초록 ▼

The front system has an upper and a lower end piece (5) which are fastened to the upper and lower front corner region (3), respectively, of the printed circuit board assembly (3). An upper and/or a lower lever pull handle (19), which is fitted to the upper and/or lower end piece respectively, is use

The front system has an upper and a lower end piece (5) which are fastened to the upper and lower front corner region (3), respectively, of the printed circuit board assembly (3). An upper and/or a lower lever pull handle (19), which is fitted to the upper and/or lower end piece respectively, is used for levering the printed circuit board assembly into and out of the mounting rack. A latching mechanism (25) is provided to fix the lever pull handle in the appropriate position when the printed circuit board assembly has reached the point where it has been fully inserted into the mounting rack. A push-button element (31) is integrated in the upper and/or lower end piece. When the lever pull handle is in its fixed position, the push-button element may be depressed to thereby act upon the appropriate lever pull handle, thereby actuating an external, electrical switching element. The electrical switching element, in turn, electrically enables and disables the printed circuit board assembly. The invention has the advantage of allowing the push-button element, as a result of its integration in a lower or an upper end piece, to be brought into an exactly definable position, so that even external switching elements with different external designs may be permanently and reliably actuated via the lever pull handle.

대표청구항 ▼

[ What is claimed is:] [1.] Apparatus, comprising:a) an end piece fastened to a front corner region of a printed circuit board assembly, said end piece comprising a first latching element;b) a lever handle pivotable between a latched position and an unlatched position for levering the printed circui

[ What is claimed is:] [1.] Apparatus, comprising:a) an end piece fastened to a front corner region of a printed circuit board assembly, said end piece comprising a first latching element;b) a lever handle pivotable between a latched position and an unlatched position for levering the printed circuit board assembly into and out of a mounting rack, said lever handle comprising a second latching element;c) a mechanical push-button element integrated into said end piece; andd) an electrical switching element mounted externally of said end piece; wherein:said first latching element engages said second latching element in the latched position;said first latching element fails to engage said second latching element in the unlatched position; andsaid mechanical push-button element is disposed between said lever handle and said electrical switching element for switching said electrical switching element from a first switching state to a second switching state when said lever handle pivots from the unlatched position to the latched position.