Telescopic rail

A telescopic rail (4) comprising

• a first rail element (1),
• a second rail element (2),
• a third rail element (3), and
• a drive device (13),
• wherein the first rail element (1) and the second rail element (2) are mounted together such that the first rail element (1) and the second rail element (2) are linearly displaceable relative to one another in and counter to a pull-out direction (7);
• wherein the third rail element (3) and the second rail element (2) are mounted together such that the third rail element (3) and the second rail element (2) are linearly displaceable relative to one another in and counter to the pull-out direction (7);
• wherein the drive device (13) is mounted on the first rail element (1) or is mountable on a holding element connectable to the first rail element;
• wherein the drive device (13) is configured such that, in an operation of the telescopic rail (4), the drive device (13) causes a linear movement of the second rail element (2) relative to the first rail element (1) in or counter to the pull-out direction (7);
• wherein the telescopic rail (4) comprises a traction element (5);
• wherein the traction element (5) is fixed to the first rail element (1) and to the third rail element (3);
• wherein the traction element (5) is guided on the second rail element (2) in a direction parallel to the pull-out direction (7) such that a displacement movement of the second rail element (2) relative to the first rail element (1) leads to a displacement movement of the third rail element (3) relative to the second rail element (2);
• wherein the second rail element (2) comprises a first guide element (10, 18) has a first deflection surface (21, 22) and a second guide element (9, 17) has a second deflection surface (21, 22),
• wherein the first guide element (10, 18) is configured such that a pulling force in the pull-out direction (7) can be transmitted from the second rail element (2) to the traction element (5) by means of the first guide element (10, 18),
• wherein the second guide element (9, 17) is configured such that a pulling force counter to the pull-out direction (7) can be transmitted from the second rail element (2) to the traction element (5) by means of the second guide element (9, 17);
• wherein the traction element (5) is deflected by the first and second deflection surfaces (21, 22) such that a displacement movement of the second rail element (2) relative to the first rail element (1) causes a transmission of a pulling force from the traction element (5) to the third rail element (3) in or counter to the pull-out direction;
• wherein at least the first or the second deflection surface (21, 22) is configured such that the first or the second deflection surface (21, 22) deflects the traction element by 180°;
• and
• wherein the deflection surface (21, 22) comprises a recess (25, 26), so that the traction element (5) is in frictional engagement with the deflection surface (21, 22) over an angular range of less than 180°.

A pull-out assembly comprising a holding element and a receiving element, which can be moved relative to the holding element, and two telescopic rails (4) which are disposed opposite to one another and with parallel pull-out directions (7), wherein a first rail element (1) of each telescopic rail (4) is connected to the holding element and a third rail element (3) of each telescopic rail (4) is connected to the receiving element, wherein each of the two telescopic rails comprises:

• a first rail element (1),
• a second rail element (2),
• a third rail element (3), and
• a drive device (13),
• wherein the first rail element (1) and the second rail element (2) are mounted together such that the first rail element (1) and the second rail element (2) are linearly displaceable relative to one another in and counter to a pull-out direction (7);
• wherein the third rail element (3) and the second rail element (2) are mounted together such that the third rail element (3) and the second rail element (2) are linearly displaceable relative to one another in and counter to the pull-out direction (7);
• wherein the drive device (13) is mounted on the first rail element (1) or is mountable on a holding element connectable to the first rail element;
• wherein the drive device (13) is configured such that, in an operation of the telescopic rail (4), the drive device (13) causes a linear movement of the second rail element (2) relative to the first rail element (1) in or counter to the pull-out direction (7);
• wherein the telescopic rail (4) comprises a traction element (5);
• wherein the traction element (5) is fixed to the first rail element (1) and to the third rail element (3);
• wherein the traction element (5) is guided on the second rail element (2) in a direction parallel to the pull-out direction (7) such that a displacement movement of the second rail element (2) relative to the first rail element (1) leads to a displacement movement of the third rail element (3) relative to the second rail element (2);
• wherein the second rail element (2) comprises a first guide element (10, 18) which has a first deflection surface (21, 22) and a second guide element (9, 17) has a second deflection surface (21, 22),
• wherein the first guide element (10, 18) is configured such that a pulling force in the pull-out direction (7) can be transmitted from the second rail element (2) to the traction element (5) by means of the first guide element (10, 18),
• wherein the second guide element (9, 17) is configured such that a pulling force counter to the pull-out direction (7) can be transmitted from the second rail element (2) to the traction element (5) by means of the second guide element (9, 17);
• wherein the traction element (5) is deflected by the first and second deflection surfaces (21, 22) such that a displacement movement of the second rail element (2) relative to the first rail element (1) causes a transmission of a pulling force from the traction element (5) to the third rail element (3) in or counter to the pull-out direction (7).

A telescopic rail (4) comprising

• a first rail element (1),
• a second rail element (2),
• a third rail element (3), and
• a drive device (13),
• wherein the first rail element (1) and the second rail element (2) are mounted together such that the first rail element (1) and the second rail element (2) are linearly displaceable relative to one another in and counter to a pull-out direction (7);
• wherein the third rail element (3) and the second rail element (2) are mounted together such that the third rail element (3) and the second rail element (2) are linearly displaceable relative to one another in and counter to the pull-out direction (7);
• wherein the drive device (13) is mounted on the first rail element (1) or is mountable on a holding element connectable to the first rail element;
• wherein the drive device (13) is configured such that, in an operation of the telescopic rail (4), the drive device (13) causes a linear movement of the second rail element (2) relative to the first rail element (1) in or counter to the pull-out direction (7);
• wherein the telescopic rail (4) comprises a traction element (5);
• wherein the traction element (5) is fixed to the first rail element (1) and to the third rail element (3);
• wherein the traction element (5) is guided on the second rail element (2) in a direction parallel to the pull-out direction (7) such that a displacement movement of the second rail element (2) relative to the first rail element (1) leads to a displacement movement of the third rail element (3) relative to the second rail element (2);
• wherein the second rail element (2) comprises a first guide element (10, 18) which has a first deflection surface (21, 22) and a second guide element (9, 17) has a second deflection surface (21, 22),
• wherein the first guide element (10, 18) is configured such that a pulling force in the pull-out direction (7) can be transmitted from the second rail element (2) to the traction element (5) by means of the first guide element (10, 18),
• wherein the second guide element (9, 17) is configured such that a pulling force counter to the pull-out direction (7) can be transmitted from the second rail element (2) to the traction element (5) by means of the second guide element (9, 17);
• wherein the traction element (5) is deflected by the first and second deflection surfaces (21, 22) such that a displacement movement of the second rail element (2) relative to the first rail element (1) causes a transmission of a pulling force from the traction element (5) to the third rail element (3) in or counter to the pull-out direction;
• wherein at least the first guide element (10, 18) or the second guide element (9, 17) comprises a stationary holding portion (29) which is fixed to the second rail element (2) and a deflection portion (30) which is fixed to the holding portion (29) such that it can be moved in the pull-out direction (7),
• wherein the deflection portion (30) comprises the deflection surface (21, 22) of the guide element (9, 17) and
• wherein the deflection portion (30) is resiliently pretensioned relative to the holding portion (29) in or counter to the pull-out direction (7) by means of a spring element (31), such that the traction element (5) is tensioned.