Hair grip with a connection working in elongation

Abstract

Hair grip comprising two jaws ( 1, 3 ) articulated about a joint ( 61, 62; 81, 82; 54; 29 ) for relative displacement into an open or closed position and a connection ( 11, 12 ) joining each jaw to exert a return force by a deformation in elongation against the displacement of the two jaws from the closed position to the open position in order to return the two jaws to the closed position. According to the invention the joint is provided with a passage to permit the connection ( 11, 12 ) to cross the joint once the two jaws are displaced from the closed position to the open position to exert a return force for returning the two jaws to the open position. Preferably the connection ( 12 ) is housed in two joint supports ( 131, 151 ) fixed to the jaws by two feet ( 133, 153 ) and joined together by two heads ( 135, 155 ) extending in a joint direction (A), above the feet ( 133, 153 ) to mask the connection ( 12 ) in the closed position.

1 . Hair grip comprising
 two jaws ( 1 ,  3 ) articulated about a joint ( 5 ,  54 ,  29 ) for relative displacement into an open or closed position, and   a self-closing connection ( 12 ) exerting a return force by a deformation in elongation against the displacement of the two jaws from the closed position to the open position, in order to return the two jaws to the closed position,   two joint supports, each of the two joint supports ( 131 , 151 ) having a foot ( 133 ,  153 ) and a head ( 135 ,  155 ), a first of the joint supports being integral with a first of the jaws by its foot and a second of the joint supports being integral with a second of the jaws by its foot, the joint supports being joined together by their heads to form the joint ( 5 ,  54 ,  29 ) for relative displacement of the jaws into the open or closed position,   wherein the connection is received in respective notches ( 18 ,  20 ) formed in the two joint supports ( 131 ,  151 ),   and wherein a dimension of the respective heads ( 133 ,  135 ) of the joint supports in a direction of an axis (A) of the joint ( 5 ,  54 ,  29 ) is larger than a dimension of the respective feet ( 133 , 153 ) of the joint supports in the direction of the axis (A) so as to mask the connection ( 12 ) in the closed position.   
   
   
       2 . Hair grip according to  claim 1 , characterised in that the two jaws ( 1 ,  3 ) are articulated by two coaxial pins ( 61 ,  62 ) by two coaxial cylindrical linkages ( 81 , 82 ) or by a pin ( 54 ) or a cylindrical linkage provided with two apertures ( 52 ,  56 ) formed on both sides of the pin ( 54 ) or the cylindrical linkage to allow the connection ( 12 ) to cross between the two coaxial pins or between the two coaxial cylindrical linkages or to cross the joint pin ( 54 ) or the cylindrical linkage by being displaced in the apertures ( 52 ,  56 ), once the two jaws are displaced from the closed position to the open position to exert a return force for returning the two jaws to the open position. 
   
   
       3 . Hair grip according to  claim 2 , characterised in that the two jaws ( 1 ,  3 ) are articulated by means of a joint part ( 29 ) carrying a first pair of coaxial pins ( 61 ,  62 ) or cylindrical linkage ( 81 ,  82 ) to articulate one (1) of the two jaws and a second pair of coaxial pins ( 63 ,  64 ) or cylindrical linkages ( 83 ,  84 ) to articulate the other jaw ( 3 ). 
   
   
       4 . Hair grip according to  claim 1 , wherein two shell portions ( 2 ) are arranged on a hair grip framework constituted by the two jaws ( 1 ,  3 ) articulated about the joint ( 5 ,  54 ) and the self-closing connection ( 12 ) received in the notches ( 18 ,  20 ) formed in the two joint supports ( 131 ,  151 ) fixed to the jaws by the two feet ( 133 ,  153 ) and joined together by the two heads ( 135 ,  155 ) extending in the joint direction (A) above the feet ( 133 ,  153 ), said two shell portions ( 2 ) masking the self-closing connection ( 12 ). 
   
   
       5 . Hair grip according to  claim 2 , wherein the two shell portions ( 2 ) are provided with lever arms. 
   
   
       6 . Hair grip comprising two jaws ( 1 ,  3 ) articulated about a joint ( 5 ,  54 ,  29 ) for relative displacement into an open or closed position and a self-closing connection ( 12 ) received in notches ( 18 ,  20 ) formed in two joint supports ( 131 ,  151 ) integral with to the respective jaws by two feet ( 133 ,  153 ) and joined together by two heads ( 135 , 155 ) to form said joint ( 5 ,  54 ,  59 ), said connection exerting a return force by a deformation in elongation against the displacement of the two jaws from the closed position to the open position, in order to return the two jaws to the closed position, wherein two shell portions ( 2 ) are arranged on respective outside faces of the two jaws ( 1 ,  3 ) so as to cover the self-closing connection ( 12 ). 
   
   
       7 . Hair grip according to  claim 6 , wherein the two shell portions ( 2 ) are provided with lever arms. 
   
   
       8 . Hair grip according to  claim 6 , characterised in that the two jaws ( 1 ,  3 ) are articulated by two coaxial pins ( 61 ,  62 ) by two coaxial cylindrical linkages ( 81 , 82 ) or by a pin ( 54 ) or a cylindrical linkage provided with two apertures ( 52 ,  56 ) formed on both sides of the pin ( 54 ) or the cylindrical linkage to allow the connection ( 12 ) to cross between the two coaxial pins or between the two coaxial cylindrical linkages or to cross the joint pin ( 54 ) or the cylindrical linkage by being displaced in the apertures ( 52 ,  56 ), once the two jaws are displaced from the closed position to the open position to exert a return force for returning the two jaws to the open position. 
   
   
       9 . Hair grip according to  claim 8 , characterised in that the two jaws ( 1 ,  3 ) are articulated by means of a joint part ( 29 ) carrying a first pair of coaxial pins ( 61 ,  62 ) or cylindrical linkage ( 81 ,  82 ) to articulate one (1) of the two jaws and a second pair of coaxial pins ( 63 ,  64 ) or cylindrical linkages ( 83 ,  84 ) to articulate the other jaw ( 3 ).