Movement device for a helmet for moving a first element of the helmet with respect to a second element of the helmet

Abstract

A movement device for a helmet for moving a first element of the helmet with respect to a second element of the helmet is described. The movement device includes a pivot element for pivoting about an axis of rotation, and a pivot seat, in which the pivot element is arranged. The pivot element includes an eccentric portion or cam, and the pivot seat includes a first seat region and a second seat region. The first seat region is in a position angularly offset and linearly translated with respect to the second seat region. A first position of the pivot element corresponds to the first seat region and a second position of the pivot element corresponds to the second seat region.

1 . A movement device for a helmet for moving a first element of the helmet with respect to a second element of the helmet, comprising:
 a pivot element for pivoting a first element of the helmet with respect to a second element of the helmet about an axis of rotation, and   a seat of rotation for the pivot element,   wherein the pivot element is located at least partially in the seat and includes an eccentric portion or cam, and   wherein said seat includes a first seat region adapted to receive said eccentric portion in a first position of the pivot element, and a second seat region adapted to receive said eccentric portion in a second position of the pivot element, in which the first seat region is in a position angularly offset around the axis of rotation and linearly translated relative to the second seat region, such that the second position of the pivot element is angularly offset around the axis of rotation and linearly translated with respect to the first position of the pivot element, and vice versa.   
     
     
         2 . The movement device according to  claim 1 , wherein the eccentric portion is configured to cooperate with the seat of rotation causing a displacement of the pivot element from the first position to the second position, upon an angular displacement of the first element with respect to the second element about the axis of rotation. 
     
     
         3 . The movement device according to  claim 1 , further comprising a base body fixed to the second element of the helmet, wherein the base body has a recess delimited by a side edge or wall, said recess defining said seat for the pivot and acting as a counter-cam for said eccentric portion. 
     
     
         4 . The movement device according to  claim 3 , wherein the side edge or wall is shaped to define said first seat region and said second seat region. 
     
     
         5 . The movement device according to  claim 4 , wherein the side edge or wall has a respective concave profile for defining said first seat region and a convex profile for defining said second seat region. 
     
     
         6 . The movement device according to  claim 1 , wherein the pivot element comprises an eccentric appendage received in the seat for the pivot element and adapted to be placed in further regions of the seat of rotation, and wherein the eccentric appendage is configured to cooperate with the seat of rotation, causing a displacement of the pivot element from the second position to the first position upon an angular displacement of the first element with respect to the second element about the axis of rotation. 
     
     
         7 . The movement device according to  claim 6 , wherein the seat further comprises
 a third seat region intended to receive the eccentric appendage, when an eccentric portion is located in the second seat region, and   a fourth seat region intended to receive the eccentric appendage, when the eccentric portion is located in the first seat region.   
     
     
         8 . The movement device according to  claim 3 , wherein the side edge defining the seat defines a first shoulder in a third seat region, with an end-of-travel function for the eccentric portion, and a second shoulder in a fourth seat region, with an end-of-travel function. 
     
     
         9 . The movement device according to  claim 1 , further comprising a retainer assembly for retaining the pivot element in the first position and/or in the second position, said retainer assembly including an interaction element associated with the pivot element and at least one interaction counter-element associated with the seat for the pivot. 
     
     
         10 . The movement device according to  claim 9 , wherein at least one of the interaction element and the at least one interaction counter-element is an elastically deformable element. 
     
     
         11 . The movement device according to  claim 9 , wherein the interaction element is a tooth and the at least one interaction counter-element comprises a spring,
 wherein the tooth is adapted to deform a profile of the spring counteracting an elastic force of the spring upon passage of said pivot element between the first position and the second position and vice versa, and   wherein, when the pivot element is in the first position or in the second position, the spring is in an original rest position and retains the tooth of the pivot element.   
     
     
         12 . A helmet including the movement device according to  claim 1 . 
     
     
         13 . The helmet according to  claim 12 , including a visor and/or a chin guard, wherein the visor or the chin guard is said first element of the helmet. 
     
     
         14 . The helmet according to  claim 12 , including a movable flap adapted to close a ventilation opening, wherein said movable flap is said first element of the helmet. 
     
     
         15 . A method for moving a first element of a helmet with respect to a second element of the helmet, said method comprising the steps of:
 associating a pivot element with the first element, wherein said pivot element includes an eccentric portion eccentric with respect to a rotational axis of the pivot element;   associating a seat of rotation for the pivot element with the second element, wherein said seat for the pivot element includes a first seat region adapted to receive said eccentric portion and a second seat region adapted to receive said eccentric portion, and wherein said second seat region is linearly translated and angularly offset around a rotational axis with respect to the first seat region;   positioning the pivot element at least partially in the seat in a first position where the eccentric portion is located in the first seat region; and   moving the pivot element in a second position where the eccentric portion is located in the second seat region,   wherein, when the eccentric portion of the pivot element passes from the first seat region to the second seat region or vice versa, the pivot element performs both a rotation to compensate for angular offsetting between the second seat region and the first seat region and a linear displacement to compensate for linear offsetting between the second seat region and the first seat region.   
     
     
         16 . The method according to  claim 15 , wherein the linear displacement is a forward or backward movement of the first element of the helmet with respect to the second element of the helmet, for spacing apart or moving the first element of the helmet respectively away from or towards the second element of the helmet. 
     
     
         17 . The method according to  claim 15 , wherein:
 the first element of the helmet is a visor, a chin guard or a movable flap of the helmet,
 when the eccentric portion is located in the first seat region, the first position corresponds to an open condition of the visor, the chin guard or the movable flap and, 
 when the eccentric portion is located in the second seat region, the second position corresponds to a closed condition of the visor, the chin guard or the movable flap. 
   
     
     
         18 . The method according to  claim 15 , wherein the eccentric portion moves between said first seat region and said second seat region by means of interaction with a side edge of the seat, said side edge being shaped to define the first seat region and the second seat region. 
     
     
         19 . The method according to  claim 15 , wherein:
 the pivot element is retained in said first position or in said second position by interaction between an interaction element associated with the pivot element and an interaction counter-element associated with the pivot seat, and   at least one of said interaction element and said interaction counter-element is elastically deformable elements such that when the pivot element passes from the first position to the second position or vice versa, at least one of said interaction element and said interaction counter-element is subject to an elastic deformation.