| 摘要 |
An adjustment mechanism for adjusting a motor vehicle seat, said adjustment mechanism comprising a worm screw mounted in a nut which is carried by a rigid base, the worm screw being mounted to rotate relative to the base. A locking piece is mounted on the base so as to be pushed by the nut into an active position in which said locking piece comes into engagement with the worm screw, when a large axial force is transmitted to the worm screw.
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