JP2014210461A - Vehicle body structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enhance rigidity and damping performance of a floor panel, and also enhance habitability of a vehicle interior.SOLUTION: A vehicle body 11 includes right and left seat mounting parts 42R, 41R integrally formed with a floor panel 25. Right and left mounted parts 31, 32 of a seat 30R are mounted on the right and left seat mounting parts. An upper surface 25a of the floor panel is reinforced by joining a floor reinforcing member 50R between the right and left seat mounting parts. Lower surfaces of the right and left seat mounting parts are reinforced by joining right and left seat mounting reinforcing members 46R, 45R. Junctions 50a, 50b of the floor reinforcing member to the floor panel, and junctions 46a, 45a of the right and left seat mounting reinforcing members to the right and left seat mounting parts are respectively overlapped at least partially in a vehicle body vertical direction.

Description

  The present invention relates to an improved technique for a portion where a seat is disposed and a portion around the portion in a vehicle body of a vehicle such as a passenger car.

  For example, Patent Documents 1 and 2 disclose a technique having left and right seat attachment portions for attaching left and right attachment portions of a seat in a vehicle body.

  The vehicle body known from Patent Document 1 includes a floor cross member spanned between a side sill and a floor tunnel. The floor cross member is joined to the upper surface of the floor panel. On the floor cross member, left and right attached portions of the seat are attached. However, in the vehicle body known from Patent Document 1, since the floor cross member passes in the vehicle width direction, to increase the freedom of the feet of the occupant seated on the seat, that is, to improve the comfort of the passenger compartment, There is room for improvement.

  The vehicle body known from Patent Document 2 has a configuration in which left and right cross member mounting brackets and left and right seat mounting brackets are mounted on a floor panel. A first cross member is stretched over the left and right cross member mounting brackets and bolted. A second cross member is stretched over the left and right seat mounting brackets and bolted. Left and right attached portions of the seat are attached to the upper surface of the second cross member.

  However, in the vehicle body known from Patent Document 2, since the second cross member is lifted from the floor panel and passes in the vehicle width direction, the degree of freedom of the feet of the passenger seated on the seat is increased. There is room for improvement to enhance the comfort of the passenger compartment. Furthermore, since the second cross member is lifted from the floor panel, there is room for improvement in order to suppress running vibration transmitted from the frame of the vehicle body to the floor panel. As described above, the vehicle body known from Patent Document 2 requires further improvements for improving the rigidity and vibration control performance of the floor panel and enhancing the comfort of the passenger compartment.

Japanese Patent No. 3531476 Japanese Patent No. 4120073

  It is an object of the present invention to provide a technique capable of improving the rigidity and vibration control performance of a floor panel and enhancing the comfort of a passenger compartment.

According to the first aspect of the present invention, the left and right seat mounting portions that are integrally formed with the floor panel and for mounting the left and right mounted portions of the seat;
A floor reinforcing member which is superimposed on the upper surface of the floor panel and joined to the upper surface between the left and right seat mounting portions;
Including left and right seat mounting reinforcement members that are superimposed on the lower surfaces of the left and right seat mounting portions and joined to the lower surfaces;
At least a part of the joint portion of the floor reinforcement member to the floor panel and the joint portion of the left and right seat attachment reinforcement members to the left and right seat attachment portions overlap each other in the vehicle body vertical direction. A vehicle body structure is provided.

  According to a second aspect of the present invention, preferably, a groove portion is formed in the front-rear direction of the vehicle body on the upper surface of the floor panel, and a lower surface of the floor reinforcing member is formed along the groove portion. It is joined.

  As described in claim 3, preferably, the floor reinforcing member is formed with two ridges extending in the vehicle width direction along the front edge and the rear edge of the floor reinforcing member.

  According to a fourth aspect of the present invention, it is preferable to further include a wire fixing member for stopping a brake operation wire cable passing in the longitudinal direction of the vehicle body on the lower surface of the floor panel, and the wire fixing member is attached to the left and right seats. The reinforcing member has an overlapping portion that is overlapped with one of the sheet mounting reinforcing members, and the overlapping portion is joined to the lower surface of the floor panel together with the one sheet mounting reinforcing member.

  As described in claim 5, preferably, it further has a wire stopper member for stopping a brake operation wire cable passing in the longitudinal direction of the vehicle body on the lower surface of the floor panel, The portion in the vicinity of the position of the wire fixing member is a substantially flat surface that does not have the groove, and the lower surface of the floor reinforcing member is formed along the substantially flat surface, It is joined.

  In the invention which concerns on Claim 1, the upper surface of a floor panel is reinforced by joining a floor reinforcement member over the sheet | seat attachment part integral with the floor panel. The lower surfaces of the left and right seat mounting portions are reinforced by joining the left and right seat mounting reinforcing members. At least a portion of the joint portion of the floor reinforcing member to the floor panel and the joint portion of the left and right seat mounting reinforcement members to the left and right seat mounting portions overlap each other in the vehicle body vertical direction. For this reason, the floor panel in which the left and right seat mounting portions are integrally formed is continuously reinforced in the vehicle width direction by the floor reinforcing member and the left and right seat mounting reinforcing members. Therefore, the rigidity and vibration control performance of the floor panel can be improved.

  Furthermore, the left and right seat mounting portions are formed integrally with the floor panel, and the lower surface is reinforced by the left and right seat mounting reinforcing members. For this reason, the left and right seat mounting portions can sufficiently support the load acting from the seat. Moreover, in order to increase the strength of the left and right seat mounting portions, the portion protruding toward the passenger compartment can be eliminated as much as possible, so that the passenger compartment can be further secured and the occupant comfort can be improved. In particular, the degree of freedom of the feet of passengers seated on the seat is increased.

  In the invention according to claim 2, since the floor panel is formed with a groove portion in the front-rear direction of the vehicle body on the upper surface, the surface rigidity is increased, so that the vibration damping performance can be further improved. Moreover, the lower surface of the floor reinforcing member is formed along the groove and is joined to the groove. For this reason, the thickness of the floor reinforcing member can be reduced, and as a result, the portion protruding to the passenger compartment side can be eliminated as much as possible, so that the passenger compartment space can be further secured and the occupant comfort is improved. be able to. In particular, the degree of freedom of the feet of an occupant seated on the seat is further increased. In this way, the vibration damping performance can be further improved by increasing the rigidity of the floor panel while improving the comfortability of the occupant.

  In the invention according to claim 3, the floor reinforcing member is formed with two ridges extending in the vehicle width direction along the front edge and the rear edge of the floor reinforcing member. For this reason, the rigidity of a floor reinforcement member increases. As a result, the rigidity of the floor panel can be increased and the damping performance can be further increased.

  The invention according to claim 4 is configured such that the brake operation wire cable passing in the longitudinal direction of the vehicle body is stopped on the lower surface of the floor panel by the wire stopper member. In this case, the wire fixing member is joined to the lower surface of the floor panel together with one of the seat mounting reinforcing members. As a result, the reinforcing action of the one sheet mounting reinforcement member can be assisted by the wire fixing member. Accordingly, the rigidity of the floor panel can be increased and the vibration damping performance can be further improved.

  In the invention which concerns on Claim 5, the site | part vicinity of the position of a wire stopper member in the upper surface of a floor panel is a substantially flat surface which does not have a groove part. Since a portion of the floor panel near the position of the wire stopper member is a flat surface, the wire cable can be easily stopped by the wire stopper member. Furthermore, the lower surface of the floor reinforcing member is formed along the substantially flat surface and joined to the substantially flat surface. For this reason, even if it is the structure which fixes a wire cable to a floor panel by a wire stop member, a floor panel can be appropriately reinforced by a floor reinforcement member.

It is the perspective view which looked at the lower part of the center part of the vehicle body which concerns on this invention from upper direction. It is a bottom view of the lower part of the center part of the vehicle body shown by FIG. FIG. 3 is a cross-sectional view taken along line 3-3 in FIG. 1. FIG. 4 is a cross-sectional view taken along line 4-4 of FIG. FIG. 4 is a perspective view of the vehicle body around the right seat shown in FIG. 3 as viewed from above. FIG. 5 is an enlarged perspective view around the right seat shown in FIG. 4. FIG. 7 is a cross-sectional view taken along line 7-7 in FIG. 3. FIG. 8 is a cross-sectional view taken along line 8-8 in FIG. 3. FIG. 9 is a cross-sectional view taken along line 9-9 in FIG. 3. FIG. 2 is a perspective view of the left half of the vehicle body center portion shown in FIG. 1, with the floor panel omitted, viewed from the front upper side of the vehicle body. It is the perspective view which looked at the structure which is a left half of the vehicle body center part shown by FIG. FIG. 12 is a cross-sectional view taken along line 12-12 in FIG. FIG. 13 is a cross-sectional view taken along line 13-13 of FIG. FIG. 14 is a cross-sectional view taken along line 14-14 in FIG. 4. It is the perspective view which looked at the relationship between the left floor panel shown by FIG. 1, the left seat attachment reinforcement member, and the wire stopper from the vehicle body lower part. FIG. 16 is a cross-sectional view taken along line 16-16 of FIG.

  EMBODIMENT OF THE INVENTION The form for implementing this invention is demonstrated below based on an accompanying drawing.

  A vehicle body structure according to an embodiment will be described with reference to the drawings. "Front", "Rear", "Left", "Right", "Up", "Down" follow the direction seen from the driver, Fr is front, Rr is rear, Le is left, Ri is right , Up is the upper side, Dw is the lower side, and CL is the vehicle width center line.

  As shown in FIGS. 1 and 2, a vehicle body 11 of a vehicle 10 such as a passenger car is formed of a monocoque body, and substantially extends with respect to a vehicle width center line CL that extends in the vehicle longitudinal direction through the center of the vehicle 10 in the vehicle width direction. Therefore, it is formed symmetrically. The vehicle 10 includes, for example, three rows of seats (a front seat, a center seat, and a rear seat) in the front and rear of a vehicle compartment 12.

  The vehicle body 11 includes left and right side sills 21L and 21R, a floor tunnel 22, two front and rear cross members 23 and 24, and left and right floor panels 25L and 25R, which are located at the lower part of the middle part in the vehicle body front-rear direction.

  The left and right side sills 21L, 21R are located in the front-rear direction center of the vehicle body 11 and on both sides in the vehicle width direction, and extend in the vehicle body front-rear direction.

  As shown in FIGS. 1 to 4, the floor tunnel 22 is an integrally molded product of a plate material positioned in the center of the vehicle width and extending in the longitudinal direction of the vehicle body, and includes a tunnel main body 22a in the center and the tunnel main body 22a. The left and right tunnel reinforcing portions 22b and 22b are adjacent to each other.

  The tunnel main body 22a is located in the center of the vehicle width, and is formed in a substantially reverse U-section when viewed from the rear of the vehicle body. The left and right tunnel reinforcement portions 22b, 22b are portions where both edges at the lower end of the tunnel body 22a are folded back in a substantially U shape outward in the vehicle width direction when viewed from the rear of the vehicle body. On the outer edges of the left and right tunnel reinforcing portions 22b, 22b in the vehicle width direction, substantially flat flanges 22c, 22c are integrally formed, respectively. As is apparent from the above description, the overall shape of the floor tunnel 22 is generally a hat-shaped cross section when viewed from the rear of the vehicle body.

  An engine exhaust muffler 26 is disposed inside the floor tunnel 22. The muffler 26 is covered with a muffler cover 27 at least in the upper half.

  As shown in FIG. 1, the two cross members 23, 24 include a first cross member 23 located on the front side and a first cross member 23 located behind the first cross member 23 in the front-rear direction center of the vehicle body 11. Two cross members 24. The first and second cross members 23, 24 extend in the vehicle width direction and are spanned and joined to the left and right side sills 21L, 21R.

  The left and right floor panels 25L, 25R are stretched and joined between the left and right side sills 21L, 21R and the floor tunnel 22. That is, as shown in FIG. 3, both ends in the vehicle width direction of the right floor panel 25 are joined to the side surface of the right side sill 21R and the side surface of the tunnel body 22a. Further, the end of the right floor panel 25R on the vehicle width center side is joined to the right side surface of the tunnel main body 22a, and overlaps and is joined to the right flange 22c. The combined structure of the right tunnel reinforcing portion 22b and the right floor panel 25R is formed in a closed cross section when viewed from the rear of the vehicle body. The left floor panel 25L has the same configuration as the right floor panel 25R.

  As shown in FIG. 1, FIG. 3 and FIG. 4, it is preferable to employ a plate material having a damping effect such as a damping steel plate for the left and right floor panels 25L and 25R. On the upper surfaces 25a and 25a of the left and right floor panels 25L and 25R, a plurality of grooves 25b and 25b (beads 25b and 25b) elongated in the vehicle longitudinal direction are formed. The left and right floor panels 25L and 25R are formed with a plurality of reinforcing grooves 25b and 25b, so that the rigidity is enhanced and the vibration damping effect is enhanced.

  In the vehicle compartment 12, left and right seats 30L, 30R are arranged in an intermediate portion in the longitudinal direction of the vehicle body. The left and right seats 30L and 30R correspond to, for example, the front seat. The left and right seats 30L, 30R are attached to the left and right floor panels 25L, 25R in left and right spaces 28L, 28R surrounded by the left and right side sills 21L, 21R, the floor tunnel 22 and the two cross members 23, 24. .

  More specifically, the right seat 30 </ b> R has a leg portion 31 (attached portion 31) on the outer side in the vehicle width direction and a leg portion 32 (attached portion 32) on the vehicle width center side at the rear portion. The left seat 30L has the same configuration.

  The right floor panel 25R includes left and right seat mounting portions 42R and 41R located in the right space 28R. Similarly, the left floor panel 25L includes left and right seat attachment portions 42L and 41L located in the left space 28L. All these seat mounting portions 41R, 42R, 41L, and 42L are aligned in a row in the vehicle width direction.

Hereinafter, the four seat attachment portions 41R, 42R, 41L, and 42L are defined as follows.
(1) The seat mounting portion 41R located in the right space 28R and adjacent to the right side sill 21R is referred to as a “right outer seat mounting portion 41R”.
(2) The seat attachment portion 42R located in the right space 28R and adjacent to the floor tunnel 22 is referred to as a “right center side seat attachment portion 42R”.
(3) The seat attachment portion 41L located in the left space 28L and adjacent to the left side sill 21L is referred to as a “left outer seat attachment portion 41L”.
(4) The seat attachment portion 42L located in the left space 28L and adjacent to the floor tunnel 22 is referred to as a “left center side seat attachment portion 42L”.

  Next, the configuration of the right half of the vehicle body 11 will be described. As shown in FIGS. 1, 3, 5, and 6, the right outer seat attachment portion 41 </ b> R and the right center seat attachment portion 42 </ b> R are portions for attaching the left and right attached portions 32 and 31 of the right seat 30 </ b> R. Yes, it bulges from the upper surface 25a of the right floor panel 25R toward the vehicle compartment 12, that is, it is formed integrally with the right floor panel 25R.

  The right outer seat mounting portion 41R is formed from the inner side surface of the right side sill 21R to the center of the vehicle width over a predetermined length (a range in which the mounted portion 31 can be placed), and the upper surface is a flat surface. A reinforcing plate 43R is overlapped and joined to the lower surface of the right outer sheet mounting portion 41R. The mounted portion 31 on the outer side in the vehicle width direction of the right seat 30R is placed on the upper surface of the right outer seat mounting portion 41R, and fastened to the right outer seat mounting portion 41R together with the reinforcing plate 43R by bolts 44.

  As shown in FIGS. 2, 3, and 7, a right seat attachment reinforcing member 45 </ b> R is disposed directly below the right outer seat attachment portion 41 </ b> R and directly below the reinforcing plate 43. The right seat attachment reinforcing member 45R (hereinafter abbreviated as “outer lower member 45R”) is an elongated member extending from the lower surface of the right side sill 21R to the vehicle width center side end of the right outer seat attachment portion 41R. It is. The outer lower member 45R is formed in a substantially open hat-shaped cross section when viewed from the vehicle width direction, overlapped with the lower surface of the right outer seat attachment portion 41R, and joined to the lower surface. When viewed from the vehicle width direction, the opening width of the outer lower member 45R is substantially the same as the bulging width of the right outer seat mounting portion 41R.

  As shown in FIGS. 3 and 8, the right center side seat mounting portion 42R extends from the right side surface of the floor tunnel 22 to the right side sill 21R over a predetermined length (a range in which the mounted portion 32 can be placed). The upper surface is a flat surface. The reinforcing plate 46R is also overlapped and joined to the lower surface of the right center side seat mounting portion 42R. The reinforcing plate 46R on the vehicle width center side is appropriately referred to as “left seat mounting reinforcing member 46R” or “inner lower member 46R”. The mounted portion 32 on the vehicle width center side is placed on the upper surface of the right center side seat mounting portion 42R, and is fastened to the right center side seat mounting portion 42R together with the inner and lower members 46R by bolts 47.

  As shown in FIGS. 3 and 6, the right floor reinforcing member 50R is disposed between the right outer seat mounting portion 41R and the right center seat mounting portion 42R. That is, the right floor reinforcing member 50R is overlapped with and joined to the upper surface 25a of the right floor panel 25R across the left and right seat mounting portions 42R and 41R.

  In more detail with reference to FIG. 9 as well, the right floor reinforcing member 50R (hereinafter abbreviated as “upper member 50R”) is a folded product of a plate material, and is abbreviated when viewed from the vehicle width direction. It is formed in a lower open hat-like cross section.

  That is, the upper member 50R includes a front flange 51 that overlaps the upper surface 25a of the right floor panel 25R, a vertical plate-like front plate 52 that extends upward from the rear end of the front flange 51 and faces the front of the vehicle body, A horizontal plate-like top plate 53 extending rearward from the upper end of the front plate 52, a vertical plate-like rear plate 54 extending downward from the rear end of the top plate 53 and facing the rear of the vehicle body, and the rear plate 54 This is an integrally molded product comprising a rear flange 55 extending rearward from the lower end.

  The edge 56 between the front plate 52 and the top plate 53 is referred to as a “front edge 56”. An edge 57 between the top plate 53 and the rear plate 54 is referred to as a “rear edge 57”. The top plate 53 of the upper member 50R is formed with two ridges 58, 58 extending in the vehicle width direction along the front edge 56 and the rear edge 57, respectively. The two ridges 58, 58 bulge upward from the top plate 53 and extend between both ends in the vehicle width direction. For this reason, the rigidity of the upper member 50R is increased. As a result, the rigidity of the floor panel 25 can be increased and the vibration damping performance can be further increased.

  The front flange 51 and the rear flange 55 are overlapped with and joined to the upper surface 25a of the right floor panel 25R. As a result, the combined structure of the right floor panel 25R and the upper member 50R is formed in a substantially rectangular closed cross section when viewed from the vehicle width direction.

  The lower surface of the upper member 50R is formed in a concavo-convex shape along the groove portions 25b, 25b formed on the upper surface 25a of the right floor panel 25R, and is joined to the inner surfaces of the groove portions 25b, 25b. That is, the front flange 51, the lower surface of the front plate 52, the lower surface of the rear plate 54, and the rear flange 55 are formed to match the shape of the upper surface 25a of the right floor panel 25R and the shapes of the grooves 25b and 25b. ing. For this reason, the height from the upper surface 25a of the right floor panel 25R to the top plate 53, that is, the thickness of the upper member 50R can be reduced by the groove depth of the groove portions 25b, 25b.

  The joints 50a and 50b at both ends in the vehicle width direction of the upper member 50R with respect to the right floor panel 25R are referred to as “both joints 50a and 50b of the upper member 50R”. A joint 45a (see FIG. 3) of the outer lower member 45R with respect to the right outer sheet attachment portion 41R is referred to as an “outer joint 45a”. The joint portion 46a of the inner lower member 46R with respect to the right center side seat attachment portion 42R is referred to as an “inner joint portion 46a”. The joint portions 50a and 50b at both ends of the upper member 50R at least partially overlap the outer joint portion 45a and the inner joint portion 46a, respectively, in the vehicle body vertical direction.

  For this reason, the right floor panel 25R in which the left and right seat mounting portions 42R, 41R are integrally formed is continuously reinforced in the vehicle width direction by the upper member 50R, the outer lower member 45R, and the inner lower member 46R. The Therefore, the rigidity and vibration control performance of the right floor panel 25R can be improved.

  Furthermore, the left and right seat mounting portions 42R, 41R are integrally formed with the right floor panel 25R, and the lower surface is reinforced by the outer lower member 45R and the inner lower member 46R. For this reason, the left and right seat mounting portions 42R and 41R can sufficiently support the load acting from the right seat 30R.

  Moreover, in order to increase the strength of the left and right seat mounting portions 42R, 41R, the portion protruding toward the passenger compartment 12 can be eliminated as much as possible, so that the space of the passenger compartment 12 can be further secured and the comfortability of the passengers can be increased. Can be increased. In particular, the degree of freedom of the feet of the occupant seated in the right central seat (not shown) located directly behind the right seat 30R is increased.

  Next, the configuration of the left half of the vehicle body 11 will be described. The mounting structure of the left and right mounted portions 32, 31 of the left seat 30L is substantially (basically) the same structure as the mounting structure of the left and right mounted portions 32, 31 of the right seat 30R, so only an overview is provided. Will be explained.

  As shown in FIGS. 1, 4, 10, and 11, the left outer seat attachment portion 41 </ b> L and the left center seat attachment portion 42 </ b> L are portions for attaching the left and right attached portions 32 and 31 of the left seat 30 </ b> L. Yes, it bulges from the upper surface 25a of the left floor panel 25L toward the vehicle compartment 12, that is, it is formed integrally with the left floor panel 25L.

  The left outer seat mounting portion 41L is formed from the inner side surface of the left side sill 21L to the center of the vehicle width over a predetermined length (a range in which the mounted portion 31 can be placed), and the upper surface is a flat surface. A reinforcing plate 43L is overlapped and joined to the lower surface of the left outer sheet attachment portion 41L. The mounted portion 31 on the outer side in the vehicle width direction of the left seat 30L is placed on the upper surface of the left outer seat mounting portion 41L, and is fastened to the left outer seat mounting portion 41L together with a reinforcing plate 43L by a bolt (not shown). ing.

  As shown in FIGS. 2, 4, and 12, a seat attachment reinforcing member 45 </ b> L is disposed directly below the left outer seat attachment portion 41 </ b> L and directly below the reinforcement plate 43 </ b> L. The seat attachment reinforcing member 45L (hereinafter abbreviated as “outer lower member 45L”) is an elongated member that extends from the lower surface of the left side sill 21L to the vehicle width center side end of the left outer seat attachment portion 41L. . The outer lower member 45L is formed to have a substantially open hat-like cross section (see FIG. 10) when viewed from the vehicle width direction, overlapped with the lower surface of the left outer seat attachment portion 41L, and joined to the lower surface. . When viewed from the vehicle width direction, the opening width of the outer lower member 45L is substantially the same as the bulging width of the left outer seat attachment portion 41L.

  As shown in FIGS. 4 and 13, the left center side seat mounting portion 42L extends from the left side surface of the floor tunnel 22 toward the left side sill 21L over a predetermined length (a range in which the mounted portion 32 can be placed). The upper surface is a flat surface. The reinforcing plate 46L is also overlapped and joined to the lower surface of the left center side seat attachment portion 42L. The reinforcing plate 46L on the vehicle width center side is appropriately referred to as a “left seat mounting reinforcing member 46L” or an “inner lower member 46L”. The mounted portion 32 on the vehicle width center side is placed on the upper surface of the left center side seat mounting portion 42L, and is fastened to the left center side seat mounting portion 42L together with the inner and lower members 46L by bolts (not shown). .

  As shown in FIGS. 4, 10, and 11, the left floor reinforcing member 50 </ b> L is disposed between the left outer seat attachment portion 41 </ b> L and the left center seat attachment portion 42 </ b> L. That is, the left floor reinforcing member 50L is overlapped with and joined to the upper surface 25a of the left floor panel 25L across the left and right seat mounting portions 42L and 41L.

  In more detail with reference to FIG. 14 as well, the left floor reinforcing member 50L (hereinafter, abbreviated as “upper member 50L”) is a folded product of a plate material, and is abbreviated when viewed from the vehicle width direction. It is formed in a lower open hat-like cross section. The left upper member 50L has substantially the same cross-sectional structure as the right upper member 50R (see FIG. 9), and a description thereof will be omitted.

  The front flange 51 and the rear flange 55 overlap the upper surface 25a of the left floor panel 25L and are joined to the upper surface. As a result, the combined structure of the left floor panel 25L and the upper member 50L is formed in a substantially rectangular closed cross section when viewed from the vehicle width direction.

  The lower surface of the upper member 50L is formed in a concavo-convex shape along the groove portions 25b and 25b formed on the upper surface 25a of the left floor panel 25L, and is joined to the inner surfaces of the groove portions 25b and 25b. That is, the front flange 51, the lower surface of the front plate 52, the lower surface of the rear plate 54, and the rear flange 55 are formed so as to match the shape of the upper surface 25a of the left floor panel 25L and the shapes of the grooves 25b and 25b. ing. For this reason, the height from the upper surface 25a of the left floor panel 25L to the top plate 53, that is, the thickness of the upper member 50L can be reduced by the groove depth of the groove portions 25b, 25b.

  The joint portions 50a and 50b at both ends in the vehicle width direction of the upper member 50L with respect to the left floor panel 25L are referred to as “both end joint portions 50a and 50b of the upper member 50L”. The joint portion 45a of the outer lower member 45L with respect to the left outer sheet attachment portion 41L is referred to as an “outer joint portion 45a”. The joint portion 46a of the inner lower member 46L with respect to the left center side seat attachment portion 42L is referred to as an “inner joint portion 46a”. The both end joint portions 50a and 50b of the upper member 50L at least partially overlap the outer joint portion 45a and the inner joint portion 46a, respectively, in the vertical direction of the vehicle body.

  Therefore, the left floor panel 25L in which the left and right seat mounting portions 41L and 42L are integrally formed is continuously reinforced in the vehicle width direction by the upper member 50L, the outer lower member 45L, and the inner lower member 46L. The Accordingly, the rigidity and vibration control performance of the left floor panel 25L can be improved.

  Furthermore, the left and right seat mounting portions 41L and 42L are integrally formed with the left floor panel 25L, and the lower surface is reinforced by the outer lower member 45L and the inner lower member 46L. For this reason, the left and right seat mounting portions 41L and 42L can sufficiently support the load acting from the left seat 30L.

  Moreover, in order to increase the strength of the left and right seat mounting portions 41L, 42L, the portion protruding toward the passenger compartment 12 can be eliminated as much as possible, so that the space of the passenger compartment 12 can be further secured and the occupant's comfortability can be increased. Can be increased. In particular, the degree of freedom of the feet of the occupant seated on the left central seat (not shown) located directly behind the left seat 30L is increased.

  As shown in FIGS. 10 and 11, on the left side of the vehicle body 11, a plurality of brake operation wire cables 61, 61 pass in the vehicle longitudinal direction. The plurality of wire cables 61 and 61 are members that transmit an operating force of a brake pedal and a parking brake lever (not shown) provided in the vehicle compartment 12 to a brake (not shown).

  The left floor panel 25L is formed with cable insertion holes 25c and 25c that pass through the position immediately before the upper member 50L. The front half of the plurality of wire cables 61, 61 in the longitudinal direction extends to the cable insertion holes 25c, 25c along the upper surface 25a of the left floor panel 25L, and passes through the cable insertion holes 25c, 25c to the left floor. The panel 25L extends downward. After passing through the cable insertion holes 25c, 25c, the rear half portions of the plurality of wire cables 61, 61 are along the lower surface of the left floor panel 25L.

  15 and 16, the plurality of wire cables 61 and 61 are fixed to the lower surface of the left floor panel 25L by a wire fixing member 62. The wire fixing member 62 has an overlapping portion 62a that overlaps one of the left and right seat mounting reinforcement members 45L and 46L, that is, the left seat mounting reinforcement member 45L (left outer lower member 45L). The overlapping portion 62a is joined to the lower surface of the left floor panel 25L together with the left seat mounting reinforcing member 45L.

  In this case, the wire fixing member 62 is joined to the lower surface of the left floor panel 25L together with the left seat mounting reinforcing member 45L. As a result, the reinforcing action of the upper member 50L can be assisted by the wire fixing member 62 via the left seat attachment reinforcing member 45L. Therefore, the rigidity of the left floor panel 25L can be increased, and the vibration control performance can be further increased.

  A portion of the upper surface 25a of the left floor panel 25L in the vicinity of the position of the wire fixing member 62 is a substantially flat surface not having the groove portions 25b and 25b. The lower surface of the upper member 50L is formed along the flat portion (substantially flat surface) of the upper surface 25a of the left floor panel 25L, and is joined to the substantially flat surface.

  Since the portion of the left floor panel 25L in the vicinity of the position of the wire stopper member 62 is a flat surface, the wire cables 61 and 61 can be easily stopped by the wire stopper member 62. Further, the lower surface of the upper member 50L is formed along a substantially flat surface and is joined to the substantially flat surface. For this reason, even if it is the structure which stops the wire cables 61 and 61 to the left floor panel 25L by the wire stopper member 62, the left floor panel 25L can be appropriately reinforced by the upper member 50L.

  The vehicle body structure of the present invention is suitable for use in a portion of the vehicle body 11 of the vehicle 10 such as a passenger car where the left and right seats 30L and 30R are attached.

  DESCRIPTION OF SYMBOLS 10 ... Vehicle, 11 ... Vehicle body, 25L, 25R ... Floor panel, 25a ... Top surface, 25b ... Groove part, 25c ... Cable insertion hole, 30L, 30R ... Sheet, 31, 32 ... Mounted part, 41L, 41R, 42L, 42R ... Seat attachment part, 45L, 45R, 46L, 46R ... Sheet attachment reinforcement member, 45a, 46a ... Joint part of sheet attachment reinforcement member to sheet attachment part, 50L, 50R ... Floor reinforcement member, 50a, 50b ... Floor to floor panel Joining portion of reinforcing member, 56 ... front edge, 57 ... rear edge, 58 ... convex line, 61 ... wire cable for brake operation, 62 ... wire stopper member, 62a ... overlapping portion.

Claims (5)

The left and right seat mounting portions that are formed integrally with the floor panel and for mounting the left and right mounted portions of the seat,
A floor reinforcing member which is superimposed on the upper surface of the floor panel and joined to the upper surface between the left and right seat mounting portions;
Including left and right seat mounting reinforcement members that are superimposed on the lower surfaces of the left and right seat mounting portions and joined to the lower surfaces;
At least a part of the joint portion of the floor reinforcement member to the floor panel and the joint portion of the left and right seat attachment reinforcement members to the left and right seat attachment portions overlap each other in the vehicle body vertical direction. Body structure. On the upper surface of the floor panel, a groove is formed in the longitudinal direction of the vehicle body,
2. The vehicle body structure according to claim 1, wherein a lower surface of the floor reinforcing member is formed along the groove and joined to the groove.   The said floor reinforcement member is formed with two ridges extending in the vehicle width direction along the front edge and the rear edge of the floor reinforcement member, respectively. Body structure described. A wire stopper member for stopping a brake operation wire cable passing in the longitudinal direction of the vehicle body on the lower surface of the floor panel;
The wire fastening member has an overlapping portion that is overlapped with one of the left and right seat mounting reinforcement members.
The vehicle body structure according to any one of claims 1 to 3, wherein the overlapping portion is joined to the lower surface of the floor panel together with the one sheet mounting reinforcement member. A wire stopper member for stopping a brake operation wire cable passing in the longitudinal direction of the vehicle body on the lower surface of the floor panel;
A portion of the upper surface of the floor panel in the vicinity of the position of the wire fixing member is a substantially flat surface not having the groove portion,
The vehicle body structure according to claim 2, wherein a lower surface of the floor reinforcing member is formed along the substantially flat surface and joined to the substantially flat surface.

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