Tension regulator for a safety belt of a seat, in particular a child saftey seat

Abstract

A tension regulator for a safety belt of a seat, in particular a child safety seat, is provided with a metal body having a contrast cross member and with a slider, which is also made of metal; the slider has a retention cross member, wound on which is a strap of the safety belt, and is slidable with respect to the body for exerting a nipping action on said strap between the retention cross member and the contrast cross member; the body has a guide cross member, which defines, with the contrast cross member, a passage that can be engaged by the strap for keeping the strap folded on an edge of said contrast cross member.

1 . A tension regulator ( 19 ) for a safety belt ( 9 ) of a seat ( 1 ), in particular a child safety seat, the regulator comprising:
 a body ( 32 ), made of a single piece of metal material and comprising:   a) an attachment portion ( 21 ), and   b) a contrast cross member ( 37 );   a retention cross member ( 53 ), coupled to said body ( 32 ) in a position such as to remain wound, in use, by a strap ( 10 ) of said safety belt ( 9 ), and movable in a longitudinal direction ( 34 ) between:   a) an advanced position towards said contrast cross member ( 37 ), for exerting a nipping action on said strap ( 10 ) between said contrast cross member ( 37 ) and retention cross member ( 53 ); and   b) a retracted position, for leaving said strap ( 10 ) free to slide in the space between said contrast cross member ( 37 ) and retention cross member ( 53 ); and   an actuation portion ( 55 ), which can be pressed manually for displacing said retention cross member ( 53 ) into its retracted position;   
     said regulator being characterized in that said body ( 32 ) comprises a guide cross member ( 49 ), defining, with said contrast cross member ( 37 ), a passage ( 48 ) that can be engaged by said strap ( 10 ) for keeping said strap ( 10 ) folded around an edge ( 60 ) of said contrast cross member ( 37 ). 
   
   
       2 . The regulator according to  claim 1 , characterized in that said retention cross member ( 53 ) and said actuation portion ( 55 ) form part of a slider ( 33 ) made of a single piece. 
   
   
       3 . The regulator according to  claim 2 , characterized in that said slider ( 33 ) is defined by a steel plate made starting from a blanked and bent sheet. 
   
   
       4 . The regulator according to  claim 2 , characterized in that it further comprises elastic means ( 45 ) arranged between said slider ( 33 ) and said body ( 32 ) for pushing said retention cross member ( 53 ) towards its advanced position. 
   
   
       5 . The regulator according to  claim 4 , characterized in that said elastic means comprise two springs ( 45 ) coupled to respective lateral portions ( 47 ) of said slider ( 33 ). 
   
   
       6 . The regulator according to  claim 2 , characterized in that said body ( 32 ) comprises two lateral guide portions ( 39 ) defining respective channels ( 42 ) parallel to said longitudinal direction ( 34 ) for guiding said slider ( 33 ). 
   
   
       7 . The regulator according to  claim 5 , characterized in that said springs ( 45 ) are housed in said channels ( 42 ). 
   
   
       8 . The regulator according to  claim 2 , characterized in that said slider ( 33 ) has an opening ( 52 ), defined by said retention cross member ( 53 ), by two lateral portions ( 56 ), and by a front cross member ( 54 ), starting from which said actuation portion ( 55 ) extends in cantilever fashion. 
   
   
       9 . The regulator according to  claim 1 , characterized in that said guide cross member ( 49 ) lies in a plane parallel to said contrast cross member ( 37 ) and set at a distance from said contrast cross member ( 37 ) in a direction opposite to said retention cross member ( 53 ).