| 摘要 |
A pretensioner-proof buckle comprises a buckle for a vehicle safety restraint mechanism, the buckle comprising: ```a housing having a rectilinear channel for receiving a fastening member 2; ```a latching element 4 mounted within the housing and moveable between a first position in which it engages the fastening member and a second position in which the fastening member is released; ```a release button 10 operatively connected to the latching element for effecting movement thereof between the first and second positions; ```a blocking member 11 movable to engage the latching element to prevent movement of the latching element towards the release position; ```and an inertial mass 14 pivotally mounted to the release button, and being arranged to act on the blocking member 11 to move it into engagement with the latching element during the acceleration phase of a pretensioning operation (fig 2) and thus secure the buckle against spurious release earlier than in previously known arrangements. |
