JP6566006B2 - Rear structure of the vehicle - Google Patents

Description

  The present invention relates to a rear structure of a vehicle capable of smoothly getting off by avoiding interference between a foot portion of the vehicle and a vehicle when a rear seat passenger gets off.

  Conventionally, a vehicle in which a fuel tank and a battery are disposed under a rear seat is known. For example, as in Patent Documents 1 and 2, the floor panel that partitions the vehicle compartment where the rear seat is disposed and the outside of the vehicle compartment is provided with a kick-up portion that is stepped up to the rear of the vehicle below the rear seat, A fuel tank and a battery are disposed outside the passenger compartment behind the kick-up portion.

  The kick-up portion forms a closed member in cooperation with the panel member extending in the vehicle width direction to form a cross member extending in the vehicle width direction. The cross member is connected to left and right side sills extending in the front-rear direction of the vehicle and contributes to vehicle rigidity.

JP 2011-111124 A JP 2015-214232 A

  The rear seat has its left and right front end corners rounded and retracted to increase the cabin space so that passengers can easily get on and off even when the rear door is not fully open. The kick-up part under the rear seat has advanced to the vehicle interior side so as to substantially coincide with the front end of the rear seat in order to increase the arrangement space of the fuel tank etc. under the rear seat, and the left and right front ends of the rear seat At the corner, the vehicle is in the cabin rather than the rear seat.

  Here, the movement until the landing of the lower limbs when the passenger in the rear seat gets off includes rotational movement of the thigh. The present inventor has found that the rotational movement of the thigh has a rotation angle range that is difficult to rotate. The rotation angle range corresponds to an operation in which the occupant of the rear seat takes the foot out of the vehicle beyond the side sill.

  In addition, a center pillar is erected from the side sill, and the occupant of the rear seat increases the knee joint bending at least in part of the rotation angle range so that the foot does not collide with the center pillar. The action which pulls a part and a leg back is performed. At the same time, there is a case where an operation (inner rotation) is performed in which the foot is twisted in the direction opposite to the rotational direction of the thigh together with the lower leg. Since these operations are performed in a rotation angle range in which the thighs are difficult to rotate, it is not easy to perform in conjunction with the thigh rotations, and it is difficult to perform the operations as intended by the occupant. Therefore, the center pillar and the kick-up portion and the occupant's feet are likely to interfere with each other when getting off, and the occupant may not be able to get off smoothly.

  An object of the present invention is to provide a rear structure of a vehicle that can smoothly get off.

The invention of claim 1 includes a rear seat of a vehicle, a rear seat door adjacent to the rear seat, a pillar portion hinged to the front end portion of the rear seat door, and a vehicle width direction below the rear seat. In the rear structure of a vehicle having a floor panel having a kick-up portion that constitutes an extending cross member, the hip point set at the center in the vehicle width direction of the rear portion of the seat surface portion of the seat adjacent to the rear seat door is a rotation center When the occupant seated on the seat surface rotates the thigh of the lower limb to move the bent lower limb on the rear seat door side out of the vehicle, the occupant moves along with the rotational movement of the thigh. wherein as the kick-up portion and the pillar portion to the foot portion of the leg does not interfere, a portion corresponding to a preset rotation angle range of the thigh in the kick-up portion the kick-up portion on the front side A interference avoiding portion formed lower than the ridge line portion extending in the vehicle width direction by and retraction of the parts, it is characterized by comprising a retractable-formed interference avoidance section of the foot.

  According to the above configuration, when the passenger in the rear seat gets off, the thigh of the bent lower limb on the rear seat door side is rotated to the rear seat door side with the hip point as the center. At this time, in order to prevent the kick-up part below the pillar part and the rear seat from interfering with the foot part moving together with the thigh part, the kick-up part corresponds to a predetermined rotation angle range of the thigh part. Since the interference avoiding portion that can retract the foot portion is provided, it is possible to avoid interference with the foot portion due to the pillar portion and the kick-up portion.

Wherein the invention of claim 2, in claim 1, wherein the interference avoiding portion, the thighs when the rotation angle when parallel to the longitudinal direction of the vehicle as 0 °, in which the 5 0 ° and the center It is characterized by being provided at a position corresponding to the rotation angle range.

  According to the above configuration, the kick-up unit is provided with the interference avoidance unit so as to correspond to the rotation angle range of the thigh where the occupant is difficult to rotate and move around the thigh and the kick-up unit and the foot are likely to interfere with each other. ing. Therefore, it is possible to retract the foot part to the interference avoidance part in the rotation angle range of the thigh that is difficult to rotate, and avoid interference between the pillar part and the kick-up part and the foot part when the thigh is rotationally moved. is there.

According to a third aspect of the present invention, in the second aspect of the present invention, the interference avoiding portion is provided so as to be recessed from the passenger compartment side to the vehicle outer side, and the position corresponding to the center of the rotation angle range is recessed most. It is characterized by that.

  According to the above configuration, the most recessed top portion of the interference avoiding portion formed in a recessed shape from the passenger compartment side to the vehicle outer side is the rotation that is most difficult to rotate and move the thigh at the center of the rotation angle range of the thigh. It is provided at a position corresponding to the corner. Therefore, the foot can be retracted most greatly at the rotation angle of the thigh that is most difficult to rotate, and interference between the pillar and kick-up portions and the foot during rotation of the thigh can be avoided.

  According to the rear structure of the vehicle of the present invention, when the occupant of the rear seat gets off, it is possible to avoid the interference between the pillar part and the kick-up part and the foot of the occupant, and to get off smoothly. It is.

It is a top view of a vehicle. It is a side view of the vehicle except for the door for vehicles. It is a perspective view of the rear part structure of the vehicle in the embodiment of the present invention. FIG. 4 is an enlarged perspective view of a main part showing a vehicle right side part of the kick-up part of FIG. 3. FIG. 5 is a main part enlarged perspective view showing an example of a vehicle right side portion of a kick-up portion different from FIG. 4. It is a principal part top view explaining the rotational movement of a thigh. It is a figure which shows the joint passive resistance of the hip joint in the rotational movement of a thigh. It is a figure which shows the example which evaluated the effect of the interference avoidance part by jerk.

  Hereinafter, a rear structure of a vehicle according to an embodiment of the present invention will be described with reference to the drawings.

  As shown in FIGS. 1 to 3, left and right side surfaces of the vehicle 1 are provided with side opening portions 2 for passengers to get on and off the vehicle 1, respectively. A seat right door 3a, a front seat left door 3b, a rear seat right door 3c, and a rear seat left door 3d are provided. The vehicle 1 includes a pair of left and right side sills 5 extending in the vehicle width direction at both ends of the lower side of the vehicle door, and a plurality of cross members (not shown) that extend in the vehicle width direction and connect the pair of side sills 5. And a floor panel 8 which is disposed so as to bridge between the pair of side sills 5 and partitions the vehicle compartment and the outside of the vehicle.

  A right front seat 6a, a left front seat 6b, and a rear seat 7 are arranged in the passenger compartment, one for each of the right front seat 6a and the left front seat 6b, and the right rear seat 7a and the left rear seat for the rear seat 7. A passenger can be seated on the rear seat 7c. Although it is common to all seats, for example, the right rear seat 7a is provided with a seat surface portion 16, a backrest portion 17, a headrest 18 and the like, and an occupant who sits down on the seat surface portion 16 bends a knee joint to Sit in the state of wearing. The seat surface portion 16 and the backrest portion 17 are formed by covering the surface of a cushion member such as urethane that can be elastically deformed with leather or fabric so as to ensure comfort, so that the right front end corner portion of the seat surface portion 16 can easily get on and off. It is rounded.

  The side opening 2 on the right side of the vehicle 1 includes a hinge pillar 10 erected at the front end portion of the side sill 5, a front pillar 11 that extends upward and rearward from the upper end portion of the hinge pillar 10, and a rear end of the front pillar 11. Surrounded by a roof side rail 12 extending rearward from the portion, a rear pillar 13 standing at a rear end portion of the side sill 5 and connected to a rear end portion of the roof side rail 12, and standing at an intermediate portion of the side sill 5 The center side pillar 14 (pillar part) connected to the middle part of the roof side rail 12 is divided forward and backward. The side opening 2 is generally wider on the front side than the center pillar 14 in the front-rear direction compared to the rear side of the center pillar 14. The same applies to the left side of the vehicle 1.

  On the right side of the vehicle 1, the front seat right door 3 a adjacent to the right front seat 6 a and the rear compartment of the side opening 2 are opened and closed so that the front compartment of the center pillar 14 of the side opening 2 can be opened and closed. A rear seat right door 3c (rear seat door) adjacent to the right rear seat 7a is provided as possible. Although illustration is omitted, the front seat right door 3a has a front end portion hinged to the hinge pillar 10, and the rear seat right door 3c has a front end hinged to the center pillar 14 and around the axis of the hinge connection. Each is opened and closed by rotating. Also, although not shown, door checkers are provided at the front end portions of the front seat right door 3a and the rear seat right door 3c so that they can be maintained at a predetermined intermediate opening or fully opened position. The same applies to the front seat left door 3b and the rear seat left door 3d, which are vehicle doors on the left side of the vehicle 1.

  The floor panel 8 is provided with a kick-up portion 9 that is bent upward so as to extend rearward under the rear seat 7 and then further bent so as to continue to the rear of the vehicle. The rear seat 7 is disposed on the upper side of the floor panel 8 extending rearward from the kick-up portion 9, and a fuel tank or the like (not shown) is disposed on the lower side of the floor panel 8 behind the kick-up portion 9. Although not shown in the drawings, the kick-up portion 9 forms a cross member that forms a closed cross-section in cooperation with the panel member disposed outside the vehicle and extends in the vehicle width direction. The left and right side sills 5 are connected to each other and contribute to the rigidity of the vehicle 1.

  As shown in FIGS. 3 and 4, the right side connecting member 20 that forms the right side portion of the kick-up portion 9 of the floor panel 8 and is connected to the side sill 5 on the right side of the vehicle 1 has a front surface portion 21 at the center in the vehicle width direction. From the first middle part 22 to the right side sill 5 of the vehicle 1 so that the height becomes lower and the height of the side sill 5 is reduced at the right end. It becomes lower than the height. The upper surface portion 23 of the right connection member 20 extends substantially horizontally from the center side in the vehicle width direction to the right side to the second middle portion 24 located between the first middle portion 22 and the side sill 5, and from the second middle portion 24. It is formed in an inclined shape so as to become lower as it approaches the side sill 5 and coincides with the height of the side sill 5 at the right end.

  The front edge of the upper surface portion 23 of the right side connection member 20 and the upper end of the front surface portion 21 are connected so as to be substantially orthogonal from the center in the vehicle width direction to the first middle portion 22 to form a first ridge line portion 25 extending horizontally. ing. A slope part 26 corresponding to a substantially flat interference avoiding part is provided from the first middle part 22 to the right end and continuing from the front end of the upper face part 23 to the upper end of the front face part 21, and the second ridge line part is formed by the upper face part 23 and the slope part 26. 27 is formed, and the third ridge portion 28 is formed by the slope portion 26 and the front surface portion 21. The front side portion 21, the slope portion 26, and the flange portions 29 a and 29 b provided at the right end of the upper surface portion 23 are connected to the right side sill 5 of the vehicle 1. The slope portion 26 is lower than the extension line obtained by virtually extending the first ridge line portion 25 to the side sill 5 and recedes to enlarge the space on the passenger compartment side. Further, the rigidity is ensured by the second and third ridge line portions 27 and 28 formed by providing the slope portion 26.

  Instead of the right side connection member 20, a right side connection member 20A having a slope portion 26A corresponding to an interference avoiding portion formed in a recessed shape on the vehicle outer side as shown in FIG. 5 may be employed. The space on the passenger compartment side is enlarged by the recessed inclined surface portion 26A than the substantially flat inclined surface portion 26. Other than the concave slope portion 26A is common to the right connection member 20, and the corresponding portions are denoted by the same reference numerals and description thereof is omitted.

  Since the vehicle 1 has a left-right symmetric shape, the description thereof will be omitted, but the left side connecting member 30 constituting the left side portion of the kick-up portion 9 connected to the left side sill 5 of the vehicle 1 shown in FIG. The space has been expanded. The interior of the floor panel 8 including the kick-up portion 9 is provided with a carpet-like interior member (not shown) having cushioning properties, sound insulation, etc., which improves safety and comfort in the vehicle interior. I am letting.

Next, based on FIG. 6 and FIG. 7, the rotational movement of the thigh at the time of getting off will be described taking the passenger in the right rear seat 7a as an example.
The passenger of the standard physique seated on the seating surface portion 16 rotates and moves outwardly while lifting the thigh 42 in order to bring out the bent lower right leg 41 on the rear seat right door 3c side when getting off the vehicle. The foot portion 44 that is the portion of the right lower limb 41 beyond the ankle is connected to the thigh portion 42 via the crus portion 43 and moves together with the rotational movement of the thigh portion 42.

  The rotational movement of the thigh 42 is performed with the hip point HP set at the center in the vehicle width direction of the rear portion of the seat surface 16 as the rotation center, and the thigh 42 is in a state parallel to the front-rear direction of the vehicle 1. The rotation angle θ is set to 0 °, and the entire foot portion 44 is rotated and moved until it comes out of the side sill 5 and land. The standard physique is, for example, the average physique of an adult male, and the length of the thigh 42 (the length from the butt to the knee of the occupant in the sitting position) is about 650 to 700 mm. In addition, the foot 44 may be landed with the lower leg 43 inwardly rotated in the direction opposite to the rotational direction of the thigh 42, and the rotation angle θ of the thigh 42 at the time of landing is compared with the case where the foot 44 is not inwardly rotated. Becomes smaller.

  At this time, the thigh 42 rotates and moves within the range of motion of the hip joint. When the joint passive resistance, which is an index of difficulty in moving the hip joint, is measured in accordance with the getting-off operation, the joint passive resistance increases as the rotation angle θ increases. The value of increases. In the vicinity of the rotation angle θ = 50 °, the value of the joint passive resistance reaches a peak and becomes larger than a predetermined comfort threshold L0 that does not feel difficult to move. As the thigh 42 is further rotated, the space for moving the foot 44 between the rear right seat 3c and the right rear seat 7a becomes wider. As a result, the occupant can move the thigh 42 downward or upward so that the occupant can rotate and move in a comfortable posture, so the value of the joint passive resistance is reduced. As described above, the occupant feels difficulty in rotational movement in the vicinity of the rotational angle θ = 50 ° at which the value of the joint passive resistance is larger than the comfort threshold L0 when the thigh 42 is rotationally moved. Further, since it is difficult to rotate, the vehicle cannot rotate as intended by the occupant, and the foot 44 and the vehicle 1 may collide and interfere with each other, which may hinder smooth getting-off operation.

  On the other hand, when the occupant of the right rear seat 7a rotates and moves the thigh 42, the foot 44 that moves along with the rotation may collide with the center pillar 14. To avoid this collision, the occupant pulls the foot 44 backward by increasing the bending of the knee joint. Further, the lower leg portion 43 and the foot portion 44 may be internally rotated so that the toes are directed toward the vehicle interior side. Since the right front end corner portion of the seat surface portion 16 is rounded and receded, the seat surface portion 16 and the crus 43 are less likely to collide even if the bending of the knee joint is increased. Further, a right connection member 20 having a slope portion 26 is disposed on the right side portion of the kick-up portion 9 below the right rear seat 7a, and the space on the vehicle compartment side enlarged by the slope portion 26 is rearward. Since a part of the foot part 44 pulled to the position can be used as a retractable space, the collision between the foot part 44 and the kick-up part 9 hardly occurs.

  The slope portion 26 is formed at a position corresponding to a predetermined rotation angle range of the thigh portion 42. The predetermined rotation angle range is 45 ° to 55 ° including a range exceeding at least the comfort threshold L0 with the rotation angle θ = 50 ° of the thigh 42 having the peak as a center based on the joint passive resistance. The range is preset. When the concave slope portion 26A is formed as shown in FIG. 5, the concave top portion is placed at a position corresponding to the rotation angle θ = 50 ° of the thigh 42 where the value of joint passive resistance becomes a peak. It is provided to match.

  When the occupant rotates the thigh 42 to get off, a part of the foot 44 (for example, the slope part 26 or the slope part 26A corresponding to the interference avoiding part formed in the rotation angle range in which the rotational movement is difficult to move) ), The interference with the center pillar 14 and the kick-up portion 9 can be avoided. Further, since the concave most concave top portion of the slope portion 26A is provided at a position corresponding to the rotation angle at which the joint passive resistance value reaches a peak, the retreat space is maximized, so that interference is further avoided. It becomes easy.

  FIG. 8 is an evaluation example of the temporal change in the jerk (acceleration change speed) during the rotational movement of the thigh 42. Curve 1 is the time change of the jerk when the interference avoiding unit is not formed, and curve L2 is the time change of the jerk when the interference avoiding unit is formed. Starting from the rotation angle θ = 0 °, the jerk in the range of 0.4 to 0.6 seconds corresponds to the rotational movement in the rotation angle range. In the curve L1, for example, the rotational movement suddenly stops due to a collision with the center pillar 14 or the like, so that the jerk greatly changes. This indicates that the rotational movement as intended by the occupant is not performed smoothly. On the other hand, it can be seen that the curve L2 is not greatly changed in the jerk compared to the curve L1, and the rotational movement is smoothly performed.

The operation and effect of the present invention will be described.
When the occupant of the right rear seat 7a gets off, the thigh 42 of the bent right lower leg 41 on the rear seat right door 3c side is rotated and moved to the rear seat right door 3c side with the hip point HP as the center. At this time, a predetermined rotation of the thigh 42 in the kick-up portion 9 is performed so that the foot 44 moving with the thigh 42 does not interfere with the center pillar 14 and the kick-up portion 9 below the right rear seat 7a. An interference avoidance portion (the slope portion 26 or the slope portion 26A) is provided so that the foot portion 44 can be retracted at a portion corresponding to the angular range. Therefore, when the thigh 42 is rotationally moved, the foot 44 is retracted to the interference avoiding unit, and interference with the foot 44 by the center pillar 14 and the kick-up unit 9 can be avoided. Since the vehicle 1 has a left-right symmetric structure, interference can be similarly avoided when the passenger in the left rear seat 7b gets off.

  Further, since the interference avoiding unit is difficult to rotate and move the thigh 42 based on the value of the joint passive resistance, the rotation angle of the thigh 42 in which the center pillar 14 and the kick-up unit 9 and the foot 44 are likely to interfere with each other. It is provided to correspond to the range. Therefore, it is possible to avoid the interference between the center pillar 14 and the kick-up portion 9 and the foot portion 44 by retracting the foot portion 44 to the interference avoiding portion within the rotation angle range of the thigh 42 where interference easily occurs.

  In addition, the interference avoidance portion formed by the concave slope portion 26A from the passenger compartment side to the vehicle exterior side corresponds to the rotation angle at which the thigh 42 in the center of the rotation angle range of the thigh 42 is most difficult to rotate. It is provided so that the most recessed top portion coincides with the position to be. Accordingly, the foot 44 can be retracted most greatly at the rotation angle of the thigh 42 which is most difficult to rotate, and the center pillar 14 and the kick-up portion 9 interfere with the foot 44 when the thigh 42 is rotated. Can be avoided.

  In addition, those skilled in the art can implement the invention by adding various modifications to the embodiment without departing from the spirit of the invention, and the invention includes such modifications.

1: Vehicle 3c: Rear seat right door 3d: Rear seat left door 5: Side sill 7: Rear seat 7a: Right rear seat 7b: Left rear seat 8: Floor panel 9: Kickup portion 14: Center pillar 16: Seat surface portion 20 , 20A: Right connection member 26, 26A: Slope portion (interference avoiding portion)
30: Left side connection member 42: Thigh 44: Foot HP: Hip point

Claims (3)

A rear seat of a vehicle, a rear seat door adjacent to the rear seat, a pillar portion hinged to a front end portion of the rear seat door, and a kick member constituting a cross member extending in the vehicle width direction under the rear seat In the rear structure of the vehicle with a floor panel having an up part,
An occupant seated on the seat surface portion is bent on the rear seat door side with the hip point set at the center in the vehicle width direction of the rear portion of the seat surface portion of the seat adjacent to the rear seat door as the center of rotation. When the thighs of the lower limbs are rotated and moved so that the pillars and the kick-up parts do not interfere with the legs of the lower limbs that move with the rotational movement of the thighs, Interference avoidance formed by lowering and retreating a portion corresponding to a preset rotation angle range of the thigh in the kick-up portion from a ridge line portion extending in the vehicle width direction of the front upper end portion of the kick-up portion a part, rear structure of a vehicle comprising the retractable-formed interference avoidance section of the foot. The interference avoidance unit, when the thigh is a 0 ° rotation angle when parallel to the longitudinal direction of the vehicle, 5 0 ° to a provided at a position corresponding to the rotation angle range with central The rear structure of the vehicle according to claim 1. The said interference avoidance part is formed in the recessed shape from the vehicle interior side to the vehicle outer side, and was provided so that the position corresponding to the said rotation angle range center might be recessed most. Vehicle rear structure.

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