Sled testing system

• US 5,623,094 A
• Filed: 01/17/1996
• Issued: 04/22/1997
• Est. Priority Date: 01/17/1996
• Status: Expired due to Fees

• Current Assignee: MGA Research Corporation
• Original Assignee: MGA Research Corporation
• Inventors: Song, Seung-Jae, Miller, Patrick M.
• Primary Examiner(s): Chilcot, Richard
• Assistant Examiner(s): BIEGEL, RONALD L
• Application Number:
  US08/586,145
• Time in Patent Office: 461 Days
• Field of Search: 73/12.04, 73/12.07, 73/865.3, 73/866.4
• US Class Current: 73/12.07
• CPC Class Codes: G01M 17/0078 Shock-testing of vehicles
• CPC Class Codes: G01M 7/08 Shock-testing

Abstract

A sled testing system comprising a first carriage and a second carriage, the first carriage and second carriage being movably mounted together, and an acceleration absorption assembly located relative to the first carriage and the second carriage such that when the second carriage is accelerated at a second carriage rate, the first carriage will be accelerated at a first carriage rate.

Claims

1. A sled testing system having a driving member, the sled testing system comprising:

a first carriage,

a second carriage, the first carriage and second carriage being movably mounted together, and

an acceleration absorption assembly located relative to the first carriage and the second carriage such that when the second carriage is accelerated by the driving member at a second carriage rate, the first carriage will be simultaneously accelerated at a first carriage rate via the acceleration absorption assembly.

2. The sled testing system of claim 1 wherein the first carriage is a movable main sled carriage add the second carriage is movably mounted to the main sled carriage.

3. The sled testing system of claim 2 further including rails upon which the movable main sled carriage is slidably mounted.

4. The sled testing system of claim 3 wherein the main sled carriage includes a slide and brake assembly which slidably engages the rails and which may be activated so as to brake the main sled carriage after it is accelerated at the main sled carriage rate.

5. The sled testing system of claim 2 wherein the main sled carriage includes a recoil lever assembly which may engage the second carriage after the second carriage has been accelerated at the second carriage rate and in the event the second carriage recoils relative to the main carriage.

6. The sled testing system of claim 2 further including a tertiary carriage mounted to the main sled carriage such that when the secondary carriage is accelerated at a second carriage rate to impact the tertiary carriage, the tertiary carriage will be accelerated at a tertiary carriage rate and the main sled carriage will be accelerated at a main sled carriage rate.

7. The sled testing system of claim 6 wherein the tertiary carriage is movably mounted to the main sled carriage.

8. The sled testing system of claim 7 further including a shock absorption assembly connected between the tertiary carriage and the main sled carriage.

9. The sled testing system of claim 2 further including an impacter carriage movably mounted to the main sled carriage such that when the impacter carriage is accelerated to impact and accelerate the secondary carriage at a secondary carriage rate the main sled carriage will be accelerated at a main sled carriage rate.

10. The sled testing system of claim 1 wherein the second carriage slidably engages the first carriage.

11. The sled testing system of claim 1 wherein the acceleration absorption assembly is connected to the first carriage and second carriage such that when the second carriage is accelerated at a second carriage rate, the first sled carriage will be accelerated at a first carriage rate via the acceleration absorption assembly.

12. The sled testing system of claim 1 wherein the acceleration absorption assembly includes a backing cylinder from which extends an absorption piston, one of the backing cylinder and absorption piston being mounted to the first carriage and the other one of the backing cylinder and absorption piston being mounted to the second carriage.

13. The sled testing system of claim 1 wherein the driving member is a pneumatically driven piston.

14. A sled testing system having a driving member for testing first and second vehicle components during a crash situation, the sled testing system comprising:

a first carriage supporting the first vehicle component,

a second carriage supporting the second vehicle component, and

an acceleration absorption assembly located relative to the first carriage and the second carriage such that when the second carriage is accelerated by the driving member at a second carriage rate, the first carriage will be accelerated via the acceleration absorption assembly at a first carriage rate.

15. The sled testing system of claim 14 wherein the exterior component is a pre-crushed exterior vehicle component.

16. The sled testing system of claim 14 further including an impacter carriage movably mounted to the main sled carriage such that when the impacter carriage is accelerated to impact and accelerate the secondary carriage at a secondary carriage rate, the main sled carriage will be accelerated at a main sled carriage rate.

17. The sled testing system of claim 14 wherein the first vehicle component is a vehicle interior component and the second vehicle component is a vehicle exterior component.

18. A sled testing system having a driving member for testing first and second vehicle components during a crash situation, the sled testing system comprising:

a movable main sled carriage supporting the first vehicle component,

a tertiary carriage movably mounted to the main sled carriage,

a secondary carriage movably mounted to the main sled carriage,

an acceleration absorption assembly located relative to the main sled carriage and the secondary carriage such that when the secondary carriage is accelerated at a secondary carriage rate the main sled carriage will be accelerated via the vehicle absorption assembly at a main sled carriage rate, and

one of the secondary carriage and tertiary carriage supporting the second vehicle component such that when the other one of the secondary carriage and tertiary carriage is accelerated by the driving member so that the other one of the secondary carriage and tertiary carriage will impact the second vehicle component the main sled carriage will be accelerated at the main sled carriage rate via the acceleration absorption assembly.

19. The sled testing system of claim 18 wherein the tertiary carriage is movably mounted to the main sled carriage.

20. The sled testing system of claim 19 further including a shock absorption assembly connected between the tertiary carriage and the main sled carriage.

21. The sled testing system of claim 18 wherein the first vehicle component is a vehicle interior component and the second vehicle component is a vehicle exterior component.

22. The sled testing system of claim 18 wherein a shock absorption assembly is located so as to operably engage the main sled carriage and tertiary carriage.

23. The sled testing system of claim 18 wherein the other one of the second carriage and tertiary carriage supports a barrier which impacts the second vehicle component.

24. The sled testing system of claim 23 wherein the barrier is collapsible.

25. A sled testing system having rails and a driving member, the sled testing system comprising:

a first carriage movably mounted on the rails,

a second carriage movably mounted on the first carriage, and

an acceleration absorption assembly located relative to the first carriage and the second carriage such that when the second carriage is accelerated by the driving member at a second carriage rate, the first carriage will be accelerated at a first carriage rate.

26. The sled testing system of claim 25 wherein the acceleration absorption assembly is connected to the first carriage and the second carriage.

27. The sled testing system of claim 25 wherein the acceleration absorption assembly includes a backing cylinder from which extends an absorption piston, one of the backing cylinder and absorption piston being mounted to the first carriage and the other one of the backing cylinder and absorption piston being mounted to the second carriage.

28. A sled testing system having a driving member, the sled testing system comprising:

a first carriage,

a second carriage, the first carriage and second being movably mounted together, and

an acceleration absorption assembly including a backing cylinder from which extends an absorption piston, one of the backing cylinder and absorption piston being mounted to the first carriage and the other one of the backing cylinder and absorption piston being mounted to the second carriage, such that when the second carriage is accelerated by the driving member at a second carriage rate, the first carriage will be accelerated at a first carriage rate via the acceleration absorption assembly.

29. A sled testing system having a driving member, the sled testing system comprising:

a movable main sled carriage,

a second carriage movably mounted to the main sled carriage,

an impacter carriage movably mounted to the main sled carriage, and

an acceleration absorption assembly located relative to the first carriage and the second carriage such that when the impacter carriage is accelerated by the driving member to impact and accelerate the secondary carriage at a secondary carriage rate the main sled carriage will be accelerated at a main sled carriage rate via the acceleration absorption assembly.