| 摘要 |
The invention relates to a spring lock comprising, in a known way, a body, a case, a cylindrical rotor, tumblers, at least one stop collar, and means making it possible to retain the tumblers in place and return them into position. According to the invention, the collar 40 is movable, and the lock comprises a device for the load-break blocking of the position of the collar 40, which, in the absence of abnormal forces, is intended for keeping the latter in the normal operating position, in which it is coaxial with the rotor, and which is intended subsequently to allow a displacement, irreversible or not, of the collar 40 when the latter is subjected to an abnormal torque exceeding a predetermined threshold. <IMAGE>
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