Releasable locking element

The device has rail elements that are fixed at housing (1). The latching force spring (4) and frictional force spring (6) are supported on housing. The latching force spring is provided for pre-tensioning the locking bolt (5) against the rail elements. The frictional force spring is provided for pressing the friction element (7) slightly against the rail element. An independent claim is included for telescopic rail or linear guide.