Vehicle lower portion structure
AssigneeToyota Jidosha Kabushiki Kaisha
InventorsMakoto Kato, Kotaro Shirotori, Shota Watanabe
Life of this patent
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Abstract
In a vehicle lower portion structure, a plurality of cross members are suspended along a vehicle width direction between a pair of side rails. Further, an oil pan guard is suspended along a longitudinal direction between a No. 2 cross member and a No. 3 cross member to protect an oil pan of a transmission from below. When a vehicle collides on its front, engagement between the oil pan guard and the cross member is released, to thereby prevent a decrease in the amount of collision energy to be absorbed by the pair of side rails.
Claims14
A vehicle lower portion structure, comprising:
- a pair of right and left side members that are extended along a vehicle longitudinal direction on both sides of a vehicle width direction of a vehicle, and constitute a part of a vehicle body;
- a first cross member that is suspended between the pair of side members along the vehicle width direction;
- a second cross member that is suspended between the pair of side members along the vehicle width direction, and arranged rearward in the vehicle longitudinal direction of the first cross member so as to be spaced from the first cross member in the vehicle longitudinal direction;
- an on-board component that is mounted on the vehicle body in a lower portion of the vehicle;
- and
- a guard member that is disposed downward, in a vehicle vertical direction, of the on-board component, wherein
- the guard member includes a brace member that is suspended between the first cross member and the second cross member along the vehicle longitudinal direction and fastened to at least one of the first cross member and the second cross member by a bolt, the brace member having an insertion hole through which the bolt is inserted,
- the insertion hole is formed in a shape of an elongated hole including a passable portion that is extended from a fastening position where the bolt inserted through the insertion hole is tightened to fasten the brace member, toward a center region, in the vehicle longitudinal direction, of the brace member, and
- the insertion hole includes, in a region from the fastening position to the passable portion, a tied-up section in which a size of the insertion hole in the vehicle width direction is not increased.
A vehicle lower portion structure, comprising:
- a pair of right and left side members that are extended along a vehicle longitudinal direction on both sides of a vehicle width direction of a vehicle, and constitute a part of a vehicle body;
- a first cross member that is suspended between the pair of side members along a vehicle width direction;
- a second cross member that is suspended between the pair of side members along the vehicle width direction, and arranged rearward in the vehicle longitudinal direction of the first cross member so as to be spaced from the first cross member in the vehicle longitudinal direction;
- and
- a brace member that is suspended along the vehicle longitudinal direction between the first cross member and the second cross member, and fastened to at least one of the first cross member or the second cross member by a bolt, the brace member having an insertion hole through which the bolt is inserted;
- wherein
- the insertion hole is formed in a shape of an elongated hole including a passable portion that is extended toward a center region of the brace member from a fastening position where the bolt inserted through the insertion hole is tightened to fasten the brace member, and a tied-up section in which a size, in the vehicle width direction, of the insertion hole is not increased in a region from the fastening position to the passable portion.
Dependencies are inferred from the claim text.