Deployable panel for an airbag

1. An assembly, comprising:

a vehicle interior component;

an airbag mounted to the vehicle interior component;

a deployable panel supported by the vehicle interior component adjacent the airbag, the deployable panel being movable relative to the vehicle interior component between a retracted position and an extended position; and

a spring between the vehicle interior component and the deployable panel and biasing the deployable panel toward the extended position;

an actuator releasably coupled to the deployable panel;

the spring biasing the deployable panel toward the actuator.

2. The assembly of claim 1 , wherein the actuator is a pyrotechnic release.

3. The assembly of claim 1 , wherein the vehicle interior component defines a cavity, the deployable panel being in the cavity in the retracted position and extendable from the cavity to the extended position.

4. The assembly of claim 1 , further comprising a slidable rail between the deployable panel and the vehicle interior component.

5. The assembly of claim 1 , wherein the deployable panel is translatable between the retracted position and the extended position.

6. The assembly of claim 1 , further comprising a windshield, the deployable panel being positioned to be between the airbag and the windshield in the extended position.

7. The assembly of claim 1 , wherein the deployable panel has a reaction surface positioned to abut the airbag in an inflated position when the deployable panel is in the extended position.

8. The assembly of claim 1 , wherein the vehicle interior component is an instrument panel.

9. The assembly of claim 1 , further comprising a controller programed to actuate the actuator in response to a vehicle impact.

10. The assembly as set forth in claim 1 , wherein the deployable panel is rigid relative to the airbag.

11. The assembly as set forth in claim 1 , wherein the deployable panel is elongated in a cross-vehicle direction.

12. An assembly, comprising:

a vehicle interior component;

an airbag mounted to the vehicle interior component;

a deployable panel supported by the vehicle interior component adjacent the airbag, the deployable panel being movable relative to the vehicle interior component between a retracted position and an extended position;

a spring between the vehicle interior component and the deployable panel and biasing the deployable panel toward the extended position; and

a windshield, the deployable panel being positioned to be between the airbag and the windshield in the extended position.

13. The assembly of claim 12 , wherein the deployable panel is translatable between the retracted position and the extended position.

14. The assembly as set forth in claim 12 , wherein the deployable panel is rigid relative to the airbag.

15. The assembly as set forth in claim 12 , wherein the deployable panel is elongated in a cross-vehicle direction.

16. An assembly, comprising:

a vehicle interior component, the vehicle interior component is an instrument panel;

an airbag mounted to the vehicle interior component;

a deployable panel supported by the vehicle interior component adjacent the airbag, the deployable panel being movable relative to the vehicle interior component between a retracted position and an extended position; and

a spring between the vehicle interior component and the deployable panel and biasing the deployable panel toward the extended position.

17. The assembly of claim 16 , wherein the deployable panel is translatable between the retracted position and the extended position.

18. The assembly as set forth in claim 16 , wherein the deployable panel is rigid relative to the airbag.

19. The assembly as set forth in claim 16 , wherein the deployable panel is elongated in a cross-vehicle direction.

20. The assembly of claim 16 , wherein the deployable panel has a reaction surface positioned to abut the airbag in an inflated position when the deployable panel is in the extended position.