Vehicle underbody structure

Abstract

The objective is to provide a vehicle underbody structure that allows for the installation of console accessories while ensuring the desired frontal impact performance. [Solution] The lower body structure of a vehicle 1 comprises a tunnel section 5 having a pair of left and right ridge sections 5a at the center in the vehicle width direction, a pair of left and right side sills 3, a first floor cross member 20 connecting the side sills 3 in the vehicle width direction, and a console bracket 10 having an open cross section shape that covers the tunnel section 5 from above the vehicle at the front of the first floor cross member 20 and is open at the bottom of the vehicle and extends in the vehicle front-rear direction. The console bracket 10 has a pair of left and right first parts 11 that protrude upward along the pair of left and right ridge sections 5a and to which console accessories are attached to the upper surface 111, and a second part 12 that is located between the first parts 11 and is located below the upper surface 111 of the first parts 11. The second part 12 is fixed to the tunnel section 5 and the first floor cross member 20.

Description

Technical Field

[0001] This invention relates to a lower body structure of a vehicle having a tunnel portion extending in the vehicle front-rear direction at substantially the center in the vehicle width direction of a floor panel, for example.

Background Art

[0002] Recently, a structure is known in which console brackets for attaching console accessories such as a shift and electrical components are fixed to a pair of left and right side sills extending in the vehicle front-rear direction at both side ends in the vehicle width direction of a floor panel and a cross member connecting the pair of left and right side sills in the vehicle width direction (see Patent Document 1).

[0003] The vehicle body structure disclosed in Patent Document 1 includes a front cross member disposed in front of the vehicle, a rear cross member disposed behind the front cross member in the vehicle, a convex tunnel portion extending in the vehicle front-rear direction from a dash panel to the front cross member, and a console bracket extending in the vehicle front-rear direction from the tunnel portion to the rear cross member.

[0004] And, as described above, the console bracket needs to be disposed above the vehicle at a predetermined height with respect to the floor panel in order to attach console accessories to its upper surface, and is fixed to the tunnel portion, the front cross member, and the rear cross member from above by legs extending in the vehicle up-down direction so as to cover the vehicle upper part of the battery disposed between the front cross member and the rear cross member.

[0005] The console bracket configured as described above is fixed to the tunnel portion, the front cross member, and the rear cross member from above by legs extending in the vehicle up-down direction so as to cover the vehicle upper part of the battery, and thus its upper surface is disposed above the vehicle from the battery, and console accessories can be attached to its upper surface.

[0006] On the other hand, for example, it is necessary to transmit the collision load from the front of the vehicle to the rear of the vehicle via the tunnel section, cross member, and side sill. However, the console bracket in Patent Document 1 is fixed from above to the tunnel section, front cross member, and rear cross member by legs that extend in the vertical direction of the vehicle. Therefore, it cannot be said that it can efficiently transmit the collision load from the front of the vehicle to the cross member, and there was room for improvement. [Prior art documents] [Patent Documents]

[0007] [Patent Document 1] International Publication No. 2023 / 181263 [Overview of the Initiative] [Problems that the invention aims to solve]

[0008] In view of the above-mentioned problems, the present invention aims to provide a vehicle lower body structure that can mount console accessories and ensure the desired frontal impact performance. [Means for solving the problem]

[0009] This invention provides a floor panel with a tunnel section formed at the center of the vehicle width direction, projecting upwards on the vehicle and having a pair of left and right ridge sections extending in the vehicle longitudinal direction; a pair of left and right side sills extending in the vehicle longitudinal direction at both ends of the floor panel in the vehicle width direction; a cross member connecting the pair of left and right side sills in the vehicle width direction across the tunnel section and fixed to the upper surface of the floor panel; and a console bracket with an open cross section shape extending in the vehicle longitudinal direction, with an opening at the lower part of the vehicle, at the front of the cross member, covering the tunnel section from above the vehicle, with the lower part of the vehicle open. The console bracket has a pair of left and right first parts projecting upwards on the vehicle along the pair of left and right ridge sections and to which console accessories are attached on the upper surface; and a second part located between the pair of left and right first parts and located below the vehicle below the upper surface of the first parts. The second part is a lower vehicle body structure fixed to the tunnel section and the cross member.

[0010] The cross member connecting the pair of left and right side sills described above in the vehicle width direction across the tunnel section may be directly connected to the side sills at both ends, or it may be connected via seat mounting brackets or gussets provided at both ends. The above-mentioned console accessories refer to the shift lever, the control input (button), the rotary control input, or the components that support them.

[0011] This invention allows the lower body structure of a vehicle to accommodate console accessories while ensuring the desired frontal impact performance. Specifically, the lower body structure of the vehicle has a tunnel section formed at the center of the floor panel in the vehicle width direction, projecting upward from the vehicle and having a pair of left and right ridge sections extending in the vehicle longitudinal direction, a pair of left and right side sills extending in the vehicle longitudinal direction are connected in the vehicle width direction across the tunnel section at both ends of the floor panel in the vehicle width direction, and a cross member fixed to the upper surface of the floor panel, and a console bracket with an open cross section shape that covers the tunnel section from above the vehicle at the front of the cross member and extends in the vehicle longitudinal direction with an opening at the bottom of the vehicle.

[0012] Furthermore, the console bracket has a pair of left and right first parts that protrude upward from the vehicle along the pair of left and right ridges of the tunnel section and on which console accessories to be held by the console are attached to the upper surface, and a second part that is located between the pair of left and right first parts and is located below the upper surface of the first parts.

[0013] Therefore, the pair of left and right first portions project upward along the pair of left and right ridges of the tunnel portion that project upward above the vehicle, and their upper surfaces can be positioned at a predetermined height relative to the floor panel. Therefore, the console accessories attached to the upper surface of the first part can be held at an appropriate height.

[0014] On the other hand, the second portion, which is located between the pair of left and right first portions and below the vehicle above the upper surface of the first portions, is fixed to the tunnel portion and the cross member. Therefore, the tunnel portion and the cross member are connected in a load-transmitting manner without affecting the mounting of console accessories.

[0015] Therefore, the lower body structure of the vehicle, in cooperation with the tunnel section, allows the console bracket to function as a load transmission member that smoothly transmits the collision load from the front of the vehicle to the rear of the vehicle via the cross member and the side sill. As a result, the lower body structure of the vehicle, which includes the tunnel section and the console bracket having the second portion fixed to the cross member, can mount console accessories at a predetermined height and ensure the desired frontal impact performance.

[0016] In an embodiment of this invention, a flange is provided on the vehicle front side of the cross member, which is fixed to the floor panel, and the first portion may be fixed to the flange of the cross member. The above-mentioned fixing of the first portion to the flange of the cross member refers to fixing the flange on the outer side in the vehicle width direction provided on the first portion, or a part of the first portion, to the flange of the cross member, and this may be done by fastening with bolts, fixing with rivets, or fixing by welding such as spot welding.

[0017] With this invention, the lower body structure of the vehicle is fixed to the cross member in the first portion. Therefore, the rigidity of the console bracket against collision loads from the front of the vehicle input from the tunnel section can be improved. Therefore, the lower body structure of the vehicle can reliably transmit the collision load from the front of the vehicle, which is input from the tunnel section, to the cross member.

[0018] In another aspect of this invention, a flange is provided on the vehicle front side of the cross member, which is fixed to the floor panel, and the second portion may be fixed to the flange of the cross member. The above-mentioned second portion may be fixed to the flange of the cross member by fastening with bolts, fixing with rivets, or fixing by welding such as spot welding.

[0019] With this invention, the lower body structure of the vehicle can connect the second portion to the cross member via a flange provided on the front side of the vehicle, which fixes the cross member to the floor panel. Therefore, the second part can be connected to the cross member with an easy structure and simple assembly.

[0020] Thereby, the lower body structure of the vehicle can input the collision load from the front of the vehicle input from the tunnel portion into the cross member from the flange, and smoothly transmit the load to the rear of the vehicle through the cross member and the side sill.

[0021] As another aspect of the present invention, the upper surface of the tunnel portion has a tunnel inclined portion that inclines upward of the vehicle toward the front of the vehicle, and a tunnel rear portion that is disposed rearward of the vehicle from the tunnel inclined portion and extends along the longitudinal direction of the vehicle. The console bracket is disposed at a position covering a tunnel bent portion formed between the tunnel inclined portion and the tunnel rear portion, and the second part may be connected to the tunnel inclined portion.

[0022] According to the present invention, in the lower body structure of the vehicle, the second part of the console bracket that covers the tunnel portion from above the vehicle in front of the vehicle of the cross member is connected to the tunnel inclined portion, and covers the tunnel bent portion formed between the tunnel inclined portion and the tunnel rear portion.

[0023] Therefore, in the lower body structure of the vehicle, since the inclination angle in the longitudinal section along the longitudinal direction of the vehicle changes between the tunnel inclined portion and the tunnel rear portion where the tunnel bent portion is formed, the rigidity of the tunnel portion in the longitudinal direction of the vehicle tends to decrease. However, the tunnel bent portion where the rigidity tends to decrease is covered by the second part connected to the tunnel inclined portion and the cross member.

[0024] As a result, the lower body structure of the vehicle smoothly transmits the collision load from the front of the vehicle to the rear of the vehicle via the cross member and the side sill from the tunnel portion while reinforcing the tunnel portion, which has low rigidity against the collision load from the front of the vehicle, with the console bracket at the second portion connected to the tunnel inclined portion and the flange of the cross member.

[0025] As an aspect of the present invention, the second portion may have a front portion that extends along the longitudinal direction of the vehicle and is spaced above the vehicle from the upper surface of the tunnel portion, and a rear inclined portion that is disposed rearward of the front portion in the vehicle and is inclined downward toward the vehicle rearward.

[0026] According to the present invention, the lower body structure of the vehicle separates the front portion of the second portion disposed below the vehicle from the upper surface of the first portion above the vehicle, and inclines the rear inclined portion toward the flange of the cross member.

[0027] Therefore, the lower body structure of the vehicle can secure a cross-sectional area along the vehicle width direction in the front portion of the second portion compared to the case where the front portion inclines along the tunnel inclined portion. Thus, the lower body structure of the vehicle can improve the body rigidity against the collision load from the front of the vehicle.

[0028] On the other hand, the lower body structure of the vehicle can relax the connection direction to the cross member by the rear inclined portion of the second portion compared to the case where the rear portion of the console bracket extends in the vertical direction of the vehicle. Thereby, the collision load from the front of the vehicle input from the tunnel inclined portion can be smoothly transmitted to the cross member. Therefore, the lower body structure of the vehicle can smoothly transmit the collision load from the front of the vehicle, which is input to the tunnel section, to the rear of the vehicle via the cross member and the side sill, together with the tunnel section.

[0029] In another aspect of this invention, the bent portion formed between the front portion and the rearward inclined portion may be positioned at different locations in the vehicle's longitudinal direction relative to the tunnel bent portion. With this invention, the lower body structure of the vehicle is such that the bent portion of the console bracket, which has low rigidity against the collision load at the front of the vehicle, and the bent portion of the tunnel no longer coincide in the longitudinal direction of the vehicle.

[0030] Therefore, the lower body structure of the vehicle can improve the rigidity of the vehicle body near the tunnel bend with respect to the collision load from the front of the vehicle. As a result, the lower body structure of the vehicle can more efficiently transmit the collision load from the front of the vehicle to the rear of the vehicle.

[0031] In another aspect of this invention, the bent portion formed between the front portion and the rearward inclined portion may be located in front of the vehicle relative to the tunnel bent portion. This invention allows the length of the rearward-sloping portion of the vehicle's lower body structure to be increased.

[0032] Therefore, the inclination angle of the rearward-sloping portion can be made gentler, that is, the angle of the bend in the console bracket can be set to be larger. As a result, the lower body structure of the vehicle can improve the rigidity of the console bracket compared to when the angle of inclination of the rearward inclined portion is steeper. Therefore, the lower body structure of the vehicle can smoothly and efficiently transmit the collision load from the front of the vehicle to the rear of the vehicle.

[0033] In another aspect of this invention, the first portion may overlap with the cross member when viewed from the front-rear direction of the vehicle. With this invention, the lower body structure of the vehicle is such that the first portions of the second portion are positioned on both sides in the vehicle width direction at the front of the cross member.

[0034] Therefore, the lower body structure of the vehicle can approximate the vertical position of the center of gravity axis of the console bracket along the vehicle's longitudinal direction in the vertical cross section of the console bracket in the vehicle's width direction, and the center of gravity axis of the cross member along the vehicle's width direction in the vertical cross section of the cross member in the vehicle's longitudinal direction.

[0035] As a result, the lower body structure of the vehicle can smoothly transmit the collision load from the front of the vehicle between the second portion connected via the flange and the cross member, and transmit it more efficiently to the rear of the vehicle via the cross member and the side sill.

[0036] Furthermore, in the lower body structure of the vehicle, since the first portions on both sides in the vehicle width direction of the second portion are positioned in front of the vehicle of the cross member, even if the tunnel portion attempts to retract during a frontal collision, the console bracket and the cross member can prevent the tunnel portion from retracting. In this case, the collision load from the front of the vehicle can be transmitted to the cross member via the first portion in addition to the second portion, so the lower body structure of the vehicle can reliably prevent the tunnel portion from retracting.

[0037] In another embodiment of this invention, the first portion may be fixed to the tunnel portion or in the vicinity of the tunnel portion. With this invention, the lower body structure of the vehicle can be fixed to the tunnel section, which is part of the floor panel, or to the vicinity of the tunnel section, by fixing the first portions on both sides in the vehicle width direction of the console bracket.

[0038] As a result, the lower body structure of the vehicle can securely fix the console bracket to the floor panel, and the rigidity of the floor panel and the console bracket can be improved. Therefore, the lower body structure of the vehicle can suppress vibrations occurring in the console bracket and the floor panel. [Effects of the Invention]

[0039] The present invention provides a vehicle underbody structure that allows for the attachment of console accessories while ensuring desired frontal impact performance. [Brief explanation of the drawing]

[0040] [Figure 1] An external perspective view showing the appearance of the lower part of the vehicle body as seen from the rear. [Figure 2] A plan view showing the external appearance of the lower body of a vehicle in a top-down view. [Figure 3] Enlarged plan view of the main part in Figure 2. [Figure 4] An external perspective view showing the appearance of key parts of the lower body of the vehicle from a rearward view. [Figure 5] An explanatory diagram showing the cross-sectional view as indicated by the arrow in Figure 3. [Figure 6] Cross-sectional view taken along arrow AA in Figure 2. [Modes for carrying out the invention]

[0041] One embodiment of this invention will be described below with reference to the drawings. The vehicle of this embodiment is, for example, a vehicle equipped with a tunnel section extending in the longitudinal direction of the vehicle, located approximately in the center of the floor panel in the vehicle width direction. The lower body structure in the passenger compartment of such a vehicle 1 will be described in detail with reference to Figures 1 to 6.

[0042] Figure 1 shows an external perspective view of the lower body of vehicle 1 from a rearward perspective, Figure 2 shows a plan view of the lower body of vehicle 1, Figure 3 shows an enlarged plan view of the main part shown in Figure 2, Figure 4 shows an external perspective view of the main part of the lower body of vehicle 1 from a rearward perspective, Figure 5 shows an explanatory diagram of the cross-sectional view taken along the arrow in Figure 3, and Figure 6 shows a cross-sectional view of the main part taken along arrow AA in Figure 2. More specifically, Figure 5(a) shows a cross-sectional view taken along the arrow BB in Figure 3, Figure 5(b) shows a cross-sectional view taken along the arrow CC in Figure 3, and Figure 5(c) shows a cross-sectional view taken along the arrow DD in Figure 3.

[0043] Furthermore, in the diagram, arrows Fr and Rr indicate the front-rear direction, with Fr indicating the front and Rr indicating the rear. Additionally, arrows Rw and Lw indicate the vehicle width direction, with Rw indicating the right direction and Lw indicating the left direction. Moreover, arrows Uh and Dh indicate the vehicle's vertical direction, with Uh indicating the top of the vehicle and Dh indicating the bottom of the vehicle.

[0044] As shown in Figures 1 and 2, the lower body of vehicle 1 includes a dash panel 2 that separates the engine compartment from the passenger compartment in the longitudinal direction of the vehicle, a pair of left and right side sills 3 that extend from the lower ends of both ends of the dash panel 2 in the vehicle width direction toward the rear of the vehicle, and a front floor panel 4 that is positioned between the left and right side sills 3 and forms the floor surface of the passenger compartment.

[0045] Furthermore, as shown in Figures 1 and 2, the lower body of vehicle 1 has a tunnel section 5 that bulges out in a roughly tunnel shape extending from the front to the rear of the vehicle near the approximate center in the width direction of the vehicle, and floor cross members 20, 30, and 40 are provided near the center in the longitudinal direction of the vehicle. In addition, a console bracket 10 is provided in a manner that covers the tunnel section 5, located in front of the first floor cross member 20.

[0046] Furthermore, the lower body of vehicle 1 is provided with a first floor cross member 20, a second floor cross member 30, and a third floor cross member 40 in this order from the front to the rear of the vehicle, connecting the left and right side sills 3 in the vehicle width direction.

[0047] Specifically, the dash panel 2 is a panel member having thickness in the front-to-rear direction of the vehicle, and its lower part is formed in a curved shape toward the rear of the vehicle. A front floor panel 4 is provided extending toward the rear of the vehicle from the lower end of this dash panel 2.

[0048] The side sills 3 are a pair of left and right sills that extend from the lower ends of both sides in the vehicle width direction of the dash panel 2 toward the rear of the vehicle, and their cross-sectional shape in the longitudinal section along the vehicle width direction is configured to form a closed section with a substantially rectangular cross-section. More specifically, the side sill 3 is composed of a roughly hat-shaped side sill outer (not shown) that protrudes outward in the vehicle width direction and a roughly hat-shaped side sill inner (not shown) that protrudes inward in the vehicle width direction.

[0049] As shown in Figures 1 to 5, the front floor panel 4 is a substantially flat panel member having thickness in the vertical direction of the vehicle, and its front end is connected to the lower end of the dash panel 2. Furthermore, the front of the front floor panel 4 is designed as a floor inclined section 4a that slopes upwards towards the front of the vehicle, towards the dash panel 2.

[0050] Furthermore, a tunnel section 5 is formed approximately in the center of the front floor panel 4 in the vehicle width direction, projecting upwards toward the vehicle. Furthermore, the tunnel section 5 is joined to the dash panel 2 at its front end, and its upper surface slopes downward towards the rear of the vehicle towards the first floor cross member 20, which will be described later.

[0051] More specifically, the upper surface of the tunnel section 5 has a tunnel inclined section 51 that slopes downward towards the rear of the vehicle, located in front of the first floor cross member 20 (described later), and a rear tunnel section 52 that is located behind the tunnel inclined section 51 and extends substantially horizontally along the longitudinal direction of the vehicle, with the section between the tunnel inclined section 51 and the rear tunnel section 52 being the tunnel bend section 53. The upper surface of the rear tunnel section 52 is positioned above the vehicle at a predetermined height relative to the front floor panel 4. The upper part of this tunnel section 5 has a pair of left and right ridge sections 5a that extend in the front-rear direction of the vehicle, spaced apart at a predetermined interval in the vehicle width direction.

[0052] The floor cross members 20, 30, and 40 span the rear portion 52 of the tunnel section 5 that extends in the longitudinal direction of the vehicle, connecting the left and right pair of side sills 3 in the vehicle width direction, and are arranged in this order from the front to the rear of the vehicle. In other words, the floor cross members 20, 30, and 40 connect the left and right side sills 3 in a nearly linear fashion at a position near the center of the front floor panel 4 in the longitudinal direction of the vehicle. The floor cross members 20, 30, and 40 are formed in a roughly M-shaped cross section that extends in the vehicle width direction.

[0053] As shown in Figures 1 and 2, the first floor cross member 20 is positioned in front of the second floor cross member 30 and is provided to extend in the vehicle width direction, straddling the tunnel section 5. Furthermore, the first floor cross member 20 has a straddling portion 21 in the center in the vehicle width direction that straddles the tunnel section 5. The straddling portion 21 is formed to rise above the vehicle compared to other parts along the tunnel section 5. The first floor cross member 20 also has four seat brackets 60 for attaching front seats (not shown) on the outer side of the straddling portion 21 in the vehicle width direction and on both ends of the first floor cross member 20 in the vehicle width direction, and is joined to a pair of left and right side sills 3 at the seat brackets 60 at both ends in the vehicle width direction. The seat brackets 60 and the side sills 3 are fixed together by welding, such as spot welding.

[0054] Furthermore, the first floor cross member 20 has cross member flanges 22 on both sides in the vehicle's longitudinal direction that are aligned with the vehicle's width direction and extend in the vehicle's longitudinal direction, and these cross member flanges 22 are joined and fixed to the front floor panel 4. The cross member flanges 22 are fixed to the upper surface of the side sill 3 by spot welding or the like. In addition, the cross member flanges 22 of the straddling portion 21 of the first floor cross member 20 are joined and fixed to the tunnel portion 5 that constitutes the front floor panel 4.

[0055] More specifically, of the cross member flanges 22 in the longitudinal direction of the vehicle, the front flange 22a located at the front of the vehicle is directly fixed to the front floor panel 4, and the rear flange 22b located at the rear of the vehicle is positioned above the front flange 32a of the second floor cross member 30 (described later) and is fixed to the upper surface of the front floor panel 4 via the front flange 32a.

[0056] Therefore, the first floor cross member 20 is formed in a shape that, in a longitudinal section along the vehicle's longitudinal direction, forms a closed section extending in the vehicle's width direction together with the front floor panel 4. In addition, the upper surface of the first floor cross member 20 joined to the side sill 3 and the upper surface of the side sill 3 are at approximately the same height.

[0057] Furthermore, as shown in Figures 1 and 2, the second floor cross member 30 is positioned behind the first floor cross member 20 and in front of the third floor cross member 40, and is provided to extend in the vehicle width direction, straddling the tunnel section 5.

[0058] Furthermore, the second floor cross member 30, like the first floor cross member 20, has a straddling portion 31 in the center in the vehicle width direction that straddles the tunnel section 5. The straddling portion 31 is formed to protrude upwards above the vehicle compared to other parts along the tunnel section 5. The second floor cross member 30 is also provided with a pair of gussets 61 at both ends in the vehicle width direction for joining to the side sills 3, and is joined to a pair of left and right front floor panels 4 by the gussets 61 at both ends in the vehicle width direction. The gussets 61 and the side sills 3 are fixed together by welding, such as spot welding.

[0059] Furthermore, the second floor cross member 30 has cross member flanges 32 on both sides in the vehicle's longitudinal direction, which are aligned with the vehicle's width and extend in the vehicle's longitudinal direction. These cross member flanges 32 are joined and fixed to the front floor panel 4. The cross member flanges 32 are fixed to the upper surface of the side sill 3 by spot welding or the like.

[0060] More specifically, of the cross member flanges 32 in the longitudinal direction of the vehicle, the front flange 32a located at the front of the vehicle is covered by the rear flange 22b of the first floor cross member 20 and fixed to the front floor panel 4, as described above. The rear flange 32b located at the rear of the vehicle is positioned above the front flange 42a of the third floor cross member 40, which will be described later, and is fixed to the upper surface of the front floor panel 4 via the front flange 42a.

[0061] Therefore, the second floor cross member 30 is formed in a shape that, in a longitudinal section along the vehicle's longitudinal direction, forms a closed section extending in the vehicle's width direction together with the front floor panel 4. In addition, the upper surface of the second floor cross member 30, which is joined to the side sill 3, and the upper surface of the side sill 3 are at approximately the same height.

[0062] As shown in Figures 1 and 2, the third floor cross member 40 is positioned behind the second floor cross member 30 and extends in the vehicle width direction, straddling the tunnel section 5. Furthermore, the third floor cross member 40 has a straddling portion 41 in the center in the vehicle width direction that straddles the tunnel section 5. The straddling portion 41 is formed to rise higher on the vehicle than other parts along the tunnel section 5. The third floor cross member 40 also has four seat brackets 60 for attaching front seats (not shown) on the outer side of the straddling portion 41 in the vehicle width direction and on both ends of the third floor cross member 40 in the vehicle width direction, and the seat brackets 60 at both ends in the vehicle width direction are joined to a pair of left and right side sills 3. The seat brackets 60 and the side sills 3 are fixed together by welding, such as spot welding.

[0063] Furthermore, the third floor cross member 40 has cross member flanges 42 on both sides in the vehicle's longitudinal direction, which are aligned with the vehicle's width direction and extend in the vehicle's longitudinal direction. These cross member flanges 42 are joined and fixed to the front floor panel 4. The cross member flanges 42 are fixed to the upper surface of the side sill 3 by spot welding or the like.

[0064] More specifically, of the cross member flanges 42 in the longitudinal direction of the vehicle, the front flange 42a located at the front of the vehicle is covered by the rear flange 32b of the second floor cross member 30 and fixed to the front floor panel 4, as described above, while the rear flange 42b located at the rear of the vehicle is directly fixed to the upper surface of the front floor panel 4.

[0065] Therefore, the third floor cross member 40 is formed in a shape that, in a longitudinal section along the vehicle's longitudinal direction, forms a closed section extending in the vehicle width direction together with the front floor panel 4. In addition, the upper surface of the third floor cross member 40, which is joined to the side sill 3, and the upper surface of the side sill 3 are at approximately the same height.

[0066] The console bracket 10 is a bracket for mounting console accessories (not shown), and is positioned in the vehicle's longitudinal direction to cover the upper part of the tunnel section 5 from near the center of the tunnel inclined portion 51 to the front of the first floor cross member 20. The console accessories include a shift lever, an operation receiver (button), a rotary operation receiver, or members that support these.

[0067] As shown in Figure 5, the console bracket 10 has a pair of left and right ridge portions 10a extending in the front-rear direction of the vehicle, spaced at a predetermined interval in the vehicle width direction, formed on its upper part, and in a longitudinal section along the vehicle width direction, it is formed in a substantially inverted concave shape with an open cross-section that is open to the lower part of the vehicle.

[0068] More specifically, the console bracket 10 comprises a pair of first parts 11 having ridges 10a and positioned on both outer sides in the vehicle width direction in a longitudinal cross section along the vehicle width direction, and a second part 12 positioned between the first parts 11 and positioned below the upper surface 111 of the first parts 11.

[0069] The first part 11 has, in a longitudinal section along the vehicle width direction, a substantially horizontal upper surface portion 111, an outer surface portion 112 extending downward from the vehicle on the outside of the upper surface portion 111 in the vehicle width direction, and an inner surface portion 113 extending downward from the vehicle on the inside of the upper surface portion 111 in the vehicle width direction. In addition, a bracket flange 114 is provided at the lower end of the outer surface portion 112 for fixing to the side surface of the tunnel portion 5 which constitutes part of the front floor panel 4.

[0070] Furthermore, a ridge portion 10a is formed at the corner between the upper surface portion 111 and the outer surface portion 112, and also at the corner between the upper surface portion 111 and the inner surface portion 113. In addition, the ridge portion 10a formed at the corner between the upper surface portion 111 and the outer surface portion 112 will follow the ridge portion 5a of the tunnel portion 5, as will be described later.

[0071] As shown in Figure 4, the upper surface portion 111 has a first front portion 115 that is substantially horizontal in the longitudinal direction of the vehicle, a first inclined portion 116 that slopes downward in a substantially stepped manner toward the rear of the vehicle, and a first rear portion 117 that is substantially horizontal in the longitudinal direction of the vehicle. The first inclined portion 116 that slopes downward in a substantially stepped manner toward the rear of the vehicle has two substantially horizontal mounting portions 116a that are spaced apart in the longitudinal direction of the vehicle. However, the ridge portion 10a passing through the substantially horizontal mounting portions 116a is formed to be smoothly continuous. In addition, weld bolts 118 that protrude upward from the vehicle are provided on the horizontal mounting portions 116a of the first inclined portion 116 and the first rear portion 117 for attaching console accessories.

[0072] Furthermore, the outer surface portion 112 of the first portion 11, which is on the outer side in the vehicle width direction, is provided with a rib 119 that bulges outward in the vehicle width direction and extends in the vertical direction of the vehicle. More specifically, on the outer surface portion 112, multiple ribs 119 are provided at predetermined intervals in the vehicle's longitudinal direction, corresponding to the first inclined portion 116 and the first rear portion 117 on the upper surface portion 111.

[0073] Furthermore, the inner surface portion 113 is an inclined surface that slopes inward in the vehicle width direction towards the lower part of the vehicle, and is formed such that the length in the inclined direction increases towards the rear of the vehicle from the first front portion 115.

[0074] The second part 12 is formed substantially horizontally in a longitudinal cross-section along the vehicle width direction, so as to connect the lower ends of the inner surface portions 113 of the first part 11, which are provided on both sides in the vehicle width direction, in the vehicle width direction. Therefore, the second part 12 is positioned above the upper surface of the tunnel section 5 and below the upper surface portion 111 of the first part 11. As shown in Figure 6, the second part 12 has a second front part 121 that is substantially horizontal in the longitudinal direction of the vehicle, and a second rearward inclined part 122 that slopes downward towards the rear of the vehicle.

[0075] More specifically, the second front portion 121 of the second portion 12 corresponds to the first front portion 115 of the first portion 11 in the vehicle's longitudinal direction, and the second rearward inclined portion 122 is formed in a position corresponding to the first inclined portion 116 and the first rearward portion 117 of the first portion 11. Furthermore, the space between the second front portion 121 and the second rearward inclined portion 122 is designated as the bracket bend portion 123.

[0076] Furthermore, the second part 12 is joined to the tunnel inclined portion 51 in the tunnel section 5 at the front end of the second front part 121, and to the front flange 22a of the straddling portion 21 of the first floor cross member 20, which is joined and fixed to the tunnel section 5 at the rear end of the second rear inclined portion 122. The second part 12, the tunnel inclined portion 51, and the front flange 22a are fixed together by welding, such as spot welding.

[0077] Furthermore, a bracket flange 114 provided at the lower end of the outer surface portion 112 of the first portion 11 is joined and fixed to the lower side of the tunnel portion 5, which constitutes part of the front floor panel 4. The rear end of the bracket flange 114 is joined and fixed to the front flange 22a of the straddling portion 21 of the first floor cross member 20, which is joined and fixed to the tunnel portion 5. In addition, the bracket flange 114 and the side of the tunnel portion 5 are fixed together by welding, such as spot welding.

[0078] Therefore, the console bracket 10, configured as described above, with the second portion 12 fixed to the tunnel section 5 and the front flange 22a of the first floor cross member 20, is fixed in the longitudinal direction of the vehicle so as to cover the upper part of the tunnel section 5 from near the center of the tunnel inclined portion 51 in the tunnel section 5 to the front of the first floor cross member 20.

[0079] At this time, as shown in Figures 1 to 3, the console bracket 10 is positioned such that the ridge portion 10a formed on the outer side in the vehicle width direction of the first portion 11 follows the ridge portion 5a of the tunnel portion 5. Furthermore, as shown in Figures 3 and 6, the console bracket 10 is positioned at a slight distance from the front of the first floor cross member 20 in the longitudinal direction of the vehicle, and the bracket bend portion 123 of the second portion 12 is positioned in front of the vehicle relative to the tunnel bend portion 53 of the tunnel portion 5.

[0080] Furthermore, although the console bracket 10 has an open cross-sectional shape in the longitudinal section along the vehicle width direction, the bracket flange 114 provided at the tip of the outer surface portion 112 is joined to the side surface of the tunnel portion 5. As a result, the console bracket 10 and the tunnel portion 5 can form a closed cross-section, improving the rigidity of the tunnel portion 5 and the console bracket 10 against collision loads from the front of the vehicle.

[0081] Furthermore, as shown in Figure 5(c), the first portion 11 of the console bracket 10, which is positioned to cover the upper part of the tunnel section 5 above the vehicle, overlaps with the first floor cross member 20, whose straddling portion 21 straddles the tunnel section 5, in the longitudinal direction of the vehicle.

[0082] As described above, the lower body structure of vehicle 1 includes a tunnel section 5 formed at the center of the front floor panel 4 in the vehicle width direction, which protrudes upward from the vehicle and has a pair of left and right ridge sections 5a extending in the vehicle longitudinal direction, a pair of left and right side sills 3 extending in the vehicle longitudinal direction at both ends of the front floor panel 4 in the vehicle width direction, a first floor cross member 20 that connects the left and right side sills 3 in the vehicle width direction across the tunnel section 5 and is fixed to the upper surface of the front floor panel 4, and a console bracket 10 that covers the tunnel section 5 from above the vehicle at the front of the first floor cross member 20, with an open cross section shape that extends in the vehicle longitudinal direction and has an opening at the bottom of the vehicle. The console bracket 10 has a pair of left and right first parts 11 that protrude upward along a pair of left and right ridges 5a and to which console accessories are attached on the upper surface 111, and a second part 12 that is located between the pair of left and right first parts 11 and is located below the upper surface 111 of the first parts 11. The second part 12 is fixed to the tunnel part 5 and the first floor cross member 20.

[0083] Therefore, the lower body structure of vehicle 1 can accommodate console accessories while ensuring the desired frontal impact performance. Specifically, the lower body structure of the vehicle 1 includes a tunnel section 5 formed at the center of the front floor panel 4 in the vehicle width direction, which protrudes upward from the vehicle and has a pair of left and right ridge sections 5a extending in the vehicle longitudinal direction, a pair of left and right side sills 3 extending in the vehicle longitudinal direction are connected in the vehicle width direction across the tunnel section 5, and a first floor cross member 20 fixed to the upper surface of the front floor panel 4, and a console bracket 10 with an open cross section shape that covers the tunnel section 5 from above the vehicle in front of the first floor cross member 20 and extends in the vehicle longitudinal direction with an opening at the bottom of the vehicle.

[0084] Furthermore, the console bracket 10 has a pair of left and right first parts 11 that protrude upward along a pair of left and right ridges 5a of the tunnel section 5 and to which console accessories held by the console are attached to the upper surface 111, and a second part 12 that is located between the pair of left and right first parts 11 and is located below the upper surface 111 of the first parts 11.

[0085] Therefore, the pair of left and right first parts 11 protrude upward along the pair of left and right ridges 5a of the tunnel section 5 that protrudes upward above the vehicle, and their upper surfaces 111 can be positioned at a predetermined height relative to the front floor panel 4. Therefore, console accessories attached to the upper surface 111 of the first part 11 can be held at an appropriate height.

[0086] On the other hand, the second part 12, which is located between the pair of left and right first parts 11 and below the upper surface 111 of the first part 11, is fixed to the tunnel part 5 and the first floor cross member 20. As a result, the tunnel part 5 and the first floor cross member 20 are connected in a load-transmission manner without affecting the mounting of console accessories.

[0087] Therefore, the lower body structure of vehicle 1, in cooperation with the tunnel section 5, allows the console bracket 10 to function as a load transmission member that smoothly transmits the collision load from the front of the vehicle to the rear of the vehicle via the first floor cross member 20 and the side sill 3. As a result, the lower body structure of the vehicle 1, which includes a console bracket 10 having a second portion 12 fixed to the tunnel section 5 and the first floor cross member 20, can mount console accessories at a predetermined height and ensure the desired frontal impact performance.

[0088] Furthermore, a front flange 22a is provided on the front side of the first floor cross member 20, which is fixed to the front floor panel 4, and the first portion 11 is fixed to the front flange 22a of the first floor cross member 20. Specifically, the rear end of a bracket flange 114 provided at the lower end of the outer surface portion 112 of the first portion 11 is joined and fixed to the front flange 22a of the first floor cross member 20.

[0089] Therefore, the lower body structure of vehicle 1 is fixed to the first floor cross member 20 by fixing the first part 11. Thus, the rigidity of the console bracket 10 against collision loads from the front of the vehicle input from the tunnel section 5 can be improved. Therefore, the lower body structure of vehicle 1 can reliably transmit the collision load from the front of the vehicle, input from the tunnel section 5, to the first floor cross member 20.

[0090] Furthermore, a front flange 22a is provided on the front side of the first floor cross member 20, which is fixed to the front floor panel 4, and the second portion 12 is fixed to the front flange 22a of the first floor cross member 20.

[0091] Therefore, the lower body structure of vehicle 1 can join the second portion 12 to the first floor cross member 20 via a front flange 22a provided on the front side of the vehicle, which fixes the first floor cross member 20 to the front floor panel 4. Therefore, the second part 12 can be connected to the first floor cross member 20 with a simple structure and easy assembly.

[0092] As a result, the lower body structure of vehicle 1 can input the collision load from the front of the vehicle, which is input from the tunnel section 5, to the first floor cross member 20 via the cross member flange 22, and smoothly transmit the load to the rear of the vehicle via the first floor cross member 20 and the side sill 3.

[0093] Furthermore, the upper surface of the tunnel section 5 has a tunnel inclined portion 51 that slopes upward towards the front of the vehicle, and a tunnel rear portion 52 that is positioned behind the tunnel inclined portion 51 and extends along the longitudinal direction of the vehicle. The console bracket 10 is positioned to cover the tunnel bend 53 formed between the tunnel inclined portion 51 and the tunnel rear portion 52, and the second portion 12 is connected to the tunnel inclined portion 51.

[0094] Therefore, the lower body structure of vehicle 1 is such that the second portion 12 of the console bracket 10, which covers the tunnel section 5 from above the vehicle at the front of the first floor cross member 20, is connected to the tunnel inclined section 51, and also covers the tunnel bend 53 formed between the tunnel inclined section 51 and the rear section 52 of the tunnel.

[0095] Therefore, in the lower body structure of vehicle 1, the angle of inclination in the longitudinal section along the vehicle's longitudinal direction changes between the tunnel inclined section 51 where the tunnel bend 53 is formed and the rear section 52 of the tunnel. As a result, the rigidity of the tunnel section 5 in the vehicle's longitudinal direction tends to decrease. However, the tunnel bend 53, which is prone to reduced rigidity, is covered by the second section 12, which is connected to the tunnel inclined section 51 and the first floor cross member 20.

[0096] As a result, the lower body structure of vehicle 1 is reinforced by the console bracket 10 in the tunnel section 5, which has low rigidity against collision loads from the front of the vehicle, and the second section 12, which is connected to the tunnel inclined section 51 and the cross member flange 22 of the first floor cross member 20, can smoothly transmit the collision load from the front of the vehicle from the tunnel section 5 to the rear of the vehicle via the first floor cross member 20 and the side sill 3.

[0097] Furthermore, the second portion 12 extends along the longitudinal direction of the vehicle and includes a second front portion 121 that is spaced apart above the vehicle from the upper surface of the tunnel portion 5, and a second rearward inclined portion 122 that is positioned behind the second front portion 121 and inclined downward towards the rear of the vehicle.

[0098] Therefore, the lower body structure of vehicle 1 is such that the second front portion 121 of the second portion 12, which is located below the upper surface portion 111 of the first portion 11, is spaced apart from the upper surface of the tunnel portion 5 and upward of the vehicle, and the second rearward inclined portion 122 is inclined toward the cross member flange 22 of the first floor cross member 20.

[0099] Therefore, the lower body structure of vehicle 1 can secure a cross-sectional area along the vehicle width direction in the second front portion 121 of the second portion 12, compared to the case where the second front portion 121 is inclined along the tunnel inclined portion 51. Consequently, the lower body structure of vehicle 1 can improve the body rigidity against collision loads from the front of the vehicle.

[0100] On the other hand, the lower body structure of vehicle 1, with the second rearward inclined portion 122 of the second portion 12, allows for a gentler connection direction to the first floor cross member 20 compared to the case where the rear portion of the console bracket 10 extends in the vertical direction of the vehicle. This allows for a smooth transmission of the collision load from the front of the vehicle, input from the tunnel inclined portion 51, to the first floor cross member 20.

[0101] Therefore, the lower body structure of vehicle 1 can smoothly transmit the collision load from the front of the vehicle, which is input to the tunnel section 5, to the rear of the vehicle together with the tunnel section 5 via the first floor cross member 20 and the side sill 3.

[0102] Furthermore, the bracket bend 123 formed between the second front portion 121 and the second rearward inclined portion 122 is positioned at a different location in the vehicle longitudinal direction relative to the tunnel bend 53. Therefore, in the lower body structure of vehicle 1, the bracket bend portion 123 of the console bracket 10, which has low rigidity against collision loads from the front of the vehicle, and the tunnel bend portion 53 no longer coincide in the longitudinal direction of the vehicle.

[0103] Therefore, the lower body structure of vehicle 1 can improve the body rigidity near the tunnel bend 53 against collision loads at the front of the vehicle. As a result, the lower body structure of vehicle 1 can more efficiently transmit the collision load from the front of the vehicle to the rear of the vehicle.

[0104] Furthermore, the bracket bend 123 formed between the second front portion 121 and the second rearward inclined portion 122 is located in front of the tunnel bend 53. Therefore, the lower body structure of vehicle 1 can be configured to have a longer second rearward inclined section 122.

[0105] Therefore, the inclination angle of the second rearward inclined portion 122 can be made gentler, that is, the angle of the bracket bend portion 123 in the console bracket 10 can be set to be larger. As a result, the lower body structure of vehicle 1 can improve the rigidity of the console bracket 10 compared to when the inclination angle of the second rearward inclined section 122 is steeper. Therefore, the lower body structure of vehicle 1 can smoothly and efficiently transmit the collision load from the front of the vehicle to the rear of the vehicle.

[0106] Furthermore, the first part 11 overlaps with the first floor cross member 20 when viewed from the front-rear direction of the vehicle. Therefore, in the lower body structure of vehicle 1, the first parts 11 on both sides in the vehicle width direction of the second part 12 are positioned at the front of the first floor cross member 20.

[0107] Therefore, the lower body structure of vehicle 1 can approximate the vertical position of the center of gravity axis of the console bracket 10 along the vehicle's longitudinal direction in the vertical cross section of the console bracket 10 in the vehicle's width direction, and the center of gravity axis of the first floor cross member 20 along the vehicle's width direction in the vertical cross section of the first floor cross member 20 in the vehicle's longitudinal direction.

[0108] As a result, the lower body structure of vehicle 1 can smoothly transmit collision loads from the front of the vehicle between the second portion 12 and the first floor cross member 20, which are connected via the cross member flange 22, and transmit them more efficiently to the rear of the vehicle via the first floor cross member 20 and the side sill 3.

[0109] Furthermore, in the lower body structure of vehicle 1, the first parts 11 on both sides in the vehicle width direction of the second part 12 are positioned in front of the first floor cross member 20. Therefore, even if the tunnel section 5 attempts to move backward during a frontal collision, the console bracket 10 and the first floor cross member 20 can prevent the tunnel section 5 from moving backward. In this case, the collision load from the front of the vehicle can be transmitted to the first floor cross member 20 via the first part 11 in addition to the second part 12, so the lower body structure of vehicle 1 can reliably prevent the tunnel section 5 from moving backward.

[0110] As shown in Figure 5, the inner surface portion 113 of the first portion 11 is formed as an inclined surface that slopes inward in the vehicle width direction towards the lower part of the vehicle, and the length of the inclination of the inner surface portion 113 is formed to increase towards the rear of the vehicle. Therefore, in the longitudinal section along the vehicle width direction, the length of the first portion 11 in the vehicle width direction towards the lower part of the vehicle increases, while the length of the second portion 12 in the vehicle width direction decreases. As a result, when viewed from the front-rear direction of the vehicle, the overlapping area between the first portion 11 of the console bracket 10 and the first floor cross member 20 increases. Thus, the above-mentioned effects can be achieved more reliably.

[0111] Furthermore, the second portion 12, which is fixed to the tunnel section 5 and the first floor cross member 20 and transmits the collision load from the front of the vehicle, has a shorter length in the vehicle width direction in the longitudinal section along the vehicle width direction, as described above. As a result, the cross-sectional strength of the second portion 12 in the longitudinal section along the vehicle width direction, which is perpendicular to the vehicle longitudinal direction, which is the load transmission direction, can be improved compared to the wider second portion. Therefore, the second portion 12 can transmit the collision load from the tunnel section 5 to the first floor cross member 20 more efficiently.

[0112] Furthermore, as shown in Figure 4, a horizontal mounting portion 116a is provided on the first inclined portion 116 of the upper surface portion 111 of the first portion 11, and the ridge portion 10a passing through the nearly horizontal mounting portion 116a is formed to be smoothly continuous. As a result, the console bracket 10 can function as a load transmission member that works in cooperation with the tunnel portion 5 to more smoothly transmit collision loads from the front of the vehicle to the rear of the vehicle via the first floor cross member 20 and the side sill 3.

[0113] Furthermore, the first part 11 is fixed to the tunnel section 5. Specifically, a bracket flange 114 provided at the lower end of the outer surface portion 112 of the first part 11 is joined and fixed to the side surface of the tunnel section 5.

[0114] Therefore, the lower body structure of vehicle 1 can fix the first portions 11 on both sides in the vehicle width direction of the console bracket 10 to the tunnel portion 5, which is part of the front floor panel 4, or to the vicinity of the tunnel portion 5.

[0115] As a result, the lower body structure of vehicle 1 can securely fix the console bracket 10 to the front floor panel 4, and the rigidity of both the front floor panel 4 and the console bracket 10 can be improved. Therefore, the lower body structure of vehicle 1 can suppress vibrations occurring in the console bracket 10 and the front floor panel 4.

[0116] Furthermore, ribs 119 are provided on the inner surface portion 113 of the first portion 11 located on both sides of the console bracket 10 in the vehicle width direction. This improves the shape retention of the inner surface portion 113. As a result, the rigidity of the console bracket 10 is improved, and the rigidity of the front floor panel 4 to which the console bracket 10 is fixed by the bracket flange 114 is also improved. Therefore, the shape retention of the console bracket 10 and the front floor panel 4 can be improved, and vibration suppression effects can be achieved when membrane vibration occurs in the console bracket 10 or the front floor panel 4.

[0117] Furthermore, as shown in Figures 3 and 6, a small gap is provided between the rear end of the console bracket 10 and the front surface of the first floor cross member 20 in the longitudinal direction of the vehicle. Therefore, the console bracket 10, which is positioned from near the center of the tunnel inclined portion 51 in the tunnel section 5 to the front of the first floor cross member 20 in the longitudinal direction of the vehicle and covers the upper part of the tunnel section 5, can be assembled more easily.

[0118] In the correspondence between the structure of this invention and the embodiments described above, The floor panel of this invention corresponds to the front floor panel 4. The same applies to the following: The cross member corresponds to the first floor cross member 20, The top surface corresponds to the top surface portion 111. The flange corresponds to the cross member flange 22. The front section corresponds to the second front section 121, The rearward-sloping portion corresponds to the second rearward-sloping portion 122. The bent portion corresponds to the bracket bent portion 123, This invention is not limited to the configuration of the embodiments described above, and many other embodiments can be obtained.

[0119] For example, in the embodiment described above, the bracket flange 114 provided at the lower end of the outer surface portion 112 of the first portion 11 was joined and fixed to the lower side of the tunnel portion 5, but it may also be fixed to a portion adjacent to the tunnel portion 5 on the outer side in the vehicle width direction.

[0120] Although the second part 12 described above was fixed to the tunnel inclined portion 51 of the tunnel section 5 and the front flange 22a of the first floor cross member 20, it may also be fixed directly to the rear tunnel portion 52 of the tunnel section 5 or to the main body of the first floor cross member 20.

[0121] Furthermore, the cross member flanges 22, 32, 42 of the floor cross members 20, 30, 40 and the bracket flange 114 and second part 12 of the first part 11 were joined and fixed by welding such as spot welding, but they may also be fixed by fastening with bolts, fixing with rivets, or fixing by welding such as spot welding. [Explanation of Symbols]

[0122] 1…Vehicle 3... Side sill 4…Front floor panel 5...Tunnel section 5a...Ridge line 10…Console bracket 11…First part 12…Second part 20…1st Floor Cross Member 22…Cross Member Flange 51...Tunnel slope 52... Rear section of the tunnel 53... Tunnel bend 111...Top part 121…Second front part 122…Second rear inclined part 123...Bracket bending section

Claims

1. At the center of the floor panel in the vehicle width direction, a tunnel section is formed which protrudes upward from the vehicle and has a pair of left and right ridge sections extending in the vehicle's longitudinal direction. At both ends of the floor panel in the vehicle width direction, a pair of left and right side sills extending in the vehicle longitudinal direction, A pair of left and right side sills are connected in the vehicle width direction, spanning the tunnel section, and a cross member is fixed to the upper surface of the floor panel, The cross member comprises a console bracket with an open cross-section that covers the tunnel section from above the vehicle at the front of the vehicle, and has an opening at the bottom of the vehicle and extends in the longitudinal direction of the vehicle. The aforementioned console bracket is A pair of left and right first parts project upward along the aforementioned ridges and to which console accessories are attached on the upper surface, It has a second portion located between a pair of left and right first portions and located below the vehicle from the upper surface of the first portions, The second portion is fixed to the tunnel section and the cross member. The lower body structure of the vehicle.

2. A flange is provided on the vehicle front side of the cross member, which is fixed to the floor panel. The first portion is fixed to the flange of the cross member. The lower body structure of the vehicle according to claim 1.

3. A flange is provided on the vehicle front side of the cross member, which is fixed to the floor panel. The second portion is fixed to the flange of the cross member. The lower body structure of the vehicle according to claim 1.

4. The upper surface of the tunnel section is The tunnel slope section is such that it slopes upward towards the front of the vehicle, It is positioned behind the vehicle from the aforementioned tunnel inclined portion and has a rear tunnel portion that extends along the vehicle's longitudinal direction, The aforementioned console bracket is It is positioned to cover the tunnel bend formed between the aforementioned tunnel inclined portion and the rear portion of the tunnel, The second part is connected to the tunnel inclined portion. The lower body structure of the vehicle according to claim 3.

5. The second part is, The forward portion extends along the longitudinal direction of the vehicle and is spaced apart from the upper surface of the tunnel section above the vehicle, It has a rearward-sloping portion that is positioned further back than the front portion of the vehicle and slopes downward towards the rear of the vehicle. The lower body structure of the vehicle according to claim 4.

6. The bent portion formed between the aforementioned front portion and the aforementioned rearward inclined portion is The tunnel bend is positioned at different locations in the vehicle's longitudinal direction relative to the aforementioned tunnel bend. The lower body structure of a vehicle according to claim 5.

7. The bent portion formed between the aforementioned front portion and the aforementioned rearward inclined portion is Located in front of the vehicle from the aforementioned tunnel bend. The lower body structure of a vehicle according to claim 5.

8. The first part is, When viewed from the front-rear direction of the vehicle, the cross member overlaps with the vehicle. The lower body structure of the vehicle according to claim 1.

9. The first part is, Fixed to the tunnel section or in the vicinity of the tunnel section A lower body structure for a vehicle according to any one of claims 1 to 8.

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