Helmets and helmet fit systems

摘要

Helmets and helmet fit systems are disclosed herein. The helmets include a shell and the helmet fit system. The helmet fit system includes a passive adjustment mechanism. The passive adjustment mechanism is configured to automatically and passively vary a length of a perimeter that is defined by the helmet responsive to a tension force that is applied to the passive adjustment mechanism by a remainder of the helmet. Some helmet fit systems further include a manual adjustment mechanism configured to receive user input for selectively increasing and decreasing the length of the perimeter.

主权项

1. A helmet comprising:
a shell; and a helmet fit system, wherein the helmet fit system includes: a manual adjustment mechanism operatively coupled to the shell and, together with the shell, defining a perimeter within which a head of a wearer is positioned when the helmet is donned by the wearer, wherein the manual adjustment mechanism includes an adjuster assembly including a user input member configured to receive user input for selectively increasing and decreasing a length of the perimeter, wherein the manual adjustment mechanism further includes a left arm configured to operatively interconnect the adjuster assembly to a left region of the shell, wherein the manual adjustment mechanism further includes a right arm configured to operatively interconnect the adjuster assembly to a right region of the shell, and wherein the manual adjustment mechanism further includes at least one arm extension that operatively couples the helmet fit system to the shell; and (ii) at least one passive adjustment mechanism configured to automatically and passively vary the length of the perimeter responsive to a tension force that is applied to the passive adjustment mechanism by a remainder of the helmet fit system when the helmet is donned by the wearer, wherein the passive adjustment mechanism includes a resilient and flexible body configured to reversibly stretch in a longitudinal direction that is aligned with the perimeter to automatically and passively vary the length of the perimeter, wherein the resilient and flexible body extends between the at least one arm extension and the adjuster assembly of the manual adjustment mechanism, wherein the resilient and flexible body has a modulus of elasticity that is less than 30% of a modulus of elasticity of at least one of the left arm of the manual adjustment mechanism and the right arm of the manual adjustment mechanism.