Abstract: A vehicle frame structure is adapted to absorb energy from frontal impacts. The frame structure extends under a front portion of the body frame. The frame structure includes a rear sub-frame located below and in front of a pair of side frame under-members, and a catching surface connected to the pair of side frame under-members for engaging the rear sub-frame and attached structures. A steering gear is attached to the rear sub-frame. The catching surface interacts with the steering gear to promote additional crushing energy absorption during sliding movement of the rear sub-frame relative to the catching surface during the frontal impact. The catching surface can be formed on ramps attached to the pair of side frame under-members. A tether can prolong crushing contact of the rear sub-frame with respect to the catching surface.

Abstract: A frame structure is adapted to absorb energy from frontal impacts and extends under a front portion of the body frame. The frame structure includes a rear sub-frame located below and in front of a pair of side frame under-members, and at least one ramp connected to the pair of side frame under-members for directing rearward sliding movement of the rear sub-frame and attached structures downwardly beneath a battery assembly. A catching surface engages a steering gear to improve energy absorption during frontal impacts. A reinforcement bracket attached to the pair of side frame under-members defines a pocket for temporarily catching the rear sub-frame providing an energy absorption path before releasing the rear sub-frame to slide past. A tether is connected between the pair of side frame under-members and the rear sub-frame for holding the rear sub-frame against the ramp to increase energy absorption.

Abstract: A frame structure is adapted to absorb energy from frontal impacts and extends under a front portion of the body frame. The frame structure includes a rear sub-frame located below and in front of a pair of side frame under-members, and a reinforcement bracket attached to the pair of side frame under-members to facilitate formation and control a deformation shape in an energy absorption pocket in the side frame under-member during a frontal impact for temporarily restraining the rear sub-frame before releasing the rear sub-frame to slide past the reinforcement bracket. The energy absorption pocket is formed in the side frame under-member forward of and outboard of the reinforcement bracket during a frontal impact prior to the rear sub-frame be released from B-point bolt connections to the side frame under-members.

Abstract: A frame structure is adapted to absorb energy from frontal impacts and extends under a front portion of the body frame. The frame structure includes a rear sub-frame located below and in front of a pair of side frame under-members, and a tether is connected between the pair of side frame under-members and the rear sub-frame for prolonging proximity of the rear sub-frame with the side frame under-members. A noise-vibration, ride and handling bracket can be modified to define the tether. The tether attaches to the pair of side frame under-members at two outboard locations and to the rear sub-frame at the two inboard locations positioned forward of the outboard locations. The tether attaches to the pair of side frame under-members providing a limited degree of rotary displacement away from the side frame under-members.

Abstract: A vehicle frame includes an inverter protection brace extending between front and rear sub-frames located below and in front of side under frame members. A gusset of the brace strongly connects to the front sub-frame to load a beam section without overloading attaching bolts. The brace has a bolted connection attaches to the rear sub-frame. The brace deforms forward of the bolted connection creating a safety cage around an inverter during frontal impacts. A reinforcement bracket attaches to the side frame under members to define a pocket for temporarily catching the rear sub-frame. Ramps connect to the reinforcement bracket allowing sliding of the rear sub-frame rearward, and direct movement downwardly beneath a battery assembly. A catching surface defined on the ramp engages at least one rear sub-frame attached structure. A tether connects between the pair of side frame under-members and the rear sub-frame for improving the interaction of the rear sub-frame against the ramps.

Abstract: A frame structure is adapted to absorb energy from frontal impacts and extends under a front portion of the body frame. The frame structure includes a rear sub-frame located below and in front of a pair of side frame under-members, and a tether is connected between the pair of side frame under-members and the rear sub-frame for prolonging proximity of the rear sub-frame with the side frame under-members. A noise-vibration, ride and handling bracket can be modified to define the tether. The tether attaches to the pair of side frame under-members at two outboard locations and to the rear sub-frame at the two inboard locations positioned forward of the outboard locations. The tether attaches to the pair of side frame under-members providing a limited degree of rotary displacement away from the side frame under-members.

Abstract: A frame structure is adapted to absorb energy from frontal impacts and extends under a front portion of the body frame. The frame structure includes a rear sub-frame located below and in front of a pair of side frame under-members, and a reinforcement bracket attached to the pair of side frame under-members to facilitate formation and control a deformation shape an energy absorption pocket in the side frame under-member during a frontal impact for temporarily restraining the rear sub-frame providing an energy absorption path before releasing the rear sub-frame to slide past the reinforcement bracket. The energy absorption pocket is formed in the side frame under-member forward of and outboard of the reinforcement bracket during a frontal impact prior to the rear sub-frame be released from a B-point bolt connection to the side frame under-member.

Abstract: A vehicle frame structure is adapted to absorb energy from frontal impacts. The frame structure extends under a front portion of the body frame. The frame structure includes a rear sub-frame located below and in front of a pair of side frame under-members, and a catching surface connected to the pair of side frame under-members for engaging the rear sub-frame and attached structures to improve energy absorption response during a frontal impact. A steering gear is attached to the rear sub-frame. The catching surface interacts with the steering gear to promote additional crushing energy absorption during sliding movement of the rear sub-frame relative to the catching surface during the frontal impact. The catching surface can be formed on ramps attached to the pair of side frame under-members. A tether can prolong crushing contact of the rear sub-frame with respect to the catching surface.

Abstract: A vehicle frame includes an inverter protection brace extending between front and rear sub-frames located below and in front of side frame members. A gusset of the brace strongly connects to the front sub-frame to load a beam section without overloading the bolts, and a bolted connection attaches to the rear sub-frame. The brace deforms forward of the bolted connection creating a safety cage around an inverter during frontal impacts. A reinforcement bracket attaches to the side frame members to define a pocket for temporarily catching the rear sub-frame. Ramps connect to the reinforcement bracket allowing sliding of the rear sub-frame rearward, and direct movement downwardly beneath a battery assembly. A catching surface defined on a ramp engages at least one rear sub-frame attached structure. A tether connects between the pair of side frame under-members and the rear sub-frame for improving the interaction of the rear sub-frame against the ramps.