Omnidirectional energy management systems and methods
Systems and methods of a safety helmet for protecting the human head against repetitive impacts, moderate impacts and severe impacts so as to significantly reduce the likelihood of both translational and rotational brain injury and concussions may be provided. The helmet may include an outer shell, an outer liner disposed within and coupled to the outer shell, and an inner liner disposed within and coupled in spaced opposition to the outer liner by a damper array. The damper array may allow for omnidirectional movement of the inner liner relative to the outer liner and the outer shell.
1. A helmet comprising:
an outer shell;
an outer liner disposed within and coupled to the outer shell;
an inner liner disposed within and coupled to the outer liner;
an aligner coupled to the outer liner and the inner liner and configured to position the outer liner relative to the inner liner; and
a lug coupled to one of the outer liner or the inner liner and configured to slide within a recess on the other of the outer liner or the inner liner to allow omnidirectional movement of the inner liner relative to the outer liner and the outer shell.
2. The helmet of claim 1 , wherein the lug is configured to compress upon receiving at least an orthogonal component of a force to the inner liner and/or the outer liner.
3. The helmet of claim 1 , wherein the lug is disposed between the outer liner and the inner liner.
4. The helmet of claim 1 , further comprising a substrate disposed between the outer liner and the inner liner, wherein the aligner is coupled to the substrate, and wherein the aligner is coupled to one or both of the outer liner or the inner liner via the substrate.
5. The helmet of claim 1 , further comprising a sliding disc coupled to the lug.
6. The helmet of claim 5 , wherein the sliding disc is configured to slide on the other of the outer liner or the inner liner.
7. The helmet of claim 6 , wherein the lug comprises a sliding surface configured to slide on a surface of the other of the outer liner or the inner liner.
8. The helmet of claim 6 , wherein the one of the outer liner or the inner liner comprises the lug.
9. The helmet of claim 4 , further comprising an attachment damper and a snap base, wherein both the attachment damper and the snap base are coupled to the substrate, wherein attachment damper is coupled to the outer liner, and wherein the snap base is coupled to the inner liner.
10. The helmet of claim 1 , further comprising a secondary damper.
11. The helmet of claim 10 , wherein the lug is a first rate and the secondary damper is a second rate.
12. The helmet of claim 10 , wherein the lug is configured to compress upon receiving a first force orthogonal to the inner liner and/or the outer liner and the secondary damper is configured to compress upon receiving a second force orthogonal to the inner liner and/or the outer liner.
13. The helmet of claim 10 , wherein the one of the inner liner and/or the outer liner comprises the lug and a recess, and wherein the secondary damper is disposed within the recess.
14. The helmet of claim 1 , wherein the aligner is an elastomeric aligner configured to compress upon receiving at least an orthogonal component of a force to the inner liner and/or the outer liner.
15. The helmet of claim 1 , wherein the aligner is an elastic band and wherein at least a portion of the aligner is molded to the inner liner and/or the outer liner.
16. The helmet of claim 1 , further comprising a substrate disposed between the outer liner and the inner liner and configured to receive at least the aligner.
17. The helmet of claim 1 , wherein at least one of the outer liner, the inner liner, and/or the damper comprises a non-Newtonian material.
18. The helmet of claim 1 , further comprising a damper array, wherein the damper array comprises:
a plurality of dampers, each damper with a first end and a second end; and
a first substrate, wherein the first ends of the plurality of dampers are coupled to the first substrate and the first substrate is coupled to at least one of the outer liner and the inner liner,
a second substrate, wherein:
the second ends of the plurality of dampers are coupled to the second substrate,
the first substrate is coupled to the inner liner, and
the second substrate is coupled to the outer liner.
19. A method of assembling the helmet of claim 1 , the method comprising:
disposing and coupling the outer liner within the outer shell;
disposing the aligner within the outer liner;
coupling the aligner to the outer liner;
disposing the inner liner within the outer liner, wherein the aligner is disposed between the inner liner and the outer liner and the one of the outer liner or the inner liner comprises
a lug; and
coupling the inner liner to the aligner.
20. A method of servicing the helmet of claim 1 , the method comprising:
decoupling a removable liner of the helmet, wherein the removable liner comprises one or more of the outer liner, the inner liner, the aligner, or the lug;
disposing an undamaged removable liner; and
coupling the undamaged removable liner to the helmet.