Apparatus for inserting and withdrawing subassemblies

Supports: cabinet structure – With movable components – Pivotal – fixed axis

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Details

312101, 339 17LC, H05K 500

Patent

active

042563569

ABSTRACT:
In equipment in which a number of plug-in subassemblies, such as printed circuit boards, for example, are arranged, the printed circuit boards are usually inserted in resilient strips of plug-in connectors for the purpose of establishing electrical contact for the conduction strips arranged on the printed circuit boards. These resilient strips are fixed to the rear portion of the supporting frame of the equipment. Appreciable force and satisfactory guidance are required for inserting and withdrawing the plug-in subassemblies. For the purpose of inserting or withdrawing the plug-in subassembly a lever is arranged in a rotary bearing on the plug-in subassembly. Toothed wheel segments are provided at the end of the shorter lever arm of this lever and engage in toothed rack sections of a profile strip which is substantially horizontally positioned. When the lever is actuated, the toothed wheel segments roll in the rack sections. For locking the lever, when the plug-in subassembly has assumed its inserted condition, a locking element, which is provided in the lever handle, comes into engagement with a locking projection which is movably mounted in a recess in the front plate of the plug-in subassembly. The locked condition is disengaged by pushing up the actuator 18.

REFERENCES:
patent: T876004 (1970-07-01), Andreini et al.
patent: 2609268 (1952-09-01), NY
patent: 3193342 (1965-07-01), Sauter
patent: 3294463 (1966-12-01), Kafferlin et al.
patent: 3367732 (1968-02-01), Beye
patent: 3767974 (1973-10-01), Donovan
patent: 3798507 (1974-03-01), Damon

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