An ambidextrous face guard includes an attachment portion having at least two attachment points. The attachment portion extends from a first end of the ambidextrous face guard toward a second end of the ambidextrous face guard along a slope. The ambidextrous face guard includes a protective portion extending from the attachment portion toward the second end of the ambidextrous face guard along the slope. A line of symmetry extends along at least the attachment portion from the first end of the ambidextrous face guard toward the second end of the ambidextrous face guard such that the line of symmetry defines two symmetric portions of the ambidextrous face guard that each extend along at least a portion of a length of the ambidextrous face guard. The ambidextrous face guard is configured to attach to a right side and a left side of a headgear via the attachment points.

A bicycle helmet system comprising a helmet and a chin bar is disclosed. The chin bar is removably coupled to the helmet and wrapped circumferentially around a portion of the helmet. The chin bar may include a rear buckle configured to tighten the chin bar around the helmet. The chin bar may also include two side buckles that engage with side recesses on the helmet when the chin bar is removably coupled to the helmet. The chin bar may also include two alignment protrusions positioned to engage with alignment recesses on the helmet when the chin bar is removably coupled to the helmet.

A helmet with a gear-constraint type transformable chin guard structure may include a shell body, a chin guard and two branches on the chin guard, wherein a supporting base, the branch, an inner gear, an outer gear and a drive member form an associated mechanism, the inner gear and the outer gear are rotatable about fixed axes and constitute a meshing constraint pair, the inner gear and the branch are in sliding fit with each other and constitute a sliding constraint pair, and the drive member transfer the motion of the outer gear to the branch and causes the chin guard to make an extension/retraction displacement relative to the shell body, such that the chin guard makes an turnover motion while also recombining a reciprocating motion, thereby realizing a transformation between a full-helmet position and a semi-helmet position.

A helmet assembly having a helmet, a mandible guard, and an accessory attachment system that is used to selectively attach and secure the mandible guard to the helmet is disclosed. In some embodiments, the mandible guard is arranged to be detached from a first side of the helmet while remaining secured to a second side of the helmet. In such embodiments, the mandible guard may be moved outwardly and away from a wearer as the mandible guard pivots around the accessory attachment system attached to the second side of the helmet.

A helmet assembly includes a face shield and a single, center top mounting arrangement that operatively connects a center top location of the face shield to a center front mount on the helmet. The face shield can be raised and lowered about a pivot axis provided in the mounting arrangement between a tilted up, non-use position and a lowered, deployed position. The mounting arrangement can include a detent and two recesses, wherein the detent engages a first recess at a slightly forwardly displaced position to allow ventilation between the helmet and mandible and the face shield and a second recess at the tilted up, non-use position. The recess and detent engagement can be overcome by easy manual force acting on the face shield to reposition the face shield.

A helmet includes a shell having an interior surface, a padding disposed along the interior surface of the shell, and a chinbar. The padding defines a first engagement surface positioned at a first lateral side of the padding and a second engagement surface positioned at an opposing second lateral side of the padding. The chinbar includes a cage, a first flange, and a second flange. The cage includes a first end defining a third engagement surface and a second end defining a fourth engagement surface. The third engagement surface interfaces with the first engagement surface and the fourth engagement surface interfaces with the second engagement surface. The first flange extends from the first end of the cage. The second flange extends from the second end of the cage. The first flange and the second flange of the chinbar are embedded within the padding.

A helmet assembly having a helmet, a mandible guard, and an accessory attachment system that is used to selectively attach and secure the mandible guard to the helmet is disclosed. In some embodiments, the mandible guard is arranged to be detached from a first side of the helmet while remaining secured to a second side of the helmet. In such embodiments, the mandible guard may be moved outwardly and away from a wearer as the mandible guard pivots around the accessory attachment system attached to the second side of the helmet.

A helmet includes a shell having an interior surface, a padding disposed along the interior surface of the shell, and a chinbar. The padding defines a first engagement surface positioned at a first lateral side of the padding and a second engagement surface positioned at an opposing second lateral side of the padding. The chinbar includes a cage, a first flange, and a second flange. The cage includes a first end defining a third engagement surface and a second end defining a fourth engagement surface. The third engagement surface interfaces with the first engagement surface and the fourth engagement surface interfaces with the second engagement surface. The first flange extends from the first end of the cage. The second flange extends from the second end of the cage. The first flange and the second flange of the chinbar are embedded within the padding.

A helmet can include a protective shell and a layer of energy management material coupled to an inner surface of the protective shell to form a cavity for receiving a head of a user. An earpad can be coupled to the inner surface of the protective shell that comprises an inner surface that further defines a space for an ear of a user. The earpad can further include a leading edge at a front of the helmet, the leading edge extending between the outer surface of the protective shell and the inner surface of the earpad. An air intake opening can be formed at the leading edge of the earpad. An air exhaust opening can be formed at a trailing edge of the earpad. An airflow channel can extend through the earpad between the air intake opening and the air exhaust opening.

A helmet according to the present invention includes: a head frame being open toward the user's face, designed to cover the user's head, and having a rotation part at both sides; a face frame coupled to be turned up and down about the rotation parts and selectively closing the opening of the head frame; and a sun visor disposed at an upper portion of the face frame and coupled to be turned up and down about the rotation parts, in which the sun visor is turned up with the face frame when the face frame is turned up to open the opening of the head frame, and is fixed regardless of rotation of the face frame when a predetermined rotational limit is reached.