Crash locking device

A telescopic rail comprising

• a first rail and,
• a second rail, wherein the first rail and the second rail are supported against each other so as to be linearly slidable in relation to each other in an extending direction from a first position into a second position,
• wherein the telescopic rail furthermore has a locking device, wherein the locking device comprises
• a stop element on the first rail,
• a mass element held on the second rail and movable in relation to the second rail in the extending direction or against the extending direction,
• a spring element resiliently pretensioning the mass element with a spring force, and
• a locking element,
• wherein the spring force has a force direction in the extending direction or against the extending direction,
• wherein the mass element is movable against the spring force from an idle position into a triggering position, and
• wherein through a movement of the mass element against the spring force the locking element is movable from an unlocked position into a locking position such that the locking element in the locking position can be brought into engagement with the stop element.