JP5737167B2 - Vehicle door structure - Google Patents

Description

  The present invention relates to a vehicle door structure, and more particularly, to a vehicle door structure in which a door includes a pillar portion.

  2. Description of the Related Art Conventionally, a center pillar-less vehicle structure is known in which when a side door is opened, a continuous door opening without a partition is formed on the side of the vehicle. Usually, in such a center pillar-less vehicle, a vehicle door structure is employed in which a side door is provided with a pillar portion for ensuring rigidity at the time of a vehicle side portion collision. For example, in the vehicle door structure disclosed in Patent Document 1, reinforcing members such as a front door rear reinforcement, a vertical reinforcement, and a vertical impact bar are provided on the side door to improve the door rigidity. .

  However, the efficiency of load transmission from the door outer panel to the reinforcing member at the time of the vehicle rollover is not taken into consideration, and improvement of the load transmission efficiency is required.

JP 2004-122872 A

In view of the above facts, an object of the present invention is to provide a vehicle door structure that improves the efficiency of load transmission from a door outer panel to a reinforcing member provided in the door when the vehicle rolls over.

  According to a first aspect of the present invention, there is provided a vehicle door structure including a door outer panel constituting an outer plate of a vehicle door, a door inner disposed at a vehicle inner side than the door outer panel, and connected to the door outer panel at a door end. A panel and a door inner panel disposed at a position closer to the vehicle outer side than the door outer panel, and an upper portion is joined to the door inner panel at a position spaced from the door outer panel, and a receiving portion extending from the door outer panel side to the vehicle width direction inner side of the joint portion A center pillar inner disposed in the vehicle vertical direction, and a connecting portion that connects the door outer panel and the center pillar inner in a longitudinal section in the vehicle width direction and linearly with the receiving portion. , And a closed cross section that forms a closed cross section from the connection portion to the upper end of the door.

  In the first aspect of the present invention, the center pillar inner and the door outer panel are connected by the connecting portion. And the closed cross-section part is formed in the door upper end side from the connection part by making a connection part into a part. Thereby, the intensity | strength and rigidity of a door upper end side can be made high. Further, since the receiving portion and the connecting portion of the center pillar inner are linear in the longitudinal section in the vehicle width direction, the transmission direction of the load input to the door outer panel is linear. Therefore, the input load can be efficiently transmitted to the receiving portion, that is, the center pillar inner.

  In the vehicle door structure according to a second aspect of the present invention, a center pillar outer extending in the vehicle vertical direction is disposed between the center pillar inner and the door outer panel, and one end of the connecting portion is the center of the center. It is joined to a portion of the pillar outer that is spaced from the door outer panel, and the other end is joined to the door outer panel, and is constituted by a door frame reinforcement. A crossing portion that is spaced from the connecting portion and is opposed to the connecting portion is formed on the vehicle upper side of the joint portion, and the closed cross-section portion is configured between the center pillar outer and the door frame reinforcement. It is characterized by being.

  In a second aspect of the present invention, a closed cross section is formed with the center pillar outer using a door frame reinforcement as a separate member. Therefore, the rigidity and strength of the door upper end can be easily adjusted by changing the rigidity and strength of the door frame reinforcement.

  According to a third aspect of the present invention, there is provided a vehicle door structure in which a center pillar outer extending in the vehicle vertical direction is disposed between the center pillar inner and the door outer panel, and an upper end portion of the center pillar outer is the door. Joined to the upper end portion of the outer panel, the center pillar outer extends from the lower end of the joined portion inward in the vehicle width direction to form the connecting portion, and the closed cross-sectional portion includes the center pillar outer and the door inner panel It is comprised between these.

  According to invention of Claim 3, a closed cross-section part can be comprised using a center pillar outer and a door inner panel, without adding components. Therefore, the rigidity and strength of the upper end of the door can be improved without increasing the number of parts.

According to a fourth aspect of the present invention, there is provided a vehicle door structure including a door outer panel constituting an outer plate of a vehicle door, a door disposed on the vehicle inner side than the door outer panel, and connected to the door outer panel at a door end. An inner panel and an upper portion disposed on the vehicle inner side than the door outer panel and disposed below the upper end at a position spaced apart from the door outer panel are joined to the door inner panel, and the joint portion from the door outer panel side A receiving portion extending inward in the vehicle width direction is formed, and a center pillar inner disposed in the vertical direction of the vehicle, and the door outer panel and the receiving portion that form a straight line with the receiving portion in a longitudinal section in the vehicle width direction. A connecting portion formed of a part of the center pillar inner that connects the connecting portion and the connecting portion as a part from the connecting portion to the door upper end side. Ain'napaneru that and a closed cross-section portion which constitutes a closed cross section between the center pillar inner.

  According to invention of Claim 4, a closed cross-section part can be comprised using a door inner panel and a center pillar inner, without adding components. Therefore, the rigidity and strength of the upper end of the door can be improved without increasing the number of parts.

  According to the vehicle door structure of the present invention, the load input to the upper portion of the door outer panel can be efficiently transmitted to the center pillar inner. Further, the strength and rigidity of the upper portion of the door can be increased.

1 is a side view of a vehicle to which a vehicle door structure according to a first embodiment of the present invention is applied. It is AA sectional drawing of FIG. It is an expanded sectional view of the upper part of the door structure for vehicles concerning a 1st embodiment. FIG. 2 is a partially exploded perspective view of the access door of FIG. 1. It is an expanded sectional view of the upper part of the door structure for vehicles concerning a 2nd embodiment. It is an expanded sectional view of the upper part of the door structure for vehicles concerning a 3rd embodiment.

[First Embodiment]
Hereinafter, a first embodiment of a vehicle door structure of the present invention will be described with reference to the drawings. Note that an arrow FR appropriately shown in the drawing indicates a forward direction in the vehicle longitudinal direction, an arrow UP indicates an upward direction in the vehicle vertical direction, and an arrow IN indicates an inner side in the vehicle width direction. In the following description, when using the front-rear direction and the up-down direction, unless otherwise specified, the front-rear direction of the vehicle and the up-down direction of the vehicle are indicated.

  FIG. 1 shows a side view of a vehicle 10 to which a vehicle door structure 12 according to the present invention is applied. The vehicle 10 is provided with a front side door 14 and an access door 16 side by side in the vehicle longitudinal direction.

  The front side door 14 has a front part in the front-rear direction of the vehicle connected to the side surface of the vehicle body via a door hinge 18, and the access door 16 has a rear part in the front-rear direction of the vehicle connected to the side surface of the vehicle body via a door hinge 20. Connected. The front side door 14 and the access door 16 are of a so-called double door type, and are configured to open and close a center pillar-less door opening 22 provided on the side surface of the vehicle body.

  As shown in FIG. 2, a roof side rail 24 is provided on the upper side of the vehicle body side along the vehicle front-rear direction. A rocker 26 is provided below the vehicle body side along the vehicle longitudinal direction. As shown in FIG. 3, the roof side rail 24 is configured to have a closed cross section by a roof side outer 24 </ b> A and a roof side inner 24 </ b> B. A side member outer 28 is provided on the vehicle outer side of the roof side outer 24A, and an upper door striker plate 23 is provided on the vehicle inner side of the roof side inner 24B. The roof side rail 24 is connected to the roof panel 25.

  As shown in FIG. 4, the access door 16 has a door outer panel 30 and a door inner panel 32. The door outer panel 30 and the door inner panel 32 extend in the vehicle front-rear direction and the vehicle vertical direction, respectively, are arranged to face each other in the plate thickness direction, and at the outer peripheral edge portions of each other except for the vehicle front end edge. Are combined. The door inner panel 32 is formed with a front upper joint 33 at the front upper end. The length in the vehicle front-rear direction below the front upper joint portion 33 of the door inner panel 32 is shorter than the door outer panel 30, and the front end of the door inner panel 32 is rearward in the vehicle front-rear direction than the door outer panel 30. Has been placed.

  A center pillar outer 34 and a center pillar inner 36 (see FIG. 2) are disposed on the inner side of the door outer panel 30 in the vehicle width direction where the door inner panel 32 is not disposed. The center pillar inner 36 is disposed on the inner side in the vehicle width direction than the center pillar outer 34. The center pillar outer 34 and the center pillar inner 36 each extend in the vehicle vertical direction, and both form a closed cross section. The center pillar outer 34 and the center pillar inner 36 are composed of members having higher strength and rigidity than the door outer panel 30 and the door inner panel 32. The center pillar outer 34 and the center pillar inner 36 ensure the strength and rigidity of the side surface of the vehicle when the access door 16 is closed.

  As shown in FIG. 2, the center pillar outer 34 is disposed on the inner side in the vehicle width direction of the door outer panel 30. As shown in FIG. 3, the center pillar outer 34 is spaced apart from the door outer panel 30. An upper separation portion 34A is formed. On the upper side of the upper separation portion 34A of the center pillar outer 34, a crossing portion 34B is formed that approaches the door outer panel 30 and further moves upward. A pillar outer upper end portion 34 </ b> C sandwiched between the door outer panel 30 and the door inner panel 32 is formed above the crossing portion 34 </ b> B of the center pillar outer 34.

As shown in FIG. 4, a door frame reinforcement 38 is disposed on the outer side of the center pillar outer 34 in the vehicle width direction. The door frame reinforcement 38 is substantially crank-shaped in cross section and has one end 38C, a connecting portion 38B, and the other end 38A. As shown in FIG. 3, the other end 38 </ b> A is joined to the inside of the door outer panel 30. The one end portion 38C is joined to the outer side in the vehicle width direction of the upper separation portion 34A of the center pillar outer 34. The connecting portion 38B is spaced apart from the transverse portion 34B of the center pillar outer 34 and is disposed substantially in parallel. The door frame reinforcement 38, the center pillar outer 34 and the upper separation portion 34A and the crossing portion 34B constitute a closed cross section 39.
The transverse portion 34B and the connecting portion 38B are preferably disposed perpendicular to the load input surface of the rollover tester device D (hereinafter simply referred to as “device D”).

  The front upper joint portion 33 of the door inner panel 32 has a substantially crank-shaped cross section, an inner panel upper end portion 33A on the upper side of the vehicle, an inner panel lower end portion 33C on the lower side of the vehicle, and an inner panel intermediate portion disposed therebetween. It has a portion 33B. The inner panel upper end portion 33A is joined to the inner side surface in the vehicle width direction of the pillar outer upper end portion 34C of the center pillar outer 34. The front upper end portion of the access door 16 is stacked in the order of the door outer panel 30, the door frame reinforcement 38, the center pillar outer 34, and the door inner panel 32 from the outside in the vehicle width direction. And the front-end | tip part of the door outer panel 30 is folded back so that the front-end | tip of another member may be covered, and these members are joined.

  The inner panel lower end portion 33C of the front upper joint portion 33 is joined to the inner side in the vehicle width direction of the upper separation portion 34A of the center pillar outer 34. The inner panel intermediate portion 33B is disposed on the upper side of the transverse portion 34B of the center pillar outer 34 so as to be separated from the transverse portion 34B.

  The pillar inner upper end portion 36A of the center pillar inner 36 is joined to the inner side of the inner panel lower end portion 33C in the vehicle width direction. On the lower side of the pillar inner upper end portion 36A, a receiving portion 36B is formed continuously from the pillar inner upper end portion 36A and extending obliquely downward on the inner side in the vehicle width direction. The receiving portion 36B is arranged to form a straight line with the connecting portion 38B of the door frame reinforcement 38 in the longitudinal section in the vehicle width direction. A vertical wall portion 36C of the center pillar inner 36 is formed below the receiving portion 36B toward the vehicle lower side.

  Next, the operation of the vehicle door structure 12 will be described.

  A load from the device D assuming that the vehicle 10 rolls over is input to the upper part of the roof side rail 24 and the door outer panel 30. This load is received by the closed cross-section 39 having high strength and rigidity formed on the upper portion of the door outer panel 30. Therefore, deformation of the vehicle side surface portion can be suppressed.

  The load received by the closed section 39 is transmitted to the center pillar outer 34 and the center pillar inner 36. As described above, since the longitudinal section in the vehicle width direction of the connecting portion 38B and the receiving portion 36B is linear, the input load is transmitted linearly from the connecting portion 38B to the receiving portion 36B, and the load is efficiently centered. It can be transmitted to the pillar inner 36. Therefore, the center pillar inner 36 can receive a load efficiently.

In the present embodiment, a separate door frame reinforcement 38 is used. Therefore, the rigidity and strength of the front upper end of the access door 16 can be easily adjusted by changing the rigidity and strength of the door frame reinforcement 38.

[Second Embodiment]
Next, a second embodiment of the vehicle door structure of the present invention will be described. In the present embodiment, the same parts as those in the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted. The vehicle door structure 40 of the present embodiment is the same as that of the first embodiment except for the configuration of the access door 16 other than the front upper portion in the vehicle front-rear direction.

  As shown in FIG. 5, the center pillar outer 34 is disposed on the inner side in the vehicle width direction of the door outer panel 30, and an upper separation portion 34 </ b> A that is separated from the door outer panel 30 is formed on the upper portion of the center pillar outer 34. ing. On the upper side of the upper separation portion 34A of the center pillar outer 34, a crossing portion 34B is formed that approaches the door outer panel 30 and further moves upward. In the present embodiment, the crossing part 34 </ b> B serves as a connecting part that connects the door outer panel 30 and the center pillar inner 36. A pillar outer upper end portion 34 </ b> C is formed above the transverse portion 34 </ b> B of the center pillar outer 34. The pillar outer upper end portion 34 </ b> C is joined to the inner side surface of the door outer panel 30.

  An inner panel upper end portion 33 </ b> A of the door inner panel 32 is joined to a pillar outer upper end portion 34 </ b> C of the center pillar outer 34. The front upper end of the access door 16 is overlapped in the order of the door outer panel 30, the center pillar outer 34, and the door inner panel 32 from the outside in the vehicle width direction. And the front-end | tip part of the door outer panel 30 is folded back so that the front-end | tip of another member may be covered, and these members are joined.

  The inner panel lower end 33C of the door inner panel 32 is joined to the outer side in the vehicle width direction of the upper separation portion 34A of the center pillar outer 34. An inner panel intermediate portion 33B between the inner panel upper end portion 33A and the inner panel lower end portion 33C is disposed so as to face the upper side of the transverse portion 34B of the center pillar outer 34. The inner panel intermediate portion 33B, the inner panel lower end portion 33C, the crossing portion 34B, and the pillar outer upper end portion 34C constitute a closed cross section 42.

  The pillar inner upper end portion 36A of the center pillar inner 36 is joined to the outer side in the vehicle width direction of the inner panel lower end portion 33C. On the lower side of the pillar inner upper end portion 36A, a receiving portion 36B is formed continuously from the pillar inner upper end portion 36A and extending obliquely downward on the inner side in the vehicle width direction. The receiving portion 36B is arranged to form a straight line with the transverse portion 34B of the center pillar outer 34 in the longitudinal section in the vehicle width direction.

Next, the operation of the vehicle door structure 40 will be described.
A load from the device D assuming that the vehicle 10 rolls over is input to the upper part of the roof side rail 24 and the door outer panel 30. This load is received by the closed section 42 formed on the upper portion of the door outer panel 30 having high strength and rigidity. Therefore, deformation of the vehicle side surface portion can be suppressed.

  The load received by the closed cross section 42 is transmitted to the center pillar outer 34 and the center pillar inner 36. As described above, since the longitudinal section in the vehicle width direction of the transverse portion 34B and the receiving portion 36B of the center pillar outer 34 is linear, the input load is transmitted linearly from the transverse portion 34B to the receiving portion 36B. The center pillar inner 36 can be transmitted efficiently. Therefore, the center pillar inner 36 can receive a load efficiently.

  Further, in the present embodiment, the closed cross-section portion 42 is constituted by the pillar outer upper end portion 34C which is a part of the center pillar outer 34 and the inner panel upper end portion 33A which is a part of the door inner panel 32. Without increasing the number of components, and an increase in the number of components can be suppressed to form a simple structure.

[Third Embodiment]
Next, a third embodiment of the vehicle door structure of the present invention will be described. In the present embodiment, the same parts as those in the first and second embodiments are denoted by the same reference numerals, and detailed description thereof is omitted. The vehicle door structure 50 of the present embodiment is the same as the first and second embodiments except for the configuration of the access door 16 other than the upper part on the front side in the vehicle front-rear direction.

  In the present embodiment, as shown in FIG. 6, the pillar inner upper end portion 36 </ b> A of the center pillar inner 36 is joined to the inner side of the upper end of the door outer panel 30. From the lower end of the pillar inner upper end portion 36A, a linear portion 36S is formed by extending linearly in an obliquely downward direction on the inner side in the vehicle width direction.

  On the other hand, the center pillar outer 34 is disposed between the door outer panel 30 and the center pillar inner 36. The upper portion of the center pillar outer 34 is gradually separated from the door outer panel 30, and the pillar outer upper end portion 34 </ b> C is bent toward the door outer panel 30 side and joined to the lower surface of the straight portion 36 </ b> S of the center pillar inner 36.

  The lower side of the inner panel lower end portion 33C of the door inner panel 32 is bent toward the vehicle width direction side to form an inner panel lower joint portion 33D. The inner panel lower joint portion 33 </ b> D is joined to the upper surface of the straight portion 36 </ b> S on the inner side in the vehicle width direction than the center pillar outer 34. The inner panel upper end portion 33A is joined to the inner side surface in the vehicle width direction of the pillar inner upper end portion 36A. The front upper end of the access door 16 is overlapped in the order of the door outer panel 30, the center pillar inner 36, and the door inner panel 32 from the outside in the vehicle width direction. And the front-end | tip part of the door outer panel 30 is folded back so that the front-end | tip of another member may be covered, and these members are joined.

  Between the inner panel upper end portion 33A and the inner panel lower joint portion 33D, an inner panel intermediate portion 33B and an inner panel lower end portion 33C are formed. The inner panel intermediate portion 33B is disposed so as to face the straight portion 36S of the center pillar inner 36 while being separated. Further, the inner panel lower end portion 33C is disposed so as to be opposed to the pillar inner upper end portion 36A. The inner panel intermediate portion 33B, the inner panel lower end portion 33C, the straight portion 36S, and the pillar inner upper end portion 36A constitute a closed cross section 46.

  Next, the operation of the vehicle door structure 50 will be described.

  A load from the device D assuming that the vehicle 10 rolls over is input to the upper part of the roof side rail 24 and the door outer panel 30. This load is received by the closed section 46 formed on the upper portion of the door outer panel 30 having high strength and rigidity. Therefore, deformation of the vehicle side surface portion can be suppressed.

  Further, since the longitudinal section in the vehicle width direction of the straight portion 36S of the center pillar inner 36 is linear from the door outer panel 30 to the vertical wall portion 36C of the center pillar inner 36, the input load is transmitted linearly, The load can be transmitted to the center pillar inner 36 efficiently. Therefore, the center pillar inner 36 can receive a load efficiently.

  Further, in the present embodiment, the closed cross-section portion 46 is constituted by the pillar inner upper end portion 36A and the linear portion 36S of the center pillar inner 36, and the inner panel intermediate portion 33B and the inner panel lower end portion 33C of the door inner panel 32. A separate member is not required, and an increase in the number of parts can be suppressed, and it can be formed easily.

12 Vehicle door structure 16 Access door (vehicle door)
30 Door outer panel 32 Door inner panel 33 Front upper joint (door inner panel)
34 Center pillar outer 34B Crossing portion 36 Center pillar inner 36B Receiving portion 36S Straight portion (connecting portion, receiving portion)
38 door frame reinforcement 38A other end 38B connecting portion 38C one end 39 closed section 40 vehicle door structure 42 closed section 46 closed section 50 vehicle door structure

Claims (4)

A door outer panel constituting the outer plate of the vehicle door;
A door inner panel disposed on the vehicle inner side than the door outer panel and connected to the door outer panel at a door end;
It is arranged on the vehicle inner side than the door outer panel, the upper part is joined to the door inner panel at a position separated from the door outer panel, and a receiving part is formed extending from the door outer panel side to the vehicle width direction inner side of the joined part. A center pillar inner disposed in the vertical direction of the vehicle,
A connecting portion that connects the door outer panel and the center pillar inner in a straight line with the receiving portion in a longitudinal section in the vehicle width direction, and closes the connecting portion as a part from the connecting portion to the upper end of the door. A closed cross-sectional portion constituting a cross-section;
A vehicle door structure comprising: A center pillar outer extending in the vehicle vertical direction is disposed between the center pillar inner and the door outer panel,
The connecting portion is constituted by a door frame reinforcement in which one end is joined to a portion of the center pillar outer that is spaced from the door outer panel and the other end is joined to the door outer panel.
On the vehicle upper side than the joint portion with the one end portion of the door frame reinforcement of the center pillar outer, a transverse portion that is spaced from and is opposed to the connecting portion is formed to extend,
The vehicle door structure according to claim 1, wherein the closed cross-section portion is configured between the center pillar outer and the door frame reinforcement. A center pillar outer extending in the vehicle vertical direction is disposed between the center pillar inner and the door outer panel,
An upper end portion of the center pillar outer is joined to an upper end portion of the door outer panel, and the center pillar outer is extended inward in the vehicle width direction from the lower end of the joint portion to constitute the connecting portion,
The vehicle door structure according to claim 1, wherein the closed cross section is configured between the center pillar outer and the door inner panel. A door outer panel constituting the outer plate of the vehicle door;
A door inner panel disposed on the vehicle inner side than the door outer panel and connected to the door outer panel at a door end;
Arranged on the vehicle inner side of the door outer panel, and an upper portion disposed below the upper end at a position separated from the door outer panel is joined to the door inner panel, and the joint portion is located on the inner side in the vehicle width direction from the door outer panel side. A center pillar inner formed with a receiving portion extending toward the vehicle and disposed in the vehicle vertical direction;
Wherein the center pillar connection portion formed in a part of the inner which form the receiving and linearly coupling the said receiving and said door outer panel in longitudinal section in the vehicle width direction, as a part of the connecting portion A closed cross section that forms a closed cross section between the door inner panel and the center pillar inner on the door upper end side from the connecting portion;
A vehicle door structure comprising: