WO2011048675A1 - 車体構造 - Google Patents
車体構造 Download PDFInfo
- Publication number
- WO2011048675A1 WO2011048675A1 PCT/JP2009/068130 JP2009068130W WO2011048675A1 WO 2011048675 A1 WO2011048675 A1 WO 2011048675A1 JP 2009068130 W JP2009068130 W JP 2009068130W WO 2011048675 A1 WO2011048675 A1 WO 2011048675A1
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- WO
- WIPO (PCT)
- Prior art keywords
- load
- vehicle
- rear side
- body structure
- vehicle body
- Prior art date
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D21/00—Understructures, i.e. chassis frame on which a vehicle body may be mounted
- B62D21/15—Understructures, i.e. chassis frame on which a vehicle body may be mounted having impact absorbing means, e.g. a frame designed to permanently or temporarily change shape or dimension upon impact with another body
- B62D21/152—Front or rear frames
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R19/00—Wheel guards; Radiator guards, e.g. grilles; Obstruction removers; Fittings damping bouncing force in collisions
- B60R19/02—Bumpers, i.e. impact receiving or absorbing members for protecting vehicles or fending off blows from other vehicles or objects
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R19/00—Wheel guards; Radiator guards, e.g. grilles; Obstruction removers; Fittings damping bouncing force in collisions
- B60R19/02—Bumpers, i.e. impact receiving or absorbing members for protecting vehicles or fending off blows from other vehicles or objects
- B60R2019/026—Buffers, i.e. bumpers of limited extent
Definitions
- the present invention relates to a vehicle body structure on the vehicle rear side.
- Patent Document 1 a structure in which a portion that is easily bent is provided between a side member and a crash box and a cross member is provided on the lower surface of the crash box is known (for example, Patent Document 1).
- the crash box bends downward. The front end of the crash box cushions other vehicles. As a result, the load is distributed to the side members via the crash box.
- the crash box bends so that a load can be received at the front end of the crash box.
- the load transmission efficiency to the side member may be reduced.
- the vehicle is rear-impacted by another vehicle having a vehicle height different from that of the host vehicle, it has been required to suppress the deformation of the luggage compartment caused by the bumper of the other vehicle. From the above, it has been required to improve the collision performance at the time of rear collision.
- the present invention has been made to solve such a problem, and an object thereof is to provide a vehicle body structure capable of improving the collision performance at the time of a rear collision.
- a vehicle body structure includes a first shock absorbing portion provided at a rear end of a rear side member of a vehicle, and a second shock absorbing portion provided at a rear side of the vehicle.
- the vehicle is arranged at a position different from that of the first shock absorber in the vehicle vertical direction.
- the bumper reinforcement BP on the front side of the other vehicle contacts the bumper reinforcement on the rear side of the host vehicle. May not.
- the second impact absorbing portion is disposed at a position different from the first impact absorbing portion in the vehicle longitudinal direction. Therefore, the second impact absorbing portion can absorb the load from the bumper reinforcement of the other vehicle. By absorbing the load at the time of the rear impact by the second impact absorbing portion, it is possible to suppress the deformation amount of the luggage compartment at the rear portion of the vehicle body. As described above, the collision performance at the time of a rear collision can be improved.
- the rear side member is connected to a load transmitting member that transmits a load acting on the second shock absorbing portion to the rear side member, and the load transmitting member is connected to the second shock absorbing portion.
- the second shock absorber and the front-rear direction of the vehicle are disposed opposite to each other in front of the vehicle.
- the load transmission member receives a collision load from another vehicle via the second shock absorbing portion.
- the collision load acts toward the front of the vehicle.
- the collision load is transmitted to the rear side member by the load transmitting member. Therefore, the deformation amount of the vehicle body constituent member toward the cargo compartment can be suppressed.
- the load transmission member is opposed to the second shock absorbing part.
- the load transmission member is disposed at a position different from the first crash box 6 in the vehicle vertical direction, like the second shock absorbing portion. That is, the load transmission member 8 is disposed at a position different from the rear side member 2 in the vehicle vertical direction. Accordingly, when a collision load acts on the load transmission member 8, a moment acts on the rear side member. Due to the moment, the rear side member is deformed in the direction in which the load transmitting member is provided. When the rear side member is deformed, the first shock absorbing portion, the rear side member, and the bumper reinforcement cushion the bumper reinforcement of the other vehicle. Due to the buffer, a load directed in the vehicle vertical direction acts on the rear side member. Thus, a part of the collision load acting on the front side of the vehicle is converted into a load directed in the vertical direction of the vehicle. As described above, the deformation amount of the luggage compartment at the rear of the vehicle body can be further suppressed.
- the load transmitting member is disposed in front of the vehicle with respect to the first impact absorbing portion.
- the rear side member is deformed, and the first shock absorbing portion and the bumper reinforcement of the other vehicle are buffered.
- the load transmission member includes a load receiving portion that receives a load from the second shock absorbing portion, and a transmission portion that transmits the load received by the load receiving portion to the rear side member.
- the load transmitting member can receive a collision load at a position where a moment acts on the rear side member by the load receiving portion. Further, the load transmission unit can transmit the collision load to the rear side member so that the rear side member can be deformed upward by the transmission unit.
- the load transmission member is provided in the cargo compartment of the vehicle and connected to the rear side member via the cargo compartment floor.
- the amount of deformation of the luggage compartment at the rear of the vehicle body can be suppressed with a simple configuration in which the load transmission member is simply provided in the cargo compartment of the vehicle. Since it has a simple configuration, the collision performance of a small car can be improved.
- the load receiving portion is formed by bending a plate material, and the transmission portion is formed by a tubular member.
- the configuration of the load transmission member becomes complicated and large. Therefore, when such a load transmission member is applied to a small vehicle, there is a possibility that the space of the luggage compartment becomes narrow.
- the load receiving portion is configured by bending a plate material, and can receive a collision load with certainty while having a simple configuration.
- the transmission unit is configured by a tubular member, and can transmit the load to the rear side member with certainty while having a simple configuration.
- the load transmission member since the load transmission member has a simple configuration, it can be installed in a small space of a small vehicle.
- the load receiving portion has an opposing wall portion facing the second shock absorbing portion, and a pair of side wall portions extending from the opposing wall portion to the front of the vehicle, and the load receiving portion is It is preferable that the reinforcing member is reinforced by a rod-like member connected to the pair of side wall portions. Therefore, when the opposing wall receives a collision load, the out-of-plane deformation of the side wall can be suppressed. Thereby, it can suppress that the load transmission performance of a load transmission member falls.
- FIG. 1 is a perspective view of a vehicle body structure according to an embodiment of the present invention.
- FIG. 2 is an enlarged perspective view of the load transmitting member of the vehicle body structure according to the embodiment of the present invention.
- FIG. 3 is a top view of the load transmitting member of the vehicle body structure according to the embodiment of the present invention.
- FIG. 4 is a side view showing a state immediately before another vehicle rear-ends against the vehicle body structure according to the embodiment of the present invention.
- FIG. 5 is a schematic diagram illustrating moments acting on the rear side member.
- FIG. 1 is a perspective view of a vehicle body structure 1 according to an embodiment of the present invention.
- the vehicle body structure 1 is a skeleton structure and a reinforcement structure on the rear side of the vehicle.
- the vehicle body structure 1 has a function of absorbing a load when a load is applied from the rear of the vehicle.
- the vehicle body structure 1 according to the present embodiment has a function of effectively absorbing a load when a load is later received by a vehicle having a vehicle height different from that of the host vehicle.
- the vehicle body structure 1 mainly includes a rear side member 2, a bumper reinforcement 3, a floor panel 4, a first crash box (first impact absorbing portion) 6, a second crash box (second impact). Absorbing part) 7 and load transmitting member 8 are provided.
- the rear side member 2 is a pair of skeleton members extending in the vehicle front-rear direction.
- the rear side members 2 are respectively arranged on both sides in the vehicle width direction.
- the rear side member 2 has a function of transmitting a load when receiving a load from the rear due to a rear collision from another vehicle.
- the rear end 2 a of the rear side member 2 is connected to the bumper reinforcement 3 via the first crash box 6.
- the front end of the rear side member 2 is supported by a strong skeleton member such as a rocker or a cross member (not shown).
- the bumper reinforcement 3 is a skeleton member extending in the vehicle width direction at the rear end of the vehicle.
- the bumper reinforcement 3 is supported by a pair of rear side members 2 at both ends in the vehicle width direction.
- the bumper reinforcement 3 receives a load when coming into contact with the bumper reinforcement on the front end side of the other vehicle at the time of rear-end collision.
- the bumper reinforcement 3 transmits the received load to the rear side member 2.
- the floor panel 4 is a plate-like member that covers between the pair of rear side members 2.
- the floor panel 4 is fixed to the upper surface of the rear side member 2 at both edges in the vehicle width direction.
- the floor panel 4 has a function of dividing a skeleton structure below the vehicle and the cabin space or cargo space of the vehicle. In the present embodiment, the region above the floor panel 4 is a luggage space.
- the first crash box 6 is an impact absorbing member provided between the rear end 2 a of the rear side member 2 and the bumper reinforcement 3.
- the first crash box 6 has a function of absorbing an impact by being crushed when the bumper reinforcement 3 receives a load from another vehicle.
- the second crash box 7 is an impact absorbing member disposed at a position different from the first crash box 6 in the vehicle vertical direction.
- the second crash box is disposed above the first crash box 6.
- the second crash box 7 has a function of absorbing an impact when it collides with another vehicle having a vehicle height higher than that of the host vehicle. That is, when the bumper reinforcement BP on the front side of the other vehicle having a high vehicle height is higher than the bumper reinforcement 3 on the rear side of the own vehicle, the bumper reinforcement BP of the other vehicle is There is no contact with the rear surface of the bumper reinforcement 3. However, the second crash box 7 can contact the bumper reinforcement BP of the other vehicle and absorb the load (see FIG. 4).
- the second crash box 7 only needs to be disposed above the first crash box 6, and there is no particular limitation on where to fix the second crash box 7.
- the second crash box 7 is fixed to a panel 9 such as a lower back (see FIG. 4). In FIG. 1, the panel 9 is omitted.
- the front end 7 a of the second crash box 7 projects rearward from the front end 6 a of the first crash box 6.
- the load transmitting member 8 is provided on the upper surface on the rear end 2a side of the rear side member 2 via the floor panel 4.
- the load transmission member 8 is disposed in front of the vehicle with respect to the second crash box 7.
- the load transmission member 8 faces the second crash box 7.
- the load transmission member 8 has a function of transmitting a load acting on the second crash box 7 to the rear side member 2.
- the load transmission member 8 is provided in the cargo compartment of the vehicle. Further, the load transmission member 8 is disposed in front of the vehicle with respect to the first crash box 6.
- the load transmission member 8 includes a load receiving part 11 and a transmission part 10.
- the load receiver 11 has a function of receiving a load from the crash box 7.
- the transmission unit 10 has a function of transmitting the load received by the load receiving unit 11 to the rear side member 2.
- FIG. 2 is an enlarged perspective view of the load transmitting member 8.
- FIG. 3 is a view of the load transmitting member 8 as viewed from above.
- the load receiving part 11 is comprised by bending a board
- the load receiving part 11 includes an opposing wall part 12, a side wall part 13, a side wall part 14, and a bottom wall part 15.
- the inside of the load receiving portion 11 is hollow, and the load receiving portion 11 opens upward and forward.
- the facing wall portion 12 constitutes the rear wall of the load receiving portion 11 and faces the second crash box 7.
- the side wall 13 spreads forward from the edge of the opposite wall 12 on the inner side in the vehicle width direction.
- the side wall portion 14 extends forward from the edge of the opposite wall portion 12 on the outer side in the vehicle width direction.
- the bottom wall portion 15 connects lower ends of the opposing wall portion 12 and the side wall portions 13 and 14.
- the bottom wall portion 15 is in contact with the upper surface of the floor panel 4 and is connected to the rear side member 2 through the floor panel
- the opposing wall portion 12 of the load receiving portion 11 has a lower portion 12a, an inclined portion 12b, and an upper portion 12c.
- the lower portion 12a extends upward from the upper surface in the vicinity of the rear end 2a of the rear side member 2.
- the inclined portion 12b extends upward from the upper end of the lower portion 12a so as to be inclined rearward of the vehicle.
- the upper part 12c extends upward from the upper end of the inclined part 12b.
- the opposing wall part 12 becomes the structure which the upper part 12c protruded toward the vehicle back compared with the lower part 12a.
- the opposing wall portion 12 is opposed to the second crash box 7 mainly in the upper portion 12c.
- the load receiving portion 11 is configured such that the position where the load is received from the other vehicle approaches the rear of the vehicle rather than the position where the load is transmitted to the rear side member 2. At the time of rear collision, the load from the second crash box 7 is received by the protruding upper portion 12c as compared with the lower portion 12a. Therefore, the load receiving part 11 can transmit a load to the rear side member 2 early at the time of a rear collision.
- the side wall portion 13 of the load receiving portion 11 has a substantially rectangular shape.
- An edge portion of the side wall portion 13 on the vehicle rear side has a step shape so as to correspond to the step shape of the opposing wall portion 12.
- the side wall portion 14 of the load receiving portion 11 has a shape obtained by adding an enlarged portion 14 a that is further enlarged in front of the vehicle to the shape of the side wall portion 13. That is, when viewed from the vehicle width direction, the side wall portion 14 has a portion that does not overlap with the portion that overlaps the side wall portion 13, and the portion that does not overlap is the enlarged portion 14a (see FIG. 4).
- a part of the edge portion 14b on the vehicle front side of the enlarged portion 14a is inclined forward from the upper side to the lower side of the vehicle.
- the width of the bottom wall portion 15 in the vehicle front-rear direction matches the width of the vehicle front-rear direction on the lower end side of the side wall portion 14.
- the bottom wall portion 15 is connected to the rear side member 2 by bolts 19 and 20 arranged in the vehicle front-rear direction.
- the load receiving portion 11 is composed of a first bent plate material 17 obtained by bending a plate material, and a second bent plate material 18 obtained by bending the plate material.
- plate material 17 is comprised by bending the both ends side of one board
- the first bent plate member 17 has a base portion 17 a that constitutes the bottom wall portion 15, a bent portion 17 b that constitutes the side wall portion 13, and a bent portion 17 c that constitutes the side wall portion 14.
- the second bent plate member 18 has a base portion 18 a that constitutes the opposing wall portion 12, a bent portion 18 b that constitutes the side wall portion 13, and a bent portion 18 c that constitutes the side wall portion 14.
- the bent portion 18b of the second bent plate member 18 is connected to the vehicle rear edge of the bent portion 17b of the first bent plate member 17 by welding or screwing
- the bent portion 18c of the second bent plate member 18 is
- the bent plate member 17 is connected to the rear edge of the bent portion 17c of the bent plate 17 by welding or screwing. Therefore, the side wall portion 13 of the load receiving portion 11 is constituted by the bent portions 17b and 18b, and the side wall portion 14 is constituted by the bent portions 17c and 18c.
- the transmission unit 10 is constituted by a pipe (tubular member).
- the transmission unit 10 extends in the vehicle front-rear direction along the upper surface of the rear side member 2.
- the vehicle rear end of the transmission portion 10 is fixed to the lower portion 12a of the opposing wall portion 12 by welding or the like.
- the vehicle front end 10a of the transmission unit 10 is fixed to the plate 21 by welding or the like.
- the plate 21 is connected to the upper surface of the rear side member 2 via the floor panel 4, and is fixed to the rear side member 2 by screwing.
- the transmission unit 10 also has a function of reinforcing the rear side member 2 against a moment generated when a load acts on the load transmission member 8.
- the transmission part 10 is provided with respect to the part which needs reinforcement of the rear side member 2 with respect to a moment. A detailed description of how far the end portion 10a of the transmission unit 10 is extended will be described together with the description of the operation and effect of the vehicle body structure 1 according to the present embodiment described later.
- the load transmission member 8 further includes a reinforcing member for suppressing a decrease in load transmission performance.
- the load transmission member 8 includes rod-shaped members 22 and 23 and a bent plate material 24.
- the rod-shaped members 22 and 23 are connected to the side wall portion 13 and the side wall portion 14 of the load receiving portion 11.
- the rod-shaped members 22 and 23 have a function of preventing out-of-plane buckling of the side wall portion 13 and the side wall portion 14 when a load is applied. Thereby, the rod-shaped members 22 and 23 can suppress a decrease in load transmission performance of the load transmission member 8.
- the rod-shaped members 22 and 23 are disposed between the bolt 19 and the bolt 20 in the vehicle front-rear direction.
- the rod-shaped member 22 is disposed above the rod-shaped member 23.
- the rod-shaped member 23 does not overlap the bolts 19 and 20 when viewed from above (particularly, see FIG. 3). Therefore, when fixing the load receiving part 11 to the rear side member 2, the operation
- the bent plate member 24 is bent in an L shape in cross section and is attached to the enlarged portion 14 a of the side wall portion 14.
- the bent plate member 24 has a connecting portion 25 and a support portion 26.
- the connecting portion 25 is connected to the inner surface of the enlarged portion 14 a of the side wall portion 14.
- the support part 26 can support the load receiving part 11 by contacting the transmission part 10 at the lower end 26a when a load is applied.
- the bent plate member 24 is inclined along the inclined edge portion 14b of the enlarged portion 14a. That is, the bent plate member 24 extends from the upper side to the lower side so as to incline forward of the vehicle.
- a cutout portion 26 c is formed in a part of the vehicle inner side at the upper end portion of the support portion 26 of the bent plate member 24.
- the notch 26c is formed so that the bolt 20 is exposed when viewed from above (particularly, see FIG. 3). Therefore, when fixing the load receiving part 11 to the rear side member 2, the operation
- an extension portion 26b is formed downward.
- the transmission part 10 is configured to be surrounded by the lower end 26 a, the extension part 26 b, and the side wall part 14.
- the bent plate member 24 can reliably contact the transmission unit 10 without being displaced.
- the bending board material 24 can support the load receiving part 11 by contacting with the transmission part 10, can suppress a deformation
- FIG. 4 is a side view showing a state immediately before another vehicle rear-ends against the vehicle body structure 1 according to the embodiment of the present invention.
- FIG. 5 is a schematic diagram illustrating moments acting on the rear side member 2.
- the vehicle body structure 1 includes a first crash box 6 and a second crash box 7 provided at the rear end 2a of the rear side member 2. Further, the second crash box 7 is disposed at a position different from the first crash box 6 in the vehicle vertical direction.
- the bumper reinforcement BP on the front side of the other vehicle does not contact the bumper reinforcement 3 on the rear side of the own vehicle.
- the second crash box 7 arranged at a different position from the first crash box 6 can absorb the load from the bumper reinforcement BP of the other vehicle. By absorbing the load at the time of the rear collision by the second crash box 7, the deformation amount of the luggage compartment at the rear of the vehicle body can be suppressed. As described above, the collision performance at the time of a rear collision can be improved.
- the vehicle body structure 1 includes a load transmission member 8 that transmits a load acting on the second crash box 7 to the rear side member 2.
- the load transmission member 8 is disposed in front of the vehicle with respect to the second crash box 7 and is disposed to face the second crash box 7.
- the load receiving portion 11 of the load transmitting member 8 receives a collision load CF from another vehicle via the second crash box 7.
- the collision load CF acts toward the front of the vehicle.
- the collision load CF is transmitted to the rear side member 2 by the load transmission member 8. Therefore, the deformation amount of the vehicle body constituent member toward the cargo compartment can be suppressed.
- the load transmission member 8 faces the second crash box 7.
- the load transmitting member 8 is arranged at a position different from the first crash box 6 in the vehicle vertical direction, like the second crash box 7. That is, the load transmission member 8 is disposed at a position different from the rear side member 2 in the vehicle vertical direction. Therefore, a moment acts on the rear side member 2 by the collision load CF acting on the load transmitting member 8. Due to the moment, the rear side member 2 is deformed upward, which is the direction in which the load transmitting member 8 is provided, as indicated by TD in the figure. When the rear side member 2 is deformed upward, the upper surface of the first crash box 6, the upper surface of the rear end portion of the rear side member 2, or the upper surface of the bumper reinforcement 3 is buffered with the bumper reinforcement BP of the other vehicle. .
- the vertical load PF acts on the rear side member 2 by the buffering.
- the vertical load PF acts downward.
- a part of the collision load CF acting on the front side of the vehicle is converted into the vertical load PF.
- the deformation amount of the luggage compartment at the rear of the vehicle body can be further suppressed.
- the load transmission member 8 is disposed in front of the vehicle with respect to the first crash box 6.
- the rear side member 2 is deformed upward, and the first crash box 6 and the bumper reinforcement BP of the other vehicle are buffered. Thereby, it is possible to reliably generate the vertical load PF that goes downward.
- the load transmission member 8 includes a load receiving portion 11 that receives the collision load CF and a transmission portion 10 that transmits the load received by the load receiving portion 11 to the rear side member 2. is doing.
- the load transmitting member 8 can receive the collision load CF at a position where a moment acts on the rear side member 2 by the load receiving portion 11. Further, the load transmission member 8 can transmit the collision load CF to the rear side member 2 by the transmission unit 10 so that the rear side member 2 can be deformed upward.
- the load transmitting member 8 is provided in the cargo compartment of the vehicle and is connected to the rear side member 2 via the floor panel 4.
- the amount of deformation of the luggage compartment at the rear of the vehicle body can be suppressed with a simple configuration in which the load transmission member 8 is simply provided in the cargo compartment of the vehicle. Since it has a simple configuration, the collision performance of a small car can be improved.
- the load receiving portion 11 is configured by bending a plate material
- the transmission portion 10 is configured by a tubular member such as a pipe.
- the load receiving part 11 is comprised by bending a board
- the transmission part 10 is comprised by the tubular member, and can transmit a load to the rear side member 2 reliably, although it is a simple structure.
- the load transmission member 8 since the load transmission member 8 has a simple configuration, it can be installed in a narrow space of a small vehicle.
- the load receiving portion 11 is reinforced by rod-like members 22 and 23 connected to the side wall portions 13 and 14. Therefore, when the opposing wall part 12 receives the collision load CF, the out-of-plane deformation of the side wall parts 13 and 14 can be suppressed. Thereby, it can suppress that the load transmission performance of the load transmission member 8 falls.
- FIG. 5 is a schematic diagram illustrating moments acting on the rear side member 2.
- the upper side of the drawing shows the front of the vehicle
- the lower side of the drawing shows the rear of the vehicle.
- the rear side member 2, the first crash box 6, and the bumper reinforcement 3 are indicated by a single solid line L ⁇ b> 1 extending in the front-rear direction.
- the opposing wall portion 12 of the load transmitting member 8 is indicated by a single solid line L2 extending in the vertical direction, assuming that it is a position that receives a collision load CF from another vehicle.
- the collision load CF is applied to the schematic model, and the vertical load PF is applied to the rear side member 2 and the like when the rear side member 2 is deformed by the action of the collision load CF.
- the moments that occur are shown.
- the vertical load PF acts while the rear side member 2 is kept horizontal.
- the rear side member 2 is modeled as a cantilever beam that is fixedly supported at a fixed position with a rocker or side member (not shown) in front of the vehicle.
- a moment diagram M1 and a moment diagram M2 shown in FIG. 5 show moments generated by the collision load CF acting on the load transmitting member 8, that is, the solid line L2.
- the moments constituting the moment diagram M1 and the moment diagram M2 are indicated by solid lines.
- the moment diagram M3 shows the moment generated by the vertical load PF acting on the bumper reinforcement 3 or the first crash box 6, that is, the solid line L1.
- Each moment constituting the moment diagram M3 is indicated by a two-dot chain line.
- the collision load CF acts in the same direction as the direction in which the rear side member 2 extends. Therefore, as shown in the moment diagram M2, the moment acting on the rear side member 2 by the collision load CF is constant.
- the vertical load PF acts substantially perpendicular to the direction in which the rear side member 2 extends. Therefore, as shown in the moment diagram M3, the moment acting on the rear side member 2 due to the vertical load PF increases as the vehicle moves forward. The moment due to the vertical load PF is generated in the opposite direction to the moment due to the collision load CF. Therefore, the mutual moments cancel each other.
- the moment acting on the rear side member 2 is a moment obtained by subtracting the moment (indicated by the moment diagram M3) due to the vertical load PF from the moment due to the collision load CF (indicated by the moment diagram M2).
- the subtracted moment is indicated by a region DM with dots in the figure.
- the moment due to the collision load CF is considerably larger than the moment due to the vertical load PF.
- the moment due to the collision load CF is shown small.
- the one-point difference line FL indicates the proof strength against the moment of the rear side member 2.
- the moment obtained by subtracting the moment due to the vertical load PF from the moment due to the collision load CF is greater than the proof stress of the rear side member 2 in the region behind the vehicle, and in the region ahead of the vehicle relative to P1. It becomes smaller than the proof stress of the rear side member 2. Therefore, it is preferable to extend the transmission part 10 to the position of the vertical line L3 intersecting with P1. Thereby, the transmission part 10 can reinforce the area
- the transmission unit 10 can prevent the rear side member 2 from being deformed at an unexpected position on the rear end side when the collision load CF is applied. Note that the transmission unit 10 may extend further forward of the vehicle than the position of the vertical line L3.
- the present invention is not limited to the above-described embodiment.
- the second crash box 7 and the load transmission member 8 may be provided on the lower surface side of the rear side member 2.
- the load receiving portion 11 is configured by a plate-shaped member, and the transmission portion 10 is configured by a pipe.
- the load transmission member 8 may be configured by a single bulkhead or the like having a function of receiving a load and a function of transmitting a load.
- the load receiving part 11 was comprised with the 1st bending board material 17 and the 2nd bending board material 18, you may comprise with one bending board material. Further, the reinforcing members such as the rod-shaped members 22 and 23 and the bent plate member 24 may not be provided.
- the present invention can be used when absorbing a load acting on a vehicle.
- SYMBOLS 1 Car body structure, 2 ... Rear side member, 4 ... Floor panel, 6 ... 1st crash box (1st shock absorption part), 7 ... 2nd crash box (2nd shock absorption part), 8 ... Shock absorption member, 10 ... transmission part, 11 ... impact receiving part, 12 ... opposing wall part, 13, 14 ... side wall part.
Abstract
Description
Claims (7)
- 車両のリアサイドメンバの後端に設けられた第一衝撃吸収部と、
前記車両の後側に設けられた第二衝撃吸収部と、を備え、
前記第二衝撃吸収部は、車両上下方向において、前記第一衝撃吸収部と異なる位置に配置されていることを特徴とする車体構造。 - 前記リアサイドメンバには、当該第二衝撃吸収部に作用した荷重を前記リアサイドメンバに伝達する荷重伝達部材が接続されており、
前記荷重伝達部材は、前記第二衝撃吸収部よりも車両前方に配置されると共に、前記第二衝撃吸収部と車両前後方向に対向して配置されていることを特徴とする請求項1記載の車体構造。 - 前記荷重伝達部材は、前記第一衝撃吸収部よりも車両前方に配置されていることを特徴とする請求項2記載の車体構造。
- 前記荷重伝達部材は、
前記第二衝撃吸収部からの荷重を受ける荷重受部と、
前記荷重受部で受けた荷重を前記リアサイドメンバへ伝達する伝達部と、を有することを特徴とする請求項2又は3項記載の車体構造。 - 前記荷重伝達部材は、車両の荷室内に設けられ、フロアパネルを介して前記リアサイドメンバに接続されていることを特徴とする請求項2~4のいずれか一項記載の車体構造。
- 前記荷重受部は、板材を屈曲することによって構成され、
前記伝達部は、管状部材によって構成されていることを特徴とする請求項4記載の車体構造。 - 前記荷重受部は、前記第二衝撃吸収部と対向する対向壁部と、前記対向壁部から車両前方に延びる一対の側壁部と、を有し、
前記荷重受部は、一対の前記側壁部同士に接続される棒状部材によって、補強されていることを特徴とする請求項6記載の車体構造。
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US13/497,396 US8915537B2 (en) | 2009-10-21 | 2009-10-21 | Vehicle body structure |
EP09850573.8A EP2492151A4 (en) | 2009-10-21 | 2009-10-21 | BODYWORK OF VEHICLE BODY |
JP2011537056A JP5218666B2 (ja) | 2009-10-21 | 2009-10-21 | 車体構造 |
CN200980162058.3A CN102574492B (zh) | 2009-10-21 | 2009-10-21 | 车体结构 |
PCT/JP2009/068130 WO2011048675A1 (ja) | 2009-10-21 | 2009-10-21 | 車体構造 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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PCT/JP2009/068130 WO2011048675A1 (ja) | 2009-10-21 | 2009-10-21 | 車体構造 |
Publications (1)
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WO2011048675A1 true WO2011048675A1 (ja) | 2011-04-28 |
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PCT/JP2009/068130 WO2011048675A1 (ja) | 2009-10-21 | 2009-10-21 | 車体構造 |
Country Status (5)
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US (1) | US8915537B2 (ja) |
EP (1) | EP2492151A4 (ja) |
JP (1) | JP5218666B2 (ja) |
CN (1) | CN102574492B (ja) |
WO (1) | WO2011048675A1 (ja) |
Families Citing this family (1)
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JP6947046B2 (ja) * | 2018-01-16 | 2021-10-13 | トヨタ自動車株式会社 | 耐力決定方法 |
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JPS49128415A (ja) * | 1973-04-16 | 1974-12-09 | ||
JPH02296557A (ja) * | 1989-05-10 | 1990-12-07 | Nissan Motor Co Ltd | バンパステーの取付け構造 |
JP2002145113A (ja) * | 2000-11-10 | 2002-05-22 | Mazda Motor Corp | 車両の前部車体構造 |
JP2005162049A (ja) * | 2003-12-03 | 2005-06-23 | Toyota Motor Corp | 車両の衝撃吸収部材 |
JP2006205943A (ja) | 2005-01-28 | 2006-08-10 | Toyota Motor Corp | 車体構造 |
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JPH0580917A (ja) | 1991-09-19 | 1993-04-02 | Matsushita Electric Ind Co Ltd | タブレツトの座標指示装置収納器 |
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JPH11255154A (ja) | 1998-03-10 | 1999-09-21 | Nissan Motor Co Ltd | 自動車車体側面補強構造 |
CN1157304C (zh) * | 2001-04-23 | 2004-07-14 | 王武生 | 一种车辆碰撞吸能安全装置 |
GB0119357D0 (en) * | 2001-08-08 | 2001-10-03 | Dow Chemical Co | Energy absorption unit |
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JP2006273134A (ja) | 2005-03-29 | 2006-10-12 | Toyota Motor Corp | 車両後部構造 |
FR2895341B1 (fr) * | 2005-12-23 | 2008-04-04 | Plastic Omnium Cie | Systeme d'absorption d'energie pour un vehicule automobile |
JP4845688B2 (ja) * | 2006-11-21 | 2011-12-28 | 株式会社日立製作所 | 車両 |
JP4092711B1 (ja) | 2006-11-27 | 2008-05-28 | いすゞ自動車株式会社 | キャブオーバー型車両の前部構造 |
US7568755B2 (en) * | 2007-03-23 | 2009-08-04 | Honda Motor Co., Ltd. | Rear frame structure for vehicle |
JP2010202093A (ja) * | 2009-03-05 | 2010-09-16 | Mazda Motor Corp | 車両の車体構造 |
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2009
- 2009-10-21 JP JP2011537056A patent/JP5218666B2/ja not_active Expired - Fee Related
- 2009-10-21 EP EP09850573.8A patent/EP2492151A4/en not_active Withdrawn
- 2009-10-21 WO PCT/JP2009/068130 patent/WO2011048675A1/ja active Application Filing
- 2009-10-21 CN CN200980162058.3A patent/CN102574492B/zh not_active Expired - Fee Related
- 2009-10-21 US US13/497,396 patent/US8915537B2/en not_active Expired - Fee Related
Patent Citations (5)
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JPS49128415A (ja) * | 1973-04-16 | 1974-12-09 | ||
JPH02296557A (ja) * | 1989-05-10 | 1990-12-07 | Nissan Motor Co Ltd | バンパステーの取付け構造 |
JP2002145113A (ja) * | 2000-11-10 | 2002-05-22 | Mazda Motor Corp | 車両の前部車体構造 |
JP2005162049A (ja) * | 2003-12-03 | 2005-06-23 | Toyota Motor Corp | 車両の衝撃吸収部材 |
JP2006205943A (ja) | 2005-01-28 | 2006-08-10 | Toyota Motor Corp | 車体構造 |
Non-Patent Citations (1)
Title |
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Also Published As
Publication number | Publication date |
---|---|
EP2492151A4 (en) | 2013-04-10 |
CN102574492B (zh) | 2014-09-10 |
US20120212007A1 (en) | 2012-08-23 |
JP5218666B2 (ja) | 2013-06-26 |
CN102574492A (zh) | 2012-07-11 |
US8915537B2 (en) | 2014-12-23 |
EP2492151A1 (en) | 2012-08-29 |
JPWO2011048675A1 (ja) | 2013-03-07 |
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