Helmet

Abstract

A helmet includes a main body, a chin protecting member, and a face shield. The main body has a front opening, a bottom passage, and two opposing connecting portions sticking forwards from two lateral portions; the connecting portions each has a front opening in communication with an inner space thereof. The chin protecting member is pivoted to the lateral portions of the main body from two lateral portions thereof such that a front portion of the chin member can be positioned at a lower part of the opening of the main body so as to protect a chin of a wearer when the chin member is pivoted to an in-use position; the chin member is provided with a lock member for securing the same to the connecting portions of the main body when the chin member is moved to the in-use position. The face shield is pivotally connected to the chin member for covering the front opening.

What is claimed is:  
     
         1 . A helmet, comprising: 
 a main body having a front opening and a bottom passage, said main body having two opposing connecting portions sticking forwards from two lateral portions, said connecting portions each having a front opening communicating with an inner space thereof;    a chin protecting member being pivoted to the lateral portions of said main body from said two lateral portions thereof so as for a front portion of said chin member to be positioned at a lower part of said opening of said main body and to protect a chin of a wearer when said chin member being pivoted to an in-use position, said chin member being provided with a lock member for securing the same to said connecting portions of said main body when said chin member being moved to the in-use position; and,    a face shield being pivotally connected to said chin member for covering said front opening.    
     
     
         2 . The helmet as recited in  claim 1 , wherein said lock member includes a pair of movable locking elements and a control part, said control part is pivoted to said chin member, said control part is connected to said locking elements by means of a connecting rod so that said locking elements can move towards said front portion of said helmet when said control part is operated, and said locking elements are biased towards a rear portion of said helmet by means of springs so as to respectively engage said front openings of said connecting portions of said main body when said chin member is pivoted to the in-use position, thus preventing said chin member from falling off the in-use position.  
     
     
         3 . The helmet as recited in  claim 2 , wherein two stationary elements are disposed adjacent to said locking elements, said stationary elements each has a plurality of guiding blocks for guiding said locking elements, and said stationary elements each has a front locating ends capable of first passing through said openings of said connecting portions of said main body for helping the engaging ends of said locking elements to engage said connecting portions when said chin member is moved to the in-use position.