CLOSURE DEVICE WITH A CLOSURE CYLINDER ACTINGS AT THE SAME TIME AS A PUSH HANDLE FOR ACTUATING LOCK MEMBERS

摘要

A closure device has a closure cylinder that acts at the same time as a push handle for actuating lock members. The closure cylinder is radially subdivided into a circumferential cylinder guide and into a central cylinder core. The cylinder core may be moved by a key between a locked and an unlocked position of rotation, but when the key is removed the cylinder core is secured by holders to the cylinder guide in a fixed manner not only in the axial direction but also in the direction of rotation. An axial spring force that acts on the cylinder guide axially movable in the cylinder housing actuates the closure cylinder as a push handle. In order to create a reliable device that cannot be forced open, the push handle is made up of two axial sections, of which only the outer section is formed by the closure cylinder whose circumferential cylinder guide is mounted so as to rotate in the cylinder housing. The inner section is in turn radially subdivided into two parts and consists on the one hand of an axial central control bolt and on the other hand of a circumferential pressure bushing. The control bolt is secured to the driver against rotation and axial movements and is mounted in the pressure bushing in a rotary but axially fixed manner. In addition, the pressure bushing is guided in the cylinder housing so as to move in the axial direction but not to rotate. An axial coupling is arranged between the control bolt and the cylinder core and the spring-loaded pressure bushing is pressed by an axial lifting profile against the cylinder guide. When the outer section of the push handle is violently turned, the lifting profile makes the inner section of the push handle run freely in an overload state in which the closure cylinder can turn freely but ineffectively.