Closing device with a strong deterrent compression spring

Locking device (1) comprising a handle (17), a closing and opening mechanism (7) which comprises at least one locking bar element (9), the at least one locking bar element (9) being movable by means of a locking bar compression spring (19) from an opening position into a locking position,

• wherein the locking bar compression spring (19) has a first preloaded spring force in the opening position for supporting a closing movement of the at least one locking bar element (9),
• wherein the locking bar compression spring (19), in the opening position, is in one setting free of tension and has the first preloaded spring force in another setting, after rotating the handle (17)
• wherein the handle (17) is connected to the locking bar compression spring (19) via a tensioning lever (27) and the tensioning lever (27) creates the first preloaded spring force of the locking bar compression spring (19) as the handle (17) is turned,
• wherein the tensioning lever (27) can be immobilised as it reaches a position which corresponds to the first preloaded spring force of the locking bar compression spring (19),
• wherein a trigger plate (13) has a second preloaded spring force for triggering the closing movement of the at least one locking bar element (9), said second preloaded spring force being less than the first preloaded spring force of the at least one locking bar element (9),
• wherein during a closing operation the trigger plate (13) moves in the opposite direction to the second preloaded spring force and releases the tensioning lever (27) from its position of immobilisation, such that the at least one locking bar element (9) moves automatically into the locking position.