The lower body structure of the vehicle

Abstract

The technical problem of the present invention is to provide a lower body structure of a vehicle that can transfer loads input from the front of the vehicle body due to SORB tests, etc., to the side beams. The lower body structure of vehicle 1 includes a floor panel (4), side beams (6) extending in the front-rear direction of the vehicle body at both ends of the floor panel (4) in the width direction of the vehicle body, a hinge column (7) connected to the side beams (6) and extending up and down at the front end of the side beams (6), and a reinforcement member (65) extending in the front-rear direction of the vehicle body within the side beams (6) and fastened to the hinge column (7) via a fastening member (66).

Description

Technical Field

[0001] This invention relates to a lower body structure of a vehicle. Background Technology

[0002] Patent Document 1 discloses a lower body structure for a vehicle, in which a side beam reinforcement is disposed within a side sill extending in the longitudinal direction on the lower side of the vehicle body. This side beam reinforcement is arranged in the width direction of the vehicle body and has a closed cross-section extending in the longitudinal direction. The main purpose of the side beam reinforcement disclosed in Document 1 is to promote the absorption of input loads from the sides of the vehicle body.

[0003] It can input loads on the vehicle body, such as those in side overlap rigid barrier (SORB) tests, which are input from the front of the vehicle body while overlapping a portion of the vehicle body in the width direction.

[0004] [Existing Technical Documents] [Patent Documents] [Patent Document 1] US Patent Publication No. 2024-051612. Summary of the Invention

[0005] [The technical problem the invention aims to solve] The front end of the side beam reinforcement in Patent Document 1 terminates inside the side beam, thus preventing the transfer of loads input to the vehicle body from the front due to SORB tests to the side beam, leaving room for improvement.

[0006] The technical problem of this invention is to provide a vehicle lower body structure that can transfer loads input from the front of the vehicle body due to SORB tests, etc., to the side beams.

[0007] Technical means to solve technical problems One aspect of the present invention is a lower body structure of a vehicle, which comprises: Floor panels; Side beams extend along the front-rear direction of the vehicle body at both ends of the floor panel in the vehicle width direction; A hinge pillar, which is connected to the side beam and extends vertically along the front end of the side beam; A reinforcing member extends within the side beam in the longitudinal direction of the vehicle body and is fastened to the hinge column via a fastening connection member.

[0008] According to the present invention, the reinforcement is fastened to the hinge column, thereby enabling the transfer of impact loads input to the hinge column, such as those caused by SORB testing, to the side beams via the reinforcement and the fastening member. This allows the impact loads input to the hinge column to be distributed to the reinforcement, the fastening member, and the side beams, preventing possible cabin deformation caused by hinge column retraction.

[0009] [Invention Effects] According to the vehicle's lower body structure of the present invention, loads input from the front of the vehicle body due to SORB tests, etc., can be transferred to the side beams. Attached Figure Description

[0010] Figure 1 This is a top view of the lower body structure of the vehicle according to an embodiment of the present invention; Figure 2 This is an oblique view of the vehicle from the rear side inside the cabin; Figure 3 This is a side view of the vehicle without showing the body side panels and hinge pillar outer components; Figure 4 This is a side view showing the state of the vehicle's side panels; Figure 5 Enlarged oblique view to reinforce the component and its surroundings; Figure 6 For along Figure 3 A partially enlarged cross-sectional view of the VI-VI line; Figure 7 for Figure 2 Enlarged oblique view of the second reinforcing member and its surrounding area; Figure 8 An enlarged oblique view showing the state of the third reinforcing member has been added; Figure 9 For along Figure 8 A partially enlarged cross-sectional view of the IX-IX line; Figure 10 For along Figure 3 A partially enlarged cross-sectional view of the X-ray. Detailed Implementation

[0011] The details of the lower structure of the vehicle according to the present invention will be described below with reference to the accompanying drawings and various embodiments. In the following description, unless otherwise specified, the terms "front," "rear," "right," "left," "up," and "down" refer to the various directions of the vehicle body when the direction of travel when the vehicle is moving forward is taken as "front."

[0012] Figure 1 This is a top view of a car 1 having the lower (side) structure of the vehicle according to this embodiment, without showing the outer side panels and hinge pillar outer parts. Figure 1 As shown, the automobile 1 has a front bulkhead 2, a pair of left and right front side frames 3, a floor panel 4, a toe plate 5, a pair of left and right side beams 6, and a pair of left and right hinge pillars 7.

[0013] The front bulkhead 2 is a plate member that extends in the width direction of the vehicle body and separates the passenger compartment C and the drive source compartment E, which houses the drive source such as the motor, in the longitudinal direction of the vehicle body. Pairs of left and right front side frames 3 extend along the longitudinal direction of the vehicle body on both sides of the front of the vehicle body in the width direction. The pair of left and right front side frames 3 extend forward from the front bulkhead 2. The drive source compartment E is located between the pair of left and right front side frames 3.

[0014] like Figure 2 As shown, the floor panel 4 is a component that forms the floor of the cabin space. A toe plate 5 is mounted across the front bulkhead 2 and the floor panel 4. The toe plate 5 is angled towards the front of the vehicle and towards the upper part of the vehicle body. The rear end of the toe plate 5 is joined to the front end of the floor panel 4, for example, by welding, and the front end of the toe plate 5 is joined to the lower end of the front bulkhead 2, for example, by welding.

[0015] The toe plate 5 has a main body 51 extending along the width of the vehicle body and forming the ground under the feet of the passengers, and flange portions 52 extending upward from both ends of the main body 51 in the width direction of the vehicle body. The flange portions 52 are joined to the left and right pairs of hinge pillars 7 by welding, for example. In other words, the toe plate 5 is located on the inner side of the lower end of the hinge pillars 7.

[0016] The hinge pillars 7 are located on both sides of the front bulkhead 2 in the width direction of the vehicle body and extend in the vertical direction to support the front bulkhead 2. The hinge pillars 7 are connected to the front end of the side beams 6.

[0017] like Figure 3 As shown, the hinge pillar 7 includes: a hinge pillar outer member 71 with a cap-shaped cross-section located on the outer side in the vehicle width direction and opening inward in the vehicle width direction. Figure 4 ), a hinge pillar inner part 72 with a cross-section in the shape of a cap, located inside the width direction of the vehicle body and open to the outside of the width direction of the vehicle body.

[0018] The hinge pillar inner member 72 includes: a side surface portion 72a constituting the inner side of the hinge pillar 7 in the width direction of the vehicle body, a front surface portion 72b constituting the front side of the hinge pillar 7 in the vehicle body, a rear surface portion 72c constituting the rear side of the hinge pillar 7 in the vehicle body, a first flange portion 72d provided on the outer edge of the front surface portion 72b in the width direction of the vehicle body, and a second flange portion 72e provided on the outer edge of the rear surface portion 72c in the width direction of the vehicle body.

[0019] The hinge pillar inner member 72 includes: a main body portion 72A extending in the vertical direction of the vehicle body; a curved portion 72B extending rearward and downward from the lower end of the main body portion 72A; and a rear extension portion 72C extending rearward from the rear end of the curved portion 72B towards the rear of the vehicle body. The curved portion 72B and the rear extension portion 72C constitute the connection between the lower end of the hinge pillar 7 and the front end of the side beam 6. The rear end of the rear extension portion 72C engages with the front end of the inner side beam 61, which will be described later.

[0020] The main body 72A, the curved portion 72B, and the rear extension 72C of the hinge pillar inner member 72 are integrally connected. The side portion 72a, the front surface portion 72b, the rear surface portion 72c, the first flange portion 72d, and the second flange portion 72e constituting the hinge pillar inner member 72 are not only continuously formed in the main body 72A, but also continuously formed in the curved portion 72B and the rear extension 72C. In the curved portion 72B and the rear extension 72C, the front surface portion 72b constitutes the lower surface portion, and the rear surface portion 72c constitutes the upper surface portion.

[0021] Figure 4 The diagram shows the state of the outer side panel and hinge pillar outer component 71 of the automobile 1. Figure 4 As shown, the hinge pillar outer member 71 includes: a side surface portion 71a constituting the outer side of the hinge pillar 7 in the width direction of the vehicle body, a front surface portion 71b constituting the front side of the hinge pillar 7 in the vehicle body, a rear surface portion 71c constituting the rear side of the hinge pillar 7 in the vehicle body, a first flange portion 71d provided on the inner edge portion of the front surface portion 71b in the width direction of the vehicle body, and a second flange portion 71e provided on the inner edge portion of the rear surface portion 71c in the width direction of the vehicle body.

[0022] The outer hinge pillar 71 and the inner hinge pillar 72 are arranged opposite each other on the outer side of the vehicle body in the width direction. The outer hinge pillar 71 and the inner hinge pillar 72 are joined together by the engagement of the first flange portions 71d and 72d and the engagement of the second flange portions 71e and 72e. Thus, a closed section S1 that is continuous in the vertical direction of the vehicle body is formed between the outer hinge pillar 71 and the inner hinge pillar 72. Figure 3 ).

[0023] like Figure 3 As shown, a reinforcing member 81 is provided within the internal space of the hinge column 7, which is surrounded by the hinge column outer member 71 and the hinge column inner member 72. The reinforcing member 81 is positioned on the lower side of the bend 72B relative to the center of the hinge column 7 in the height direction. At least a portion of the reinforcing member 81 overlaps with the vertical position of the front side frame 3.

[0024] like Figure 5 and Figure 6As shown, the reinforcing member 81 includes: a side portion 81a disposed along the side portion 72a of the hinge pillar inner member 72; an upper surface portion 81b extending inward in the width direction of the vehicle body from the upper edge of the side portion 81a; a lower surface portion 81c extending inward in the width direction of the vehicle body from the lower edge of the side portion 81a; an upper flange portion 81d extending upward from the inner end of the upper surface portion 81b; and a lower flange portion 81e extending downward from the inner end of the lower surface portion 81c. The reinforcing member 81 as a whole has a cap-shaped cross-section that opens inward in the width direction when viewed from the front-rear direction of the vehicle body. The upper flange portion 81d and the lower flange portion 81e are joined to the side portion 72a of the hinge pillar inner member 72, for example, by welding.

[0025] like Figure 5 As shown, a forward-extending tongue portion 81f is provided at the front end of the side portion 81a of the reinforcing member 81. The tongue portion 81f is joined to the first flange portion 72d of the hinge pillar inner member 72, for example, by welding. An upward-extending upper tongue portion 81g is provided at the rear end of the upper surface portion 81b of the reinforcing member 81. A rearward-extending lower tongue portion 81h is provided at the rear end of the lower surface portion 81c. The upper tongue portion 81g and the lower tongue portion 81h are joined to the upper surface portion 72c of the bent portion 72B of the hinge pillar inner member 72, for example, by welding. In other words, the rear end of the reinforcing member 81 is fixed to the bent portion 72B.

[0026] Therefore, as Figure 6 As shown, a closed section S2 that is continuous in the longitudinal direction of the vehicle body is formed between the hinge pillar inner member 72 and the reinforcing member 81. In other words, the reinforcing member 81 cooperates with the hinge pillar inner member 72 on the outer side of the cabin below the hinge pillar inner member 72 to form a closed section S2 that extends in the longitudinal direction of the vehicle body.

[0027] like Figure 7 As shown, a second reinforcing member 82 is provided on the inner side of the cabin of the hinge pillar 7 and the front bulkhead 2 (inner side of the hinge pillar 7 in the body width direction). The second reinforcing member 82 is arranged in a cross configuration across the front bulkhead 2 and the hinge pillar inner member 72. At least a portion of the vertical position of the second reinforcing member 82 overlaps with the reinforcing member 81. Figure 6 ).

[0028] The second reinforcing member 82 has a front surface portion 82a opposite to the rear side of the front bulkhead 2, a side surface portion 82b opposite to the inner side of the hinge pillar inner member 72 in the width direction of the vehicle body, and a connecting portion 82c that connects the front surface portion 82a and the side surface portion 82b into one unit.

[0029] The front surface portion 82a of the second reinforcing member 82 is disposed near the front end of the toe plate 5 and the front bulkhead 2, for example, by welding. The vertical dimension of the side portion 82b of the second reinforcing member 82 in the vehicle body direction is larger than that of the front surface portion 82a. The side portion 82b is joined to the hinge pillar inner member 72, for example, by welding.

[0030] The connecting portion 82c extends obliquely and connects the side portion 82b and the front surface portion 82a. The connecting portion 82c extends outward from the front surface portion 82a toward the rear of the vehicle body in the width direction. The connecting portion 82c has two cap-shaped cross-sectional portions that open outward toward the cabin. The two cap-shaped cross-sectional portions have a first cap portion 83 located on the lower side and a second cap portion 84 located above the first cap portion 83.

[0031] In more detail, such as Figure 6 As shown, the first cap portion 83 has the following features in the portion opposite to the hinge pillar inner member 72: a side portion 83a that is spaced apart from the inner side of the hinge pillar inner member 72 in the vehicle width direction; an upper surface portion 83b that extends from the upper edge of the side portion 83a to the outer side in the vehicle width direction; a lower surface portion 83c that extends from the lower edge of the side portion 83a to the outer side in the vehicle width direction; an upper extension portion 83d that extends upward from the outer end of the upper surface portion 83b; and a lower extension portion 83e that extends downward from the outer end of the lower surface portion 83c.

[0032] The second cap portion 84, in the portion opposite to the hinge pillar inner member 72, has: a side portion 84a that is spaced apart from the inner side of the hinge pillar inner member 72 in the vehicle width direction; an upper surface portion 84b extending from the upper edge of the side portion 84a outward in the vehicle width direction; a lower surface portion 84c extending from the lower edge of the side portion 84a outward in the vehicle width direction; an upper extension portion 84d extending upward from the outer end of the upper surface portion 84b; and a lower extension portion 84e extending downward from the outer end of the lower surface portion 84c. In this embodiment, the lower extension portion 84e of the second cap portion 84 is formed by the upper extension portion 83d of the first cap portion 83.

[0033] The connecting portion 82c is joined to the hinge pillar inner member 72 by welding or other means at the upper extensions 83d, 84d and lower extensions 83e, 84e of the first cap portion 83 and the second cap portion 84. This forms a second closed section S3 and a third closed section S4 between the first cap portion 83 and the second cap portion 84 and the hinge pillar inner member 72. In other words, the second reinforcing member 82 and the hinge pillar inner member 72 cooperate to form the second closed section S3 and the third closed section S4 extending in the front-rear direction of the vehicle body. The second closed section S3 overlaps with the closed section S2 of the reinforcing member 81 in the vertical direction. The third closed section S4 is located above the second closed section S3.

[0034] The first cap portion 83 and the second cap portion 84 are integrally connected from the portion opposite to the hinge pillar inner member 72 to the portion opposite to the front bulkhead 2. The first cap portion 83 and the second cap portion 84, which constitute the portion opposite to the hinge pillar inner member 72, are also continuously formed in the portion opposite to the front bulkhead 2.

[0035] like Figure 8 As shown, a third reinforcing member 85 is also provided on the inner side of the hinge pillar 7 in the vehicle body width direction. The third reinforcing member 85 is arranged across the second reinforcing member 82 and the hinge pillar inner member 72.

[0036] The third reinforcing member 85 has a third cap portion 86 and a fourth cap portion 87 that correspond to the first cap portion 83 and the second cap portion 84 of the second reinforcing member 82, respectively. The third cap portion 86 overlaps with the first cap portion 83 from the inside in the width direction of the vehicle body, and the fourth cap portion 87 overlaps with the second cap portion 84 from the inside in the width direction of the vehicle body.

[0037] In more detail, such as Figure 9 As shown, the third cap portion 86 has: a side portion 86a that is spaced apart from the inner side of the hinge column inner member 72 in the vehicle width direction; an upper surface portion 86b that extends from the upper edge of the side portion 86a to the outer side in the vehicle width direction; a lower surface portion 86c that extends from the lower edge of the side portion 86a to the outer side in the vehicle width direction; an upper extension portion 86d that extends upward from the outer end of the upper surface portion 86b; and a lower extension portion 86e that extends downward from the outer end of the lower surface portion 86c.

[0038] The fourth cap portion 87 includes: a side portion 87a that is spaced apart from the inner side of the hinge pillar inner member 72 in the vehicle width direction; an upper surface portion 87b that extends outward from the upper edge of the side portion 87a in the vehicle width direction; a lower surface portion 87c that extends outward from the lower edge of the side portion 87a in the vehicle width direction; an upper extension portion 87d that extends upward from the outer end of the upper surface portion 87b; and a lower extension portion 87e that extends downward from the outer end of the lower surface portion 87c. In this embodiment, the lower extension portion 87e of the fourth cap portion 87 is formed by the upper extension portion 86d of the third cap portion 86.

[0039] like Figure 8 As shown, the third reinforcing member 85 is fastened to the hinge column inner member 72 by bolts or the like at the rear flange portion 85a extending rearward from the rear end portion, the lower flange portion 85b extending downward from the lower extension portion 86e of the third cap portion 86, and the upper flange portion 85c extending upward from the upper extension portion 87d of the fourth cap portion 87. At the front ends of the side portions 86a and 87a of the third cap portion 86 and the fourth cap portion 87, it is fastened to the side portions 83a and 84a of the first cap portion 83 and the second cap portion 84 by bolts or the like.

[0040] Therefore, as Figure 9 As shown, a fourth closed section S5 and a fifth closed section S6 are formed between the third cap portion 86 and the fourth cap portion 87 and the hinge pillar inner member 72. In other words, the third reinforcing member 85 and the hinge pillar inner member 72 cooperate to form the fourth closed section S5 and the fifth closed section S6 extending in the longitudinal direction of the vehicle body. The fourth closed section S5 overlaps with the closed section S2 of the reinforcing member 81 in the vertical direction. The fifth closed section S6 is located above the second and fourth closed sections S3 and S5.

[0041] Closed sections S3, S4, S5, and S6 are formed on the hinge column inner member 72 through the second reinforcing member 82 and the third reinforcing member 85, extending in the front-rear direction across approximately the entire area of ​​the hinge column inner member 72.

[0042] like Figure 2 As shown, the side beam 6 extends along the end of the floor panel 4 in the vehicle width direction in the longitudinal direction. The side beam 6 is formed, for example, by welding together a plurality of sheet metal members. In this embodiment, the side beam 6 has an inner side beam 61 located inside the vehicle width direction and an outer side beam 62 located outside the vehicle width direction. The side beam 6 has a closed cross-section formed by the inner side beam 61 and the outer side beam 62, extending in the longitudinal direction. Figure 10 ).

[0043] In more detail, such as Figure 3 As shown, the inner side beam 61 has: an inner upper wall portion 61a extending along the width direction of the vehicle body; an inner lower wall portion 61b opposite to the inner upper wall portion 61a and extending along the width direction of the vehicle body; an inner side wall portion 61c connecting the inner ends of the inner upper wall portion 61a and the inner lower wall portion 61b; and upper and lower flanges 61d and 61e extending in the vertical direction from the outer ends of the inner upper wall portion 61a and the inner lower wall portion 61b, respectively. The cross-section of the inner side beam 61 orthogonal to the extension direction is a cap shape that bulges inward in the width direction of the vehicle body.

[0044] like Figure 4 As shown, the outer beam 62 has an upper outer wall portion 62a extending along the width direction of the vehicle body, an lower outer wall portion 62b opposite to the upper outer wall portion 62a and extending along the width direction of the vehicle body, an outer outer wall portion 62c connecting the outer ends of the upper outer wall portion 62a and the lower outer wall portion 62b, and upper and lower flanges 62d and 62e extending vertically from the inner ends of the upper outer wall portion 62a and the lower outer wall portion 62b, respectively. The cross-section of the outer beam 62 orthogonal to the extension direction is a cap shape that bulges outward in the width direction of the vehicle body.

[0045] The upper flanges 61e, 62e and the lower flanges 61f, 62f of the inner side beam 61 and the outer side beam 62 are joined in the width direction of the vehicle body by means of welding, thereby forming a side beam 6 with a closed cross section S7 having a roughly rectangular cross section.

[0046] Reference Figure 3 A reinforcing member 65 is disposed within the side beam 6. The reinforcing member 65 is, for example, an extruded part of aluminum. The reinforcing member 65 extends along the side beam 6 in the longitudinal direction of the vehicle body. The reinforcing member 65 extends from the rear end of the side beam 6 (… Figure 2 The reinforcement 65 extends to the vicinity of the front end of the hinge pillar 7. More specifically, the reinforcement 65 extends to the front side of the center of the hinge pillar 7 in the longitudinal direction. The front end of the reinforcement 6 is adjacent to the front surface portion 72b of the hinge pillar inner member 72. The reinforcement 65 is fixed at multiple points in the longitudinal direction of the inner beam 61 by fastening members 66 such as bolts.

[0047] The front end 65g of the reinforcing member 65 slopes rearward from the inside of the vehicle body width direction towards the outside of the vehicle body width in the top view. Figure 1 (As shown by the dashed line). The reinforcing member 65 has a plurality of closed sections S11, S12, S13 that are adjacent in the width direction of the vehicle body.

[0048] In more detail, such as Figure 10 As shown, the reinforcing member 65 has an upper wall 65a and a lower wall 65b that are opposite each other in the vertical direction and extend horizontally, an inner wall 65c and an outer wall 65d that are opposite each other in the width direction of the vehicle body and extend vertically, and a first longitudinal wall 65e and a second longitudinal wall 65f that extend vertically between the inner wall 65c and the outer wall 65d. A plurality of closed sections S11, S12, and S13 have an inner closed section S11 located inside the width direction of the vehicle body, an outer closed section S12 located outside the width direction of the vehicle body, and an intermediate closed section S13 located between the inner closed section S11 and the outer closed section S12.

[0049] like Figure 7 and Figure 10 As shown, the reinforcing member 65 is fastened to the hinge post 7 at its front end via a fastening member 66. The fastening member 66 fastens the toe plate 5, the hinge post 7, and the reinforcing member 65 together.

[0050] In more detail, such as Figure 10 As shown, a blind nut 67 protruding into the inwardly closed section S11 is fixed to the inner wall 65c of the reinforcing member 65. Fastening holes are provided in the flange portion 52 of the toe plate 5 and the inner component 72 of the hinge pillar, corresponding to the blind nut 67. The fastening member 66 is inserted into the fastening hole from the inside of the cockpit C (toe plate 5 flange portion 52 side) and screwed into the blind nut 67, thereby fixing the reinforcing member 65 inside the hinge pillar 7.

[0051] In other words, the fastening member 66 is inserted into the closed section (inner closed section) S11 at the inner end of the vehicle body in the width direction. The flange 52, hinge pillar inner member 72, and reinforcing member 65 are screwed together by the fastening member 66 (3-layer fastening). In this specification, the blind hole nut 67 is a type of fixing nut used to securely join materials such as aluminum plates and thin iron plates where tapping is ineffective or welding is impossible, by creating a bottom hole and riveting with a special tool. Figure 10 The structure of fixing the front end of the reinforcing member 65 to the hinge column inner member 72 is described. However, in the part of the reinforcing member 65 that is fixed to the inner beam 61 outside the front end, the reinforcing member 65 is also fixed to the inner beam 61 by a blind hole nut and a fastening connection member.

[0052] The lower body structure of the vehicle according to the above embodiments can achieve the following effects.

[0053] The lower body structure of vehicle 1 includes: a floor panel 4, side beams 6 extending along the front-rear direction at both ends of the floor panel 4 in the body width direction, a hinge column 7 connected to the side beams 6 and extending vertically at the front end of the side beams 6, and a reinforcing member 65 extending along the front-rear direction within the side beams 6 and fastened to the hinge column 7 via a fastening member 66.

[0054] According to this structure, the reinforcing member 65 is fastened to the hinge pillar 7, thus enabling the transfer of impact loads input to the hinge pillar 7, such as those caused by SORB testing, to the side beam 6 via the reinforcing member 65 and the fastening member 66. This allows the impact loads input to the hinge pillar 7 to be distributed among the reinforcing member 65, the fastening member 66, and the side beam 6, suppressing potential cabin deformation caused by the retraction of the hinge pillar 7.

[0055] The present invention also includes a toe plate 5, which is connected to the front end of the floor panel 4 and located in the cabin C at the lower end of the hinge column 7. The fastening connection component 66 fastens the toe plate 5, the hinge column 7, and the reinforcing member 65 together.

[0056] According to this structure, the toe plate 5, the hinge column 7, and the reinforcing member 65 are fastened together by the fastening connection member 66. Therefore, the toe plate 5 can also withstand the impact load input to the hinge column 7, and the toe plate 5 can also suppress the backward movement of the hinge column 7.

[0057] The reinforcing member 65 has a plurality of closed sections S11, S12, S13 adjacent in the width direction of the vehicle body.

[0058] According to this structure, the rigidity of the stiffener 65 can be improved compared to when the stiffener 65 has a closed section.

[0059] The fastening component 66 is inserted into the inner closed section S11 located at the inner end of the vehicle body width direction among the plurality of closed sections S11, S12, S13.

[0060] According to this structure, the inner closed section S11 on the inside of the vehicle body width direction is easily connected to the hinge column 7 and the toe plate 5 by inserting the fastening connection member 66 into the inner closed section S11.

[0061] The reinforcement 65 extends to the vicinity of the front end of the hinge post 7.

[0062] According to this structure, the impact load from the hinge column 7 input from the front of the vehicle body can be transmitted to the reinforcement 65 more effectively.

[0063] The toe plate 5 has a main body 51 extending in the width direction of the vehicle body and a flange 52 extending upward from both ends of the main body 51 in the width direction of the vehicle body. The toe plate 5 is connected to the hinge column 7 in the flange 52.

[0064] According to this structure, it is a specific structure for connecting the toe plate 5 to the hinge post 7.

[0065] The hinge pillar 7 has an inner hinge pillar 72 located inside the width direction of the vehicle body and an outer hinge pillar 71 located outside the width direction of the vehicle body. The fastening and connecting member 66 fastens and connects the flange portion 52, the inner hinge pillar 72, and the reinforcing member 65.

[0066] According to this structure, the impact load input from the hinge column 7 at the front of the vehicle body can be more effectively absorbed by the reinforcement 65.

[0067] In the top view, the front end 65g of the reinforcing member 65 slopes backward from the inside of the vehicle body width direction toward the outside of the vehicle body width direction.

[0068] According to this structure, for example, after the tire, which has moved backward due to the SORB test, comes into contact with the front end 65g of the reinforcement 65, it is guided outward in the width direction of the vehicle body, which can suppress the deformation of the cabin C that may occur due to the tire moving backward.

[0069] In this embodiment, the structure of the reinforcing member 65 as an aluminum extrusion is described, but the present invention is not limited thereto. For example, it can also be a stamped product or a rolled product of iron.

[0070] In this embodiment, the structure of the reinforcing member 65 being fixed to the hinge column inner member 72 and / or the inner beam 61 by the fastening connection member 66 and the blind hole nut 67 is described. However, the present invention is not limited to this. For example, the fastening connection member 66 can also be fastened to the welding nut or the like provided on the reinforcing member 65.

[0071] In this embodiment, the reinforcing member 65 is described as having a plurality of closed cross sections S11, S12, S13, but the present invention is not limited thereto, and the reinforcing member 65 may also have a single closed cross section.

[0072] In this embodiment, the front end portion 65g of the reinforcing member 65 is described as having a structure that is inclined outward in the width direction toward the rear of the vehicle body. However, the present invention is not limited to this, and the front end portion of the reinforcing member 65 may also be parallel to the width direction of the vehicle body.

[0073] In this embodiment, a structure is described in which the reinforcing member 65 extends to the vicinity of the front end of the hinge column inner member 72. However, the present invention is not limited to this. The reinforcing member 65 can be fastened to the hinge column inner member 72.

[0074] In this embodiment, the toe plate 5, the hinge column inner part 72, and the reinforcing member 65 are described as being fastened together in three layers. However, the present invention is not limited to this, but the toe plate 5 and the hinge column inner part 72, as well as the hinge column inner part 72 and the reinforcing member 65, can also be fastened together separately.

[0075] The present invention is not limited to the structure described in the embodiments, and various modifications can be made.

[0076] [Postscript] This disclosure includes the following forms.

[0077] [Form 1] A lower body structure for a vehicle, comprising: Floor panels; Side beams extend along the front-rear direction of the vehicle body at both ends of the floor panel in the vehicle width direction; A hinge column, which is connected to the side beam and extends vertically along the front end of the side beam; A reinforcing member extends within the side beam in the longitudinal direction of the vehicle body and is fastened to the hinge column via a fastening connection member.

[0078] [Form 2] The lower body structure of the vehicle according to aspect 1 is characterized in that: It also features a toe plate located within the cockpit at the lower end of the hinge column. The fastening component fastens the toe plate, the hinge post, and the reinforcement together.

[0079] [Form 3] The lower structure of the vehicle according to form 1 or 2 is characterized in that: The reinforcing member has a plurality of closed cross sections that are adjacent in the width direction of the vehicle body.

[0080] [Form 4] The lower structure of the vehicle according to form 3 is characterized in that: The fastening component is inserted into the inner closed section located at the inner end of the vehicle body width direction among the plurality of closed sections.

[0081] [Form 5] The lower structure of the vehicle according to any one of forms 1 to 4 is characterized in that: The reinforcement extends to the vicinity of the front end of the hinge post.

[0082] [Form 6] The lower structure of the vehicle according to any one of forms 1 to 5 is characterized in that: The toe plate has a main body extending in the width direction of the vehicle body and flange portions extending upward from both ends of the main body in the width direction of the vehicle body. The toe plate is connected to the hinge post in the flange portion.

[0083] [Form 7] The lower structure of the vehicle according to any one of forms 1 to 6 is characterized in that: The hinge pillar has an inner hinge pillar component located inside the vehicle body width direction and an outer hinge pillar component located outside the vehicle body width direction. The fastening component fastens together the flange, the hinge column inner part, and the reinforcing member.

[0084] [Form 8] The lower structure of the vehicle according to any one of forms 1 to 7 is characterized in that: In a top view, the front end of the reinforcing member slopes backward from the inside of the vehicle body width direction toward the outside of the vehicle body width direction.

[0085] [Numbering Explanation] 1. Automobile (vehicle) 4. Floor panels 5-Toe Plate 6 side beams 7 Hinged Column 51 Main Body 52 Flange portion 65 Reinforcing Components 65e front end 66 Fastening components 71 Hinge column outer component 72 Hinge column internals C cabin S11 Closed section (inner closed section) S12 Closed Section S13 Closed Section

Claims

1. A lower body structure for a vehicle, comprising: Floor panels; Side beams extend along the front-rear direction of the vehicle body at both ends of the floor panel in the vehicle width direction; A hinge column, which is connected to the side beam and extends vertically along the front end of the side beam; A reinforcing member extends within the side beam in the longitudinal direction of the vehicle body and is fastened to the hinge column via a fastening connection member.

2. The lower body structure of the vehicle according to claim 1, characterized in that: It also has a toe plate that is connected to the front end of the floor panel and located in the cabin at the lower end of the hinge column. The fastening component fastens the toe plate, the hinge post, and the reinforcement together.

3. The lower body structure of the vehicle according to claim 1 or 2, characterized in that: The reinforcing member has a plurality of closed cross sections that are adjacent in the width direction of the vehicle body.

4. The lower body structure of the vehicle according to claim 3, characterized in that: The fastening component is inserted into the inner closed section located at the inner end of the vehicle body width direction among the plurality of closed sections.

5. The lower body structure of the vehicle according to claim 1 or 2, characterized in that: The reinforcement extends to the vicinity of the front end of the hinge post.

6. The lower body structure of the vehicle according to claim 2, characterized in that: The toe plate has a main body extending in the width direction of the vehicle body and flange portions extending upward from both ends of the main body in the width direction of the vehicle body. The toe plate is connected to the hinge post in the flange portion.

7. The lower body structure of the vehicle according to claim 6, characterized in that: The hinge pillar has an inner hinge pillar component located inside the vehicle body width direction and an outer hinge pillar component located outside the vehicle body width direction. The fastening component fastens together the flange, the hinge column inner part, and the reinforcing member.

8. The lower body structure of the vehicle according to claim 1 or 2, characterized in that: In a top view, the front end of the reinforcing member slopes backward from the inside of the vehicle body width direction toward the outside of the vehicle body width direction.

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