element with respect to a fixed element of the vehicle body comprising a fixing plate for anchoring the device on the fixed element and a body which is connected to the fixing plate and forms an abutment for supporting the opening element wherein at least one part of the abutment is elastically deformable by forces produced by the opening element in the longitudinal direction thereof application_number US 92117506 A description a temporary spacing device 1 according to the invention as illustrated in fig1 to 4 comprises a single piece body made of a shaped thermoplastic material and which breaks down on one hand into a fixing plate 2 for temporary anchoring of the device 1 in a fixed element 3 of a vehicle body and on the other hand into an abutment 4 extending perpendicularly and laterally from the fixing plate 2 along a longitudinal axis l and supporting an opening element 6 the fixing plate 2 is equipped with attaching means comprising holes 8 9 each designed to receive a corresponding screw 25 the abutment 4 is generally nine pin shaped and has a substantially parallelepiped base 11 extending vertically to the fixing plate 2 and a substantially cylindrical head 12 connected to the base 11 by a narrowing cross section 13 forming a throttle region this narrowing cross section 13 grants the abutment 4 and more precisely its head 12 on one hand lateral flexibility on both sides of the longitudinal axis l of the abutment 4 and on the other hand longitudinal flexibility i e along the longitudinal axis l of the abutment 4 the rounded cross section of the head 12 then enabling optimal distribution of stresses a temporary spacing device 20 as illustrated in fig5 differs from the previously described temporary spacing.