Closing device, particularly for jewels and the like

Abstract

Present invention relates to a closing device, particularly for jewels and like, comprising a main body and at least a hook, hinged each other with said at least a hook movable about a hinging axis, opposed and by the action of first elastic means provided between said main body and said at least a hook, respectively, at least between a closure configuration, wherein a free end of said at least a hook is in contact with an abutment surface defined by said main body, and an opening configuration, wherein said free end is far from said abutment surface, to permit insertion of said at least one hook within a ring body, and vice versa, said device being characterized in that it comprises blocking means in at least one of said configurations, said blocking means comprising, for each one of said at least one hook, at least two grooves, respectively obtained on a lateral surface of said at least one hook, and at least a pawl, sliding housed within a sliding seat, obtained in said main body, along an interception direction substantially perpendicular with respect to said lateral surface, second elastic means being further provided between the bottom of said sliding seat and said at least one pawl to maintain said at least one pawl pushed against said lateral surface, thus blocking said at least one hook with respect to said main body.

1 . Closing device, particularly for jewels and like, comprising a main body and at least a hook, hinged each other with said at least a hook movable about a hinging axis, opposed and by the action of first elastic means provided between said main body and said at least a hook, respectively, at least between a closure configuration, wherein a free end of said at least a hook is in contact with an abutment surface defined by said main body, and an opening configuration, wherein said free end is far from said abutment surface, to permit insertion of said at least one hook within a ring body, and vice versa, said device being wherein it comprises blocking means in at least one of said configurations, said blocking means comprising, for each one of said at least one hook, at least two grooves, respectively obtained on a lateral surface of said at least one hook, and at least a pawl, sliding housed within a sliding seat, obtained in said main body, along an intercepting direction substantially perpendicular with respect to said lateral surface, second elastic means being further provided between the bottom of said sliding seat and said at least one pawl to maintain said at least one pawl pushed against said lateral surface, thus blocking said at least one hook with respect to said main body. 
     
     
         2 . Closing device according to  claim 1 , wherein it comprises a plurality of hooks, hinged to said main body and movable about a hinging axis, opposed and by the action of first elastic means provided between said main body and said at least a hook, respectively, between said closure configuration and said opening configuration, said blocking means acting independently on each one of said hooks. 
     
     
         3 . Closing device according to  claim 2 , wherein said plurality of hooks comprises two hooks hinged to said main body so as to be diametrically opposed each other. 
     
     
         4 . Closing device according to  claim 1 , wherein elastic reaction of said second elastic means acting on said at least one pawl along said hinging axis is higher than thrust along said hinging axis due to elastic reaction of said first elastic means acting on said at least one hook about said hinging axis so as to prevent rotation of said at least one hook with respect to said main body about said hinging axis by said first elastic means with said at least one pawl engaged within one of said grooves. 
     
     
         5 . Closing device according to  claim 1 , wherein said elastic reaction of said second elastic means acting on said at least one pawl along said hinging axis is lower than thrust along said hinging axis generated by the action of a user manually rotating said at least one hook with respect to said main body about said hinging axis so as to permit opening and closure of said closing device. 
     
     
         6 . Closing device according to  claim 1 , wherein said first elastic means comprise, for each one of said at least one hook, a pin spring fit on the pin defining hinging between said at least one hook and said main body, said pin spring having its arms respectively engaged within two cavities, respectively realized by said main body and said at least one hook. 
     
     
         7 . Closing device according to  claim 1 , wherein said second elastic means comprise a helicoidal spring housed within said seat and placed between said housing seat bottom and a thrusting surface defined by part of said at least one pawl opposed with respect to said lateral surface, said at least one pawl comprising an arm, sliding housed within said helicoidal spring to maintain alignment of said at least one pawl along said hinging axis. 
     
     
         8 . Closing device according to  claim 1 , wherein it comprises, for each one of said at least one hook, a mechanical stop surface defined by said main body to prevent too large rotations of said at least one hook when passing from said closure configuration to said opening configuration and vice versa. 
     
     
         9 . Closing device according to  claim 1 , wherein said blocking means comprise a further groove, obtained on said lateral surface of said at least one hook between said at least two grooves, so as to permit blocking of said at least one hook in an intermediate configuration, between said opening configuration and said closure configuration.