Vehicle frame structure

A vehicle frame structure, comprising:

• a bumper reinforcement that is disposed at a vehicle front and rear direction end portion of a vehicle body and that extends along a vehicle width direction;
• and
• shock absorbing components that extend along a vehicle front and rear direction from vehicle width direction end portion sides of the bumper reinforcement toward a vehicle front and rear direction central portion side of the vehicle body, that are configured to have a closed cross-sectional structure, and that become compressively deformed by input of a load equal to or greater than a predetermined value from the bumper reinforcement,
• wherein
• the bumper reinforcement includes:
• an upper constituent member that extends along the vehicle width direction, that is disposed in such a way that positions of its vehicle width direction end portion sides correspond to upper portion sides of the shock absorbing components, and that is formed in a hollow shape,
• a lower constituent member that extends along the vehicle width direction, that is disposed in such a way that positions of its vehicle width direction end portion sides correspond to lower portion sides of the shock absorbing components, that is disposed at an interval apart from, and on a vehicle lower side of, the upper constituent member, and that is formed in a hollow shape, and
• a middle constituent portion that is positioned further toward the vehicle lower side than an upper wall portion configuring an upper surface of the upper constituent member, that is positioned further toward the vehicle lower side than a lower wall portion configuring a lower surface of the lower constituent member, and that is provided with load transmission inhibitors that inhibit load transmission from the middle constituent portion to the shock absorbing components in a case in which a load has been input to the bumper reinforcement from an opposite side from a shock absorbing components side,
• the shock absorbing components each include:
• a right and left pair of upper ridgelines that extend along the vehicle front and rear direction on an upper end portion side of the shock absorbing component, and
• a right and left pair of lower ridgelines that extend along the vehicle front and rear direction on a lower end portion side of the shock absorbing component,
• retention brackets that intercouple the upper constituent member and the lower constituent member and that are secured to the shock absorbing components are provided at vehicle width direction positions corresponding to the shock absorbing components,
• the retention brackets each include:
• an upper wall portion that is superposed on an upper surface side of the upper constituent member,
• a lower wall portion that is superposed on a lower surface side of the lower constituent member, and
• an interconnecting wall portion that interconnects an end portion of the upper wall portion on the shock absorbing components side and an end portion of the lower wall portion on the shock absorbing components side,
• upper ridgelines formed on both sides of upper surfaces of the upper wall portions of the retention brackets are disposed so as to be continuous with the right and left pairs of upper ridgelines of the shock absorbing components, and
• lower ridgelines formed on both sides of lower surfaces of the lower wall portions of the retention brackets are disposed so as to be continuous with the right and left pairs of lower ridgelines of the shock absorbing components.