Vehicle frame structure

Abstract

The objective is to obtain a vehicle frame structure that maintains good collision resistance during side collisions while ensuring sufficient battery capacity. [Solution] The vehicle frame structure includes a pair of frame members 12 provided at both ends in the vehicle width direction and extending in the vehicle front-rear direction, a cross member 16 provided between the pair of frame members 12 and extending in the vehicle width direction, and a battery case 14 positioned on the lower side of the cross member 16. The frame member 12 is composed of an upper inner wall portion 40B facing the cross member 16 in the vehicle width direction and a lower inner wall portion 40C facing the battery case 14 in the vehicle width direction, with the upper inner wall portion 40B being provided further inward in the vehicle width direction than the lower inner wall portion 40C.

Description

Technical Field

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[0001] The present invention relates to a vehicle skeleton structure.

Background Art

[0002] Patent Document 1 discloses a structure in which a battery case is provided under the floor of a vehicle. Further, in the structure described in Patent Document 1, rockers are provided at both ends in the vehicle width direction, the lower part of the rocker faces the battery case, and the upper part of the rocker is located above the floor panel. Here, in the rocker described in Patent Document 1, the lower part is arranged inside the vehicle width direction more than the upper part.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] If the lower part of the rocker is arranged inside the vehicle width direction more than the upper part as in Patent Document 1 above, the length of the battery case in the vehicle width direction becomes short, so the mounting amount of the battery cannot be increased. On the other hand, when the lower part of the rocker is formed to have the same width as the upper part, it becomes difficult to maintain good anti-collision performance during a side collision of the vehicle.

[0005] An object of the present invention is to obtain a vehicle skeleton structure capable of securing the mounting amount of a battery while maintaining good anti-collision performance during a side collision of the vehicle. <The

Means for Solving the Problems

[0006] The vehicle frame structure according to claim 1 comprises a pair of frame members provided at both ends in the vehicle width direction and extending in the vehicle longitudinal direction, a cross member provided between the pair of frame members and extending in the vehicle width direction, and a battery case disposed on the lower side of the cross member, wherein the frame member is configured to include an upper inner wall portion facing the cross member in the vehicle width direction and a lower inner wall portion facing the battery case in the vehicle width direction, and the upper inner wall portion is provided further inward in the vehicle width direction than the lower inner wall portion.

[0007] The vehicle frame structure according to claim 1 includes a pair of left and right frame members provided at both ends in the vehicle width direction, and each frame member extends in the vehicle longitudinal direction. A cross member extending in the vehicle width direction is provided between the pair of frame members, and a battery case is positioned below this cross member. Here, the frame member is composed of an upper inner wall portion facing the cross member in the vehicle width direction and a lower inner wall portion facing the battery case in the vehicle width direction. Furthermore, the upper inner wall portion is provided further inward in the vehicle width direction than the lower inner wall portion. As a result, the lower inner wall portion is located relatively further outward in the vehicle width direction than the upper inner wall portion, and the battery case can be extended in the vehicle width direction by that amount.

[0008] Furthermore, since the upper inner wall is located inward in the vehicle width direction compared to the lower inner wall, and the upper inner wall faces the cross member in the vehicle width direction, during a side collision of the vehicle (hereinafter referred to as "side collision"), the collision load is transmitted from the upper inner wall to the cross member, effectively transferring the collision load to the side not involved in the collision.

[0009] The vehicle frame structure according to claim 2 is as described in claim 1, wherein the upper inner wall portion is arranged with a gap between it and the cross member, the lower inner wall portion is arranged with a gap between it and the battery case, and the gap between the upper inner wall portion and the cross member is smaller than the gap between the lower inner wall portion and the battery case.

[0010] In the vehicle frame structure according to claim 2, a gap is provided between the upper inner wall and the cross member. Therefore, even when the cross member is fastened to the battery case and assembled to the frame member, the frame member and the cross member do not interfere with each other during assembly. Furthermore, because a gap is provided between the lower inner wall and the battery case, the impact load on the battery case during a side collision of the vehicle can be suppressed.

[0011] Furthermore, the gap between the upper inner wall and the cross member is smaller than the gap between the lower inner wall and the battery case. This allows the upper inner wall to contact the cross member before the lower inner wall hits the battery case during a side collision, enabling the collision load to be transmitted through the cross member.

[0012] The vehicle frame structure according to claim 3 is provided in claim 1, wherein an inclined portion is provided between the upper inner wall portion and the lower inner wall portion, which slopes from the outside in the vehicle width direction to the inside in the vehicle width direction as it moves upward toward the vehicle.

[0013] In the vehicle frame structure according to claim 3, since an inclined portion is provided between the upper inner wall portion and the lower inner wall portion, when assembling the cross member to the frame member from the lower side of the vehicle, the inclined portion can function as a guide member, and the cross member can be positioned between the left and right pair of frame members.

[0014] The vehicle frame structure according to claim 4 is such that, in claim 3, the upper end of the inclined portion is positioned to overlap with the lower end of the cross member when viewed from the vehicle width direction.

[0015] In the vehicle frame structure according to claim 4, the collision load is transmitted from the upper end of the inclined portion, which has increased thickness in the vehicle width direction, to the cross member, thereby suppressing local deformation of the frame members.

[0016] The vehicle frame structure according to claim 5 is such that, in claim 3, the lower end of the inclined portion is located above the terminal member of the battery housed in the battery case.

[0017] In the vehicle skeleton structure according to claim 5, even when the skeleton member enters the battery case during a side impact, it is possible to prevent the terminal member of the battery from interfering with the inclined portion.

Advantages of the Invention

[0018] As described above, according to the vehicle skeleton structure of the present invention, it is possible to secure the battery mounting amount while maintaining good anti-collision performance during a side collision of the vehicle.

Brief Description of the Drawings

[0019] [Figure 1] FIG. 1 is a schematic plan view showing the skeleton of a vehicle 10 to which the vehicle skeleton structure according to the first embodiment is applied. In the figure, the arrow FR, the arrow UP, and the arrow RH indicate the vehicle front direction, the vehicle upward direction, and the vehicle right direction in the vehicle 10, respectively. In the following description, when the front-rear, up-down, and left-right directions are used without special mention, the front and rear in the vehicle front-rear direction, the up and down in the vehicle up-down direction, and the left and right in the vehicle left-right direction (width direction) are respectively indicated. [Figure 2] FIG. 2 is an enlarged cross-sectional view showing an enlarged state of the section cut along line 2-2 of FIG. 1. [Figure 3] FIG. 3 is an enlarged cross-sectional view of a main part showing an enlarged rocker of FIG. 2.

Modes for Carrying Out the Invention

[0020] The vehicle skeleton structure according to the embodiment will be described with reference to the drawings.

[0021] As shown in FIG. 1, the vehicle 10 of the present embodiment includes a pair of left and right rockers 12 as skeleton members. The rockers 12 are provided at both ends in the vehicle width direction of the vehicle 10 and extend in the vehicle front-rear direction, respectively.

[0022]

[0023] ​A cross member 16 is provided between the left and right rockers 12. In this embodiment, as an example, two cross members 16 are arranged in the front and rear direction and each extends in the vehicle width direction. A seat (not shown) that constitutes the driver's seat and the front passenger seat, etc. is attached to the cross member 16.

[0024] A battery case 14 is arranged on the vehicle lower side of the cross member 16. The battery case 14 is a case that protects the battery BT (see FIG. 2) housed inside. Details of the battery case 14 will be described later.

[0025] FIG. 2 is an enlarged cross-sectional view showing an enlarged state of the cut along the line 2-2 of FIG. 1. As shown in this FIG. 2, the battery case 14 is arranged under the floor of the vehicle 10 and is configured to include a case lower 20 and a case upper 22.

[0026] The case lower 20 is formed in a substantially hat-shaped cross section that is open to the vehicle upper side when viewed from the vehicle front-rear direction, and lower side flanges 20A are formed at both ends in the vehicle width direction of the case lower 20. Further, the case upper 22 is formed in a substantially hat-shaped cross section that is open to the vehicle lower side when viewed from the vehicle front-rear direction, and upper side flanges 22A are formed at both ends in the vehicle width direction of the case upper 22. And the lower side flange 20A and the upper side flange 22A are fastened by bolts 24 in a state where they are overlapped. The bolt 24 is screwed into a nut 26 provided on a first energy absorption member 36 that constitutes the rocker 12.

[0027] The battery BT is housed in the battery case 14. The battery BT is configured to be able to supply power to a drive source of the vehicle 10 such as a motor (not shown). Further, a terminal member 60 is provided at an end of the battery BT. The terminal member 60 is a bus bar formed of metal and electrically connects the battery cells that constitute the battery BT.

[0028] A cross member 16 is provided above the case upper 22 of the battery case 14. The cross member 16 has a roughly hat-shaped cross section, with its cross section, viewed from the vehicle width direction, opening towards the lower side of the vehicle, and flanges 16A are formed at the front and rear ends of the cross member 16.

[0029] The flange 16A of the cross member 16 is superimposed on the case upper 22 of the battery case 14 and fastened to the battery case 14 by stud bolts 28 and nuts 30. The fastening locations between the cross member 16 and the battery case 14 are not particularly limited, but for example, they are fastened at four equally spaced locations along the vehicle width direction.

[0030] Next, we will describe the details of the rocker 12, which is the main component of the present invention.

[0031] The rocker 12 is mainly composed of a first energy absorbing member 36 and a second energy absorbing member 38. The rocker 12 is also composed of an outer shell consisting of a rocker inner panel and a rocker outer panel (not shown), and the first energy absorbing member 36 and the second energy absorbing member 38 are arranged within a closed cross-section formed by the rocker inner panel and the rocker outer panel.

[0032] The first energy absorbing member 36 is positioned on the inside of the rocker 12 in the vehicle width direction and has a hollow main body portion 40. The main body portion 40 and the cross member 16 are fastened together via a bracket 44. Although not shown in the figures, the other rocker is similarly fastened to the cross member 16 via a bracket, so that one rocker 12 and the other rocker are connected by the cross member.

[0033] In this embodiment, the bracket 44 is formed in a substantially crank shape when viewed from the front-rear direction of the vehicle, and the inner side of the bracket 44 in the vehicle width direction is fastened to the upper surface of the cross member 16 by fastening means (not shown) while overlapping with it. The outer side of the bracket 44 in the vehicle width direction is fastened to the upper surface of the main body portion 40 by bolts 46 while overlapping with it.

[0034] Figure 3 is an enlarged cross-sectional view of the main part of the rocker shown in Figure 2. As shown in Figure 3, the main body 40 is composed of an upper wall portion 40A, an upper inner wall portion 40B, a lower inner wall portion 40C, an inclined portion 40D, a lower wall portion 40E, and an outer wall portion 40F.

[0035] The upper wall portion 40A constitutes the upper surface of the main body portion 40 and is inclined downward from the outside in the vehicle width direction toward the inside in the vehicle width direction.

[0036] The upper inner wall portion 40B extends in the vertical and longitudinal directions of the vehicle, and its upper end is connected to the inner end of the upper wall portion 40A in the vehicle width direction. A lower inner wall portion 40C is provided below the upper inner wall portion 40B. The lower inner wall portion 40C extends in the vertical and longitudinal directions of the vehicle, and an inclined portion 40D is provided between the upper inner wall portion 40B and the lower inner wall portion 40C.

[0037] The inclined section 40D slopes from the outside in the vehicle width direction to the inside in the vehicle width direction as it extends upwards from the vehicle. The lower end of the inclined section 40D is connected to the lower inner wall section 40C, and the upper end of the inclined section 40D is connected to the upper inner wall section 40B.

[0038] Here, the upper inner wall portion 40B is located further inward in the vehicle width direction than the lower inner wall portion 40C. For this reason, the inner side wall of the main body portion 40 in the vehicle width direction is formed with a notched lower section. Also, the upper inner wall portion 40B faces the cross member 16 in the vehicle width direction, and the lower inner wall portion 40C faces the battery case 14 in the vehicle width direction (see Figure 2).

[0039] The lower wall portion 40E constitutes the lower surface of the main body portion 40 and extends in the vehicle width direction and the vehicle longitudinal direction. The inner end of the lower wall portion 40E in the vehicle width direction is connected to the lower end of the lower inner wall portion 40C, and the outer end of the lower wall portion 40E in the vehicle width direction is connected to the lower end of the outer wall portion 40F.

[0040] The outer wall section 40F extends in the vertical and longitudinal directions of the vehicle, and the upper end of the outer wall section 40F is connected to the outer end of the upper wall section 40A in the vehicle width direction.

[0041] The main body 40 is provided with an upper partition wall 50, a lower partition wall 52, an outer vertical connecting wall 54, and an inner vertical connecting wall 56. The partition section of the present invention is formed by including the upper partition wall 50 and the lower partition wall 52.

[0042] The upper partition wall 50 is located on the upper part of the main body 40 and extends in the vehicle width direction, connecting the outer wall located on the outside in the vehicle width direction of the main body 40 with the inner wall located on the inside in the vehicle width direction. The upper partition wall 50 divides the internal space of the main body 40 vertically. The lower partition wall 52 is located below the upper partition wall 50 and extends in the vehicle width direction. The lower partition wall 52 also divides the internal space of the main body 40 vertically.

[0043] Here, the upper partition wall 50 is formed with a greater thickness in the vehicle-vertical direction on the inside of the vehicle-width direction than on the outside of the vehicle-width direction. Specifically, in the upper partition wall 50, an upper variation section 50A is formed on the outside of the vehicle-width direction from the center of the vehicle-width direction, where the thickness changes. In this embodiment, as an example, the thickness on the right side of the upper partition wall 50 is set to be one-third or less of the thickness on the left side, with the upper variation section 50A as the boundary.

[0044] Similar to the upper partition wall 50, the lower partition wall 52 is formed with a greater thickness in the vehicle-vertical direction on the inside of the vehicle-width direction than on the outside of the vehicle-width direction. Specifically, in the lower partition wall 52, a lower variation section 52A is formed on the outside of the vehicle-width direction from the center of the vehicle-width direction, where the thickness changes. In this embodiment, as an example, the thickness on the right side of the lower partition wall 52 is set to be less than one-third of the thickness on the left side, with the lower variation section 52A as the boundary. Also, in this embodiment, the upper variation section 50A and the lower variation section 52A are formed in a position where they overlap when viewed from the vehicle-vertical direction.

[0045] The upper section 50A and the lower section 52A are connected in the vertical direction of the vehicle by an outer vertical connecting wall 54. The outer vertical connecting wall 54 extends almost vertically, and its thickness is greater than the thin section of the upper section wall 50, but thinner than the thick section.

[0046] An inner longitudinal connecting wall 56 is provided on the side of the vehicle width direction that is inward from the outer longitudinal connecting wall 54. The inner longitudinal connecting wall 56 extends in the vehicle vertical direction, approximately parallel to the outer longitudinal connecting wall 54, and has a thickness similar to that of the outer longitudinal connecting wall 54. The inner longitudinal connecting wall 56 divides the space enclosed by the upper compartment wall 50, the lower compartment wall 52, the outer longitudinal connecting wall 54, and the main body 40 into two equal parts, left and right.

[0047] A second energy absorbing member 38 with a closed cross-sectional structure is provided on the outer side in the vehicle width direction from the main body 40. The second energy absorbing member 38 comprises a hollow main body 38A and an upper and lower partition wall 38B that divides the internal space of the main body 38A vertically and has a central portion in the vehicle width direction that curves upward or downward. In this embodiment, as an example, the upper and lower partition wall 38B is provided in the central portion in the vertical direction of the second energy absorbing member 38, and its central portion in the vehicle width direction is curved upward.

[0048] Here, the upper wall of the second energy absorbing member 38 is positioned to overlap with the upper partition wall 50 of the first energy absorbing member 36 when viewed from the vehicle width direction, and the lower wall of the second energy absorbing member 38 is positioned to overlap with the lower partition wall 52 of the first energy absorbing member 36 when viewed from the vehicle width direction.

[0049] As shown in Figure 2, the upper inner wall portion 40B is positioned with a gap between it and the cross member 16. The lower inner wall portion 40C is also positioned with a gap between it and the battery case 14.

[0050] Here, the gap between the upper inner wall portion 40B and the cross member 16 is set to be smaller than the gap between the lower inner wall portion 40C and the battery case.

[0051] Furthermore, the upper end of the inclined portion 40D in the main body 40 is positioned to overlap with the lower end of the cross member 16 when viewed from the vehicle width direction. In addition, the lower end of the inclined portion 40D is located above the terminal member 60 housed in the battery case 14.

[0052] Furthermore, the upper ridge of the cross member 16 and the upper partition wall 50 of the first energy absorbing member 36 are at the same height. In other words, they are positioned so that the ridge of the cross member 16 and the upper partition wall 50 overlap when viewed from the vehicle width direction. The ridge of the cross member 16 referred to here is the portion between the upper surface and the front of the cross member 16, and the portion between the upper surface and the rear of the cross member 16.

[0053] Furthermore, the flange 16A at the lower end of the cross member 16 and the lower partition wall 52 of the first energy absorbing member 36 are positioned at the same height. In other words, they are positioned so that the lower end of the cross member 16 and the lower partition wall 52 overlap when viewed from the vehicle width direction.

[0054] Furthermore, the outer vertical connecting wall 54 is provided on the outside in the vehicle width direction with respect to the center line CL of the fastening portion between the battery case 14 and the first energy absorbing member 36. In other words, the fastening holes for fastening the battery case 14 and the rocker 12 are provided on the inside in the vehicle width direction relative to the outer vertical connecting wall 54.

[0055] (action) Next, the operation of the vehicle frame structure according to this embodiment will be explained.

[0056] As shown in Figure 1, the vehicle 10 to which the vehicle frame structure according to this embodiment is applied is equipped with a pair of left and right rockers 12 provided at both ends in the vehicle width direction, and each rocker 12 extends in the vehicle longitudinal direction. A cross member 16 extending in the vehicle width direction is provided between the pair of rockers 12, and a battery case 14 is positioned below this cross member 16.

[0057] Here, as shown in Figure 2, the first energy absorbing member 36 constituting the rocker 12 includes an upper inner wall portion 40B facing the cross member 16 in the vehicle width direction, and a lower inner wall portion 40C facing the battery case 14 in the vehicle width direction. Furthermore, the upper inner wall portion 40B is provided further inward in the vehicle width direction than the lower inner wall portion 40C. As a result, the lower inner wall portion 40C is located relatively further outward in the vehicle width direction than the upper inner wall portion 40B, allowing the battery case to be expanded in the vehicle width direction by that amount. In other words, compared to a structure where the lower inner wall portion 40C is flush with the upper inner wall portion 40B, more batteries BT can be mounted.

[0058] Furthermore, in this embodiment, the upper inner wall portion 40B is located inward in the vehicle width direction compared to the lower inner wall portion 40C, and the upper inner wall portion 40B faces the cross member 16 in the vehicle width direction. As a result, when the vehicle 10 is involved in a side collision, the collision load is transmitted from the upper inner wall portion 40B to the cross member 16, effectively transmitting the collision load to the side not involved in the collision.

[0059] Furthermore, in this embodiment, since a gap is provided between the upper inner wall portion 40B and the cross member 16, even if the configuration is such that the cross member 16 is fastened to the battery case 14 and then assembled to the rocker 12, the rocker 12 and the cross member 16 do not interfere with each other during assembly.

[0060] Furthermore, since a gap is provided between the lower inner wall portion 40C and the battery case 14, it is possible to suppress the input of collision load to the battery case 14 during a side collision of the vehicle 10.

[0061] In particular, in this embodiment, the gap between the upper inner wall portion 40B and the cross member 16 is smaller than the gap between the lower inner wall portion 40C and the battery case 14. This allows the upper inner wall portion 40B to contact the cross member 16 before the lower inner wall portion 40C hits the battery case 14 during a side collision of the vehicle 10, and the collision load can be transmitted through the cross member 16.

[0062] Furthermore, in this embodiment, since an inclined portion 40D is provided between the upper inner wall portion 40B and the lower inner wall portion 40C, the inclined portion 40D can function as a guide member when assembling the cross member 16 to the rocker 12 from the lower side of the vehicle, and the cross member 16 can be positioned between the left and right pair of first energy absorbing members 36 (rocker 12).

[0063] Furthermore, in this embodiment, since the collision load is transmitted from the upper end of the inclined portion 40D, which has increased thickness in the vehicle width direction, to the cross member 16, local deformation of the rocker 12 can be suppressed.

[0064] Furthermore, in this embodiment, since the lower end of the inclined portion 40D is positioned above the terminal member 60 of the vehicle, even if the first energy absorbing member 36 enters the battery case 14 during a side collision, interference between the terminal member 60 of the battery BT and the inclined portion 40D can be suppressed. In other words, a wide distance can be secured between the terminal member 60 and the rocker 12, and crushing of the terminal member 60 during a side collision of the vehicle 10 can be suppressed.

[0065] The vehicle frame structure according to the present invention has been described above, but it goes without saying that it can be implemented in various forms without departing from the spirit of the present invention. For example, in this embodiment, the rocker 12 is configured by including a first energy absorbing member 36 and a second energy absorbing member 38, but it is not limited thereto, and the rocker 12 may be configured by including only the first energy absorbing member 36.

[0066] Furthermore, in this embodiment, a gap is provided between the upper inner wall portion 40B of the main body portion 40 and the cross member 16, but the invention is not limited to this, and for example, the cross member 16 may be abutted against the upper inner wall portion 40B. In this case, the battery case 14 may be fastened to the first energy absorbing member 36, and then the cross member 16 may be positioned and directly fastened to the first energy absorbing member 36.

[0067] Furthermore, in this embodiment, the terminal member 60 of the battery BT is positioned below the inclined portion 40D of the vehicle, but the invention is not limited to this, and at least a portion of the terminal member 60 may be positioned so as to overlap with the inclined portion 40D when viewed from the outside in the vehicle width direction.

[0068] Furthermore, in this embodiment, an inclined portion 40D is provided between the upper inner wall portion 40B and the lower inner wall portion 40C, but the embodiment is not limited to this, and a step portion at a substantially right angle may be formed. However, it is preferable to provide an inclined portion 40D from the viewpoint of suppressing stress concentration.

[0069] The following additional information is disclosed regarding the above embodiment.

[0070] (Note 1) A pair of skeletal members provided at both ends in the vehicle width direction and extending in the vehicle longitudinal direction, A cross member provided between a pair of the aforementioned structural members and extending in the vehicle width direction, The battery case is located on the lower side of the vehicle, It has, The frame member is composed of an upper inner wall portion facing the cross member in the vehicle width direction and a lower inner wall portion facing the battery case in the vehicle width direction. A vehicle frame structure in which the upper inner wall portion is provided further inward in the vehicle width direction than the lower inner wall portion. (Note 2) The upper inner wall portion is positioned with a gap between it and the cross member. The lower inner wall portion is positioned with a gap between it and the battery case. The vehicle frame structure as described in Appendix 1, wherein the gap between the upper inner wall portion and the cross member is smaller than the gap between the lower inner wall portion and the battery case. (Note 3) The vehicle frame structure according to Appendix 1 or 2, wherein an inclined portion is provided between the upper inner wall portion and the lower inner wall portion, which slopes from the outer side in the vehicle width direction to the inner side in the vehicle width direction as it extends upward towards the vehicle. (Note 4) The vehicle frame structure as described in Appendix 3, wherein the upper end of the inclined portion is provided in a position that overlaps with the lower end of the cross member when viewed from the vehicle width direction. (Note 5) The vehicle frame structure according to Appendix 3 or 4, wherein the lower end of the inclined portion is located above the terminal member of the battery housed in the battery case. [Explanation of Symbols]

[0071] 12. Rocker (framework member) 14 Battery Case 16 Crossmember 40B Upper inner wall 40C Lower inner wall 40D slope section 60 Terminal components BT Battery

Claims

1. A pair of skeletal members provided at both ends in the vehicle width direction and extending in the vehicle longitudinal direction, A cross member provided between a pair of the aforementioned structural members and extending in the vehicle width direction, The battery case is located on the lower side of the vehicle, It has, The frame member is composed of an upper inner wall portion facing the cross member in the vehicle width direction and a lower inner wall portion facing the battery case in the vehicle width direction. A vehicle frame structure in which the upper inner wall portion is provided further inward in the vehicle width direction than the lower inner wall portion.

2. The upper inner wall portion is positioned with a gap between it and the cross member. The lower inner wall portion is positioned with a gap between it and the battery case. The vehicle frame structure according to claim 1, wherein the gap between the upper inner wall portion and the cross member is smaller than the gap between the lower inner wall portion and the battery case.

3. The vehicle frame structure according to claim 1, wherein an inclined portion is provided between the upper inner wall portion and the lower inner wall portion, which slopes from the outside in the vehicle width direction to the inside in the vehicle width direction as it extends upward towards the vehicle.

4. The vehicle frame structure according to claim 3, wherein the upper end of the inclined portion is provided at a position that overlaps with the lower end of the cross member when viewed from the vehicle width direction.

5. The vehicle frame structure according to claim 3, wherein the lower end of the inclined portion is located above the terminal member of the battery housed in the battery case.

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