Holding gear

1. A holding gear for temporarily fixing a plate-shaped object, in particular a tablet computer, comprising a first holder, which has a coupling arrangement for connection to a supporting gear and which has a first receiving section for positively receiving a first narrow side of the plate-shaped object at least in two spatial directions, and comprising a second holder, which has a second receiving section for positively receiving a second narrow side of the plate-shaped object at least in two spatial directions, and which comprises a flexible traction belt which is connected to the first holder and to the second holder and which is designed for a transmission of a traction force between the first holder and the second holder for fixing the plate-shaped object,

wherein the first holder is associated with a winding apparatus having a winding shaft which is rotatably mounted on the first holder and looped around by an end region of the traction belt and which is designed for winding up and unwinding the traction belt, and

wherein the winding shaft is associated with a prestressed spring arrangement supported on the first holder for providing a traction force on the traction belt dependent on a distance of the second holder from the first holder, and/or wherein a winding axis of the winding shaft is aligned parallel to the extension axis of the first receiving section.

2. The holding gear according to claim 1 , wherein the first receiving section and/or the second receiving section has a U-shaped profile with a shorter U-leg and a longer U-leg, and wherein the traction belt is attached to the longer U-leg.

3. The holding gear according to claim 1 , wherein the winding shaft is assigned a blocking mechanism for a rotationally fixed fixing of the winding shaft to the first holder, which blocking mechanism comprises an actuating element which is designed for manual introduction of torque onto the winding shaft.

4. A holding gear for temporarily fixing a plate-shaped object, in particular a tablet computer, comprising a first holder, which has a coupling arrangement for connection to a supporting gear and which has a first receiving section for positively receiving a first narrow side of the plate-shaped object at least in two spatial directions, and comprising a second holder, which has a second receiving section for positively receiving a second narrow side of the plate-shaped object at least in two spatial directions, and which comprises a flexible traction belt which is connected to the first holder and to the second holder and which is designed for a transmission of a traction force between the first holder and the second holder for fixing the plate-shaped object,

wherein the first holder is associated with a winding apparatus having a winding shaft which is rotatably mounted on the first holder and looped around by an end region of the traction belt and which is designed for winding up and unwinding the traction belt, and

wherein the winding shaft is assigned a blocking mechanism for a rotationally fixed fixing of the winding shaft to the first holder, which blocking mechanism comprises an actuating element which is designed for manual introduction of torque onto the winding shaft, and

wherein a coupling spring is provided for force-transmitting coupling of the actuating element to the winding shaft, wherein on the first holder and on the actuating element corresponding supporting surfaces for torque support between actuating element and first holder are formed.

5. A holding gear for temporarily fixing a plate-shaped object, in particular a tablet computer, comprising a first holder, which has a coupling arrangement for connection to a supporting gear and which has a first receiving section for positively receiving a first narrow side of the plate-shaped object at least in two spatial directions, and comprising a second holder, which has a second receiving section for positively receiving a second narrow side of the plate-shaped object at least in two spatial directions, and which comprises a flexible traction belt which is connected to the first holder and to the second holder and which is designed for a transmission of a traction force between the first holder and the second holder for fixing the plate-shaped object,

wherein the first holder is associated with a winding apparatus having a winding shaft which is rotatably mounted on the first holder and looped around by an end region of the traction belt and which is designed for winding up and unwinding the traction belt, and

wherein the winding shaft is assigned a blocking mechanism for a rotationally fixed fixing of the winding shaft to the first holder, which blocking mechanism comprises an actuating element which is designed for manual introduction of torque onto the winding shaft, and

wherein the actuating element is mounted on the winding shaft so as to be linearly movable between a release position and a blocking position, and wherein an axial spring is arranged between the winding shaft and the actuating element for determining the blocking position as the preferred position for the actuating element, the actuating element and the winding shaft having mutually corresponding control surfaces for presetting an angular position between the actuating element and the winding shaft for assuming the blocking position.

6. A holding gear for temporarily fixing a plate-shaped object, in particular a tablet computer, comprising a first holder, which has a coupling arrangement for connection to a supporting gear and which has a first receiving section for positively receiving a first narrow side of the plate-shaped object at least in two spatial directions, and comprising a second holder, which has a second receiving section for positively receiving a second narrow side of the plate-shaped object at least in two spatial directions, and which comprises a flexible traction belt which is connected to the first holder and to the second holder and which is designed for a transmission of a traction force between the first holder and the second holder for fixing the plate-shaped object,

wherein the first holder is associated with a winding apparatus having a winding shaft which is rotatably mounted on the first holder and looped around by an end region of the traction belt and which is designed for winding up and unwinding the traction belt, and

wherein the winding shaft is assigned a blocking mechanism for a rotationally fixed fixing of the winding shaft to the first holder, which blocking mechanism comprises an actuating element which is designed for manual introduction of torque onto the winding shaft, and

wherein the actuating element comprises an actuating part and a coupling part, wherein the coupling part is designed for force transmission from the actuating part to the coupling spring and wherein the actuating part is mounted on the coupling part unidirectionally rotationally movable.

7. The holding gear according to claim 1 , wherein the first holder and/or the second holder are designed as an aluminium extrusion.