JP6586024B2 - Body floor structure - Google Patents

Description

  The present invention relates to a vehicle body floor structure having a front row seat and a rear row seat.

  For example, Patent Document 1 discloses a rear floor structure including a reinforcement for connecting a cross member, a belt anchor attachment portion, and a seat back support bracket on a cushion floor pan.

  In the rear floor structure disclosed in Patent Document 1, when a large load toward the front is applied to the seat belt and a tensile load is applied to the belt anchor mounting portion that is pulled forward by the seat belt, the tensile load is applied to the seat belt. It can be received by a cross member connected via a back support bracket and reinforcement, and can be dispersed throughout the vehicle body.

Japanese Patent No. 4412811

  By the way, when the front row seat is foldable around the front rotation axis and a detachable portion that can be detached from the floor is provided at the rear of the front row seat, the detachable portion is moved from the floor panel to the floor panel. When sitting and setting a seated state, it is necessary to secure a footrest space for an occupant seated in a rear row seat located behind the front row seat to place a foot on the floor panel.

  Patent Document 1 discloses the point of preventing the movement of the position of the rear seat and the belt anchor due to the deformation of the cushion floor pan. However, there is no disclosure or suggestion about the point of securing the occupant's footrest space.

  The present invention has been made in view of the above points, and an object of the present invention is to provide a vehicle body floor structure that can secure a footrest space for an occupant seated in a rear row seat.

  In order to achieve the above-mentioned object, the present invention provides a front row seat in which seat cushions of a 6: 4 split seat divided into a left-right width ratio of 6: 4 are provided so as to be foldable around a front rotation axis, The front row seat includes a rear row seat for two persons positioned at the rear of the vehicle, a floor panel, and left and right rear frames, and the front row seat is a rear detachable rear portion capable of detaching the rear portion of the front row seat from the floor panel. And the rear detachable portion of the six-divided seat is disposed on one side of the rear frame and a gusset that protrudes upward from the floor panel and is positioned in the center in the left-right direction, and is divided into four The rear detaching portion of the seat protrudes upward from the rear frame on the other side and the floor panel, and is off from the central gusset to the rear frame side on the other side. Characterized in that it is arranged on the Tsu you encountered a gusset.

  According to the present invention, the rear detachment portion is arranged in the center gusset and the gusset offset to the rear frame side. Thus, one occupant located on one side of the rear row seat can place both feet in the space between the rear frame on one side and the central gusset. The other occupant located on the other side of the rear row seat can place one foot in the space between the center gusset and the offset gusset, and the other gusset and the rear rear gusset. Can be placed in the space between the frames. Thus, by securing the footrest space for the occupant seated in the rear row seat, when the front row seat is returned from the folded state to the seated state, the occupant foot of the rear row seat interferes with the rear attachment / detachment portion (contact). ) Can be preferably avoided.

  In other words, the front row seat is changed from the folded state to the seated state by guiding (inducing) each of the occupant's feet so that the offset gusset is located between both feet of the other occupant located on the other side of the rear row seat. When returning, it is possible to suitably avoid that the occupant's feet (particularly the toe portion) of the rear row seat interfere (contact) with the rear attachment / detachment portion of the front row seat.

  Further, the present invention is characterized in that the front row seat includes a seat belt buckle.

  In the prior art disclosed in Patent Document 1, a configuration in which the belt anchor mounting portion is fixed to the cushion floor pan is employed. On the other hand, according to the present invention, it is not necessary to fix the belt anchor attaching portion to the floor panel, and the seat belt buckle can be displaced integrally with the front row seat. As a result, according to the present invention, a mounting space for the belt anchor mounting portion is not required, and it is possible to secure a footrest space for an occupant sitting on the rear row seat.

  Furthermore, the present invention is a seat in which the seat cushion provided with the seat belt buckle is folded around the front rotation shaft by removing the rear detachable portion, and the rear detachable portion is disposed on the seat cushion side. And a striker disposed on the floor panel side. The striker is coupled to the gussets, and the gussets are positioned at least on the upper surface of the floor panel at the rear of the vehicle. It is connected to the upper cross member extending in the direction.

  According to the present invention, for example, when the frontal collision of the vehicle, the tensile load applied to the seat belt that restrains the occupant seated in the front row seat is suitable for the upper cross member to which the rear end of each gusset is coupled. Can be absorbed (supported).

  Furthermore, in the present invention, each of the gussets is coupled to a reinforcing member in which a portion near the striker is located on a lower surface of the floor panel across the floor panel, and the reinforcing member is positioned on a lower surface of the floor panel. And a lower cross member extending in the left-right direction.

  According to the present invention, for example, when the vehicle collides frontward, the tensile force applied to the seat belt that restrains the occupant seated on the front row seat is applied to the lower cross member via the reinforcing member located on the lower surface of the floor panel. It can absorb (support) suitably.

  Furthermore, the present invention is characterized in that each of the gussets has a recessed groove formed on the side wall of the hat cross section, and both end sides of the striker exhibiting a U-shape are welded to the recessed groove. And

  According to the present invention, the strength against the tensile load applied at the time of the front collision can be improved by fixing the striker to the recessed groove of the gusset.

  Furthermore, according to the present invention, each gusset has an opening on the upper surface of the hat cross section, and the opening has a recess corresponding to the shape of the opening and recessed toward the floor panel. It is characterized by being blocked by

  According to the present invention, the hook of the rear detachable part can be smoothly detached from the striker of the gusset because the lid member has the concave portion recessed toward the floor panel. Moreover, it is possible to prevent dust and the like from entering the gusset by closing the opening of the gusset with the lid member. Furthermore, by providing a lid member on the upper surface of the gusset, it is possible to suitably absorb (support) the tensile load applied to the side wall of the gusset via the striker.

  According to the present invention, it is possible to obtain a vehicle body floor structure that can secure a footrest space for an occupant seated in a rear row seat.

1 is a partially omitted perspective view showing a vehicle body floor structure according to an embodiment of the present invention. FIG. 3 is a partially omitted perspective view illustrating a state in which a second row sheet and a third row sheet are removed from FIG. 1. It is a partially-omission perspective view which shows a center gusset and the offset gusset, respectively. (A) is a top view of the 2nd row seat and the 3rd row seat which removed the seat back from the 2nd row seat, (b) is a side view showing the state changed from the seating state of the 2nd row seat to the folding state It is. It is a partially-omission perspective view which shows the coupling | bonding state of a center gusset and the offset gusset, and an upper cross member. It is a partially omitted bottom view of the vehicle body as seen from the back side. (A) is a partially omitted perspective view showing a state in which the striker is coupled to the recessed groove of the gusset, (b) is a partially omitted perspective view showing a state in which the striker is removed from the state of (a), (C) is a partially omitted perspective view showing a state in which the lid member is removed from the state of (b). It is a partially-omission perspective view which shows the arrangement | positioning state of the passenger | crew's leg | foot_seat sitting on the 3rd row seat.

  Next, embodiments of the present invention will be described in detail with reference to the drawings as appropriate. 1 is a partially omitted perspective view showing a vehicle body floor structure according to an embodiment of the present invention, and FIG. 2 is a partially omitted perspective view showing a state in which the second row seat and the third row seat are removed from FIG. is there. In each figure, “front and rear” indicates the vehicle longitudinal direction, “left and right” indicates the left and right direction (vehicle width direction), and “up and down” indicates the vertical vertical direction.

  As shown in FIGS. 1 and 2, a vehicle body floor structure 10 according to an embodiment of the present invention includes a pair of rear frames 12, 12 that are spaced apart from each other in the left-right direction, and a pair of rear frames 12, 12. And a floor panel 14 disposed between the two.

  The pair of rear frames 12 and 12 are metal hollow members that constitute a vehicle body skeleton (vehicle body frame), and are spaced apart from each other in the left-right direction. Each rear frame 12 extends along the vehicle front-rear direction on both sides at the rear of the vehicle body.

  As shown in FIG. 2, a floor cross member (middle floor cross member) 16 is installed between front ends of the pair of rear frames 12, 12 along the vehicle front-rear direction. A rear cross member 18 is installed between intermediate portions of the pair of rear frames 12 and 12 along the vehicle front-rear direction. The floor cross member 16 and the rear cross member 18 are made of metal hollow members constituting the vehicle body skeleton, and extend along the left-right direction of the vehicle (not shown).

  The floor panel 14 is made of a metal plate-like member constituting a floor surface of a vehicle (not shown), and is stretched between a pair of rear frames 12 and 12. The front side of the floor panel 14 is supported by the floor cross member 16. An intermediate portion of the floor panel 14 is supported by the rear cross member 18.

  The vehicle (not shown) is constituted by, for example, a three-row seat type automobile. A first row seat (front seat) (not shown) includes, for example, a driving seat and an assistant seat arranged side by side in the left-right direction. As shown in FIG. 1, the second row seat (second bench seat) 20 a functions as a “front row seat”, and is configured by a 6: 4 divided sheet in which the left-right width ratio is divided into 6: 4. Yes. Six divided sheets are arranged on the right side along the left-right direction, and four divided sheets are arranged side by side on the left side. The third row seat (third seat) 20b functions as a “rear row seat” and is a two-seat seat (rear row width ratio is divided into 5 to 5) located in the rear of the second row seat 20a. 5 sheets).

  FIG. 3 is a partially omitted perspective view showing the center gusset and the offset gusset, respectively. FIG. 4A is a plan view of the second row seat and the third row seat with the seat back removed from the second row seat. FIG. 4B is a side view showing a state in which the seating state of the second row seat is switched from the seating state to the folded state, and FIG. 5 is a partially omitted perspective view showing the coupling state between the center gusset and the offset gusset and the upper cross member. FIG.

  As shown in FIGS. 1 and 4 (a) and 4 (b), the seats constituting the second row seat 20a and the third row seat 20b tilt to the seat cushion 22 and the rear end portion of the seat cushion 22. A seat back 24 that can be attached, a hook 26 that is located at the lower rear of the seat cushion 22 and that can be rotated integrally with the seat cushion 22, and a front rotation that is provided at the lower front of the seat cushion 22 And a shaft 28. The seat cushions 22 are provided so as to be foldable around the front rotation shaft 28 (see FIG. 4B).

  As shown in FIGS. 1 and 2, the second row seat 20 a has a rear detachable portion 30 that can detach the rear portion of the seat cushion 22 from the floor panel 14. The wide six-split sheet rear attachment / detachment portion 30 is arranged on the right (one side) rear frame 12 along the left-right direction and a gusset 32 that protrudes upward from the floor panel 14 and is located in the center in the left-right direction. Has been.

  The rear detachable portion 30 of the four-divided sheet narrower than the six-divided sheet projects toward the upper side of the rear frame 12 on the left side (the other side) opposite to the right side (one side) and the floor panel 14. The gussets 32 are offset from the gussets 32 on the left (other side) rear frame 12 side. The central gusset 32 has a longer length in the vehicle front-rear direction than the offset gusset 34 (see FIGS. 2, 3, and 5).

  The second row seat 20 a includes a seat belt device including a seat belt buckle 36. This seat belt device is composed of, for example, a three-point seat belt device, a retractor having a belt reel, a webbing pulled out from the retractor to restrain an occupant, and inserted into the webbing to be seat belt buckle 36 (FIGS. 1 and 4). It is comprised by the tongue plate etc. with which (b) reference) is mounted | worn.

  In the present embodiment, only the seat belt buckle 36 of the second row seat 20a is shown, and other components of the seat belt device are not shown. A seat belt device (not shown) is also arranged in the third row seat 20b. Further, the seat belt device is not limited to a three-point seat belt, and for example, a separate storage type seat belt may be used.

  In the second row seat 20a (six-part seat and four-part seat), the seat cushion 22 provided with the seat belt buckle 36 is configured by a seat that is folded around the front rotating shaft 28 by removing the rear detachable portion 30. .

  Each rear detachable portion 30 includes a hook 26 disposed on the seat cushion 22 side and a striker 40 disposed on the floor panel 14 side. The hook 26 has a locking recess 38 that contacts the striker 40 when the seat cushion 22 is seated on the floor panel 14 (see FIGS. 1 and 4B). When the striker 40 comes into contact with the locking recess 38, the striker 40 is locked via a locking mechanism (not shown). Thereby, the separation of the seat cushion 22 from the floor panel 14 is prevented. By operating a release mechanism (not shown) such as a release lever or a release button by manual operation of the occupant, the locked state of the striker 40 is released, and a release state in which the hook of the rear attachment / detachment portion can be detached from the striker. It becomes.

  When switching from the seated state in which the second row seat 20a is seated on the floor panel 14 to the folded state, first, as shown in FIG. 4B, the seat back 24 of the second row seat 20a is first moved forward (arrow A). Direction), the rear detachable portion 30 is brought into a release state via a release mechanism (not shown). Subsequently, the second row seats 20a are folded by rotating the seat back 24 and the seat cushion 22 counterclockwise (arrow B direction) with the front rotation shaft 28 positioned on the front side of the seat cushion 22 as the rotation center. It can be.

  6 is a partially omitted bottom view of the vehicle body as seen from the rear side, FIG. 7A is a partially omitted perspective view showing a state where the striker is coupled to the recessed groove of the gusset, and FIG. FIG. 7A is a partially omitted perspective view showing a state where the striker is removed from the state of FIG. 7A, and FIG. 7C is a partially omitted perspective view showing a state where the lid member is removed from the state of FIG. It is.

  Each of the gussets 32 and 34 has a hat cross-sectional shape orthogonal to the axial direction, and is fixed on the floor panel 14 via fixing means such as welding. Recessed grooves 44 are formed in the side walls 42 on opposite sides of the hat cross-sectional shape (see FIG. 7B). The recessed groove 44 has a curved cross-sectional shape and extends in a straight line substantially along the vertical direction. A striker 40 is also arranged on the pair of left and right rear frames 12, 12, and the striker 40 is firmly fixed to the upper surface of each rear frame 12 by, for example, welding.

  As shown in FIGS. 7A and 7B, both end sides of the U-shaped striker 40 are firmly joined to the recessed grooves 44 of the gussets 32 and 34 by, for example, MIG welding ( Have been combined). The rear end portions of the gussets 32 and 34 are coupled to an upper cross member 46 (see FIG. 5) that extends at least on the upper surface of the floor panel 14 at the rear of the vehicle and extends in the left-right direction.

  As shown in FIG. 6, each of the gussets 32, 34 is coupled to a plurality of reinforcing members 48 located on the lower surface of the floor panel 14 with the vicinity of the striker 40 interposed therebetween. Each reinforcing member 48 is coupled to a lower cross member 50 located on the lower surface of the floor panel 14 and extending in the left-right direction.

  In other words, the portions of the gussets 32 and 34 to which the striker 40 is fixed and the reinforcing member 48 on the lower surface of the floor panel 14 are arranged at positions that overlap in the vertical direction with the floor panel 14 interposed therebetween. The reinforcing member 48 is integrally formed by a flat plate-like flat part 48 a connected to the floor panel 14 and a bent part 48 b that is substantially orthogonal to the flat part 48 a and connected to the lower cross member 50.

  Each of the gussets 32 and 34 has an opening 52 formed on the top surface of the hat cross section and having a rectangular shape in plan view (see FIG. 7C). The opening 52 is closed by a lid member 56 having a recess 54 corresponding to the shape of the opening 52 and recessed toward the floor panel 14 (see FIG. 7B).

  The vehicle body floor structure 10 according to the present embodiment is basically configured as described above. Next, the function and effect will be described. FIG. 8 is a partially omitted perspective view showing an arrangement state of feet of passengers seated on the third row seat.

  In the present embodiment, the rear detachment portion 30 is disposed in the center gusset 32 and the gusset 34 offset to the left rear frame 12 side. Accordingly, in the present embodiment, as shown in FIG. 8, one occupant P1 located on the right side (one side) of the third row seat 20b is connected to the rear frame 12 on the right side (one side) and the central gusset 32. Both feet can be placed in the space between each. The other occupant P2 located on the left side (other side) of the third row seat 20b can place one right foot in a space between the central gusset 32 and the offset gusset 34, and the other left foot. Can be placed in the space between the offset gusset 34 and the left (other side) rear frame 12.

  As described above, in the present embodiment, when the second row seat 20a is returned from the folded state to the seated state by securing the footrest space for the passengers P1 and P2 seated on the third row seat 20b, the third row It can be suitably avoided that the legs of the passengers P1 and P2 of the seat 20b interfere (contact) with the rear detachment portion 30 of the second row seat 20a.

  In other words, in the present embodiment, the offset gusset 34 is positioned between both feet of the other occupant P2 located on the left side (the other side) of the third row seat 20b (in the left-right direction, both feet of the occupant P2). Each of the legs of the occupant P2 is guided (guided) so as to straddle the gusset 34. As a result, in the present embodiment, when the second row seat 20a is returned from the folded state to the seated state, the foot (particularly, the toe portion) of the occupant P2 of the third row seat 20b is detachable after the second row seat 20a. Interference (contact) with the portion 30 can be preferably avoided.

  For example, in the prior art disclosed in Patent Document 1, a configuration in which a belt anchor mounting portion is fixed to a cushion floor pan is employed. On the other hand, in this embodiment, it is not necessary to fix the belt anchor attaching portion to the floor panel 14, and the seat belt buckle 36 can be displaced integrally with the second row seat 20a. As a result, in the present embodiment, the space for attaching the belt anchor as in the prior art is not required, and it is possible to secure the footrest space for the passengers P1 and P2 seated on the third row seat 20b.

  Further, in the present embodiment, for example, when the vehicle collides with the front, the rear ends of the gussets 32 and 34 combine the tensile load applied to the seat belt that restrains the occupant seated on the second row seat 20a. The upper cross member 46 thus formed can be suitably absorbed (supported).

  Furthermore, in the present embodiment, for example, when the vehicle collides with the front, the reinforcing member 48 positioned on the lower surface of the floor panel 14 applies the tensile load applied to the seat belt that restrains the occupant seated on the second row seat 20a. It is possible to absorb (support) the lower cross member 50 more suitably through the.

  Furthermore, in this embodiment, the strength against the tensile load applied at the time of the front collision can be improved by fixing the striker 40 to the recessed groove 44 of the gussets 32 and 34.

  Furthermore, in the present embodiment, the cover member 56 has the recess 54 that is recessed toward the floor panel 14, so that the hook 26 of the rear detachable portion 30 can be smoothly and easily applied to the striker 40 of the gussets 32 and 34. Can be desorbed. Further, since the opening 52 of the gussets 32 and 34 is closed by the lid member 56, it is possible to prevent dust and the like from entering the inside of the gussets 32 and 34 having a cross-sectional hat shape. Further, by providing the lid member 56 on the upper surfaces of the gussets 32 and 34, the tensile load applied to the side walls 42 of the gussets 32 and 34 via the striker 40 can be suitably absorbed (supported).

10 Car Body Floor Structure 12 Rear Frame 14 Floor Panel 20a Second Row Seat (Front Row Seat)
20b 3rd row sheet (back row sheet)
22 Seat Cushion 26 Hook 28 Front Rotating Shaft 30 Rear Detachment Section 32 Gusset (Gusset located in the center)
34 Gusset (offset gusset)
36 seat belt buckle 40 striker 42 side wall 44 hollow groove 46 upper cross member 48 reinforcing member 50 lower cross member 52 opening 54 concave portion 56 lid member

Claims (6)

A front row seat in which seat cushions of 6: 4 divided seats, in which the left-right width ratio is divided into 6: 4, are each foldable around the front rotation axis;
A rear row seat for two persons located in the rear of the front row seat;
Floor panels,
Left and right rear frames,
With
The front row seat has a rear detachable portion that can detach the rear portion of the front row seat from the floor panel,
The rear detachable portion of the six-divided seat is disposed on one side of the rear frame and a gusset that protrudes upward from the floor panel and is positioned in the center in the left-right direction,
The rear detachable portion of the four-part seat is respectively provided on the rear frame on the other side and a gusset that protrudes upward from the floor panel and is offset from the central gusset to the rear frame side on the other side. Vehicle body floor structure characterized by being arranged. The vehicle body floor structure according to claim 1,
The front row seat includes a seat belt buckle. The vehicle body floor structure according to claim 2,
The seat cushion provided with the seat belt buckle is a seat that is folded around the front rotation axis by removing the rear detachable portion,
The rear detachable part is composed of a hook disposed on the seat cushion side and a striker disposed on the floor panel side,
The striker is coupled to each gusset,
Each of the gussets is coupled to an upper cross member that is positioned at least on the upper surface of the floor panel at the rear of the vehicle and extends in the left-right direction. The vehicle body floor structure according to claim 3,
Each of the gussets is combined with a reinforcing member in which a portion near the striker is located on the lower surface of the floor panel with the floor panel interposed therebetween,
The vehicle body floor structure according to claim 1, wherein the reinforcing member is coupled to a lower cross member that is located on a lower surface of the floor panel and extends in the left-right direction. The vehicle body floor structure according to claim 3,
Each gusset has a recessed groove formed in the side wall of the hat cross section,
A vehicle body floor structure characterized in that both end sides of the striker having a U-shape are welded to the recessed groove. In the vehicle body floor structure according to claim 5,
Each gusset has an opening on the top surface of the hat cross section,
The vehicle body floor structure, wherein the opening is closed with a lid member corresponding to the shape of the opening and having a recess recessed toward the floor panel.

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