Screw-nut assembly including an integrated, immediately effective securing arrangement for preventing unintentional loosening of a screwed connection formed thereby

A screw-nut assembly including an integrated, immediately effective securing arrangement for preventing unintentional loosening of a screwed connection formed thereby, comprising a first screw connection body and an associated second screw connection body,

• wherein
• one of the first and second screw connection bodies comprises a free-wheel mechanism connected thereto,
• a releasable coupling arrangement is provided between the free-wheel mechanism and the other one of the first and second screw connection bodies,
• the releasable coupling arrangement connects the free-wheel mechanism and the other one of the first and second screw connection bodies in a mutually non-rotatable manner when the coupling arrangement is in a blocked state and disconnects the free-wheel mechanism from the other one of the first and second screw connection bodies when the coupling arrangement is in a released state,
• the free-wheel mechanism is provided in such a manner that the screw connection bodies are rotatable in a direction of rotation (F) corresponding to the tightening of the screwed connection, when the coupling arrangement is in the blocked state,
• in the blocked state of the coupling arrangement the free-wheel mechanism blocks relative movement of the first and second screw connection bodies in a direction of rotation (L) corresponding to a loosening of the screwed connection, and
• in the released state of the coupling arrangement relative movement in the direction of rotation (L) corresponding to a loosening of the screwed connection is allowed,
• wherein the free-wheel mechanism comprises a cage containing rollers which interact with blocking ramp surfaces on the outer periphery of a sleeve that is inserted into the cage provided with the rollers.

A screw-nut assembly including an integrated, immediately effective securing arrangement for preventing unintentional loosening of a screwed connection formed thereby, comprising a first screw connection body and an associated second screw connection body,

• wherein
• one of the first and second screw connection bodies comprises a free-wheel mechanism connected thereto,
• a releasable coupling arrangement is provided between the free-wheel mechanism and the other one of the first and second screw connection bodies,
• the releasable coupling arrangement connects the free-wheel mechanism and the other one of the first and second screw connection bodies in a mutually non-rotatable manner when the coupling arrangement is in a blocked state and disconnects the free-wheel mechanism from the other one of the first and second screw connection bodies when the coupling arrangement is in a released state,
• the free-wheel mechanism is provided in such a manner that the screw connection bodies are rotatable in a direction of rotation (F) corresponding to the tightening of the screwed connection, when the coupling arrangement is in the blocked state,
• in the blocked state of the coupling arrangement the free-wheel mechanism blocks relative movement of the first and second screw connection bodies in a direction of rotation (L) corresponding to a loosening of the screwed connection, and
• in the released state of the coupling arrangement relative movement in the direction of rotation (L) corresponding to a loosening of the screwed connection is allowed,
• wherein
• the coupling arrangement comprises first coupling means and second coupling means,
• the first coupling means and the second coupling means are formed in such a manner that they automatically engage with each other when tightening the screw connection bodies and create a mutually non-rotatable connection between the second screw connection body and the driver member, and
• an uncoupling device is provided in order to uncouple the coupling means from each other for the purposes of loosening the screwed connection.

A screw-nut assembly including an integrated, immediately effective securing arrangement for preventing unintentional loosening of a screwed connection formed thereby, comprising a first screw connection body and an associated second screw connection body,

• wherein
• one of the first and second screw connection bodies comprises a free-wheel mechanism connected thereto,
• a releasable coupling arrangement is provided between the free-wheel mechanism and the other one of the first and second screw connection bodies,
• the releasable coupling arrangement connects the free-wheel mechanism and the other one of the first and second screw connection bodies in a mutually non-rotatable manner when the coupling arrangement is in a blocked state and disconnects the free-wheel mechanism from the other one of the first and second screw connection bodies when the coupling arrangement is in a released state,
• the free-wheel mechanism is provided in such a manner that the screw connection bodies are rotatable in a direction of rotation (F) corresponding to the tightening of the screwed connection, when the coupling arrangement is in the blocked state,
• in the blocked state of the coupling arrangement the free-wheel mechanism blocks relative movement of the first and second screw connection bodies in a direction of rotation (L) corresponding to a loosening of the screwed connection, and
• in the released state of the coupling arrangement relative movement in the direction of rotation (L) corresponding to a loosening of the screwed connection is allowed,
• wherein
• the first and the second screw connection bodies each comprise a respective axial boring,
• the free-wheel mechanism is arranged in the axial boring of the first or second screw connection body, and
• a driver member is inserted into the axial boring of the first screw connection body.

A screw-nut assembly including an integrated, immediately effective securing arrangement for preventing unintentional loosening of a screwed connection formed thereby, comprising a first screw connection body and an associated second screw connection body,

• wherein
• one of the first and second screw connection bodies comprises a free-wheel mechanism connected thereto,
• a releasable coupling arrangement is provided between the free-wheel mechanism and the other one of the first and second screw connection bodies,
• the releasable coupling arrangement connects the free-wheel mechanism and the other one of the first and second screw connection bodies in a mutually non-rotatable manner when the coupling arrangement is in a blocked state and disconnects the free-wheel mechanism from the other one of the first and second screw connection bodies when the coupling arrangement is in a released state,
• the free-wheel mechanism is provided in such a manner that the screw connection bodies are rotatable in a direction of rotation (F) corresponding to the tightening of the screwed connection, when the coupling arrangement is in the blocked state,
• in the blocked state of the coupling arrangement the free-wheel mechanism blocks relative movement of the first and second screw connection bodies in a direction of rotation (L) corresponding to a loosening of the screwed connection, and
• in the released state of the coupling arrangement relative movement in the direction of rotation (L) corresponding to a loosening of the screwed connection is allowed,
• wherein the free-wheel mechanism comprises a cage containing rollers which interact with blocking ramp surfaces placed radially outwardly with respect to the rollers.