Column construction

Abstract

The present application provides a pillar structure capable of suppressing the displacement amount of a roll-up device to the inside of a passenger compartment at the time of a side collision load input. A center pillar (10) of which a closed section (19) is constituted by a pillar inner member (18) and a pillar outer member (16) is provided with a roll-up device (30) below, the pillar outer member (16) is respectively provided with a first reinforcing member (48) disposed at a position overlapping the roll-up device (30) in a side view and a second reinforcing member (50) disposed above the roll-up device (30), the first reinforcing member (48) and the second reinforcing member (48) are disposed separately from each other in a vehicle up-and-down direction, and a first deformation portion (52) capable of deforming at the time of a side collision load input is provided between the first reinforcing member (48) and the second reinforcing member (50).

Description

Technical Field

[0001] This invention relates to the column structure of automobiles and other vehicles. Background Technology

[0002] For example, Patent Document 1 discloses a column structure in which a retractor is arranged below the central column and the front inclined portion of the retractor connection is inclined relative to the inner plate of the central column than the rear inclined portion.

[0003] In this patent document 1, by employing such a column structure, it is possible to suppress the intrusion and breakage of the center column when a side collision load is input.

[0004] Existing technical documents

[0005] Patent documents

[0006] Patent Document 1: Japanese Patent No. 5673851 Summary of the Invention

[0007] The problem that the invention aims to solve

[0008] However, in cases where it is desired to strengthen the position of the retractor, in the pillar structure disclosed in Patent Document 1, when a side collision load is input, the hinge reinforcement located on the outside of the retractor in the vehicle width direction presses the retractor toward the interior of the vehicle, which may increase the amount of displacement of the retractor toward the interior of the vehicle.

[0009] The present invention was made in view of the aforementioned problems, and its object is to provide a column structure capable of suppressing the amount of displacement of the retractor toward the vehicle interior when a side collision load is input.

[0010] Methods for solving problems

[0011] To achieve the aforementioned objective, the present invention is characterized in that a retractor is disposed below a column whose closed cross-section is formed by an inner column member and an outer column member, and a first reinforcing member and a second reinforcing member are respectively disposed on the outer column member, wherein the first reinforcing member is disposed at a position overlapping the retractor when viewed from the side, and the second reinforcing member is disposed above the retractor, the first reinforcing member and the second reinforcing member are disposed separately from each other in the vertical direction of the vehicle, and a first deformable portion capable of deforming under a side collision load is provided between the first reinforcing member and the second reinforcing member.

[0012] Invention Effects

[0013] In this invention, a column structure is obtained that can suppress the amount of displacement of the retractor toward the interior of the vehicle when a side collision load is input. Attached Figure Description

[0014] Figure 1This is a partial perspective side view of the central column of the column structure according to the embodiment of the present invention, viewed from inside the vehicle.

[0015] Figure 2 It shows that Figure 1 A partially enlarged side view of the central column with its internal components removed.

[0016] Figure 3 This is a partial sectional perspective view of the central column, which is equipped with a retractor.

[0017] Figure 4 This is a longitudinal sectional view along the axial direction of the center column of the section equipped with the retractor.

[0018] Figure 5 This is a side view showing multiple reinforcing ribs provided on the external member of the column at the second deformation section.

[0019] Figure 6 (a) is a front view of the first reinforcing member, (b) is a left side view of the first reinforcing member, and (c) is a right side view of the first reinforcing member.

[0020] Figure 7 (a) and (b) are schematic diagrams showing the deformation state of the center column in this embodiment when subjected to an input-side collision load, and (c) is a schematic diagram showing the deformation state of the center column in the comparative example when subjected to an input-side collision load.

[0021] Figure 8 This is a partial perspective side view of the center column of a column structure applying another embodiment of the present invention, viewed from inside the vehicle.

[0022] Explanation of reference numerals in the attached figures

[0023] 10, 10a middle column

[0024] 14 Lower longitudinal beams

[0025] 16. External Column Components

[0026] 18. Internal components of columns

[0027] 19 Closed Section

[0028] 30 reel take-up unit

[0029] 34 (External members of columns) sidewalls

[0030] 36 (Front wall of external column members)

[0031] 38 (Rear wall of external column members)

[0032] 44. Front side ridge (ridge section)

[0033] 46. ​​Rear side ridge (ridge section)

[0034] 48 First Reinforcing Component

[0035] 50 Second Reinforcing Component

[0036] 52 First Deformation

[0037] 54 Second Deformation

[0038] 56 First reinforcing rib

[0039] 58 Second reinforcing rib

[0040] 70 joint point

[0041] 72 Third reinforcing rib

[0042] 80 Upper mounting section (retractor mounting section)

[0043] 92 Third Reinforcing Component

[0044] 94. Cut-off portion

[0045] A baseline Detailed Implementation

[0046] Next, embodiments of the present invention will be described in detail with reference to the accompanying drawings. It should be noted that in the figures, "front and back" refers to the front-to-back direction of the vehicle, "left and right" refers to the width direction of the vehicle (left-right direction), and "up and down" refers to the vertical direction of the vehicle (vertical up and down direction).

[0047] like Figure 1 As shown, the left-side center pillar 10 of the pillar structure using this embodiment is positioned at the center of the vehicle in the longitudinal direction, and is configured to stand upright in the vertical direction of the vehicle. The upper end of the center pillar 10 is connected to the upper side beam 12 of the vehicle. In addition, the lower end of the center pillar 10 is connected to the lower longitudinal beam 14 extending in the longitudinal direction of the vehicle.

[0048] like Figure 3 As shown, the center pillar 10 is configured to include an outer pillar member 16 disposed on the outer side in the vehicle width direction and an inner pillar member 18 disposed on the inner side in the vehicle width direction. The axial vertical cross-sections of the outer pillar member 16 and the inner pillar member 18 are each cap-shaped, and they are integrally joined by flanges (front flange 26, rear flange 28, front flange 40, and rear flange 42) described later to form a closed cross-section 19 (see reference). Figure 3 ).

[0049] like Figure 1 , Figure 3As shown, the pillar inner member 18 has: a side wall 20 extending in the vertical direction of the vehicle and facing the interior of the vehicle; a front wall 22 curving inward from the front end of the side wall 20 in the vehicle width direction; a rear wall 24 curving inward from the rear end of the side wall 20 in the vehicle width direction; a front flange 26 extending forward from the inner end of the front wall 22 in the vehicle width direction and engaging with the pillar outer member 16; and a rear flange 28 extending rearward from the inner end of the rear wall 24 in the vehicle width direction and engaging with the pillar outer member 16. A generally rectangular opening 32 for inserting a retractor 30 is provided on the lower part of the side wall 20 of the pillar inner member 18.

[0050] like Figure 2 , Figure 3 As shown, the external pillar member 16 has: a sidewall 34 extending in the vertical direction of the vehicle; a front wall 36 curving inward from the front end of the sidewall 34 in the vehicle width direction; a rear wall 38 curving inward from the rear end of the sidewall 34 in the vehicle width direction; a front flange 40 extending forward from the inner end of the front wall 36 in the vehicle width direction and engaging with the internal pillar member 18 (front flange 26); and a rear flange 42 extending rearward from the inner end of the rear wall 38 in the vehicle width direction and engaging with the internal pillar member 18 (rear flange 28).

[0051] In the pillar outer member 16, a front side ridge portion 44 is provided at the boundary between the front wall 36 and the side wall 34. This front side ridge portion 44 is configured to curve significantly downwards from the upper side of the center pillar 10 towards the front of the vehicle. Additionally, in the pillar outer member 16, a rear side ridge portion 46 is provided between the rear wall 38 and the side wall 34. This rear side ridge portion 46 is configured to curve slightly downwards from the upper side of the center pillar 10 towards the rear of the vehicle. The front side ridge portion 44 and the rear side ridge portion 46 function as "ridge portions" as defined in the claims.

[0052] like Figure 2 As shown, the external pillar member 16 is respectively provided with a first reinforcing member 48 positioned overlapping with the retractor 30 when viewed from the side and a second reinforcing member 50 positioned above the retractor 30. The first reinforcing member 48 and the second reinforcing member 50 are separately arranged from each other in the vertical direction of the vehicle.

[0053] A first deformable portion 52, capable of deforming under a side impact load, is provided between the lower first reinforcing member 48 and the upper second reinforcing member 50. This first deformable portion 52 is composed of a region without any reinforcing members, and deforms more easily under a side impact load compared to a region with reinforcing members. The first deformable portion 52 is formed by a region extending along the vehicle width direction between the first reinforcing member 48 and the second reinforcing member 50 when viewed from the side.

[0054] In addition, such as Figure 2 As shown, the outer pillar member 16 has a second deformable portion 54 between the first reinforcing member 48 and the lower longitudinal beam 14, which are separated from each other in the vertical direction of the vehicle. This second deformable portion 54 is deformable under side impact load. The second deformable portion 54 is formed by a portion without any reinforcing member, and compared with a portion with reinforcing member, it deforms more easily under side impact load. The second deformable portion 54 is formed by a region extending in the vehicle width direction between the lower end of the first reinforcing member 48 and the upper end of the lower longitudinal beam 14 when viewed from the side.

[0055] like Figure 5 As shown, the second deformable portion 54 is configured to include a plurality of first reinforcing ribs 56 respectively disposed on the front wall 36 and rear wall 38 of the outer pillar member 16, and a plurality of second reinforcing ribs 58 disposed on the side wall 34 of the outer pillar member 16. The first reinforcing ribs 56 include a front first reinforcing rib 60a disposed on the front wall 36 of the outer pillar member 16 and a rear first reinforcing rib 60b disposed on the rear wall 38 of the outer pillar member 16. Furthermore, the second reinforcing ribs 58 include a front second reinforcing rib 62a disposed on the vehicle-front side of the side wall 34 of the outer pillar member 16 and a rear second reinforcing rib 62b disposed on the vehicle-rear side of the side wall 34 of the outer pillar member 16.

[0056] It should be noted that, in the following description, when both the front first reinforcing rib 60a and the rear first reinforcing rib 60b are included, it is abbreviated as "first reinforcing rib 56". Similarly, when both the front second reinforcing rib 62a and the rear second reinforcing rib 62b are included, it is abbreviated as "second reinforcing rib 58".

[0057] In this embodiment, the first reinforcing rib 56 and the second reinforcing rib 58 provided on the outer member 16 are respectively formed by recesses that are recessed toward the inner member 18, but are not limited to this. For example, they may also be formed by protrusions that protrude toward the outside.

[0058] like Figure 5 As shown, the first reinforcing rib 56 (front first reinforcing rib 60a, rear first reinforcing rib 60b) and the second reinforcing rib 58 (front second reinforcing rib 62a, rear second reinforcing rib 62b) are arranged such that they respectively sandwich the ridge portion (front ridge portion 44 and rear ridge portion 46) that connect the side wall 34 to the front wall 36 and the rear wall 38.

[0059] The front first reinforcing rib 56 is composed of three reinforcing ribs 57a-57c disposed on the upper side and three reinforcing ribs 57d-57f disposed on the lower side. The rear first reinforcing rib 60b is composed of two reinforcing ribs 59a and 59b disposed on the upper side and two reinforcing ribs 59c and 59d disposed on the lower side. The length of the first reinforcing rib 56 along its longitudinal direction is set such that the reinforcing ribs 57d-57f disposed on the lower side are longer than the reinforcing ribs 57a-57c disposed on the upper side. The second reinforcing rib 58 is arranged opposite to the reinforcing ribs 57c-57d, 59c, and 59d disposed on the lower side, separated by ridge portions (front ridge portion 44 and rear ridge portion 46).

[0060] like Figure 3 As shown, the cross-section of the first reinforcing member 48 along the vehicle's longitudinal direction is approximately U-shaped. Furthermore, the first reinforcing member 48 is configured to have an outer wall 64 formed along the side wall 34 of the pillar outer member 16, and a front leg wall 66 and a rear leg wall 68 formed along the front wall 36 and rear wall 38 of the pillar outer member 16, respectively, with an opening in the vehicle width direction. The front leg wall 66 and the rear leg wall 68 together function as "leg walls" as defined in the claims.

[0061] Furthermore, the leg walls (front leg wall 66 and rear leg wall 68) of the first reinforcing member 48 each have a joint point 70 that engages with the front wall 36 and rear wall 38 of the external pillar member 16, respectively, and a third reinforcing rib 72 extending in the vehicle width direction between the joint points 70 (see Figure 6 (a)~ Figure 6 (c)). The first reinforcing member 48 is integrally joined to the external column member 16 at the joint point 70, for example by spot welding. The third reinforcing rib 72 is formed by a recess that is recessed inward compared to the joint point 70 when viewed from the side.

[0062] The second reinforcing member 50 extends vertically, and its cross-section along the vehicle's longitudinal direction is approximately U-shaped (see [reference]). Figure 1 Additionally, such as Figure 2 As shown, the second reinforcing member 50 is configured to have an outer wall portion 74 that is an elongated strip formed along the side wall 34 of the pillar outer member 16, and a front wall portion 76 and a rear wall portion 78 formed along the front wall 36 and rear wall 38 of the pillar outer member 16, respectively, with an opening in the vehicle width direction. It should be noted that, as... Figure 1 As shown, the upper end of the second reinforcing member 50 terminates at the middle of the center pillar 10, but is not limited thereto. For example, it may extend to the vicinity of the front of the upper side beam 12 on the upper part of the vehicle body or be directly connected to the lower side of the upper side beam 12.

[0063] The internal component 18 of the column has a retractor mounting mechanism for mounting the retractor 30. This retractor mounting mechanism is as follows: Figure 4 As shown, it consists of an upper mounting portion (retractor mounting portion) 80 and a lower mounting portion 82. The upper mounting portion 80 is positioned above the first reinforcing member 48 and is fastened to the pillar inner member 18 by bolts 86 via an upper bracket 84 connected to the retractor 30. The lower mounting portion 82 is located on the lower side of the first reinforcing member 48 and is fastened to the pillar inner member 18 by bolts 90 via a lower bracket 88 connected to the retractor 30.

[0064] The retractor 30 is a device capable of winding and pulling out a seat belt (not shown) used to restrain an occupant to the seat. Normally, the retractor 30 operates in a manner that allows the occupant to pull out the seat belt and winds it up with a specified winding force. During sudden braking, collisions, or other events where the vehicle body and seat belt experience acceleration exceeding a specified value, the retractor 30 functions to secure the seat belt and prevent it from being pulled out further.

[0065] The central column 10 of the column structure using this embodiment is basically constructed in the manner described above, and its effects will be explained below.

[0066] In the center pillar 10 of this embodiment, the outer pillar members 16 are respectively provided with a first reinforcing member 48 positioned overlapping the retractor 30 when viewed from the side and a second reinforcing member 50 positioned above the retractor 30. The first reinforcing member 48 and the second reinforcing member 50 are separately arranged in the vertical direction of the vehicle. In addition, a first deformable portion 52 capable of deforming under a side collision load is provided between the first reinforcing member 48 and the second reinforcing member 50.

[0067] Therefore, in this embodiment, the side impact load input to the center pillar 10 can be supported by the second reinforcing member 50, and the maximum inflection point entering the vehicle interior can be set at the first deformable portion 52, which is above the retractor 30. Thus, the amount of displacement of the retractor 30 towards the vehicle interior can be suppressed (see [reference]). Figure 7 (b)

[0068] In contrast, in the comparative example that does not have the first deformation section 52 of this embodiment, the position where the retractor 30 is located is bent and deformed due to the lateral impact load input to the center column 10 (see [link]). Figure 7 (c) It should be noted that, in Figure 7 (a)~ Figure 7 In (c), the solid line A represents the baseline set by the applicant for the interior side of the vehicle. Figure 7 In the comparative example shown in (c), the interior side of the retractor 30 reaches the baseline A, while... Figure 7As shown in (b) in this embodiment, corresponding to the amount of bending of the first deformable portion 52, a horizontal gap is generated between the corner of the retractor 30 and the reference line A, which can suppress the amount of displacement of the retractor 30 toward the interior of the vehicle.

[0069] In addition, in this embodiment, the lower end of the center pillar 10 is connected to the lower longitudinal beam 14 extending in the vehicle's longitudinal direction. The pillar outer member 16 is further provided with a second deformable portion 54 between the first reinforcing member 48, which is separated in the vehicle's vertical direction, and the lower longitudinal beam 14, which is deformable when a side collision load is input.

[0070] Therefore, in this embodiment, the first deformable portion 52, located above the retractor 30, and the second deformable portion 54, located below the retractor 30, can bend and deform towards the vehicle interior when a side impact load is input. Thus, in this embodiment, due to the increased absorption of the side impact load caused by the first deformable portion 52 and the second deformable portion 54 positioned above and below the retractor 30, deformation towards the vehicle interior can be suppressed. Consequently, in this embodiment, by providing multiple inflection points formed when a side impact load is input, the amount of displacement of the retractor 30 towards the vehicle interior can be further suppressed. Figure 7 In the embodiment shown in (a), the displacement of the retractor 30 toward the interior of the vehicle is suppressed by the inflection point formed by the first deformable portion 52 and the inflection point formed by the second deformable portion 54, thereby enabling a gap to be provided between the reference line A and the retractor 30.

[0071] Furthermore, in this embodiment, the second deformable portion 54 is configured to include a plurality of first reinforcing ribs 56 respectively disposed on the front wall 36 and the rear wall 38 of the column outer member 16, and a plurality of second reinforcing ribs 58 disposed on the side wall 34 of the column outer member 16. The first reinforcing ribs 56 and the second reinforcing ribs 58 are arranged such that they respectively sandwich the ridge portions (front ridge portion 44 and rear ridge portion 46) connecting the side wall 34 to the front wall 36 and the rear wall 38.

[0072] Therefore, in this embodiment, when a side impact load is input, the lower side of the retractor 30 can be further bent and deformed. By bending and deforming in conjunction with the first deformable portion 52 located above the retractor 30, the amount of side impact load absorbed can be increased, thereby suppressing the amount of displacement towards the vehicle interior. In addition, by arranging the first reinforcing rib 56 and the second reinforcing rib 58 in a manner that sandwiches the ridge portion (front ridge portion 44 and rear ridge portion 46), a certain rigidity against side impact loads can be ensured, and when an excessively large side impact load is input, deformation can be promoted by utilizing the first reinforcing rib 56 and the second reinforcing rib 58.

[0073] Furthermore, in this embodiment, the length of the first reinforcing rib 56 along its longitudinal direction is set such that the reinforcing ribs 57d to 57f disposed on the lower side are longer than those disposed on the upper side. The second reinforcing rib 58 is disposed opposite to the lower side reinforcing ribs 57c to 57d, 59c, and 59d of the first reinforcing rib 56, separated by ridge portions (front ridge portion 44 and rear ridge portion 46).

[0074] Therefore, in this embodiment, by setting the length of the lower side first reinforcing rib 56 (reinforcing ribs 57d to 57f) to be longer than the upper side first reinforcing rib 56 (reinforcing ribs 57a to 57c), and by arranging the second reinforcing rib 58 opposite to the lower side first reinforcing rib 56, the lower part of the retractor 30 can be further bent. Furthermore, in this embodiment, by bending in conjunction with the first deformable portion 52 located above the retractor 30, the absorption of side impact loads is increased, thus suppressing the amount of deformation into the vehicle interior.

[0075] Furthermore, in this embodiment, compared to the case where there is only one inflection point that bends upon input of a side collision load (see...),... Figure 7 Compared to (b), by setting multiple inflection points (see...) Figure 7 (a) This allows for the suppression of the amount of displacement (protrusion) of the retractor 30 toward the vehicle compartment side. Furthermore, in this embodiment, by setting the length of the lower side first reinforcing rib 56 to be longer than the upper side first reinforcing rib 56, the stress during deformation of the center column 10 can be dispersed to the upper and lower sides, suppressing cracking of the center column during deformation.

[0076] Furthermore, in this embodiment, the first reinforcing member 48 is configured to have an outer wall 64 formed along the side wall 34 of the outer pillar member 16, and a front leg wall 66 and a rear leg wall 68 formed along the front wall 36 and the rear wall 38 of the outer pillar member 16, respectively, with an opening in the vehicle width direction. The front leg wall 66 and the rear leg wall 68 have a plurality of engagement points 70 that engage with the front wall 36 and the rear wall 38 of the outer pillar member 16, respectively, and a third reinforcing rib 72 extending in the vehicle width direction between adjacent engagement points 70, 70.

[0077] In this embodiment, by providing joint points 70 for engaging with the front wall 36 and rear wall 38 of the outer member 16 on the front and rear leg walls 66 of the first reinforcing member 48, and by providing a third reinforcing rib 72, it is possible to prevent the first reinforcing member 48 from peeling off from the outer member 16 when a side impact load is input. Furthermore, the rigidity of the area where the retractor 30 is disposed can be improved by the third reinforcing rib 72. As a result, in this embodiment, when a side impact load is input, the first deformable portion 52 and the second deformable portion 54 disposed above and below the first reinforcing member 48 can be reliably deformed.

[0078] Furthermore, in this embodiment, the inner pillar member 18 has an upper mounting portion 80 (retractor mounting portion) for mounting the retractor 30. This upper mounting portion 80 (retractor mounting portion) is positioned above the vehicle compared to the first reinforcing member 48.

[0079] In this embodiment, by providing an upper mounting portion 80 above the first reinforcing member 48, when a side impact load is input and the retractor 30 is pressed against the first reinforcing member 48, the displacement of the retractor 30 towards the vehicle interior can be suppressed by the pillar inner member 18. Furthermore, in this embodiment, the side impact load input to the retractor 30 can be transferred to the pillar inner member 18, and due to the increased rigidity of the center pillar 10, the energy absorption of the side impact load can be increased.

[0080] Next, the central column 10a of a column structure applying another embodiment of the present invention will be described below. It should be noted that the same reference numerals are used for the same constituent elements as in the foregoing embodiment, and their detailed descriptions are omitted.

[0081] In another embodiment, the outer member 16 of the center pillar 10a is configured to include a third reinforcing member 92, which extends across the first deformable portion 52 in the vertical direction and connects the upper end of the first reinforcing member 48 to the lower end of the second reinforcing member 50. The third reinforcing member 92 extends in the vertical direction, and its cross-section along the vehicle's longitudinal direction is approximately U-shaped.

[0082] Furthermore, the third reinforcing member 92 has a notch 94 at a position overlapping with the first deformable portion 52 when viewed from the side. This notch 94 consists of a front notch 96a disposed on the front side of the vehicle and a rear notch 96b disposed on the rear side of the vehicle. The front notch 96a is arranged to slope forward from top to bottom. The rear notch 96b is arranged to extend generally in the vertical direction. Additionally, the front notch 96a and the rear notch 96b are arranged opposite each other in the longitudinal direction of the vehicle.

[0083] The front cutout portion 96a and the rear cutout portion 96b are configured to include a portion of the front edge portion 44 and the rear edge portion 46 of the outer pillar member 16, respectively, and a portion of the first deformable portion 52 can be visually identified from the inside in the vehicle width direction via the cutout portion 94.

[0084] In another embodiment of the center column 10a, the third reinforcing member 92, which is arranged to span the first deformable portion 52, has a notch 94 (front notch 96a and rear notch 96b) at the position overlapping with the first deformable portion 52, thereby improving the rigidity of the center column 10a.

[0085] In another embodiment, the center pillar 10a can be deformed from the cut-out portion 94 and the first deformation portion 52 above the retractor 30 (see the dotted line in the figure) when an excessive side collision load is input, thereby suppressing the amount of displacement of the retractor 30 towards the interior of the vehicle.

Claims

1. A column structure, characterized in that, A column with a closed cross-section formed by internal and external column members is equipped with a retractor at the bottom. The external column members are respectively provided with a first reinforcing member and a second reinforcing member, wherein the first reinforcing member is positioned to overlap with the retractor when viewed from the side, and the second reinforcing member is positioned above the retractor. The first reinforcing member and the second reinforcing member are separately configured in the vertical direction of the vehicle. A first deformable portion capable of deforming under a side impact load is provided between the first reinforcing member and the second reinforcing member. The lower end of the column is connected to a lower longitudinal beam extending in the longitudinal direction of the vehicle. A second deformable portion, capable of deforming under side collision load input, is provided between the first reinforcing member, which is separated along the vertical direction of the vehicle, and the lower longitudinal beam of the external pillar member. The second deformable portion is located below the retractor.

2. The column structure according to claim 1, characterized in that, The second deformable portion includes a plurality of first reinforcing ribs respectively disposed on the front wall and rear wall of the column outer member, and a plurality of second reinforcing ribs disposed on the side wall of the column outer member. The first reinforcing rib and the second reinforcing rib are arranged such that they sandwich the ridge portion that connects the side wall to the front wall and the rear wall.

3. The column structure according to claim 2, characterized in that, The length of the first reinforcing rib along its longitudinal direction is set such that, compared to the first reinforcing rib disposed on the upper side, the first reinforcing rib disposed on the lower side is longer. The second reinforcing rib is arranged opposite the first reinforcing rib located on the lower side, separated by the ridge portion.

4. The column structure according to claim 2, characterized in that, The first reinforcing member has an outer wall formed along the side wall of the outer pillar member and leg walls formed along the front and rear walls of the outer pillar member, respectively, with an opening in the vehicle width direction. The leg wall has joints that respectively engage with the front and rear walls of the external column member, and a third reinforcing rib extending in the vehicle width direction between the joints.

5. The column structure according to claim 1, characterized in that, The internal component of the column has a retractor mounting section for mounting the retractor. The retractor mounting portion is positioned above the vehicle compared to the first reinforcing member.

6. The column structure according to claim 1, characterized in that, The external column member includes a third reinforcing member that spans the first deformable portion and connects the first reinforcing member to the second reinforcing member. The third reinforcing member has a notch at the position where it overlaps with the first deformable part when viewed from the side.

Images