JP2010006285A - Floor panel reinforcing structure - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a floor panel reinforcing structure capable of suppressing communication between a cabin and the vehicle exterior through a floor panel. <P>SOLUTION: This floor panel reinforcing structure 10 includes: the floor panel 33 having a floor tunnel 34; a floor tunnel reinforcing plate 40 and cross member 36 for forming first and second spaces S1 and S2 surrounded together with the floor tunnel in a space with the floor tunnel 34; and a reinforcing member 50 which is stored in the floor tunnel 34 and is arranged at the vehicle exterior of the floor panel 33 and the cross member 36, and the floor panel 33 and the floor tunnel reinforcing plate 40. Fixing parts X, 101 and 102 for fixing the reinforcing member 50 in the floor tunnel 34 are provided in a portion arranged at the vehicle exterior, of portions for forming the first and second spaces S1 and S2 in the floor tunnel 34 and the floor panel 33 or the floor tunnel 34 and the cross member 36. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a technique for reinforcing a floor panel of a vehicle.

  2. Description of the Related Art Conventionally, in a FR (Front engine Rear drive) type automobile, a floor tunnel that accommodates a power train (such as a transmission or a propeller shaft) that transmits engine driving force to a rear wheel that is a driving wheel is formed in the floor panel. .

This type of floor tunnel is provided with a reinforcing structure in order to improve the rigidity against impacts such as when a vehicle collides forward. As this type of reinforcing structure, a structure in which a plate-like reinforcing member is attached to the upper wall portion of the floor tunnel has been proposed. The reinforcing member is fixed to the floor tunnel so as to make surface contact with the upper wall portion (see, for example, Patent Document 1).
JP 2006-315440 A

  On the other hand, in the FR type vehicle, as described above, a power train such as a transmission and a propeller shaft is accommodated in the floor tunnel. The transmission is a hard device.

  For this reason, when a load is input from the front of the vehicle such as when the vehicle collides forward and the load is input to the engine, the load acts on the transmission via the engine. When a load is input to the transmission, the attitude of the mission changes to the truss in the floor tunnel due to the load.

  When the attitude of the transmission changes in the floor tunnel, the transmission may hit the inner surface of the floor tunnel. For this reason, the structure which reinforces a floor panel is calculated | required.

  However, the reinforcing structure disclosed in Patent Document 1 is a structure in which the reinforcing member is fixed so as to make surface contact with the upper wall portion of the floor tunnel. For this reason, when the transmission hits the reinforcing member, the impact immediately acts on the floor tunnel via the reinforcing member, and therefore, the impact acting on the floor panel may be increased. It is considered that cracks and holes are formed in the floor panel due to this impact. It is not preferable that the vehicle compartment communicates with the outside of the vehicle through the floor panel.

  Accordingly, an object of the present invention is to provide a floor panel reinforcing structure capable of suppressing communication between the passenger compartment and the outside of the vehicle through the floor panel.

  The floor panel reinforcing structure of the present invention is a space that is overlapped with a floor panel in which a floor tunnel is formed, and the floor tunnel of the floor panel, and is enclosed with the floor tunnel at least partially between the floor tunnel. And a reinforcing member that is accommodated in the floor tunnel and disposed outside the vehicle with respect to the floor panel and the space forming member. The fixing portion that fixes the reinforcing member in the floor tunnel is provided on a portion of the floor tunnel and the space forming member that forms the enclosed space and is disposed on the vehicle outer side.

  In a preferred embodiment of the present invention, the reinforcing member is fixed to a portion of the floor tunnel and the space forming member that forms the enclosed space and disposed on the vehicle outer side. The fixing portion is a fixing portion between the reinforcing member and the one arranged on the vehicle outer side among the portions forming the enclosed space in the floor tunnel and the space forming member.

  In a preferred embodiment of the present invention, the reinforcing member is fixed to a portion of the floor tunnel and the space forming member that form the enclosed space on a side disposed on the vehicle outer side via a bracket. The fixing portion is a fixing portion that fixes the bracket and the one arranged on the vehicle outer side among the portions forming the enclosed space in the floor tunnel and the space forming member.

  ADVANTAGE OF THE INVENTION This invention can provide the floor panel reinforcement structure which can suppress that a vehicle interior communicates with the exterior through a floor panel.

  The floor panel reinforcement structure which concerns on one Embodiment of this invention is demonstrated using FIGS. FIG. 1 is a schematic view showing an automobile 20 including a floor panel reinforcing structure 10 of the present embodiment. The automobile 20 is an example of a vehicle in which the present invention is used. The automobile 20 is a FR (Front engine Rear drive) type automobile.

  As shown in FIG. 1, the automobile 20 includes an engine 21, a power train 22, a front wheel 23, a rear wheel 24, and the like. FIG. 1 shows the engine 21, the power train 22, the front wheels 23, and the rear wheels 24 by solid lines. Further, FIG. 1 shows the front seat 26 and the rear seat 27 with a two-dot chain line in order to show the positional relationship of the above-described components in the vehicle body 25. The front seat 26 is a driver seat 26a and a passenger seat 26b.

  Since the automobile 20 is of the FR type, an engine room 29 is formed in the vehicle body 25 in front of the passenger compartment 28. An engine 21 is accommodated in the engine room 29.

  The power train 22 transmits the driving force of the engine 21 to the rear wheels 24 that are driving wheels. The power train 22 includes a transmission 30, a propeller shaft 31, a differential gear 32, and the like.

  The transmission 30 is accommodated in a floor tunnel 34 formed in the floor panel 33. The floor tunnel 34 is indicated by a two-dot chain line in the figure. In the drawing, the rear end of the floor tunnel 34 is omitted. The floor tunnel 34 is disposed at the center in the vehicle width direction W1 and extends in the vehicle body front-rear direction W2. The transmission 30 is installed vertically.

  The differential gear 32 is disposed at the rear part of the vehicle body 25. The propeller shaft 31 connects the transmission 30 and the differential gear 32. The propeller shaft 31 is accommodated in the floor tunnel 34.

  FIG. 2 is a perspective view schematically showing a part of the floor panel 33. As shown in FIG. 2, the floor tunnel 34 has a concave shape that opens toward the lower side of the vehicle body (outside the vehicle with the floor panel 33 in between) with respect to the flat portion (substantially flat portion) 35 of the floor tunnel 34. It is. The floor tunnel 34 extends in the vehicle body front-rear direction W2 while changing its cross-sectional shape (cross-sectional shape cut along the vehicle width direction W1) in the vehicle body front-rear direction W2.

  FIG. 3 is an enlarged plan view showing the range of F3 shown in FIG. In the drawing, the front seat 26 and the rear seat 27 are omitted. In FIG. 3, the floor panel 33 and the floor tunnel reinforcing plate 40 are indicated by a two-dot chain line. As shown in FIG. 3, the vehicle body 25 includes a cross member 36 disposed in the vicinity of the front seat 26. The cross member 36 is disposed below the floor panel 33 and extends in the vehicle width direction W1. The cross members 36 are arranged between the side members (not shown) that are arranged one on each side of the vehicle width direction W1 and extend in the vehicle body front-rear direction W2.

  The floor panel 33 is provided with a floor panel reinforcing structure 10. The floor panel reinforcing structure 10 includes a floor panel 33, a floor tunnel reinforcing plate 40, a reinforcing member 50, a bracket 60, and a cross member 36.

  As shown in FIG. 2, the floor tunnel reinforcing plate 40 is fixed to the floor tunnel 34. The floor tunnel reinforcing plate 40 is formed of, for example, a plate-like member, and has a shape that substantially overlaps a portion of the floor tunnel 34 opposite to the opening (near the top formed in a concave shape), and is in the vehicle longitudinal direction. It extends to. The floor tunnel reinforcing plate 40 is stacked on the side opposite to the opening of the floor tunnel 34 from the vehicle compartment 28 side, and the periphery is fixed to the floor tunnel 34 by welding, for example.

  The reinforcing member 50 is disposed in the floor tunnel 34. The reinforcing member 50 is interposed in the floor tunnel 34 between the transmission 30 and the inner surface 34 a of the floor tunnel 34.

  FIG. 3 shows the arrangement position of the reinforcing member 50. As shown in FIG. 3, the reinforcing member 50 is disposed in the vicinity of the front seat 26 in the floor tunnel 34, that is, in the vicinity of the cross member 36.

  The reinforcing member 50 is, for example, when the transmission 30 moves relative to the floor tunnel 34 in the vehicle body longitudinal direction W2, specifically, when the transmission 30 moves rearward relative to the floor tunnel 34. By contacting the transmission 30, the transmission 30 is prevented from hitting the inner surface 34 a of the floor tunnel 34. For this reason, the reinforcing member 50 has such a strength that it does not break even if it comes into contact with the transmission 30, such as no holes or cracks. Specifically, the thickness of the reinforcing member 50 is taken into consideration.

In the automobile 20 of the present embodiment, the distance between the transmission 30 and the inner surface 34a in the vicinity of the front seat 26 in the floor tunnel 34 is short, and therefore, it is easy to contact the inner surface 34a. For this reason, the reinforcing member 50 is disposed near the front seat 26 in the floor tunnel 34. The reinforcing member 50 is not limited to being disposed near the front seat 26 in the floor tunnel 34. Depending on the vehicle, the distance between the transmission and the floor tunnel is short (depending on the design of the vehicle body), and therefore the locations where they are likely to contact each other differ. The reinforcing members 50 are provided at portions that are easy to contact each other.

  As shown in FIGS. 2 and 3, a pair of reinforcing members 50 are provided. The reinforcing members 50 are arranged symmetrically with respect to the floor tunnel 34 in the vehicle width direction. In addition, the reinforcing member 50 has a symmetrical shape with the floor tunnel 34 interposed between the reinforcing member 50 and the vehicle body 25. For this reason, the reinforcing member 50 and the fixing structure of the reinforcing member 50 to the vehicle body 25 will be described as a representative of the reinforcing member 50 arranged on one side in the vehicle width direction. The fixing structure, shape, and the like of the other reinforcing member 50 may be symmetric with respect to the one reinforcing member 50 in the vehicle width direction W1.

  As shown in FIG. 3, the reinforcing member 50 includes a first portion 51 extending along the vehicle width direction W <b> 1 when attached to the vehicle body 25, and a vehicle body longitudinal direction W <b> 2 when attached to the vehicle body 25. The planar shape is substantially L-shaped.

  As shown in FIG. 2, since the reinforcing member 50 is accommodated in the floor tunnel 34, the reinforcing member 50 has a shape that is curved or bent in accordance with the shape of the floor tunnel 34. The reinforcing member 50 covers the vertical wall portion 34 b of the floor tunnel 34.

  The cross-sectional shape of the floor tunnel 34 is substantially rectangular. The vertical wall portion 34 b of the floor tunnel 34 is a portion that is substantially along the vertical direction of the vehicle body among the wall portions constituting the floor tunnel 34.

  A structure for fixing the reinforcing member 50 to the vehicle body 25 will be described. The reinforcing member 50 is fixed to the cross member 36 at the first position P1 behind the cross member 36 in the floor tunnel 34. The first position P <b> 1 is located on the upper wall portion 100 of the floor tunnel 34. The upper wall portion 100 is a portion that is continuous with the vertical wall portion 34 b and is opposite to the opening of the floor tunnel 34.

  First, a structure for fixing the reinforcing member 50 to the first position P1 will be described. In the reinforcing member 50, the rear end portion (the rear end portion along the vehicle body longitudinal direction W2 when attached to the vehicle body 25) 53 of the second portion 52 is fixed to the first position P1 via the bracket 60. Is done.

  4 is a cross-sectional view of the vehicle body 25 taken along the line F4-F4 shown in FIG. FIG. 4 shows a fixing structure of the reinforcing member 50 at the first position P1 in the floor panel 33. FIG. 4 is a cross-sectional view of the fixing structure of the reinforcing member 50 in the vehicle width direction W1 so as to pass through the first position P1.

  FIG. 5 is a cross-sectional view of the vehicle body 25 taken along line F5-F51-F52-F5 shown in FIG. FIG. 5 is a cross-sectional view of the fixing structure of the reinforcing member 50 at the first position P1 along the vehicle body longitudinal direction W2.

  As shown in FIGS. 4 and 5, in the fixing structure of the reinforcing member 50 at the first position P <b> 1, the reinforcing member 50 is fixed to the first position P <b> 1 of the floor panel 33 via the bracket 60. . As shown in FIG. 5, the bracket 60 is formed with a front flange 61 and a rear flange 62 that are welded and fixed to the floor panel 33 at a front portion and a rear portion along the vehicle body longitudinal direction W2. The flat surface portion 63 between the front and rear flanges 61 and 62 protrudes in a direction away from the floor tunnel 34 (for example, below the vehicle body). For this reason, a slight gap is defined between the flat portion 63 and the floor panel 33.

  A weld bolt 64 is fixed to the flat portion 63. The weld bolt 64 is fixed by welding a bolt head 65 of the weld bolt 64 to the flat portion 63. A threaded portion 66 of the weld bolt 64 (a rod-shaped portion where a male thread is formed) passes through the flat surface portion 63 and protrudes on the opposite side of the front and rear flanges 61 and 62. In a state where the front and rear flanges 61 and 62 of the bracket 60 are welded and fixed to the floor panel 33, the screw portion 66 protrudes on the opposite side to the floor panel 33.

  A through hole through which the threaded portion 66 passes is formed in the end portion 53 of the reinforcing member 50. When the threaded portion 66 is inserted into the through hole and the nut 67 is engaged with the threaded portion 66, the reinforcing member 50 is fastened and fixed to the bracket 60. In the fixed state, the reinforcing member 50 is in surface contact with the flat portion 63 of the bracket 60, for example. Therefore, the reinforcing member 50 is fixed to the floor panel 33 via the bracket 60.

  The welded portion X between the bracket 60 and the floor tunnel 34 is an example of a fixing portion referred to in the present invention.

  Here, the floor panel 33 and the floor tunnel reinforcing plate 40 in the vicinity of the first position P1 will be described. As shown in FIG. 4, in the vicinity of the first position P1, a first space S1 is formed between the floor tunnel 34 and the floor tunnel reinforcing plate 40.

  The floor tunnel reinforcing plate 40 is provided with a concave portion 41 that opens toward the floor tunnel 34 at a portion facing the first position P1. The concave portion 41 faces the edge portion 42 of the floor tunnel 34. The edge portion 42 is a corner portion that is the upper end portion of the vertical wall portion 34b of the floor tunnel 34 and the vicinity thereof.

  The opening of the concave portion 41 is substantially covered with the floor tunnel 34 (the edge portion 42 and a portion in the vicinity thereof). In FIG. 4, the edge of the opening of the recessed portion 41 and the edge 42 of the floor tunnel 34 are not in contact with each other, but at another position (a position shifted in the vehicle body longitudinal direction W2), the edge of the recessed portion 41 And the floor tunnel 34 are in contact with each other and fixed by welding to form a closed cross section.

  Thus, the first space S <b> 1 is formed between the concave portion 41 and the floor tunnel 34. The first space S1 is surrounded by the peripheral wall portion that forms the concave portion 41 and the floor tunnel 34, and is a substantially closed space.

  As shown in FIG. 5, the first space S1 extends a predetermined distance in the vehicle body longitudinal direction W2. In other words, a first space S1 surrounded by a substantially closed space by the concave portion 41 of the floor tunnel reinforcing plate 40 and the floor tunnel 34 is formed at a predetermined distance in the vehicle body longitudinal direction W2 across the first position P1. ing. The welded portion X between the front and rear flanges 61 and 62 of the bracket 60 and the floor tunnel 34 is opposed to the first space S1.

  The floor panel 33 is located on the vehicle exterior side 200 with respect to the floor tunnel reinforcing plate 40 with the first space S1 interposed therebetween. In the relationship between the floor panel 33 and the floor tunnel reinforcing plate 40, the floor panel 33 is an example of the one located outside the vehicle in the present invention.

  Next, a fixing structure with the reinforcing member 50 cross member 36 will be described. 6 is a cross-sectional view of the vehicle body 25 shown along line F6-F6 shown in FIG. FIG. 6 shows a fixing structure between the cross member 36 and the reinforcing member 50. FIG. 5 also shows a fixing structure between the cross member 36 and the reinforcing member 50.

  As shown in FIG. 5, the cross member 36 has a concave shape that opens toward the floor panel 33. Of the opening edge of the cross member 36, a front flange 36b extending forward of the vehicle body is formed at a front edge 36a positioned in front of the vehicle body. A rear flange 36e extending rearward of the vehicle body is formed at a rear edge 36c located rearward of the vehicle body among the opening edges.

  As shown in FIG. 5, the cross member 36 has a shape that opens toward the floor panel 33 from one end to the other end in the vehicle width direction. Similarly, a front flange 36b and a rear flange 36e are formed from one end to the other end in the vehicle width direction. Is formed.

  The front flange 36b and the rear flange 36e are in contact with the lower surface (surface opposite to the vehicle compartment 28) of the floor panel 33 from one end to the other end in the vehicle width direction, and are fixed by welding. Therefore, a second space S <b> 2 that is a closed space is formed between the cross member 36 and the floor panel 33. The second space S2 is formed in the range from one end to the other end of the cross member 36 (including the floor tunnel 34).

  Further, as shown in FIG. 6, the portion of the cross member 36 that passes through the floor tunnel 34 is formed in accordance with the shape of the floor tunnel 34. Specifically, a portion of the cross member 36 that passes through the floor tunnel 34 has a concave shape that opens to the opposite side of the floor tunnel 34. For this reason, the cross member 36 has a vertical wall portion 37 facing the vertical wall portion 34 b of the floor tunnel 34.

  As shown in FIGS. 3, 5, and 6, the reinforcing member 50 has the first portion 51 fixed at two locations, the second position P <b> 2 and the third position P <b> 3 of the cross member 36. The second position P2 is a substantially central position of the cross member 36 in the vehicle width direction W1. The third position P <b> 3 is disposed on the vertical wall portion 37 of the cross member 36 that faces the vertical wall portion 34 b of the floor tunnel 34.

  The second position P2 is located at the center in the vehicle width direction, and is therefore fastened together with the other reinforcing member 50 and fastened to the cross member 36. Specifically, as shown in FIG. 6, a weld nut 70 is welded and fixed to the floor panel 33 side at the second position P <b> 2 of the cross member 36. A through hole communicating with the weld nut 70 is formed at the second position P <b> 2 of the cross member 36.

  When the first portion 51 of the reinforcing member 50 is attached to the vehicle body 25, the end 51a located on the inner side of the vehicle body faces the second position P2. One end 51 a of the reinforcing member 50 contacts the cross member 36. The end portion 51 a of the other reinforcing member 50 is in contact with the end portion 51 a of the one reinforcing member 50. A through hole 101 communicating with the weld nut 70 is formed in both end portions 51a. The end 51a of each reinforcing member 50 is fastened and fixed to the cross member 36 by the bolt 71 passing through the through hole 101 and being fixed to the weld nut 70. The through-hole 101 is an example of the fixing portion referred to in the present invention.

  A weld bolt 72 is fixed to the third position P3 of the cross member 36. In the weld bolt 72, for example, a bolt head 72a is fixed by welding to a surface of the cross member 36 facing the floor panel 33 (vertical wall portion 34b), and a screw portion 72b (a rod-like portion on which a male screw is formed) is crossed. It penetrates the member 36 and protrudes on the opposite side to the floor panel 33.

  When the first portion 51 of the reinforcing member 50 is attached to the vehicle body 25, the end portion 51b located on the outer side in the vehicle width direction faces the third position P3. A through hole 102 through which the threaded portion 72b of the bolt 72 is inserted is formed in the end portion 51b. The threaded portion 72 b passes through the through hole 102 of the end portion 51 b and engages with the nut 73, whereby the end portion 51 b is fastened and fixed to the cross member 36. As shown in FIG. 6, a spacer 74 or the like may be interposed between the third position P3 of the cross member 36 and the end 51b. The end 51 b of the reinforcing member 50 is in contact with the spacer 74. The spacer 74 is in contact with the cross member 36. The through-hole 102 is an example of the fixing portion referred to in the present invention.

  In the floor panel reinforcing structure 10 configured as described above, the rear end portion 53 of the second portion 52 of the reinforcing member 50 is fixed to the first position P1 of the floor panel 33 via the bracket 60. The bracket 60 is fixed by welding to a portion where the first space S1 is formed between the bracket 60 and the floor tunnel reinforcing plate 40 in the floor tunnel 34 (the front and rear flanges 61 and 62 are fixed by welding). ).

  The ends 51a and 51b of the reinforcing member 50 are fixed to the cross member 36 with bolts and nuts. A second space S <b> 2 is formed between the cross member 36 and the floor tunnel 34.

  For this reason, when the load is input to the transmission 30 or the like, the communication between the interior of the passenger compartment 28 and the outside of the vehicle 200 through the floor panel 33 due to the contact between the transmission 30 and the reinforcing member 50 is suppressed. .

  This point will be specifically described. When a load is input from the front, for example, when the automobile 20 collides, the load acts on the transmission 30 via the engine 21. Since the transmission 30 is a highly rigid device, it does not deform so much. Therefore, the position and posture of the transmission 30 in the floor tunnel 34 are changed by the load.

  At this time, the transmission 30 comes into contact with the reinforcing member 50. As described above, the reinforcing member 50 has sufficient strength so that a hole is not formed or damaged with respect to contact with the transmission 30. The impact when the transmission 30 collides with the reinforcing member 50 is caused by the bolts 71 and 72 that fix the welding portion X (first position P1) between the bracket 60 and the floor panel 33 and the reinforcing member 50 and the cross member 36. It acts on the edges (second and third positions P2, P3) of the through holes 101, 102 that pass therethrough.

  At this time, even if the welded portion of the floor panel 33 with the bracket 60 is torn, the welded portion faces the first space S1. That is, even if the floor panel 33 is broken, the floor tunnel reinforcing plate 40 has a function of covering the broken portion.

  Similarly, the fixing portion between the cross member 36 and the reinforcing member 50 faces the second space S2. For this reason, even if the fixing portion of the cross member 36 to the reinforcing member 50 is broken, the broken portion is covered with the floor panel 33.

  As described above, even if the fixing portion to the reinforcing member 50 is broken due to the load acting on the reinforcing member 50, the inside of the passenger compartment 28 and the outside of the vehicle 200 are difficult to communicate with each other through the broken portion.

  Furthermore, since the first space S1 is formed, a deformation allowance of the floor tunnel 34 (a space in which the floor tunnel 34 can be deformed) is ensured, so that the load input to the floor tunnel 34 via the bracket 60 is applied to the floor. It is not immediately input to the tunnel reinforcement plate 40 but is absorbed by the floor tunnel 34. As a result, the floor tunnel 34 and the floor tunnel reinforcing plate 40 can be prevented from being damaged at the same time.

  Furthermore, since the deformation allowance of the cross member 36 is secured by the second space S2, it is possible to suppress the load input to the cross member 36 via the reinforcing member 50 from being immediately input to the floor panel 33. . As a result, the cross member 36 and the floor tunnel 34 are prevented from being damaged at the same time.

  Further, by fixing the reinforcing member 50 to the floor panel 33 via the bracket 60 as in the first position P1, there is no need to provide a weld bolt or weld nut on the floor panel 33 side, and the reinforcement is relatively easy. The member 50 can be fixed to the vehicle body 25.

  In this embodiment, the reinforcing member 50 is fixed to the floor tunnel 34 (first position P1) via the bracket 60, and bolts and nuts are attached to the cross member 36 (second and third positions P2, P3). It is fixed using.

  However, it is not limited to this. The reinforcing member 50 may be directly fixed to the first position P1 by using bolts and nuts as in the second and third positions P2 and P3, for example. The reinforcing member 50 may be fixed to the second and third positions P2 and P3 via a bracket such as the bracket 60, for example.

  Further, the reinforcing member 50 is not limited to being fixed to the first position P1 of the floor tunnel 34 and the second and third positions P2, P3 of the cross member 36. For example, among the floor tunnel 34 and a space forming member that forms a space such as the first and second spaces S1 and S2 together with the floor tunnel 34, the floor tunnel 34 is fixed to the one disposed on the vehicle outer side across the space. As a result, the same effects as described above can be obtained.

  In the present embodiment, the reinforcing member 50 has a function of preventing contact between the transmission 30 and the floor tunnel 34, but is not limited thereto. For example, the reinforcing member 50 may be provided to prevent contact between another power train and the floor tunnel 34. For example, the reinforcing member 50 may be provided to prevent contact between the propeller shaft 31 and the floor tunnel 34.

Further, the reinforcing member 50 may be provided to prevent contact between the floor tunnel 34 and other components housed in the floor tunnel 34 instead of the power train 22.

Schematic which shows a motor vehicle provided with the floor panel reinforcement structure of one Embodiment of this invention. FIG. 2 is a perspective view schematically showing a part of the floor panel shown in FIG. 1. The top view which expands and shows the range of F3 shown by FIG. Sectional drawing of the vehicle body shown along the F4-F4 line | wire shown by FIG. FIG. 4 is a cross-sectional view of the vehicle body taken along line F5-F5 shown in FIG. Sectional drawing of the vehicle body shown along the F6-F6 line | wire shown by FIG.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 10 ... Floor panel reinforcement structure, 33 ... Floor panel, 34 ... Floor tunnel, 36 ... Cross member (space formation member), 40 ... Floor tunnel reinforcement plate (space formation member), 50 ... Reinforcement member, 60 ... Bracket, 101 ... Through hole (fixed portion), 102... Through hole (fixed portion), X.

Claims (3)

A floor panel on which a floor tunnel is formed;
A space forming member that overlaps with the floor tunnel of the floor panel and forms a space enclosed with the floor tunnel in at least a part between the floor tunnel;
A reinforcement member disposed outside the vehicle than the floor panel and the space forming member, together with being housed in the floor tunnel,
The fixing portion that fixes the reinforcing member in the floor tunnel is provided on a side of the floor tunnel and the space forming member that forms the enclosed space, and is disposed on a vehicle outer side. Floor panel reinforcement structure. The reinforcing member is fixed to a portion of the floor tunnel and the space forming member that forms the enclosed space, and is disposed on the vehicle exterior side.
The fixing portion is a fixing portion between the reinforcing member and the one arranged on the vehicle outer side among the portions forming the enclosed space in the floor tunnel and the space forming member. Item 2. The floor panel reinforcing structure according to Item 1. The reinforcing member is fixed via a bracket to a portion arranged on the vehicle outer side of the portion forming the enclosed space in the floor tunnel and the space forming member,
The fixing portion is a fixing portion for fixing the bracket to the one arranged on the vehicle outer side among the portions forming the enclosed space in the floor tunnel and the space forming member. The floor panel reinforcement structure according to claim 1.

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