel.

Japanese Patent No. 5380519

  In Patent Document 1, the lateral beam and the lower end of the door inner panel are connected by a bulkhead, but the effect of increasing the rigidity of the lateral beam cannot be expected. Therefore, the lateral beam is deformed when a load is applied, so that the door outer panel is also deformed along with the deformation of the lateral beam, and there is a possibility that the design of the vehicle is lost.

  This invention is made | formed in view of the said point, and makes it a subject to provide the door structure which can improve the rigidity of a transverse beam.

  In order to solve the above problems, a door structure according to the present invention is a door structure that covers an opening of a vehicle body so as to be openable and closable, and is connected to a frame portion having a shape along an outer shape of the door, and the frame portion, A lateral beam extending in the lateral width direction of the door, a lock member disposed below the lateral beam, for locking the door to the vehicle body, connected to the lock member, and extending toward the lateral beam A bulkhead. The transverse beam has an upper joint provided on the upper end side and a lower joint provided on the lower end side. The bulkhead is joined to both the upper joint and the lower joint.

  According to the present invention, the bulkhead connected to the lock member and extending toward the transverse beam is joined to both the upper and lower joints of the transverse beam, so that the rigidity of the transverse beam with respect to the load is increased. Can be increased sufficiently. Thereby, since it becomes difficult to deform | transform a horizontal beam when a load is added, the loss of the design property by deformation | transformation of a door outer panel is suppressed.

  Moreover, it is preferable that the said bulkhead is joined with respect to the said transverse beam from the vehicle outer side.

  In this way, when a load is applied from the outside of the vehicle, the connection between the bulkhead and the transverse beam is difficult to disengage and it is also difficult to be affected by the height position of the load action. And the horizontal beam can be received in cooperation, so that the amount of displacement in the in-vehicle direction can be minimized. Even if the bulkhead is joined to the design surface of the door, the structure of the bulkhead can be simplified by reducing the distance between the bulkhead and the design surface.

  In addition, it is preferable that an outer panel disposed outside the lateral beam and the bulkhead is provided, and the bulkhead, the lateral beam, and the outer panel are integrally joined at the same location.

  In this way, the bulkhead, the transverse beam, and the outer panel are integrally joined at the same location, so that it is possible to receive the load applied to any of the three members in a cooperative manner, greatly increasing the rigidity of the entire door. Can be improved. Moreover, when glass is arrange | positioned above the joining location of 3 members, glass can be hold | maintained stably.

  The outer panel includes an upper panel disposed above, and a lower panel disposed below the upper panel and separate from the upper panel, and the bulkhead is disposed on both the upper panel and the lower panel. It is preferable that it is joined.

  In this case, since the upper panel and the lower panel are separate bodies, a door having excellent appearance that is not limited by moldability can be manufactured. Since the bulkhead is joined to both the upper panel and the lower panel to reinforce the bulkhead, the rigidity of the outer panel as a whole can be suppressed even if the outer panel is divided into two.

  The upper panel and the lower panel each have a connecting surface for connecting to each other, and the connecting surface is positioned between the upper joint and the lower joint in the vertical direction. It is preferable.

  By doing so, the transverse beam indirectly reinforces the connecting surface between the upper panel and the lower panel via the bulkhead, so that even if the outer panel is divided into two, it is possible to suppress a decrease in rigidity of the outer panel as a whole.

  Further, it is preferable that a vibration damping member for suppressing vibration of the door is attached to the bulkhead.

  In this case, since the vibration damping member is attached to the bulkhead located closer to the lock member than the lateral beam, it is possible to increase the vibration absorption efficiency with respect to the vibration input from the lock member.

  According to the door structure according to the present invention, the rigidity of the transverse beam can be increased.

1 is a perspective view of an automobile having a door structure according to an embodiment of the present invention. It is a perspective view which shows the state which removed the outer panel from the door structure of embodiment. It is the rear view which looked at the door structure of the embodiment from the vehicle back. It is the front view which looked at the door structure of the embodiment from the vehicle front. It is a perspective view which shows a horizontal beam. It is a perspective view which shows a bulkhead. It is the VII-VII sectional view taken on the line of FIG.

  Embodiments of the present invention will be described in detail with reference to the drawings as appropriate. The same components are denoted by the same reference numerals, and redundant description is omitted. In addition, when explaining a direction, it demonstrates based on the front-back, left-right, up-down, seeing from the driver. Further, “vehicle width direction” is synonymous with “left-right direction”.

  As shown in FIG. 1, a door structure 1 according to an embodiment of the present invention is applied to a rear door 2 of an automobile V. The rear door 2 covers the tailgate opening 4 formed at the rear of the vehicle body 3 so as to be openable and closable. The rear door 2 is configured to be rotatable about the upper end with respect to the vehicle body 3. The rear door 2 is inclined so as to be positioned forward as the upper end side is directed upward, and has a generally letter-like shape as viewed from the side.

  As shown in FIGS. 1 and 2, the rear door 2 includes an inner panel 10 disposed on the inner side of the vehicle, an outer panel 20 disposed on the outer side of the inner panel 10, and the inner panel 10 and the outer panel 20. A transverse beam 30, a lock member 40, and a bulkhead 50 are provided. Each member is made of a metal material.

  As shown in FIG. 2, the inner panel 10 includes a frame portion 11, a lock member attaching portion 12, and a pair of left and right reinforcing portions 13 and 13. The frame portion 11 has a shape along the outer shape of the rear door 2 (the shape of the tailgate opening 4). The frame portion 11 includes an inner upper frame portion 11a, an inner lower frame portion 11b, and a pair of left and right inner side frame portions 11c and 11c, and has a rectangular frame shape when viewed from the rear of the vehicle. The inner side frame portions 11c, 11c are bent so as to extend upward from the left and right end portions of the inner lower frame portion 11b and to extend obliquely upward to the front from the middle in the vertical direction. The inner upper frame portion 11a is located above and in front of the inner lower frame portion 11b.

  The lock member attachment portion 12 is a part for attaching the lock member 40. The lock member attachment portion 12 is provided at the center in the vehicle width direction of the inner lower frame portion 11b. The lock member attaching portion 12 is formed with a rectangular inner latch opening 12a therethrough.

  As illustrated in FIG. 4, the reinforcing portion 13 connects the center of the inner lower frame portion 11 b in the vehicle width direction and the inner side frame portion 11 c and is a portion that reinforces the frame portion 11. The reinforcing portion 13 is inclined so as to be positioned upward as it goes from the inner lower frame portion 11b to the inner side frame portion 11c. In other words, the pair of reinforcing portions 13 and 13 are arranged in a substantially V shape (reverse C shape). The upper end of the reinforcing part 13 is connected to the vicinity of the bent part 11d of the inner side frame part 11c. The lower ends of the pair of reinforcing portions 13 and 13 are connected to the inner lower frame portion 11b with the lock member attaching portion 12 interposed therebetween.

  As shown in FIG. 2, the lateral beam 30 is a member that extends in the lateral width direction (vehicle width direction in the embodiment) of the rear door 2 so as to straddle the left and right inner side frame portions 11c and 11c. The left and right end portions of the lateral beam 30 are joined to the inner side frame portions 11c and 11c by welding, and the position where the reinforcing portion 13 and the inner side frame portion 11c intersect with each other and the position overlapping the bent portion 11d in the front-rear direction. Is arranged. The horizontal beam 30 partitions the inside of the frame part 11 up and down. As a result, a rectangular frame-shaped inner window frame portion 14 surrounded by the inner upper frame portion 11 a, the left and right inner side frame portions 11 c and 11 c, and the horizontal beam 30 is formed in the upper portion inside the frame portion 11. Yes. The transverse beam 30 constitutes the lower frame of the inner window frame portion 14. The transverse beam 30 will be described in detail later.

  The lock member 40 is a member that is disposed below the lateral beam 30 and that locks the rear door 2 to the vehicle body 3. The lock member 40 includes a latch mechanism 41 that engages with an engagement portion (not shown) provided in the vehicle body 3, and a latch reinforcement member 42 that is interposed between the lock member mounting portion 12 and the latch mechanism 41. Yes. In each figure, the latch mechanism 41 is schematically drawn by a two-dot chain line. The latch reinforcing member 42 is joined to the lock member attaching portion 12 by welding. The latch mechanism 41 and the latch reinforcing member 42 are joined to each other by a fastener such as a screw. The latch reinforcing member 42 has a rectangular reinforcing side latch opening 42a communicating with the inner side latch opening 12a. The inner side latch opening 12 a and the reinforcement side latch opening 42 a are through holes for allowing the latch mechanism 41 to face the engaging portion of the vehicle body 3.

  The bulkhead 50 is a member that is connected to the latch reinforcing member 42 of the lock member 40 and extends toward the transverse beam 30. That is, the bulkhead 50 extends in the vertical direction so as to connect the lock member 40 and the lateral beam 30. The bulkhead 50 is provided at the center of the rear door 2 in the vehicle width direction, and is located closer to the lock member 40 than the lateral beam 30. The bulkhead 50 will be described in detail later.

  As shown in FIG. 3, the outer panel 20 is a member that is disposed outside the lateral beam 30 and the bulkhead 50 and forms the outer design surface of the rear door 2. The outer panel 20 includes an upper panel 21 disposed above, and a lower panel 22 disposed below the upper panel 21 and separate from the upper panel 21.

  The upper panel 21 mainly covers the inner window frame portion 14 of the inner panel 10 from the rear. The upper panel 21 includes an outer upper frame portion 21a, an outer lower frame portion 21b, and a pair of left and right outer side frame portions 21c and 21c, and is formed in a square frame shape that matches the shape of the inner window frame portion 14. Yes. That is, the outer upper frame portion 21a, the outer lower frame portion 21b, and the pair of left and right outer side frame portions 21c and 21c form a square frame-shaped outer window frame portion. A rear window glass 60 is installed on the inner window frame portion 14 and the upper panel 21.

  The outer side frame portions 21c and 21c are bent so as to extend obliquely upward and forward from the left and right ends of the outer lower frame portion 21b. The outer upper frame portion 21a is located above and forward of the outer lower frame portion 21b. At the upper edge of the outer lower frame portion 21b (lower opening edge of the upper panel 21), an upper side bonding portion 21d bonded to the lateral beam 30 and the bulkhead 50 extends forward and upward.

  The lower panel 22 mainly covers parts other than the inner window frame part 14 and the bulkhead 50 in the frame part 11 from the rear. The lower panel 22 extends in the up-down direction and the left-right direction. The lower panel 22 has a substantially horizontally long rectangular shape.

Next, the transverse beam 30 and the bulkhead 50 will be described in detail with reference to FIGS.
As shown in FIG. 5, the horizontal beam 30 is inclined so as to be positioned rearward as it goes upward, and is positioned rearward as it goes downward and continues to the lower end of the first inclined surface 31. And a second inclined surface 32 which is inclined in the direction. The lateral beam 30 has a plurality of through holes for reducing the weight, and the through holes are formed in the first inclined surface 31 and the second inclined surface 32, respectively.

  The 1st inclined surface 31 is formed so that a height dimension may become large, so that it goes to the vehicle width direction center. The 2nd inclined surface 32 is formed so that a height dimension may become large, so that it goes to the vehicle width direction outer side. The first inclined surface 31 and the second inclined surface 32 are respectively provided with a beam upper bonding portion 33 and a beam lower bonding portion 34 that are bonded to the bulkhead 50. The beam upper joint portion 33 extends in the front-rear direction and the left-right direction along the upper end of the first inclined surface 31. The beam lower joint portion 34 is formed by bulging the center side in the vehicle width direction at the lower end of the second inclined surface 32 backward in a rectangular shape, and is provided in a pair of left and right. The beam upper joint portion 33 and the beam lower joint portion 34 are spaced apart from each other in the vertical direction.

  As shown in FIG. 6, the bulkhead 50 has a pair of left and right reinforcing walls 51, 51 and a connecting wall 52 that connects the left and right reinforcing walls 51, 51 together.

  The reinforcing wall 51 extends in the vertical direction and in the front-rear direction, and is a wall-like portion that is long in the vertical direction. The lower end of the reinforcing wall 51 is joined to the upper surface of the latch reinforcing member 42 of the lock member 40 by welding (see FIG. 2). At the rear end of the reinforcing wall 51, a flange portion 51d extending outward is formed over the entire length.

  The reinforcing wall 51 includes a first lower mounting portion 51 a and a second lower mounting portion 51 b for mounting to the lower panel 22, and an inner mounting portion 51 c for mounting to the inner panel 10. The first lower mounting portion 51a extends outward from the upper side of the tip of the flange portion 51d and then extends outward. A plurality of beads 51e extending in the front-rear direction are formed on the base end side of the first lower mounting portion 51a with an interval in the vertical direction. The second lower mounting portion 51b further extends outward from the lower end of the tip of the flange portion 51d. The inner mounting portion 51 c extends inward from the lower portion of the front end of the reinforcing wall 51.

  The connecting wall 52 extends in the left-right direction and the up-down direction, and is a wall-shaped part that connects the upper portions of the left and right reinforcing walls 51, 51. At the upper end of the connecting wall 52, a bulkhead upper joint portion 52a joined to the lateral beam 30 and the upper panel 21 extends forward and upward. A horizontally-long rectangular through hole 52c is formed below the bulkhead upper joint 52a. A surface portion of the connecting wall 52 below the through hole 52c functions as a bulkhead lower joint portion 52b joined to the transverse beam 30.

  Here, with reference to FIG. 7, the attachment structure of the bulkhead 50 and the peripheral member will be described in detail.

  The inner side of the upper end side of the bulkhead 50 is welded to both the beam upper joint portion 33 formed at the upper end of the transverse beam 30 and the beam lower joint portion 34 formed at the lower end of the transverse beam 30 by welding. Yes. Specifically, the bulkhead upper joint portion 52a is vertically overlapped with the beam upper joint portion 33 and joined by welding. The bulkhead lower joint portion 52b is overlapped with the beam lower joint portion 34 in the front-rear direction and joined by welding. The bulkhead 50 is joined to the lateral beam 30 from above or behind the vehicle exterior.

  The inner side of the lower end of the bulkhead 50 is joined to the inner panel 10 by welding from behind via an inner mounting portion 51c. A mounting bracket 70 is attached to the inner side of the bulkhead 50 in the middle in the vertical direction. A door lining (not shown) is fixed to the mounting bracket 70 with a clip.

  A dynamic damper 80 is directly attached to a portion of the bulk head 50 located above the attachment bracket 70. The dynamic damper 80 is a damping member that suppresses vibration of the rear door 2. The dynamic damper 80 is located between the lock member 40 and the lateral beam 30 in the vertical direction. That is, the dynamic damper 80 is located closer to the lock member 40 than the lateral beam 30.

  The outer side of the upper end of the bulkhead 50 is joined to the upper side joining portion 21d of the upper panel 21 by welding from below via the bulkhead upper joining portion 52a. The outer side of the upper end side of the bulkhead 50 is joined to the lower panel 22 by welding from the front via the first lower mounting portion 51a. The vehicle outer side at the lower end of the bulkhead 50 is joined to the lower panel 22 by welding from the front via the second lower mounting portion 51b. That is, the bulkhead 50 is joined to both the upper panel 21 and the lower panel 22 by welding. Thereby, the upper panel 21 and the lower panel 22 are connected via the bulkhead 50, and the connection strength between the two is increased.

  The upper panel 21 and the lower panel 22 have an upper side connecting surface 21e and a lower side connecting surface 22a for connecting to each other. The upper side connection surface 21 e extends rearward from the lower end of the upper panel 21. The lower side connection surface 22 a extends forward from the upper end of the lower panel 22. The upper-side connecting surface 21e and the lower-side connecting surface 22a are stacked one above the other and joined by welding.

  The beam lower joint 34 of the lateral beam 30 and the first lower mounting portion 51a that is the joint between the bulkhead 50 and the lower panel 22 are at the same height. The upper side coupling surface 21e and the lower side coupling surface 22a are located above the first lower mounting portion 51a and are positioned between the beam upper side joint portion 33 and the beam lower side joint portion 34 in the vertical direction. The beam upper joint portion 33 of the transverse beam 30, the bulkhead upper joint portion 52a of the bulkhead 50, and the upper side joint portion 21d of the outer panel 20 are vertically stacked and integrally joined by welding. Yes. The beam lower joint 34 is joined to the lower panel 22 via the bulkhead 50 (second lower attachment 51b). The lateral beam 30 indirectly reinforces the upper side connection surface 21e and the lower side connection surface 22a, which are connection surfaces between the upper panel 21 and the lower panel 22, via the bulkhead 50. A rear window glass 60 is disposed above the junction between the lateral beam 30, the bulkhead 50, and the outer panel 20.

  The door structure 1 according to the present embodiment is basically configured as described above. Next, the function and effect will be described.

  According to the present embodiment, the bulkhead 50 connected to the lock member 40 and extending toward the transverse beam 30 is joined to both the beam upper joint portion 33 and the beam lower joint portion 34 of the transverse beam 30. Therefore, the rigidity of the transverse beam 30 with respect to the load can be sufficiently increased. Thereby, since it becomes difficult to deform | transform the horizontal beam 30 when a load is added, the loss of the design property by deformation | transformation of the outer panel 20 is suppressed.

  Further, according to the present embodiment, since the bulkhead 50 is joined to the lateral beam 30 from the outside of the vehicle, when a load is applied from the outside of the vehicle, the bulkhead 50 and the lateral beam 30 are disconnected. It becomes difficult and it becomes difficult to be influenced by the height position of the load action. Thereby, since the load applied to the bulkhead 50 can be received in cooperation with the bulkhead 50 and the lateral beam 30, the amount of displacement in the in-vehicle direction can be minimized. Furthermore, by joining the bulkhead 50 to the outer panel 20 that is the outer design surface of the rear door 2, the distance between the bulkhead 50 and the outer panel 20 can be reduced, and the structure of the bulkhead 50 can be simplified.

  Further, according to the present embodiment, since the bulkhead 50, the lateral beam 30, and the outer panel 20 are integrally joined at the same location, it is possible to receive the load applied to any of the three members in cooperation, The rigidity of the entire rear door 2 can be greatly improved. Furthermore, the rear window glass 60 disposed above the joint location of the three members can be stably held.

  Moreover, according to this embodiment, since the outer panel 20 is divided into two by the upper panel 21 and the lower panel 22, the rear door 2 excellent in the external appearance which is not restricted by moldability can be manufactured.

  Further, according to the present embodiment, since the bulkhead 50 is joined to both the upper panel 21 and the lower panel 22 to reinforce the bulkhead 50, the outer panel 20 is divided into two even if the outer panel 20 is divided into two. It is possible to suppress a decrease in rigidity as a whole.

  In addition, according to the present embodiment, the lateral beam 30 indirectly reinforces the upper side connection surface 21e and the lower side connection surface 22a, which are the connection surfaces of the upper panel 21 and the lower panel 22, via the bulkhead 50. Even if 20 is divided into two, the rigidity reduction of the outer panel 20 as a whole can be suppressed.

  Further, according to the present embodiment, since the dynamic damper 80 is attached to the bulkhead 50 located closer to the lock member 40 than the transverse beam 30, the vibration absorption efficiency with respect to the vibration input from the lock member 40 is increased. Can do.

  As mentioned above, although the door structure 1 which concerns on this embodiment was demonstrated in detail with reference to drawings, this invention is not limited to this, In the range which does not deviate from the main point of this invention, it can change suitably.

  For example, although the present invention is applied to the rear door 2 in the embodiment, the present invention can also be applied to a front side door and a rear side door.

  In the embodiment, welding is exemplified as a joining means for each member, but each member may be joined by a fastener such as a bolt.

V Car 1 Door structure 2 Rear door (door)
3 Body 4 Tailgate opening (opening)
DESCRIPTION OF SYMBOLS 10 Inner panel 11 Frame part 20 Outer panel 21 Upper panel 21d Upper side junction part 21e Upper side connection surface (connection surface)
22 Lower panel 22a Lower side connection surface (connection surface)
30 transverse beam 33 beam upper joint (upper joint)
34 Beam lower joint (lower joint)
40 Lock member 50 Bulkhead 51a First lower mounting portion 51b Second lower mounting portion 51c Inner mounting portion 52a Bulkhead upper joint portion 52b Bulkhead lower joint portion 60 Rear window glass 80 Dynamic damper (damping member)

Claims (6)

A door structure that covers the opening of the vehicle body so as to be openable and closable,
A frame with a shape along the outer shape of the door;
A lateral beam connected to the frame portion and extending in a lateral width direction of the door;
A locking member disposed below the lateral beam and locking the door to the vehicle body;
A bulkhead connected to the locking member and extending toward the transverse beam,
The transverse beam has an upper joint provided on the upper end side, and a lower joint provided on the lower end side,
The said bulkhead is joined to both the said upper side junction part and the said lower side junction part, The door structure characterized by the above-mentioned.   The door structure according to claim 1, wherein the bulkhead is joined to the lateral beam from the outside of the vehicle. An outer panel disposed outside the transverse beam and the bulkhead;
The door structure according to claim 1 or 2, wherein the bulkhead, the transverse beam, and the outer panel are integrally joined at the same location. The outer panel includes an upper panel disposed above, and a lower panel disposed below the upper panel and separate from the upper panel.
The door structure according to claim 3, wherein the bulkhead is joined to both the upper panel and the lower panel. The upper panel and the lower panel each have a connecting surface for connecting to each other,
The door structure according to claim 4, wherein the connecting surface is located between the upper joint and the lower joint in the vertical direction.   The door structure according to any one of claims 1 to 5, wherein a damping member that suppresses vibration of the door is attached to the bulkhead.

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