Blocking device for switch mechanism
AssigneeSiemens Aktiengesellschaft
InventorsPaul Hennel, Reinhard Schweiger
Life of this patent
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Abstract
A blocking mechanism is used for switching devices. The manual control element of the blocking mechanism can be locked against unauthorized actuation. The blocking mechanism is able to be blocked such that it cannot be detached. Retaining elements can be moved in relation to each other in a guide, and can engage with retaining lugs in recesses of a switching device to be locked. A catch element locks the actuation of the retaining elements in predetermined retaining positions in its engaged position.
Claims22
A blocking mechanism to prevent unauthorized actuation of a manual operating element of a switching device, comprising:
- a first retaining element;
- a catch element attached on the first retaining element in an articulated manner;
- a first and a second resilient retaining lug for engagement in recesses of the switching device, at least one retaining lug being actuable;
- and
- a second separate retaining element, for the actuation of the retaining lug, the two retaining elements being guided in relation to each other, and the two retaining elements being locked in relation to each other by the catch element to prevent actuation in a retaining position.
Dependencies are inferred from the claim text.