JP6670498B2 - Body side structure - Google Patents

Description

  The present invention relates to a side structure of a vehicle body.

BACKGROUND ART The body of a vehicle such as an automobile has an occupant room in which an occupant gets on and sits on a seat. In the passenger compartment, an entrance for the passenger to get on and off is formed.
For example, when another vehicle body collides with such an entrance, a large opening is formed by the entrance, so that it is difficult for the basic structure of the vehicle body to absorb the impact load.
Therefore, in Patent Literature 1, a door beam is provided in a door that can be opened and closed with respect to the entrance. This makes it difficult for another vehicle body to enter the passenger compartment from the entrance / exit as it is.

Japanese Patent Application Laid-Open No. 2012-206618

However, the door beam as in Patent Literature 1 simply extends in the door in the front-rear direction.
For this reason, when the door is deformed, the door beam is, at best, at its both ends outside the front pillar provided along the front edge of the entrance, for example, and outside the center pillar vertically erected in the center of the entrance. It just hits. As a result, when another vehicle body strongly hits from the side, the door beam may bend and another vehicle body may enter the passenger compartment from the entrance.
If the length of the door beam is shorter than the distance between the front pillar and the center pillar, the door beam cannot perform such a function.

  As described above, there is a demand for a vehicle to improve the impact absorption performance in a side collision.

The side structure of the vehicle body according to the present invention includes a vehicle body in which an entrance / exit of a passenger compartment is formed between a front pillar and a rear pillar, and the entrance / exit is divided forward and backward by a center pillar; A front door that opens and closes between the pillars, a rear door that opens and closes between the center pillar and the rear pillar, a front door beam extending along the front-rear direction in the front door, and an inside of the rear door. And a rear door beam extending in the front-rear direction at the front door beam, the front door beam is provided such that a rear end of the center pillar side is located outside of a front end of the front pillar side in a vehicle width direction, The rear door beam is aligned with the front door beam at the same height and the front end on the center pillar side is the rear end on the rear pillar side. Provided so as to be positioned in Rikurumahaba outwardly, the front end portion of the rear portion and the rear door beam of the front door beam is formed with a fitting portion to be fitted to each other, to the front door and the rear door On the other hand, when a structure such as another vehicle body collides from the side, the front door beam and the rear door beam are connected to each other outside the center pillar, and a vehicle width direction is formed between the front pillar and the rear pillar. An outwardly convex arch shape is formed.

  Preferably, at least one of the front door beam and the rear door beam projects out of the front door or the rear door by deforming the front door and the rear door due to a side impact load, whereby the front door beam And the rear door beam may be connected to each other.

  Preferably, the front door beam and the rear door beam are provided in a straight line at the height of a bumper of another vehicle body.

In the present invention, the front door beam is provided such that the rear end of the center pillar side is located outside the front end on the front pillar side in the vehicle width direction. The front end is provided so as to be positioned outside the rear end on the rear pillar side in the vehicle width direction, and when a structure such as another vehicle body collides against the front door and the rear door from the side, the front door beam and the rear door beam are Outside the center pillar, the front pillar and the rear pillar are connected to each other to form an arch shape projecting outward in the vehicle width direction between the front pillar and the rear pillar.
By forming an arch-shaped shock absorbing structure projecting outward in the vehicle width direction between the front pillar and the rear pillar in this way, other structures such as a vehicle body from the side toward the entrance and exit. When a collision occurs, the impact can be absorbed by an arch-shaped impact absorbing structure between the front pillar and the rear pillar. As a result, a higher shock absorbing performance can be obtained as compared with a case where both ends of the door beam simply contact the outside of the front pillar and the outside of the center pillar. Before other structures such as a vehicle body enter the passenger compartment, the energy of the structures can be absorbed and safety can be improved.

FIG. 1 is a schematic perspective view of a side surface of a vehicle body of an automobile according to an embodiment of the present invention. FIG. 2 is a schematic cross-sectional view of the vehicle body of FIG. FIG. 3 is a schematic diagram of a longitudinal section of the vehicle body in FIG. 1 in a vehicle width direction. FIG. 4 is an explanatory diagram of a side structure applied to the vehicle body of FIG. FIG. 5 is a diagram illustrating a deformation operation of the front door beam and the rear door beam of FIG. 4 at the time of a side collision. FIG. 6 is an explanatory diagram of an impact load in a side collision and an absorbing structure thereof. FIG. 7 is an explanatory diagram of a side structure according to a modification. FIG. 8 is an explanatory diagram of a side structure according to another modification.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is a schematic view of a vehicle 1 according to an embodiment of the present invention, as seen through a side surface of a vehicle body 2.
FIG. 2 is a schematic cross-sectional view of the vehicle body 2 of the automobile 1 in FIG.
FIG. 3 is a schematic view of a longitudinal section of the automobile 1 in FIG. 1 in a vehicle width direction.

The vehicle body 2 shown in FIGS. 1 to 3 includes an occupant room 4 in which a seat 6 on which an occupant sits is installed, a front room 3 located in front of the occupant room 4, a rear room 5 located behind the occupant room 4, Having.
A floor panel 11 is provided on the lower surface of the passenger compartment 4. A pair of side sills 12 are provided on both sides of the floor panel 11 in the vehicle width direction.
A roof panel 13 is provided on the upper surface of the passenger compartment 4. A pair of roof rails 14 are provided on both sides of the roof panel 13 in the vehicle width direction.
The passenger room 4 and the front room 3 are separated by a toe board 15. The toe board 15 is erected on the front edge of the floor panel 11. A pair of front pillars 16 are provided on both sides of the toe board 15 in the vehicle width direction. The front pillar 16 extends vertically from the front end of the side sill 12 to the front end of the roof rail 14 along the front corner of the passenger compartment 4. The front pillar 16 may be formed by caulking outer peripheral edges of an inner panel 16A and an outer panel 16B in a hollow state.
The passenger compartment 4 and the rear compartment 5 are separated by a rear panel 17. The rear panel 17 is erected on the rear edge of the floor panel 11. A pair of rear pillars 18 are provided on both sides of the rear panel 17 in the vehicle width direction. The rear pillar 18 extends vertically from the rear end of the side sill 12 to the rear end of the roof rail 14 along the rear corner of the passenger compartment 4. The rear pillar 18 may be formed by caulking outer peripheral edges of an inner panel 18A and an outer panel 18B in a hollow state.
A pair of entrances 19 is provided on both left and right sides of the passenger compartment 4. The entrance 19 is surrounded by the side sill 12, the front pillar 16, the rear pillar 18, and the roof rail 14.
A center pillar 20 is provided between the center of the side sill 12 and the center of the roof rail 14. The center pillar 20 divides the entrance 19 into front and rear. The center pillar 20 may be formed by caulking outer peripheral edges of an inner panel 20A and an outer panel 20B in a hollow state.
The entrance 19 is provided with a front door 21 for opening and closing between the front pillar 16 and the center pillar 20 and a rear door 22 for opening and closing between the center pillar 20 and the rear pillar 18.
The front door 21 may be formed by caulking outer peripheral edges of an inner panel 21A and an outer panel 21B in a hollow state. The front edge of the front door 21 is rotatably attached to the outer surface of the front pillar 16 by a hinge member. At the rear edge of the front door 21, a lock mechanism for locking to the center pillar 20 is provided. When the front door 21 is closed, its outer peripheral edge overlaps with the front pillar 16, the roof rail 14, the center pillar 20, and the side sill 12.
The rear door 22 may be formed by caulking outer peripheral edges of an inner panel 22A and an outer panel 22B in a hollow state. The front edge of the rear door 22 is rotatably attached to the outer surface of the center pillar 20 by a hinge member. At the rear edge of the rear door 22, a lock mechanism for locking to the rear pillar 18 is provided. When the front door 21 is closed, its outer peripheral edge overlaps with the center pillar 20, the roof rail 14, the rear pillar 18, and the side sill 12.

By the way, in such a vehicle body 2, for example, it is conceivable that another vehicle body collides against the passenger compartment 4 from the side of the vehicle body 2. Since large openings are formed by the entrances 19 on both sides of the passenger compartment 4 in the vehicle width direction, it is difficult for the basic structure of the vehicle body 2 to absorb the impact load.
Therefore, for example, as shown in FIG. 1, a front door beam 23 and a rear door beam 24 extending along the front-rear direction are provided for a front door 21 and a rear door 22 which are provided to be able to open and close with respect to the entrance 19. Can be considered.
However, if a door beam extending in the front-rear direction is provided in the door, the front end and the rear end of the door beam hit the outside of the pillar at best. The door beam is fixed to the door but not to the pillar itself. When another vehicle body strongly hits from the side, the door beam may be bent, and the door beam may be pushed into the passenger compartment 4 from the entrance 19 together with the deformed door.
Also, unlike FIG. 1, when the length of the door beam is shorter than the interval between the pillars, it is not expected that the end of the door beam hits the outside of the pillar.
As described above, there is a demand for a vehicle to improve the impact absorption performance in a side collision.

FIG. 4 is an explanatory diagram of a side structure applied to the vehicle body 2 of FIG.
FIG. 4 shows a left side structure of the vehicle body 2. The same applies to the right side structure of the vehicle body 2.

As shown in FIG. 4, a front door beam 23 is provided in the front door 21, and a rear door beam 24 is provided in the rear door 22.
The front door beam 23 and the rear door beam 24 are formed, for example, of a highly rigid metal in a bar shape. As shown in FIG. 1, the front door beam 23 and the rear door beam 24 are arranged in a straight line at the same height position as the bumper of another vehicle body, with their height positions aligned.
The front door beam 23 has a length from the rear surface of the front pillar 16 to a position overlapping the outer surface of the center pillar 20. The front end of the front door beam 23 is provided near the inner panel 21A of the front door 21, and the rear end is provided near the outer panel 21B of the front door 21. Thus, the rear end of the front door beam 23 on the center pillar 20 side is located outside the front end on the front pillar 16 side in the vehicle width direction.
The rear door beam 24 has a length from a position overlapping the outer surface of the center pillar 20 to a front surface of the rear pillar 18. The front end of the rear door beam 24 is provided near the outer panel 22B of the rear door 22, and the rear end is provided near the inner panel 22A of the rear door 22. Thus, the front end of the rear door beam 24 on the side of the center pillar 20 is located outside the rear end of the side of the rear pillar 18 in the vehicle width direction.
Further, as shown in FIG. 5 described later, a fitting concave portion 25 is formed in the rear end surface of the front door beam 23 by hollowing a central portion thereof. The front end of the rear door beam 24 is formed into a conical pointed shape, and a fitting projection 26 is formed.

  FIG. 5 is a diagram illustrating a deformation operation of the front door beam 23 and the rear door beam 24 in FIG. 4 at the time of a side collision.

  As shown in FIG. 5A, before the collision, the closed front door 21 and the rear door 22 are not deformed. In this case, the front door beam 23 and the rear door beam 24 are located at predetermined positions inside the front door 21 and the rear door 22. That is, the rear end of the front door beam 23 and the front end of the rear door beam 24 are located outside the center pillar 20. The fitting recess 25 and the fitting protrusion 26 are separated from each other in the front-rear direction.

As shown in FIG. 5B, when a collision starts, the closed front door 21 and the rear door 22 start to be deformed by a load in which a structure such as another vehicle body enters from the side to the inside.
Then, first, the outer panel 21B of the closed front door 21 and the outer panel 22B of the rear door 22 are deformed inward in the vehicle width direction, and contact the rear end of the front door beam 23 and the front end of the rear door beam 24. Further, when another vehicle body enters, the rear end of the front door beam 23 and the front end of the rear door beam 24 begin to deform inward in the vehicle width direction together with the outer panels 21B and 22B. Then, as shown in FIG. 5C, the fitting projection 26 at the front end of the rear door beam 24 breaks through the front surface of the rear door 22 and protrudes forward from the rear door 22. Note that, depending on the situation of the collision, the rear end of the front door beam 23 also penetrates the rear surface of the front door 21 and projects rearward and outward from the front door 21.

  When another vehicle enters, as shown in FIG. 5 (D), the fitting projection 26 at the front end of the rear door beam 24 breaks through the rear surface of the front door 21 and enters the front door 21, and the front door beam 23. Into the fitting recess 25 at the rear end. When the other vehicle body largely enters in this way, the front door beam 23 and the rear door beam 24 are connected to each other at a position separated outside the center pillar 20.

  As shown in FIG. 4, the front end of the front door beam 23 is located at a position facing the rear surface of the front pillar 16, and the rear end of the rear door beam 24 is located at a position facing the front surface of the rear pillar 18. Therefore, the front door beam 23 and the rear door beam 24 connected to each other are pushed inward in the vehicle width direction while being connected to each other as another vehicle body enters further, so that the rear surface of the front pillar 16 and the rear pillar 18 Are sandwiched and supported from both sides by the front surface of the camera. The front door beam 23 and the rear door beam 24 are separated from the center pillar 20 to the outside in a state where the front door beam 23 and the rear door beam 24 are sandwiched and supported between the front pillar 16 and the rear pillar 18 as shown in FIG. I have.

  As described above, the front door beam 23 and the rear door beam 24 provided inside the front door 21 and the rear door 22 are deformed inward in the vehicle width direction due to a collision load caused by the entry of another vehicle body. 21 and the rear door 22, are connected to each other at a position away from the center pillar 20, and form an arch-shaped skeleton between the front pillar 16 and the rear pillar 18 that protrudes outward in the vehicle width direction. .

  FIG. 6 is an explanatory diagram of an impact load in a side collision and an absorbing structure thereof.

As shown in FIG. 6, the front door beam 23 and the rear door beam 24 are connected to each other at a position outside the center pillar 20, so that the front door beam 23 and the rear door beam 24 extend outward in the vehicle width direction between the front pillar 16 and the rear pillar 18. An arch-shaped skeletal structure that is convex toward the front is formed.
Therefore, a collision load of another vehicle body that collides with the vehicle body 2 from the side first acts on this arch-shaped load receiving structure. A part of the collision load acts on the front pillar 16 and the rear pillar 18 of the vehicle body 2 through an outwardly convex arch-shaped skeletal structure. Moreover, the load acting to escape from the arch-shaped load receiving structure to the front pillar 16 and the rear pillar 18 has a small force component in the vehicle width direction, and almost all of the force component is in the front-rear direction. Therefore, the front pillar 16 and the rear pillar 18 are unlikely to be deformed inward in the vehicle width direction. A part of the collision load of the side collision can be absorbed without deforming the front pillar 16, the center pillar 20, and the rear pillar 18 inward in the vehicle width direction. Thereafter, when another vehicle body rushes, the other vehicle body causes the center pillar 20 to apply a collision load for the first time.

As described above, in the present embodiment, the front door beam 23 is provided such that the rear end of the center pillar 20 is located outside the front end of the front pillar 16 side in the vehicle width direction. So that the front end on the center pillar 20 side is located outside of the rear end on the rear pillar 18 side in the vehicle width direction. When a structure collides, the front door beam 23 and the rear door beam 24 are connected to each other outside the center pillar 20, and have an arch shape that protrudes outward in the vehicle width direction between the front pillar 16 and the rear pillar 18. Form.
By forming an arch-shaped shock absorbing structure that protrudes outward in the vehicle width direction between the front pillar 16 and the rear pillar 18 in this manner, another vehicle body or the like from the side toward the entrance 19 is formed. When the above structure collides, the impact can be absorbed by the arch-shaped impact absorbing structure between the front pillar 16 and the rear pillar 18. As a result, a higher shock absorbing performance can be obtained as compared with the case where both ends of the door beam simply contact the outside of the front pillar 16 and the outside of the center pillar 20. Before another structure such as a vehicle body enters the passenger compartment 4, the energy of the structure can be absorbed and safety can be enhanced.

  In the present embodiment, one or both of the front door beam 23 and the rear door beam 24 project outside the front door 21 and the rear door 22 by deforming the front door 21 and the rear door 22 due to the side collision load. Thereby, the front door beam 23 and the rear door beam 24 can be connected to each other.

  Further, in the present embodiment, a fitting concave portion 25 and a fitting convex portion 26 that fit each other are formed at the rear end of the front door beam 23 and the front end of the rear door beam 24. Therefore, the front door beam 23 and the rear door beam 24 can be firmly connected to each other. Even if an impact is further input after the connection, the connection state between the front door beam 23 and the rear door beam 24 is maintained, and the collision load is reduced by the front pillar 16 and It can escape to the rear pillar 18.

  Further, in the present embodiment, the front door beam 23 and the rear door beam 24 are provided in a straight line at the height position of a bumper of another vehicle body. Therefore, the impact load of another vehicle that collides with the side surface can be absorbed by the arch-shaped impact absorbing structure that protrudes outward in the vehicle width direction.

  The above embodiment is an example of a preferred embodiment of the present invention. However, the present invention is not limited to this, and various modifications or changes can be made without departing from the spirit of the invention.

  For example, in the above embodiment, the front door beam 23 and the rear door beam 24 have a linear rod shape. In addition to this, for example, the door beam may have a rod shape curved so as to be convex outward in the vehicle width direction.

  FIG. 7 is an explanatory diagram of a side structure according to a modification.

  In FIG. 7, the rear end of the front door beam 23 arranged so that the rear end is outside the front end is bent so as to extend in the front-rear direction. In addition, the front end of the rear door beam 24 arranged so that the front end is outside the rear end is bent so as to extend in the front-rear direction. Thus, the amount of protrusion of the front door beam 23 and the rear door beam 24 outside the center pillar 20 can be suppressed.

  FIG. 8 is an explanatory diagram of a side structure according to another modification.

8, a center connecting member 27 extending in the front-rear direction is provided outside the center pillar 20 at a height position between the front door beam 23 and the rear door beam 24. An elastic member 28 is provided between the center connecting member 27 and the outer surface of the center pillar 20. Thereby, the center connecting member 27 can swing with respect to the center pillar 20.
The rear end of the front door beam 23 is located on the front side of the center pillar 20. The front end of the rear door beam 24 is located behind the center pillar 20. Thus, there is no need to provide the front door beam 23 and the rear door beam 24 outside the center pillar 20.
Then, when another vehicle body collides from the side, the front door beam 23 and the rear door beam 24 are pushed inward by the collision load, and the rear end of the deformed front door beam 23 is fitted with the front end of the center connecting member 27, and The front end of the rear door beam 24 fits with the rear end of the center connecting member 27. Thereby, the front door beam 23 and the rear door beam 24 are connected to each other.
Even in this case, the front door beam 23 and the rear door beam 24 can be connected to each other outside the center pillar 20, and the connection state between the front door beam 23 and the rear door beam 24 can be maintained even when an impact is input.

1 ... Car (vehicle)
2 ... body 3 ... front room 4 ... passenger room 5 ... rear room 6 ... seat 11 ... floor panel 12 ... side sill 13 ... roof panel 14 ... roof rail 15 ... toe board 16 ... front pillar 16A ... inner panel 16B ... outer panel 17 ... rear panel 18A ... inner panel 18B ... outer panel 18 ... rear pillar 19 ... doorway 20 ... center pillar 20A ... inner panel 20B ... outer panel 21 ... front door 21A ... inner panel 21B ... outer panel 22 ... rear door 22A ... inner panel 22B ... outer panel 23 ... front door beam 23A ... Main beam part 23B ... Bend part 24 ... Rear door beam 24A ... Main beam part 24B ... Bend part 25 ... Fit recess (fitting part)
26 ... fitting projection (fitting part)
27 center connecting member 28 elastic member

Claims (3)

A vehicle body in which a passenger compartment entrance is formed between the front pillar and the rear pillar, and the entrance and exit is divided back and forth by a center pillar;
A front door that closeably opens and closes between the front pillar and the center pillar,
A rear door that opens and closes between the center pillar and the rear pillar,
A front door beam extending along the front-rear direction in the front door,
A rear door beam extending along the front-rear direction in the rear door,
Has,
The front door beam is provided such that a rear end of the center pillar side is located outside of a front end of the front pillar side in a vehicle width direction,
The rear door beam is provided so that the front door beam is aligned with the height position of the front door beam and the front end on the center pillar side is located outside the rear end on the rear pillar side in the vehicle width direction,
At the rear end of the front door beam and the front end of the rear door beam, a fitting portion that fits each other is formed,
When a structure such as another vehicle body collides against the front door and the rear door from the side, the front door beam and the rear door beam are connected to each other outside the center pillar, and the front pillar and the rear pillar To form an arch shape that protrudes outward in the vehicle width direction between
Side structure of the car body. At least one of the front door beam and the rear door beam protrudes out of the front door or the rear door when the front door and the rear door are deformed by a side impact load, thereby the front door beam and the rear door beam. Are connected to each other,
The side structure of a vehicle body according to claim 1. The front door beam and the rear door beam are provided in a straight line at a height position of a bumper of another vehicle body,
The side structure of a vehicle body according to claim 1 or 2 .

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