CN213323376U - Floor tunnel structure of vehicle body - Google Patents
Floor tunnel structure of vehicle body Download PDFInfo
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- CN213323376U CN213323376U CN202021322486.8U CN202021322486U CN213323376U CN 213323376 U CN213323376 U CN 213323376U CN 202021322486 U CN202021322486 U CN 202021322486U CN 213323376 U CN213323376 U CN 213323376U
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- vehicle body
- fixing portion
- floor
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Abstract
The utility model provides a floor access structure of automobile body. A floor tunnel structure of a vehicle body is provided with: a floor tunnel (2) that is provided in the center of the floor of the vehicle body in the vehicle width direction and extends in the front-rear direction of the vehicle body; and a reinforcing bracket (3) disposed on the upper surface (2a) of the floor tunnel (2), the reinforcing bracket (3) having: a first fixing section (37) attached to the upper surface (2a) of the floor tunnel (2); a second fixing section (38) provided at a position rearward of the first fixing section (37) in the front-rear direction and rightward in the vehicle width direction; and a third fixing section (39) provided at a position rearward of the first fixing section (37) in the front-rear direction and leftward in the vehicle width direction. An imaginary line (T) connecting the first fixing section (37), the second fixing section (38), and the third fixing section (39) is formed in a truss shape when viewed from the top-bottom direction of the vehicle body.
Description
Technical Field
The utility model relates to a floor access structure of automobile body.
Background
Conventionally, a floor tunnel structure in which a floor tunnel is provided at a center portion of a vehicle body floor in a vehicle width direction has been disclosed. The floor tunnel suppresses deformation of the vehicle body floor with respect to a load input in the front-rear direction of the vehicle body. In such a floor tunnel structure, various techniques have been proposed to protect vehicle-mounted components such as a battery disposed in the vicinity of the floor tunnel from a load by increasing the strength of the floor tunnel.
For example, patent document 1 (japanese patent No. 4680834) discloses a vehicle floor structure including: a battery disposed on an upper side of a vehicle body floor; a cross member for fixing the front part of the battery; another cross member disposed forward of the one cross member; and a load bearing member connecting between the one cross member and the other cross member. The load support members are provided on both sides in the vehicle width direction of a floor tunnel formed in a vehicle body floor. According to the technique described in patent document 1, since a load is transmitted between one cross member and the other cross member via the load support member, deformation of the battery installation portion in which the battery is installed can be suppressed.
SUMMERY OF THE UTILITY MODEL
[ SUMMARY OF THE INVENTION ] A method for producing a semiconductor device
[ problem to be solved by the utility model ]
However, in the technique described in patent document 1, since the load support members having closed cross sections are disposed on both sides of the floor tunnel in the vehicle width direction, the floor tunnel structure including the floor tunnel and the load support members is large in the vehicle width direction. This may narrow the space under the feet of the occupant in the vehicle interior.
The utility model aims to provide a floor access structure of automobile body of suppressing maximization and having improved floor access's intensity.
[ MEANS FOR solving PROBLEMS ] A method for solving the problems
The present invention provides a floor passage structure of a vehicle body (for example, a floor passage structure 1 in an embodiment), which is characterized in that: a floor tunnel (for example, a floor tunnel 2 in the embodiment) that is provided at a center portion in a vehicle width direction in a floor of a vehicle body and extends in a front-rear direction of the vehicle body; a reinforcing bracket (e.g., reinforcing bracket 3 in the embodiment) disposed on an upper surface (e.g., upper surface 2a in the embodiment) of the floor tunnel, the reinforcing bracket having: a first fixing portion (e.g., a first fixing portion 37 in the embodiment) mounted to the upper surface of the floor tunnel; a second fixed portion (for example, a second fixed portion 38 in the embodiment) provided on the one side in the front-rear direction and the one side in the vehicle width direction with respect to the first fixed portion; and a third fixing portion (for example, a third fixing portion 39 in the embodiment) provided on one side in the front-rear direction and the other side in the vehicle width direction with respect to the first fixing portion.
In an example of the floor tunnel structure of the vehicle body, the reinforcement bracket may include: a base portion (e.g., the base portion 31 in the embodiment) fixed to a central portion of the floor tunnel in the vehicle width direction; and a branch portion (for example, a branch portion 32 in the embodiment) that extends in two branches from the base portion, the first fixing portion being provided at the base portion, and the second fixing portion and the third fixing portion being provided at the branch portion.
In an example of the floor tunnel structure of the vehicle body, the branch portion may be formed in a V shape that is inclined outward in the vehicle width direction as going from the base portion toward the rear in the front-rear direction.
In an example of the floor tunnel structure of the vehicle body, the floor tunnel structure of the vehicle body may include a lining (for example, a lining 4 in the embodiment) attached to a lower surface of the floor tunnel and extending in the vehicle width direction along the lower surface of the floor tunnel, and the lining may be disposed at a position overlapping the second fixing portion and the third fixing portion when viewed in the vertical direction of the vehicle body.
In an example of the floor tunnel structure of the vehicle body, a bead (for example, a bead 40 in the embodiment) extending in the vehicle width direction may be formed on the lining panel.
In an example of the floor tunnel structure of the vehicle body, the floor tunnel may include a front member (for example, a front member 10 in the embodiment) provided forward in the front-rear direction and a rear member (for example, a rear member 20 in the embodiment) provided rearward in the front-rear direction, a connecting portion (for example, a connecting portion 28 in the embodiment) connecting the front member and the rear member may be disposed between the first fixing portion, the second fixing portion, and the third fixing portion of the reinforcement bracket, and a virtual line (for example, a virtual line T in the embodiment) connecting the first fixing portion, the second fixing portion, and the third fixing portion may be formed in a truss shape when viewed from a top-bottom direction of the vehicle body.
In an example of the floor tunnel structure of the vehicle body, the floor tunnel may have a curved portion (for example, a curved portion 29 in the embodiment) curved such that one end in the front-rear direction is positioned above the other end, the reinforcement bracket may be disposed across the curved portion, and a radius of curvature of the reinforcement bracket (for example, a radius of curvature r2 in the embodiment) as viewed in the vehicle width direction may be larger than a radius of curvature of the curved portion (for example, a radius of curvature r1 in the embodiment).
In an example of the floor tunnel structure of the vehicle body, the floor tunnel structure of the vehicle body may include a cross member (for example, a cross member 5 in the embodiment) provided below the floor tunnel and extending in the vehicle width direction, and the cross member may be disposed at a position overlapping with the reinforcement bracket in the front-rear direction.
In an example of the floor tunnel structure of the vehicle body, the floor tunnel may have a raised portion (for example, a raised portion 30 in the embodiment) formed such that the upper surface is positioned upward as going to the one side in the front-rear direction, and the second fixing portion and the third fixing portion may be attached to the raised portion.
[ Utility model effect ] is provided
According to the utility model discloses a floor access structure of automobile body of scheme, owing to at the upper surface configuration of floor access along the enhancement bracket of the fore-and-aft direction extension of automobile body, consequently can strengthen floor access through strengthening the bracket. This can improve the strength of the floor tunnel against a load in the front-rear direction of the vehicle body. The reinforcing bracket has a first fixing portion, a second fixing portion, and a third fixing portion, and the second fixing portion and the third fixing portion are disposed at positions outside of the first fixing portion in the vehicle width direction. The second fixing portion and the third fixing portion are provided at positions separated from the first fixing portion in the front-rear direction. Thus, the reinforcing bracket fixes the first fixing portion, the second fixing portion, and the third fixing portion to the floor tunnel in a truss-like arrangement when viewed in the vertical direction. Therefore, when a load in the front-rear direction is input to the floor tunnel, the load is transmitted from the first fixing portion to the second fixing portion and the third fixing portion, and thus the load can be transmitted to the ridge line located on the vehicle width direction outer side of the floor tunnel via the reinforcement bracket. In this way, since the load can be transmitted to the ridge line of the floor tunnel having high rigidity, sufficient rigidity of the floor tunnel can be ensured, and deformation of the floor tunnel can be suppressed.
The reinforcement bracket is provided on the upper surface of the floor tunnel, and therefore the floor tunnel structure including the floor tunnel and the reinforcement bracket can be suppressed from being large in the vehicle width direction. This can maintain a wide space under the feet of the occupant. Further, a dimension of a portion of the reinforcement bracket where the first fixing portion is provided in the vehicle width direction is smaller than a width dimension of the floor tunnel in the vehicle width direction. Therefore, the peripheral member such as the tunnel cover can be connected to the portion of the upper surface of the floor tunnel where the reinforcing bracket is not disposed. Therefore, the space around the floor tunnel can be effectively utilized.
Therefore, the floor tunnel structure of the vehicle body can be provided in which the strength of the floor tunnel is improved while suppressing the increase in size.
According to one example of the floor tunnel structure of the vehicle body, the reinforcement bracket includes a base portion and a branch portion, the first fixing portion is provided at the base portion, and the second fixing portion and the third fixing portion are provided at the branch portion. Therefore, the load is transmitted from the base portion to the branch portion, and the load can be transmitted more effectively to the ridge line of the floor tunnel via the reinforcement bracket. Further, since the branch portion is provided along the path of the load from the first fixing portion toward the second fixing portion and the third fixing portion, the load can be efficiently transmitted with a minimum configuration. Therefore, the reinforcing bracket can be miniaturized.
According to one example of the floor tunnel structure of the vehicle body, the branch portion is formed in a V shape that is inclined outward in the vehicle width direction as going rearward in the front-rear direction from the base portion. This allows the load input from the front of the floor tunnel to be gradually transmitted to the outside in the vehicle width direction along the branch portion. Therefore, the load input from the front can be stably transmitted to the ridge line of the floor tunnel.
According to one example of the floor tunnel structure of the vehicle body, a lining plate extending in the vehicle width direction is provided on the lower surface of the floor tunnel. Thus, when a load is input to the floor tunnel, the floor tunnel can be prevented from spreading and flattening in the vehicle width direction. Here, for example, when a load is input from the front of the floor tunnel, an upward moment is generated at the front end portion of the floor tunnel, and the floor tunnel may be bent downward. In this case, the wider the angle between the upper surface and the side surface of the floor tunnel becomes, the flatter the floor tunnel becomes, the less the moment-supporting force of the side surface decreases, and the more easily the floor tunnel is bent. In contrast, according to the floor tunnel structure of the present configuration, since the liner plate suppresses flattening of the floor tunnel, the supporting strength of the tunnel against the moment in the vertical direction can be improved. Therefore, the strength of the floor tunnel against load can be improved.
According to an example of the floor tunnel structure of the vehicle body, the reinforcing beads extending in the vehicle width direction are formed on the lining panel, and therefore the strength of the lining panel can be increased. Therefore, the strength of the floor tunnel to which the lining board is attached can be further improved.
According to an example of the floor tunnel structure of the vehicle body, the reinforcement bracket is disposed across the connecting portion that connects the front member and the rear member, and therefore the rigidity of the connecting portion can be ensured by attaching the reinforcement bracket. Since the imaginary line connecting the first fixing portion, the second fixing portion, and the third fixing portion is formed in a truss shape when viewed from the vertical direction, the load input in the front-rear direction can be transmitted along the ridge line of the floor tunnel. Since the reinforcement bracket is fixed to the floor tunnel by fastening, the reinforcement bracket can be easily attached to and detached from the floor tunnel as compared with, for example, welding. Further, for example, the reinforcing bracket can be attached after the front member and the rear member are connected, so that workability in manufacturing can be improved.
According to one example of the floor tunnel structure of the vehicle body, the floor tunnel has a curved portion, and the reinforcement bracket is disposed across the curved portion. Since the bending portion has lower rigidity against vertical moment than other portions, the reinforcing bracket is disposed at the bending portion having lower rigidity, thereby effectively suppressing deformation of the floor tunnel. Since the curvature of the reinforcing bracket as viewed in the vehicle width direction is smaller than the curvature of the curved portion, the load acting on the peripheral edge of the curved portion can be transmitted to the reinforcing bracket, and the stress can be dispersed. This can further suppress deformation of the bent portion of the floor tunnel.
According to one example of the floor tunnel structure of the vehicle body, a cross member extending in the vehicle width direction is provided at a position overlapping the reinforcement bracket in the front-rear direction. This enables the load input to the floor tunnel to be dispersed and transmitted to the reinforcement bracket and the cross member. Therefore, deformation of the floor tunnel can be suppressed.
According to an example of the floor tunnel structure of the vehicle body, the second fixing portion and the third fixing portion are attached to the raised portion of the floor tunnel, and therefore, the raised portion can receive the load transmitted from the reinforcement bracket to the floor panel via the second fixing portion and the third fixing portion. Since the arch portion is formed such that the upper surface is positioned upward as it goes to one side in the front-rear direction, the load input from the reinforcement bracket can be received by the surface intersecting the input direction of the load. Therefore, the load input from the reinforcement bracket can be effectively transmitted to one of the front and rear directions of the floor tunnel, and the rigidity of the arch portion can be improved, thereby improving the connection strength between the arch portion and the reinforcement bracket.
Drawings
Fig. 1 is a perspective view of a floor tunnel structure of an embodiment.
Fig. 2 is a sectional view taken along line II-II of fig. 1.
Fig. 3 is a sectional view taken along the line III-III of fig. 1.
Description of the symbols:
1: a floor tunnel structure; 2: a floor tunnel; 2 a: an upper surface (of the floor tunnel); 3: a reinforcing bracket; 4: a liner plate; 5: a cross beam; 9: a floor; 10: a front member; 20: a rear member; 28: a connecting portion; 29: a bending section; 30: an arching portion; 31: a base; 32: a branching section; 37: a first fixed part; 38: a second fixed part; 39: a third fixed part; 40: reinforcing ribs; t: an imaginary line; r 1: the radius of curvature of the curved portion; r 2: the radius of curvature of the bracket is reinforced.
Detailed Description
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
(embodiment mode)
(floor tunnel structure of vehicle body)
Fig. 1 is a perspective view of a floor tunnel structure 1 of a vehicle body according to an embodiment.
The floor tunnel structure 1 of the vehicle body (hereinafter simply referred to as the floor tunnel structure 1) includes a floor panel 8, a reinforcement bracket 3, a lining 4 (see fig. 3), and a cross member 5 (see fig. 2). In the following description, the directions in the front-rear direction, the left-right direction (vehicle width direction), and the up-down direction are respectively aligned with the directions in the front-rear direction, the left-right direction, and the up-down direction of the vehicle body. Further, a direction FR indicated by an arrow in the drawing indicates the front of the vehicle body.
(floor panel)
The floor panel 8 includes a front member 10 and a rear member 20. Further, a floor tunnel 2 having a long side in the front-rear direction of the vehicle body is provided at a center portion of the floor panel 8 in the vehicle width direction. The floor tunnel 2 is formed by raising the center portion of the floor panel 8 in the vehicle width direction upward.
The front member 10 is disposed forward in the front-rear direction, and forms a floor of the vehicle body and a front portion of the floor tunnel 2. The front member 10 is formed in a hat shape that opens downward when viewed from the front-rear direction by bending a plate-shaped member. The front member 10 has a reduced projecting height as it goes to the rear in the front-rear direction. Specifically, the front member 10 has a first upper portion 11, a first right side portion 12, a first right floor 13, a first left side portion 14, and a first left floor 15.
The first upper portion 11 forms an upper surface 2a of the floor tunnel 2. The first upper portion 11 is formed in a rectangular plate shape that is inclined downward from the front toward the rear.
The first right side portion 12 is connected to the right end of the first upper portion 11 and hangs down from the right end of the first upper portion 11. The first right side portion 12 forms the right side face of the floor tunnel 2. The height of the first right side portion 12 in the up-down direction decreases toward the rear. A first right ridge 16 extending in the front-rear direction is provided at the boundary between the first upper portion 11 and the first right side portion 12.
The first right floor 13 extends rightward from the lower end of the first right side portion 12. The first right floor 13 forms a floor of the vehicle cabin at a position on the right side of the floor tunnel 2.
The first left side portion 14 is connected to the left end of the first upper portion 11 and hangs down from the left end of the first upper portion 11. The first left side portion 14 forms a left side face of the floor tunnel 2. The height of the first left side portion 14 in the up-down direction decreases as going rearward. A first left ridge 17 extending in the front-rear direction is provided at the boundary between the first upper portion 11 and the first left side portion 14.
The first left floor panel 15 extends leftward from the lower end of the first left side portion 14. The first left floor 15 forms a floor of the vehicle cabin on the left side of the floor tunnel 2.
The rear member 20 is disposed rearward in the front-rear direction of the front member 10. The rear member 20 forms the floor of the vehicle body and a rear portion of the floor tunnel 2. The front end of the rear member 20 is connected to the rear end of the front member 10. The rear member 20 is formed in a hat shape that opens downward when viewed from the front-rear direction by bending a plate-shaped member. The rear member 20 has a protruding height lower than that of the front member 10. Specifically, the rear member 20 has a second upper portion 21, a second right side portion 22, a second right floor 23, a second left side portion 24, and a second left floor 25.
The second upper portion 21 forms an upper surface 2a of the floor tunnel 2. The second upper portion 21 is formed in a substantially horizontal rectangular plate shape. The front end of the second upper portion 21 is connected to the rear end of the first upper portion 11.
The second right side portion 22 is connected to the right end of the second upper portion 21 and hangs downward from the right end of the second upper portion 21. The second right side portion 22 forms the right side face of the floor tunnel 2. A second right ridge 26 extending in the front-rear direction is provided at the boundary between the second upper portion 21 and the second right side portion 22. The first right ridge 16 is formed continuously with the second right ridge 26.
The second right floor 23 extends rightward from the lower end of the second right side portion 22. The second right floor 23 forms a floor of the vehicle cabin at a position on the right side of the floor tunnel 2.
The second left side portion 24 is connected to the left end of the second upper portion 21 and hangs downward from the left end of the second upper portion 21. The second left side portion 24 forms a left side face of the floor tunnel 2. A second left ridge line 27 extending in the front-rear direction is provided at the boundary between the second upper portion 21 and the second left side portion 24. The first left ridge 17 is formed continuously with the second left ridge 27.
The second left floor 25 extends leftward from the lower end of the second left side portion 24. The second left floor 25 forms a floor of the vehicle cabin on the left side of the floor tunnel 2.
A connecting portion 28 is provided between the front member 10 and the rear member 20. In the connecting portion 28, the front member 10 overlaps with a part of the rear member 20 in the plate thickness direction, and the front member 10 and the rear member 20 are joined by a sealing material.
Further, the floor tunnel 2 thus formed by the front member 10 and the rear member 20 has a curved portion 29 and a raised portion 30.
Fig. 2 is a sectional view taken along line II-II of fig. 1.
The bent portion 29 is provided from the front end portion of the rear member 20 to the front member 10. The bent portion 29 is bent in such a manner that the front end of the floor tunnel 2 is located above with respect to the rear end. Specifically, the curved portion 29 is curved so that the upper surface 2a of the floor tunnel 2 including the first upper portion 11 and the second upper portion 21 protrudes downward when viewed in the vehicle width direction.
The arch portion 30 is provided at a position rearward of the bent portion 29. The raised portion 30 is provided integrally with the second upper portion 21 of the rear member 20. The raised portion 30 is formed such that the upper surface 2a of the floor tunnel 2 is inclined upward toward the rear with respect to the second upper portion 21 formed substantially horizontally. In the present embodiment, the pair of raised portions 30 is provided on both sides in the vehicle width direction with respect to the center portion in the vehicle width direction of the second upper portion 21 of the floor tunnel 2.
(Reinforcement bracket)
Returning to fig. 1, the reinforcement bracket 3 is disposed on the upper surface 2a of the floor tunnel 2. The reinforcing bracket 3 has a base portion 31 and a branch portion 32.
The base 31 is provided on the first upper part 11 of the front member 10. The base portion 31 is provided at the center portion in the vehicle width direction of the first upper portion 11. The base 31 is formed in a plate shape extending in the front-rear direction. Ribs rising upward are integrally formed at both ends of the base portion 31 in the vehicle width direction. A first fixing portion 37 connected to the front member 10 of the floor tunnel 2 is provided at a central portion of the base portion 31 in the vehicle width direction. The first fixing portions 37 are arranged in a row of 2 in the front-rear direction. The floor tunnel 2 and the reinforcement bracket 3 are fastened and fixed to each other by a fastening member such as a bolt in the first fixing portion 37.
The branch portion 32 is connected to the rear end of the base portion 31. The branch portion 32 extends from the base portion 31 in two branches. The branch portion 32 is formed in a V shape inclined outward in the vehicle width direction as going rearward in the front-rear direction from the base portion 31. Specifically, the branch portion 32 has a right branch portion 33 and a left branch portion 34. The right branch portion 33 is inclined to the right in the vehicle width direction as going rearward in the front-rear direction from the base portion 31. The left branch portion 34 is inclined to the left in the vehicle width direction as going rearward in the front-rear direction from the base portion 31. Each branch portion 32 is formed in a plate shape that spans the curved portion 29 and the connecting portion 28 of the floor tunnel 2 in the front-rear direction. Ribs rising upward are integrally formed at both ends in the vehicle width direction of each branch portion 32. Here, as shown in fig. 2, the reinforcing bracket 3 extends along the curved shape of the curved portion 29 when viewed from the vehicle width direction. The radius of curvature r2 of the portion of the reinforcement bracket 3 that covers the curved portion 29 is greater than the radius of curvature r1 of the curved portion 29 of the floor tunnel 2.
A second fixing portion 38 is provided at the rear end portion of the right branch portion 33. A third fixing portion 39 is provided at the rear end of the left branch portion 34. An imaginary line T connecting the first fixing portion 37, the second fixing portion 38, and the third fixing portion 39 of the reinforcing bracket 3 is formed in a truss (truss) shape when viewed from the up-down direction. The reinforcement bracket 3 is fastened to the second upper portion 21 of the floor tunnel 2 by fastening members such as bolts in the second fixing portion 38 and the third fixing portion 39. The second fixing portion 38 and the third fixing portion 39 are connected to the arch portion 30 of the floor tunnel 2.
(scaleboard)
Fig. 3 is a sectional view taken along the line III-III of fig. 1.
The lining plate 4 is mounted to the lower surface of the floor tunnel 2. The lining panel 4 extends in the vehicle width direction along the lower surface of the floor tunnel 2. The backing 4 is disposed at a position overlapping the second fixing portion 38 and the third fixing portion 39 when viewed in the vertical direction. The liner 4 has an upper wall 41, a right side wall 42 and a left side wall 43.
The upper wall 41 of the lining plate 4 is opposite the second upper part 21 of the floor tunnel 2. Bolts for connecting the reinforcement bracket 3 to the floor tunnel 2 are inserted into the upper wall 41 of the lining 4. Thereby, the reinforcement bracket 3, the floor tunnel 2, and the lining panel 4 are fastened together in a state of 3 pieces being overlapped at positions corresponding to the second fixing portion 38 and the third fixing portion 39 in the front-rear direction.
The right side wall 42 of the backing plate 4 is opposite the second right side 22 of the floor tunnel 2. The left side wall 43 of the lining panel 4 is opposed to the second left side portion 24 of the floor tunnel 2. In this way, the lining plate 4 is formed in a U shape that opens downward along the lower surface of the floor tunnel 2. Further, reinforcing ribs 40 extending in the vehicle width direction are formed at both ends in the front-rear direction of the lining 4.
(Beam)
As shown in fig. 2, the cross member 5 is disposed below the floor panel 8 at a position corresponding to the reinforcement bracket 3 in the front-rear direction. The cross member 5 extends in the vehicle width direction between a pair of rocker beams (not shown) extending in the front-rear direction at both ends in the vehicle width direction of the floor panel 8. The cross member 5 has a hat-like shape that opens upward in a cross-sectional shape along the front-rear direction when viewed in the vehicle width direction. The cross member 5 is curved so as to project upward along the floor tunnel 2 when viewed from the front-rear direction. A reinforcement 6 extending in the vehicle width direction is disposed above the cross member 5. A closed cross section is formed by the cross beam 5 and the reinforcement 6. The cross member 5 and the reinforcement 6 are coupled to a floor panel 8 (floor tunnel 2) via a mounting bracket 7.
In the present embodiment, the cross member 5 is disposed at a position overlapping the reinforcement bracket 3 when viewed in the vertical direction. The width dimension L1 in the front-rear direction of the cross member 5 is smaller than the width dimension L2 in the front-rear direction of the reinforcement bracket 3. The cross member 5 is disposed inside a width L2 of the reinforcing bracket 3 in the front-rear direction.
(action, Effect)
Next, the operation and effect of the floor tunnel structure 1 will be described.
According to the floor tunnel structure 1 of the present embodiment, the floor tunnel 2 can be reinforced by the reinforcing bracket 3 because the reinforcing bracket 3 extending in the front-rear direction of the vehicle body is disposed on the upper surface 2a of the floor tunnel 2. This can improve the strength of the floor tunnel 2 against a load in the front-rear direction of the vehicle body. The reinforcing bracket 3 includes a first fixing portion 37, a second fixing portion 38, and a third fixing portion 39, and the second fixing portion 38 and the third fixing portion 39 are provided on the outer side in the vehicle width direction than the first fixing portion 37. The second fixing portion 38 and the third fixing portion 39 are provided at positions separated from the first fixing portion 37 in the front-rear direction. Thus, the reinforcing bracket 3 fixes the first fixing portion 37, the second fixing portion 38, and the third fixing portion 39 to the floor tunnel 2 in a truss-like arrangement when viewed in the vertical direction. Therefore, when a load in the front-rear direction is input to the floor tunnel 2, the load is transmitted from the first fixing portion 37 to the second fixing portion 38 and the third fixing portion 39, and thus the load can be transmitted to the ridge line located on the vehicle width direction outer side of the floor tunnel 2 via the reinforcement bracket 3. In this way, since the load can be transmitted to the ridge line of the floor tunnel 2 having high rigidity, the floor tunnel 2 can be secured to have sufficient rigidity, and deformation of the floor tunnel 2 can be suppressed.
Since the reinforcement bracket 3 is provided on the upper surface 2a of the floor tunnel 2, the floor tunnel structure 1 including the floor tunnel 2 and the reinforcement bracket 3 can be suppressed from being large in the vehicle width direction. This can maintain a wide space under the feet of the occupant. Further, the dimension in the vehicle width direction of the portion (base portion 31) of the reinforcement bracket 3 where the first fixing portion 37 is provided is smaller than the width dimension in the vehicle width direction of the floor tunnel 2. Therefore, the peripheral member such as the tunnel cover can be connected to the portion of the upper surface 2a of the floor tunnel 2 where the reinforcing bracket 3 is not disposed. This enables effective use of the space around the floor tunnel 2.
Therefore, the floor tunnel structure 1 of the vehicle body can be provided in which the strength of the floor tunnel 2 is improved while suppressing an increase in size of the floor tunnel 2.
The reinforcing bracket 3 includes a base portion 31 and a branch portion 32, and a first fixing portion 37 is provided on the base portion 31, and a second fixing portion 38 and a third fixing portion 39 are provided on the branch portion 32. This allows the load to be transmitted from the base portion 31 to the branch portion 32, and thus the load can be transmitted more effectively to the ridge line of the floor tunnel 2 via the reinforcement bracket 3. Further, since the branch portion 32 is provided along the path of the load from the first fixing portion 37 to the second fixing portion 38 and the third fixing portion 39, the load can be efficiently transmitted with a minimum configuration. Therefore, the reinforcing bracket 3 can be downsized.
The branch portion 32 is formed in a V shape inclined outward in the vehicle width direction as going rearward in the front-rear direction from the base portion 31. This allows the load input from the front of the floor tunnel 2 to be gradually transmitted outward in the vehicle width direction along the branch portion 32. Therefore, the load input from the front can be stably transmitted to the ridge line of the floor tunnel 2.
A lining 4 extending in the vehicle width direction is provided on the lower surface of the floor tunnel 2. Thus, when a load is input to the floor tunnel 2, the floor tunnel 2 can be prevented from spreading and flattening in the vehicle width direction. Here, for example, when a load is input from the front of the floor tunnel 2, a moment directed upward is generated at the front end portion of the floor tunnel 2, and the floor tunnel 2 may be bent downward. At this time, the wider the angle between the upper surface 2a of the floor tunnel 2 and the side surface, the flatter the floor tunnel 2, the less the side surface support force against moment, and the more easily the floor tunnel 2 is bent. In contrast, according to the floor tunnel structure 1 of the present configuration, since the liner plate 4 suppresses flattening of the floor tunnel 2, the supporting strength of the tunnel against the moment in the vertical direction can be improved. Therefore, the strength of the floor tunnel 2 against load can be improved.
Since the reinforcing beads 40 extending in the vehicle width direction are formed in the lining panel 4, the strength of the lining panel 4 can be increased. Therefore, the strength of the floor tunnel 2 to which the lining 4 is attached can be further improved.
Since the reinforcing bracket 3 is disposed so as to straddle the connecting portion 28 that connects the front member 10 and the rear member 20, the rigidity of the connecting portion 28 can be ensured by attaching the reinforcing bracket 3. Since the virtual line T connecting the first fixing portion 37, the second fixing portion 38, and the third fixing portion 39 is formed in a truss shape when viewed from the vertical direction, the load input in the front-rear direction can be transmitted along the ridge line of the floor tunnel 2. Since the reinforcement bracket 3 is fixed to the floor tunnel 2 by fastening, the reinforcement bracket 3 can be easily attached to and detached from the floor tunnel 2, as compared with the case of welding, for example. Further, for example, since the reinforcing bracket 3 can be attached after the front member 10 and the rear member 20 are connected, workability at the time of manufacturing can be improved.
The floor tunnel 2 has a bent portion 29, and the reinforcement bracket 3 is disposed across the bent portion 29. Since the bending portion 29 has lower rigidity against vertical moment than other portions, the reinforcing bracket 3 is disposed in the bending portion 29 having lower rigidity, thereby effectively suppressing deformation of the floor tunnel 2. Since the curvature of the reinforcing bracket 3 when viewed in the vehicle width direction is smaller than the curvature of the curved portion 29, a load acting on the peripheral edge of the curved portion 29 can be transmitted to the reinforcing bracket 3, and stress can be dispersed. This can further suppress deformation of the bent portion 29 of the floor tunnel 2.
A cross member 5 extending in the vehicle width direction is provided at a position overlapping the reinforcement bracket 3 in the front-rear direction. This enables the load input to the floor tunnel 2 to be dispersed and transmitted to the reinforcement bracket 3 and the cross member 5. Therefore, deformation of the floor tunnel 2 can be suppressed.
Since the second fixing portion 38 and the third fixing portion 39 are attached to the raised portion 30 of the floor tunnel 2, the load transmitted from the reinforcement bracket 3 to the floor panel 8 via the second fixing portion 38 and the third fixing portion 39 can be received by the raised portion 30. Since the raised portion 30 is formed such that the upper surface 2a is positioned upward as going to one side in the front-rear direction, the load input from the reinforcing bracket 3 can be received by a surface intersecting the input direction of the load. Therefore, the load input from the reinforcement bracket 3 can be efficiently transmitted to one of the front and rear directions of the floor tunnel 2, and the rigidity of the raised portion 30 can be improved, thereby improving the connection strength between the raised portion 30 and the reinforcement bracket 3.
The technical scope of the present invention is not limited to the above-described embodiments, and various modifications can be made without departing from the scope of the present invention.
For example, in the above-described embodiment, the reinforcing bracket 3 is formed in a V-shape having the base portion 31 and the branch portion 32, but the present invention is not limited thereto. For example, the reinforcing bracket 3 may be formed in a truss-like triangular shape along the first fixing portion 37, the second fixing portion 38, and the third fixing portion 39. Further, the fixing device may be formed in a rectangular plate shape having 3 fixing points 37, 38, and 39 arranged in a truss shape.
The branch portion 32 may be disposed forward of the base portion 31. That is, the branch portion 32 may be formed in a V shape inclined outward in the vehicle width direction as going from the front end portion of the base portion 31 toward the front. In this case, the same operation and effect as those of the above-described embodiment can be exhibited with respect to the load input from the rear side toward the front side.
The ribs 40 of the backing plate 4 may also be absent. Instead of the reinforcing ribs 40, a rib may be provided or a reinforcing member may be provided to increase the strength of the backing 4.
The cross member 5 may be disposed at a position at least partially overlapping the reinforcement bracket 3 in the front-rear direction.
In the above-described embodiment, the floor panel 8 and the floor tunnel 2 are formed by 2 members of the front member 10 and the rear member 20, but may be formed by 1 member. Further, the floor tunnel 2 may be fixed to the floor panel 8 by fastening or the like after being formed separately from the floor panel 8.
The raised portion 30 may be formed to rise substantially perpendicularly to the second upper portion 21 of the floor tunnel 2, for example.
In addition, the components in the above embodiments may be replaced with known components as appropriate, and the above embodiments may be combined as appropriate, without departing from the scope of the present invention.
Claims (9)
1. A floor tunnel structure of a vehicle body is characterized by comprising:
a floor tunnel provided at a center portion in a vehicle width direction in a floor of a vehicle body and extending in a front-rear direction of the vehicle body; and
a reinforcement bracket disposed on an upper surface of the floor tunnel,
the reinforcing bracket has:
a first fixing portion mounted to the upper surface of the floor tunnel;
a second fixed portion provided on one side in the front-rear direction and one side in the vehicle width direction with respect to the first fixed portion; and
and a third fixing portion provided on one side in the front-rear direction and the other side in the vehicle width direction with respect to the first fixing portion.
2. The floor tunnel structure of vehicle body according to claim 1,
the reinforcing bracket has: a base portion fixed to a central portion of the floor tunnel in the vehicle width direction; and a branch portion extending in two strands from the base portion,
the first fixing part is arranged on the base part,
the branch portion is provided with the second fixing portion and the third fixing portion.
3. The floor tunnel structure of vehicle body according to claim 2,
the branch portion is formed in a V shape that is inclined outward in the vehicle width direction as going from the base portion toward the rear in the front-rear direction.
4. The floor tunnel structure of vehicle body according to any one of claims 1 to 3,
the floor tunnel structure of the vehicle body includes a lining plate attached to a lower surface of the floor tunnel and extending in the vehicle width direction along the lower surface of the floor tunnel,
the lining plate is disposed at a position overlapping the second fixing portion and the third fixing portion when viewed in the vertical direction of the vehicle body.
5. The floor tunnel structure of vehicle body according to claim 4,
the lining panel is formed with a rib extending in the vehicle width direction.
6. The floor tunnel structure of vehicle body according to any one of claims 1 to 3,
the floor tunnel includes a front member provided forward in the front-rear direction and a rear member provided rearward in the front-rear direction,
a connecting portion that connects the front member and the rear member is disposed between the first fixing portion of the reinforcing bracket, the second fixing portion, and the third fixing portion,
an imaginary line connecting the first fixing portion, the second fixing portion, and the third fixing portion is formed in a truss shape when viewed from the top-bottom direction of the vehicle body.
7. The floor tunnel structure of vehicle body according to any one of claims 1 to 3,
the floor tunnel has a curved portion that is curved such that one end in the front-rear direction is located above with respect to the other end,
the reinforcement bracket is disposed across the bend,
the radius of curvature of the reinforcement bracket as viewed in the vehicle width direction is larger than the radius of curvature of the curved portion.
8. The floor tunnel structure of vehicle body according to any one of claims 1 to 3,
the floor tunnel structure of the vehicle body includes a cross member provided below the floor tunnel and extending in the vehicle width direction,
the cross member is disposed at a position overlapping with the reinforcement bracket in the front-rear direction.
9. The floor tunnel structure of vehicle body according to any one of claims 1 to 3,
the floor tunnel has a raised portion formed in such a manner that the upper surface is located upward with going to the one side in the front-rear direction,
the second fixing portion and the third fixing portion are attached to the arch portion.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2019143206A JP6952743B2 (en) | 2019-08-02 | 2019-08-02 | Body floor tunnel structure |
| JP2019-143206 | 2019-08-02 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213323376U true CN213323376U (en) | 2021-06-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021322486.8U Active CN213323376U (en) | 2019-08-02 | 2020-07-08 | Floor tunnel structure of vehicle body |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP6952743B2 (en) |
| CN (1) | CN213323376U (en) |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3976199B2 (en) * | 2003-10-16 | 2007-09-12 | 本田技研工業株式会社 | Body structure |
| JP2010006285A (en) * | 2008-06-27 | 2010-01-14 | Mitsubishi Motors Corp | Floor panel reinforcing structure |
| DE102012102447B4 (en) * | 2012-03-22 | 2023-03-02 | Dr. Ing. H.C. F. Porsche Aktiengesellschaft | Tunnel reinforcement and supporting structure |
| JP6236046B2 (en) * | 2015-09-17 | 2017-11-22 | 本田技研工業株式会社 | Body structure |
| JP6354729B2 (en) * | 2015-10-22 | 2018-07-11 | トヨタ自動車株式会社 | Vehicle floor structure |
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2019
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| Publication number | Publication date |
|---|---|
| JP6952743B2 (en) | 2021-10-20 |
| JP2021024405A (en) | 2021-02-22 |
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