JP6619142B2 - Vehicle body structure - Google Patents

Description

  The present invention relates to a vehicle body structure for a vehicle that prevents the center pillar from being largely bent and deformed toward the passenger compartment when an impact force is applied to the center pillar from the outside of the vehicle body due to a side collision with the vehicle. Is.

  Conventionally, there is a vehicle body structure of the vehicle described in Patent Document 1 below. According to this publication, particularly in FIG. 12, the vehicle body structure forms a center pillar that forms a part of the side wall of the vehicle body in the longitudinal direction of the vehicle body and extends in the vertical direction, and a lower surface of the compartment inside the vehicle body. And a floor tunnel that is formed at the center portion of the floor panel in the vehicle body width direction and has a large rigidity with each portion in the vehicle body front-rear direction bulging upward, and the floor on the vehicle body inner side of the center pillar A seat that is supported on the panel by left and right support brackets that are spaced apart in the vehicle body width direction, and a load that transmits the impact force applied to the center pillar from the outside of the vehicle body toward the floor tunnel via the seat A direction changing member.

  Then, an impact force is applied to the center pillar from the outside of the vehicle body due to a side impact on the vehicle, and when the center pillar is bent and deformed toward the passenger compartment due to the impact force, the bent portion of the center pillar is inward An attempt is made to press the sheet with a pressing force toward.

  Here, as described above, the seat is supported on the floor panel by the left and right support brackets that are spaced apart in the vehicle body width direction, and these left and right support brackets are provided horizontally from the vehicle body width direction. The rigidity against external force tends to be low.

  For this reason, as described above, if the seat is pressed by a horizontal pressing force toward the inside of the vehicle body, the left and right support brackets, as shown in FIG. The match box tends to fall easily toward the inside of the vehicle body so that the outer box of the match box deforms in a diamond shape without greatly resisting pressure. If the resistance of the left and right support brackets to the pressing force is small as described above, the center pillar tends to bend and deform toward the passenger compartment side. In this case, the passenger in the passenger compartment is protected. May be insufficient.

  However, as described above, in the conventional technique, a load conversion member that transmits the impact force to the floor tunnel via the seat is provided, and therefore most of the impact force is the seat, And it will be supported by the floor tunnel of large rigidity through a load direction change member. Therefore, the center pillar is prevented from being greatly bent and deformed toward the passenger compartment by the impact force, thereby protecting the passenger in the passenger compartment.

JP 2001-105947 A

  By the way, in the above-described conventional technology, the center pillar is prevented from being greatly bent and deformed toward the passenger compartment due to the impact force at the time of a side collision with the vehicle, but such bending deformation of the center pillar is prevented. Therefore, the load converting member described above is provided separately, and accordingly, the configuration of the vehicle body structure for protecting the passenger in the passenger compartment is considered to be complicated.

  The present invention has been made paying attention to the above-described circumstances. The object of the present invention is that when an impact force is applied to the center pillar from the outside of the vehicle body due to a side collision to the vehicle, the center pillar is It is to prevent the vehicle occupant from being bent or deformed greatly toward the cabin side so that the passenger in the vehicle compartment can be protected more reliably and to be achieved with a simple configuration.

The invention of claim 1 includes a center pillar 11 that constitutes a part of the side wall 5 of the vehicle body 2 in the longitudinal direction of the vehicle body 2 and extends in the vertical direction, a floor panel 7 that forms the lower surface of the compartment 8 inside the vehicle body 2, and In the vehicle body structure of the vehicle, comprising the seat 20 supported by the left and right support brackets 19 and 19 disposed apart from each other in the width direction of the vehicle body 2 on the floor panel 7 inside the vehicle body 2 of the center pillar 11.
A pillar garnish 16 is set on the vehicle interior side of the center pillar 11, and a triangular rib that protrudes outward or inward toward the vehicle body toward the lower side on the inner or outer surface of the pillar garnish located at the lower end of the seat outer side. group 30 is set, the lower end of the rib group 30 is positioned lower than the outer portion the lower end of the seat 20, the impact force applied et al is from the vehicle outer side, by the impact force of at least a lower portion of the center pillar 11 When bent and deformed so as to protrude toward the passenger compartment side, the lower end portion of the rib group 30 positioned below the lower end of the outer portion of the seat 20 in the rib group 30 is bent. The vehicle body structure is characterized in that the lower end of the outer portion is pushed and the seat 20 is pressed with a pressing force P directed obliquely upward inward of the vehicle body.

  In addition, in this section, the reference numerals and drawing numbers appended to the above terms are not intended to limit the technical scope of the present invention to the section “Example” and the contents of drawings described below.

  The effects of the present invention are as follows.

According to the first aspect of the present invention, there is provided a center pillar that constitutes a part of the side wall of the vehicle body in the longitudinal direction of the vehicle body and extends in the vertical direction, a floor panel that forms a lower surface of a passenger compartment inside the vehicle body, In the vehicle body structure of the vehicle comprising the seat supported by the left and right support brackets arranged apart on the floor panel in the vehicle body width direction,
A pillar garnish is set on the vehicle interior side of the center pillar, and on the inner surface or the outer surface of the pillar garnish located at the lower end of the seat outer portion, a group of triangular ribs that protrudes outward or inward toward the vehicle body as it goes downward. is set, the lower end of the rib group is located lower than the outer portion the lower end of the seat, et al impact force from the vehicle body outer side is, at least the lower portion of the center pillar toward the vehicle compartment side by the impact force When bent and deformed so as to protrude, the lower end portion of the rib group positioned below the lower end of the outer portion of the sheet among the rib group pushes the lower end of the outer portion of the sheet. Is pressed with a pressing force directed obliquely upward on the inner side of the vehicle body.

  For this reason, of the vertical component force and the horizontal component force of the pressing force that presses the sheet, the horizontal component force decreases according to the value of the elevation angle of the pressing force directed diagonally upward. The left and right support brackets supported on the floor panel can strongly counter the horizontal component force based on the impact force. Therefore, when an impact force is applied to the center pillar from the outside of the vehicle body due to a side collision with the vehicle, the center pillar is prevented from being greatly bent and deformed toward the passenger compartment side, thereby protecting the passengers in the passenger compartment. You can be more certain.

  Further, prevention of large bending deformation of the center pillar to which the impact force is applied toward the passenger compartment is achieved by devising a related configuration of the bending portion side of the center pillar that is bent and deformed by the impact force and the seat. Therefore, it is possible to avoid providing a separate load direction changing member for supporting most of the impact force described in the prior art on the floor tunnel. Therefore, the passenger protection described above can be achieved with a simple configuration.

FIG. 5 is a diagram illustrating an operation of the first embodiment and corresponding to FIG. 3. 1 is a side cross-sectional front view of a vehicle body, showing Embodiment 1. FIG. Example 1 is shown, and is a partially enlarged view of FIG. FIG. 2 shows a second embodiment and corresponds to FIG.

  In the vehicle body structure of the vehicle according to the present invention, when an impact force is applied to the center pillar from the outside of the vehicle body due to a side collision with the vehicle, the center pillar is not greatly bent and deformed toward the vehicle interior side. In order to achieve the object of ensuring the protection of the passenger of the vehicle more reliably and achieving the protection of the passenger with a simple configuration, the mode for carrying out the present invention is as follows. is there.

  That is, the vehicle body structure includes a center pillar that constitutes a part of the side wall of the vehicle body in the longitudinal direction of the vehicle body and extends in the vertical direction, a floor panel that forms the lower surface of the passenger compartment inside the vehicle body, And a seat supported by left and right support brackets that are spaced apart in the vehicle body width direction.

  When the center pillar is given an impact force from the outside of the vehicle body, the impact force causes the at least lower part of the center pillar to bend and deform so as to protrude toward the passenger compartment side, and the bent portion side causes the seat to move toward the vehicle interior side. It is made to press with the pressing force which goes diagonally upward.

  In order to explain the present invention in more detail, the first embodiment will be described with reference to FIGS.

  2 and 3, reference numeral 1 denotes a vehicle exemplified by an automobile. The vehicle 1 includes a vehicle body 2 and wheels 4 that are suspended from the vehicle body 2 and support the vehicle body 2 on the traveling surface 3. Prepare.

  The vehicle body 2 includes a side wall 5 constituting a side portion thereof, a roof panel 6 that forms an upper surface, and a floor panel 7 that forms a lower surface, and the interior of the vehicle body 2 surrounded by these 5 to 7 is a vehicle compartment 8. The floor panel 7 forms the lower surface of the passenger compartment 8.

  The side wall 5 constitutes a part in the longitudinal direction of the vehicle body 2 and extends in the vertical direction, and constitutes a lower edge of the side wall 5 and extends in the longitudinal direction of the vehicle body 2. A rocker 12 to which a lower end portion of the center pillar 11 is coupled and a side edge portion of the floor panel 7 is coupled is provided. The center pillar 11 and the rocker 12 have outer and inner panels 14 and 15 that face each other in the width direction of the vehicle body 2 and are coupled to each other to have a hollow closed cross-sectional structure. Constitute. The center pillar 11 has a resin pillar garnish 16 that covers the outer plate 14 and the inner panel 14 and 15 and is attached to the inner panel 15 so as to cover these 14 and 15 from the cabin 8 side. ing.

  The vehicle body 2 is formed at the center portion of the floor panel 7 in the width direction of the vehicle body 2, and each portion in the longitudinal direction of the vehicle body 2 bulges upward and has a large rigidity, and the vehicle body of the center pillar 11. 2 on the floor panel 7 on the inner side, the seat 20 supported by left and right support brackets 19, 19 disposed apart in the width direction of the vehicle body 2, and between the floor panel 7 and each support bracket 19. It is provided with a rail 21 that can be moved back and forth only in the front-rear direction of the vehicle body 2 and can be moved back and forth together with the support brackets 19 and can be attached and detached at an arbitrary position.

  The seat 20 is supported by the upper ends of the left and right support brackets 19, 19 so that the occupant can sit toward the front of the vehicle body 2, and the seat cushion 24 extends upward from the rear end side of the seat cushion 24. And a seat back 25 that can be pivoted back and forth around the rear end side of the seat cushion 24 to allow the occupant to back up, and an outer side of the vehicle body 2 of the seat cushion 24 is attached to the side of the seat. And a handle-type rotation operation unit 26 that enables the seat back 25 to be fixed at an arbitrary rotation position.

  A portion of the pillar garnish 16 in the lower portion of the center pillar 11 extends linearly in the vertical direction. On the surface of the pillar garnish 16 on the inner panel 15 side, a plurality of (four) ribs 30 are integrally projected in the vertical direction toward the outside of the vehicle body 2. Each of the ribs 30 protrudes larger toward the outer side of the vehicle body 2 as it goes downward. If each of the ribs 30 is viewed as a whole as a group of ribs 30, the group of ribs 30 is a vertical side connecting the ends of the ribs 30 on the pillar garnish 16 side, and a lower edge of the rib 30 group. It has a right triangle shape having a bottom side extending from the vertical side toward the outer side of the vehicle body 2. In this case, the lower end of the group of ribs 30 is positioned below the outer lower end of the rotation operation unit 26, which is the outer lower end of the seat 20 on the outer side of the vehicle body 2.

  In FIG. 1, when the center pillar 11 is given an impact force F from the outside of the vehicle body 2 due to a side collision with the vehicle 1, at least the lower part of the center pillar 11 is directed toward the vehicle compartment 8 by the impact force F. In addition, the bent portion 31 presses the seat 20 with a pressing force P directed obliquely upward on the inner side of the vehicle body 2.

  Specifically, the center pillar 11 is given an impact force F from the outside of the vehicle body 2 due to a side collision with the vehicle 1, and the outer and inner panels 14 and 15 at the bottom of the center pillar 11 are inward of the vehicle body 2. The lower end of the rib 30 group positioned below the lower end of the outer side of the seat 20 (the lower end of the outer side of the rotation operation unit 26) of the rib 30 group is bent as described above. The inner pillar 15 of the center pillar 11 that is bent in the direction is quickly pushed toward the inside of the vehicle body 2. At this time, the lower part of the pillar garnish 16 is pushed toward the inner side of the vehicle body 2 by the rib 30 group.

  For this reason, of the bent portion side 31 of the center pillar 11 bent by the impact force F, the surface of the portion of the pillar garnish 16 pushed by the rib 30 group on the side of the passenger compartment 8 faces outward of the vehicle body 2. Accordingly, the inclined surface is directed upward, and the inclined surface pushes the lower end of the outer portion of the seat 20. Therefore, the bent portion side 31 of the center pillar 11 presses the seat 20 with a pressing force P directed obliquely upward on the inner side of the vehicle body 2.

  Here, as described above, the seat 20 is supported on the floor panel 7 by the left and right support brackets 19 and 19 that are spaced apart in the width direction of the vehicle body 2, and these left and right support brackets 19 and 19. Tends to be low in rigidity against a horizontal external force applied from the width direction of the vehicle body 2.

  For this reason, if the seat 20 is pressed by a horizontal external force toward the inside of the vehicle body 2, the left and right support brackets 19, 19 are largely affected by the horizontal external force, as indicated by a one-dot chain line in FIG. 2. The match box tends to fall easily toward the inside of the vehicle body 2 so that the outer box of the match box is deformed in a rhombus shape without resistance. When the resistance of the left and right support brackets 19 and 19 with respect to the pressing force P is thus small, the center pillar 11 tends to bend and deform greatly toward the passenger compartment 8, and in this case, This may result in insufficient protection of passengers in the passenger compartment 8.

  However, as described above, when the center pillar 11 is given an impact force F from the outside of the vehicle body 2, the impact force F causes the at least lower part of the center pillar 11 to bend and deform so as to protrude toward the compartment 8 side. The bent portion side 31 presses the seat 20 with a pressing force P directed obliquely upward on the inner side of the vehicle body 2.

  For this reason, out of the vertical component force P1 and the horizontal component force P2 of the pressing force P that presses the seat 20, the vertical component force P1 is stronger by the floor panel 7 via the seat 20, the support bracket 19 and the rail 21. On the other hand, the horizontal component force P2 is reduced in accordance with the value of the elevation angle θ of the pressing force P directed obliquely upward, so that the left supporting the seat 20 on the floor panel 7, The right support brackets 19, 19 are able to strongly counter the horizontal component force P <b> 2 based on the impact force F, with the above-described rhombus deformation suppressed. Therefore, when an impact force F is applied to the center pillar 11 from the outside of the vehicle body 2 due to a side collision to the vehicle 1, the center pillar 11 is prevented from being greatly bent and deformed toward the vehicle compartment 8 side. The passengers in the room 8 can be protected more reliably.

  Further, the large bending deformation of the center pillar 11 to the side of the passenger compartment 8 to which the impact force F is applied is related to the seat 20 and the bent portion side 31 of the center pillar 11 that is bent and deformed by the impact force F. This can be achieved by the device of the configuration, and it is possible to avoid providing a separate load direction changing member for supporting most of the impact force F described in the prior art on the floor tunnel 18. Therefore, the passenger protection described above can be achieved with a simple configuration.

  FIG. 4 below shows a second embodiment. The second embodiment is common in many respects to the configuration and operational effects of the first embodiment. Therefore, regarding these common items, common reference numerals are attached to the drawings, and redundant description thereof is omitted, and different points are mainly described. In addition, the configurations of the respective parts in these embodiments may be variously combined in light of the object and operational effects of the present invention.

  In order to explain the present invention in more detail, Example 2 will be described with reference to FIG.

  In FIG. 4, a plurality of (four) ribs 30 project inward from the vehicle body 2 in the vertical direction on the surface of the pillar garnish 16 at the lower portion of the center pillar 11 on the side of the passenger compartment 8. Each said rib 30 protrudes more largely toward the inner side of the vehicle body 2 as it goes downward. When the ribs 30 are viewed as a group of the ribs 30 as a whole, the bottom side has a right triangle shape extending from the pillar garnish 16 side of the center pillar 11 toward the inside of the vehicle body 2.

  When the center pillar 11 is given an impact force F from the outside of the vehicle body 2 due to a side collision with the vehicle 1, the ribs 30 are formed inwardly of the vehicle body 2 by bending of the lower portion of the center pillar 11 due to the impact force F. However, at this time, the lower end side of the group of ribs 30 is quickly pushed and pressed toward the lower end of the outer side of the sheet 20.

  Therefore, of the bent portion side 31 of the center pillar 11, the surface of the group of ribs 30 on the vehicle compartment 8 side becomes an inclined surface that goes upward as it goes outward of the vehicle body 2, and this inclined surface is the outer side of the seat 20. Push the bottom of the part. Therefore, the bent portion side 31 of the center pillar 11 presses the seat 20 with a pressing force P directed obliquely upward on the inner side of the vehicle body 2.

  The ribs 30 may be formed on the front and back surfaces of the pillar garnish 16 or may be attached separately. Moreover, the said rib 30 group is good also as a block which formed each rib 30 integrally. Further, a weak portion such as a narrow groove is formed in each part of the pillar garnish 16 near the upper and lower ends of the ribs 30 group, and the bending of the lower part of the center pillar 11 due to the impact force F is promoted. May be.

  Further, if the impact force F at the time of a side impact on the vehicle 1 is large, the seat 20 is moved inward of the vehicle body 2 together with the left and right support brackets 19 and 19 in accordance with the deformation of the vehicle body 2 due to the impact force F. Even if the left and right support brackets 19 and 19 are restrained from rhombus deformation as described above, the left and right support brackets 19 and 19 and the seat 20 move substantially in parallel toward the inside of the vehicle body 2. Further, it can be brought into contact with a predetermined portion of the floor tunnel 18 and can be brought into contact with a predetermined portion of another seat (not shown) or the left and right support brackets via the floor tunnel 18. Therefore, by suppressing the rhombus deformation of the left and right support brackets 19 and 19 as described above, the impact force F can be effectively counteracted, and the bending deformation of the center pillar 11 toward the passenger compartment 8 can be reduced. It can be prevented more effectively.

DESCRIPTION OF SYMBOLS 1 Vehicle 2 Car body 5 Side wall 7 Floor panel 8 Car compartment 11 Center pillar 12 Rocker 14 Outer panel 15 Inner panel 16 Pillar garnish 18 Floor tunnel 19 Support bracket 20 Seat 21 Rail 30 Rib 31 Bending part side F Impact force P Pressing force P1 Vertical part Force P2 Horizontal component θ Elevation angle

Claims (1)

A center pillar that forms a part of the side wall of the vehicle body in the longitudinal direction of the vehicle body and extends in the vertical direction, a floor panel that forms a lower surface of a passenger compartment inside the vehicle body, and a vehicle body on the floor panel on the vehicle body inner side of the center pillar In a vehicle body structure of a vehicle provided with a seat supported by left and right support brackets arranged apart in the width direction,
A pillar garnish is set on the vehicle interior side of the center pillar, and on the inner or outer surface of the pillar garnish located at the lower end of the outer side of the seat, there is a group of triangular ribs that protrudes outward or inward toward the vehicle body toward the lower side. is set, the lower end of the rib group is located lower than the outer portion the lower end of the seat, et al impact force from the vehicle body outer side is, at least the lower portion of the center pillar toward the vehicle compartment side by the impact force When bent and deformed so as to protrude, the lower end portion of the rib group positioned below the lower end of the outer portion of the sheet among the rib group pushes the lower end of the outer portion of the sheet. A vehicle body structure for a vehicle, wherein the vehicle body is pressed with a pressing force directed diagonally upward toward the inside of the vehicle body.

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