Trailer coupling

A trailer coupling for motor vehicles, comprising:

• a bearing part arranged so as to be fixed on the vehicle,
• a ball neck movable in relation to the bearing part between an operative position and a rest position, said ball neck being mounted on the bearing part by means of a bearing head so as to be at least rotatable,
• a ball neck fixing means comprising first and second form locking elements transferable due to relative movement from a fixing position into a release position,
• the bearing head being secured in a form-locking manner relative to the bearing part in said fixing position and being movable in relation to the bearing part in said release position, and vice versa,
• first form locking elements arranged on the bearing part and second form locking elements arranged on the bearing head,
• the bearing head being movable relative to the bearing part in a direction transverse to a pivoting direction in order to move the form locking elements between the fixing position and the release position, and
• a mechanical positioning device for bringing about the relative movement of the first and second form locking elements in order to reach the fixing position and the release position,
• the positioning device having a mechanism automatically maintaining a stable position of the positioning device in the fixing position.

A trailer coupling for motor vehicles, comprising:

• a bearing part arranged so as to be fixed on the vehicle,
• a ball neck movable in relation to the bearing part between an operative position and a rest position, said ball neck being mounted on the bearing part by means of a bearing head so as to be at least rotatable,
• a ball neck fixing means comprising first and second form locking elements transferable due to relative movement from a fixing position into a release position,
• the bearing head being secured in a form-locking manner relative to the bearing part in said fixing position and being movable in relation to the bearing part in said release position, and vice versa,
• first form locking elements arranged on the bearing part and second form locking elements arranged on the bearing head,
• the bearing head being movable relative to the bearing part in a direction transverse to a pivoting direction in order to move the form locking elements between the fixing position and the release position, and
• a mechanical positioning device for bringing about the relative movement of the first and second form locking elements in order to reach the fixing position and the release position,
• the positioning device having a tensioning position as fixing position, the positioning device generating a force contributing to a tensioning force acting on the bearing head in said tensioning position.

A trailer coupling for motor vehicles, comprising:

• a bearing part arranged so as to be fixed on the vehicle,
• a ball neck movable in relation to the bearing part between an operative position and a rest position, said ball neck being mounted on the bearing part by means of a bearing head so as to be at least rotatable,
• a ball neck fixing means comprising first and second form locking elements transferable due to relative movement from a fixing position into a release position, the bearing head being secured in a form-locking manner relative to the bearing part in said fixing position and being movable in relation to the bearing part in said release position, and vice versa,
• first form locking elements arranged on the bearing part and second form locking elements arranged on the bearing head,
• the bearing head being movable relative to the bearing part in a direction transverse to a pivoting direction in order to move the form locking elements between the fixing position and the release position, and
• a mechanical positioning device for bringing about the relative movement of the first and second form locking elements in order to reach the fixing position and the release position,
• the positioning device being adapted to be actuated by a triggering device.

A trailer coupling for motor vehicles, comprising:

• a bearing part arranged so as to be fixed on the vehicle,
• a ball neck movable in relation to the bearing part between an operative position and a rest position, said ball neck being mounted on the bearing part by means of a bearing head so as to be at least rotatable,
• a ball neck fixing means comprising first and second form locking elements transferable due to relative movement from a fixing position into a release position, the bearing head being secured in a form-locking manner relative to the bearing part in said fixing position and being movable in relation to the bearing part in said release position, and vice versa,
• first form locking elements arranged on the bearing part and second form locking elements arranged on the bearing head,
• the bearing head being movable relative to the bearing part in a direction transverse to a pivoting direction in order to move the form locking elements between the fixing position and the release position, and
• a mechanical positioning device for bringing about the relative movement of the first and second form locking elements in order to reach the fixing position and the release position,
• the positioning device acting on the bearing head via a coupling device.

A trailer coupling for motor vehicles, comprising:

• a bearing part arranged so as to be fixed on the vehicle,
• a ball neck movable in relation to the bearing part between an operative position and a rest position, said ball neck being mounted on the bearing part by means of a bearing head so as to be at least rotatable,
• a ball neck fixing means comprising first and second form locking elements transferable due to relative movement from a fixing position into a release position, the bearing head being secured in a form-locking manner relative to the bearing part in said fixing position and being movable in relation to the bearing part in said release position, and vice versa,
• first form locking elements arranged on the bearing part and second form locking elements arranged on the bearing head,
• the bearing head being movable relative to the bearing part in a direction transverse to a pivoting direction in order to move the form locking elements between the fixing position and the release position, and
• a mechanical positioning device for bringing about the relative movement of the first and second form locking elements in order to reach the fixing position and the release position,
• the bearing head being adapted to be blocked by a blocking device against any movement from the fixing position in the direction of the release position.

A trailer coupling for motor vehicles, comprising:

• a bearing part arranged so as to be fixed on the vehicle,
• a ball neck movable in relation to the bearing part between an operative position and a rest position, said ball neck being mounted on the bearing part by means of a bearing head so as to be at least rotatable,
• a ball neck fixing means comprising first and second form locking elements transferable due to relative movement from a fixing position into a release position, the bearing head being secured in a form-locking manner relative to the bearing part in said fixing position and being movable in relation to the bearing part in said release position, and vice versa,
• first form locking elements arranged on the bearing part and second form locking elements arranged on the bearing head,
• the bearing head being movable relative to the bearing part in a direction transverse to a pivoting direction in order to move the form locking elements between the fixing position and the release position, and
• a mechanical positioning device for bringing about the relative movement of the first and second form locking elements in order to reach the fixing position and the release position,
• the bearing head having a bearing bore extending at an angle to the horizontal in the state mounted on the vehicle and the form locking elements being arranged on the side of the bearing head where the bearing bore extends closer to the roadway than on the other side.

A trailer coupling for motor vehicles, comprising:

• a bearing part arranged so as to be fixed on the vehicle,
• a ball neck movable in relation to the bearing part between an operative position and a rest position, said ball neck being mounted on the bearing part by means of a bearing head so as to be at least rotatable,
• a ball neck fixing means comprising first and second form locking elements transferable due to relative movement from a fixing position into a release position, the bearing head being secured in a form-locking manner relative to the bearing part in said fixing position and being movable in relation to the bearing part in said release position, and vice versa,
• first form locking elements arranged on the bearing part and second form locking elements arranged on the bearing head,
• the bearing head being movable relative to the bearing part in a direction transverse to a pivoting direction in order to move the form locking elements between the fixing position and the release position, and
• a mechanical positioning device for bringing about the relative movement of the first and second form locking elements in order to reach the fixing position and the release position,
• a bearing bolt extending at an angle to the horizontal and the form locking elements being arranged on the side of the bearing part accommodating the end area of a bearing pin located closest to the roadway.

A trailer coupling for motor vehicles, comprising:

• a bearing part arranged so as to be fixed on the vehicle,
• a ball neck movable in relation to the bearing part between an operative position and a rest position, said ball neck being mounted on the bearing part by means of a bearing head so as to be at least rotatable,
• a ball neck fixing means comprising first and second form locking elements transferable due to relative movement from a fixing position into a release position, the bearing head being secured in a form-locking manner relative to the bearing part in said fixing position and being movable in relation to the bearing part in said release position, and vice versa,
• first form locking elements arranged on the bearing part and second form locking elements arranged on the bearing head,
• the bearing head being movable relative to the bearing part in a direction transverse to a pivoting direction in order to move the form locking elements between the fixing position and the release position, and
• a mechanical positioning device for bringing about the relative movement of the first and second form locking elements in order to reach the fixing position and the release position,
• in an operative position one part of the form locking elements located in fixing position being in engagement.

A trailer coupling for motor vehicles, comprising:

• a bearing part arranged so as to be fixed on the vehicle,
• a ball neck movable in relation to the bearing part between an operative position and a rest position, said ball neck being mounted on the bearing part by means of a bearing head so as to be at least rotatable,
• a ball neck fixing means comprising first and second form locking elements transferable due to relative movement from a fixing position into a release position, the bearing head being secured in a form-locking manner relative to the bearing part in said fixing position and being movable in relation to the bearing part in said release position, and vice versa,
• first form locking elements arranged on the bearing part and second form locking elements arranged on the bearing head,
• the bearing head being movable relative to the bearing part in a direction transverse to a pivoting direction in order to move the form locking elements between the fixing position and the release position, and
• a mechanical positioning device for bringing about the relative movement of the first and second form locking elements in order to reach the fixing position and the release position,
• in the rest position one part of the form locking elements located in fixing position being in engagement.

A trailer coupling for motor vehicles, comprising:

• a bearing part arranged so as to be fixed on the vehicle,
• a ball neck movable in relation to the bearing part between an operative position and a rest position, said ball neck being mounted on the bearing part by means of a bearing head so as to be at least rotatable,
• a ball neck fixing means comprising first and second form locking elements transferable due to relative movement from a fixing position into a release position, the bearing head being secured in a form-locking manner relative to the bearing part in said fixing position and being movable in relation to the bearing part in said release position, and vice versa,
• first form locking elements arranged on the bearing part and second form locking elements arranged on the bearing head, the bearing head being movable relative to the bearing part in a direction transverse to a pivoting direction in order to move the form locking elements between the fixing position and the release position, and
• a mechanical positioning device for bringing about the relative movement of the first and second form locking elements in order to reach the fixing position and the release position,
• the ball neck fixing means being designed such that the form locking elements are adapted to be brought into engagement in a form-locking manner only in the operative position and the rest position.