Detachable underbody protection plates and methods of providing detachable underbody protection plates

1 . A vehicle comprising:

a protection plate that is releasably mounted to an underside of the vehicle, the protection plate having a slot having a first opening portion and a second opening portion, wherein the protection plate comprises a vertically turning connecting lip at a front edge of the protection plate, the connecting lip mounted to a front face of a bumper reinforcement beam; and

a bolt extends through the second opening portion and connects to a cross member that extends between longitudinally extending side members of a frame of the vehicle, the second opening portion is sized and configured to allow the bolt to slide out of the second opening portion and toward the first opening portion upon application of a longitudinal force of a preselected amount to release the protection plate from the bolt and at least partially from the underside of the vehicle.

2 . The vehicle of claim 1 , wherein the protection plate includes a front portion and a rear portion that are connected together by a connecting portion, the connecting portion having a reduced width compared to the front and rear portions.

3 . The vehicle of claim 1 , wherein the protection plate includes a front portion, a rear portion and an upturned portion between the front portion and the rear portion, the upturned portion extends upward toward the cross member.

4 . The vehicle of claim 3 , wherein the slot is located at the upturned portion such that the second opening portion of the slot is offset vertically from the first opening portion.

5 . The vehicle of claim 1 , wherein the slot is a keyhole slot and the first and second opening portions are enlarged and narrow opening portions, respectively, the narrow opening portion has a doorway portion that provides an exit opening between the narrow opening portion and the enlarged opening portion of the keyhole slot, wherein the doorway portion includes an overlap portion that extends partially in front of the bolt.

6 . The vehicle of claim 1 , wherein the cross member is a number one cross member, number two cross member or number three cross member.

7 . The vehicle of claim 1 , wherein a front portion of the protection plate is mounted to a bottom facing surface of a bumper reinforcement beam.

8 . The vehicle of claim 1 , wherein the slot is a keyhole slot and the first and second opening portions are enlarged and narrow opening portions, respectively, the protection plate comprises multiple keyhole slots having enlarged opening portions and narrow opening portions.

9 . The vehicle of claim 1 , wherein the protection plate comprises one or more bends that provide lines extending in a vehicle lateral direction.

10 . The vehicle of claim 1 , wherein the protection plate comprises one or more recessed regions of reduced material thickness having an elongated dimension that extends in a vehicle lateral direction.

11 . A protection plate that releasably mounts to an underside of a vehicle, the protection plate comprising:

a slot having a first opening portion and a second opening portion;

wherein the second portion is sized to receive a bolt through the second opening portion and connect to a cross member that extends between longitudinally extending side members of a frame of the vehicle, the second opening portion is sized and configured to allow the bolt to slide out of the second opening portion and toward the first opening portion upon application of a longitudinal force of a preselected amount to release the protection plate from the bolt and at least partially from the underside of the vehicle;

wherein the protection plate comprises a vertically turning connecting lip at a front edge of the protection plate, the connecting lip configured to mount to a front face of a bumper reinforcement beam.

12 . The protection plate of claim 11 , wherein the protection plate includes a front portion and a rear portion that are connected together by a connecting portion, the connecting portion having a reduced width compared to the front and rear portions.

13 . The protection plate of claim 11 , wherein the protection plate includes a front portion, a rear portion and an upturned portion between the front portion and the rear portion, the upturned portion configured to extend upward toward the cross member with the protection plate mounted to the underside of the vehicle.

14 . The protection plate of claim 13 , wherein the slot is located at the upturned portion such that the second opening portion of the keyhole slot is offset vertically from the first opening portion with the protection plate mounted to the underside of the vehicle.

15 . The protection plate of claim 11 , wherein the slot is a keyhole slot and the first and second opening portions are enlarged and narrow opening portions, respectively, the narrow opening portion has a doorway portion that provides an exit opening between the narrow opening portion and the enlarged opening portion of the keyhole slot, wherein the doorway portion includes an overlap portion that extends partially in front of the bolt with the protection plate mounted to the underside of the vehicle.

16 . The protection plate of claim 11 , wherein a front portion of the protection plate is configured to mount to a bottom facing surface of a bumper reinforcement beam.

17 . The protection plate of claim 11 , wherein the slot is a keyhole slot and the first and second opening portions are enlarged and narrow opening portions, respectively, the protection plate comprises multiple keyhole slots having enlarged opening portions and narrow opening portions.

18 . The protection plate of claim 11 , wherein the protection plate comprises one or more bends that provide lines extending in a vehicle lateral direction and/or one or more recessed regions of reduced material thickness having an elongated dimension that extends in the vehicle lateral direction.