Patent ID: 8341771
Filing Date: 2013-01-01
Classification: A42B

Abstract:
1. An opening/closing apparatus capable of manipulating a sun visor, which is opened and closed at a front side of a front opening of a helmet main body, from a top portion of the helmet, the opening/closing apparatus comprising: a sliding member in which its one end portion is coupled to a central top end portion of a sun visor, and a grip helping the sliding member to move forwards and backwards is formed at another end portion; a guide holder that is attached to an inner top portion of the helmet main body and guides a forward and a backward movement of the sliding member; and a damper that is a saw-toothed member and is attached to one side of the guide holder, wherein the sliding member includes a returning spring of which one end is connected with a rear surface of the one end portion of the sliding member, and another end is connected with a bottom surface of the guide holder, wherein the returning spring has elasticity when the sliding member moves forwards, and the sliding member is automatically returned to its said original position from a forward position by the elasticity, so that the sun visor automatically moves to a hidden position, wherein a saw-toothed uneven surface portion is formed at one side surface of the sliding member, and wherein when the sliding member is automatically returned to its original position by the elasticity, the damper rotates in gear with the uneven surface portion and attenuates the elasticity so that the sliding member moves backwards slowly and smoothly, thereby preventing the sun visor moving to the hidden position from colliding with the helmet main body.